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Invasion: Little Fire Ants in Hawai’i [video & transcription]

Posted on February 3, 2014 by MISC Leave a Comment

[Transcription] There is a new, invasive, stinging ant now established on the Big Island that threatens the environment, the economy, and the way of life on all the Hawaiian Islands.

How could this be? How could I not know about this? How could this be something that’s going to threaten me so badly and I’ve never heard of it?

When you look in the grand scheme of things, the nastiest of the invasive ants, with the greatest impact on Hawai’i is the little fire ant.

http://www.LFA-Hawaii.org/

A guy came in with his back completely covered with fire ant bites. I would guess two hundred, three hundred bites.

They’d crawl up our legs, they were on our couches, in our beds, in my dresser. Millions of ’em. They were just everywhere.

I’ve been the manager of the Maui Invasive Species Committee for more than a decade. Working with an amazing team of people, staff, partners, working to control and eradicate the most harmful species across Maui Nui. I’ve had the opportunity to work on issues statewide. Traveling to Big Island, Kaua’i, and Tahiti, I’ve seen just how devastating the little fire ant can be and my concern has only grown. I’m now convinced that without an extraordinary effort, the little fire ant will be a catastrophe for Hawai’i.

The little fire ant is native to South America. Moved by human travel and commerce the ants have spread to many islands in the Pacific with devastating impacts. In 1999, little fire ants were discovered in Puna on the Big Island. Now they are widespread in Hāmākua, Hilo, and Puna, from Waipi’o to Kalapana. By 2011 they had spread to Kona and are now established in many sites. In 1999, they were found in Kalihiwai on Kaua’i, and in 2009 a small infestation was confirmed in Waihe’e, Maui.

Dr. Cas Vanderwoude in an expert on the little fire ant who has worked on ants throughout the Pacific. He is now based in Hilo as Hawai’i’s ant specialist.

I was working on a project in New Guinea and the locals there took me to a place that was infested with little fire ants. And the impacts were so extraordinary, the problems that this species caused were so huge, that it was sort of a bit of a turning point for me, I guess, and from that time onward I spent more and more of my time working researching ways to control this species and also looking at the kind of impacts this species has on both people, and on the environment, and on agriculture.

Now with little fire ants, we have colonies with lots and lots of queens. So if one queen dies, it’s not that important because there are other queens that will take her place. And those queens will stay with that parent colony, or walk away a few feet, or a few yards so that they remain connected to the parent colony all the time where really most scientists would consider that network to be a single colony and we would call that a super colony. Super colonies can span many aces, many thousands of acres in some cases where all the workers you would find all work together and cooperate with each other.

The Hawaiian Islands are in the early stages of infestation. Unless we stop their spread, little fire ants will form massive super colonies on each island changing Hawai’i forever.

Most ants like open, sunny, kind of drier places, but little fire ants are much more of a rainforest species. They like it shady, they like it wet, and they like to live in trees, which again, most ants will nest in the ground and then actually forage on trees but these will look for places to set up their nests in the trees themselves. For an arboreal species, for a species that like to live in trees, they’re not actually very good at hanging on. So even a small bump to vegetation will result in a rain of these little ants falling down onto the person or the animal that’s bumped the tree.

We got rained upon by all of these fire ants. We didn’t know what it was, but it was very, very painful it was. Like burning after that, just had to go take a shower and it still was burning after that.

The sting’s actually very small and a lot of people don’t notice that it’s an insect that stung them. What they end up with is, a few minutes after being stung, they end up with a rash.

It was like, what is this rash? Intensely itchy, painful rash. And the itch, if you can not scratch is manageable, manageable if you don’t scratch. But kids scratch and adults scratch. And you know it’s just very hard to not go, I have a fire ant bite right here, it’s very hard for me to not dig at it right now cause it’s itching me.

They were so itchy, they were so, so itchy and I mean even a day or two after I got bit they were still itchy. They hurt for a long time and they leave scars, too cause I would scratch them I guess.

The pattern of fire ant bites is that they disappear for a while and then they come back, they disappear for a while and then they come back. And over three or four days, on day three it can be just as itchy as it was on day one. The next level of concern is infection, that’s when people dig at it. And around here when you have an open sore, you’re going to get infected. You’re gonna get a staphylococcal infection and then chances are really good that it’s gonna be MERSA and so that’s what we are dealing with at the clinic.

Yeah, well I remember the first time Michaela got bit by a fire ant. It bit her on her chest and it swelled and it was red and it was really angry looking and I think she was maybe not even a month old, I think, and I just freaked out.

You know we’d sit and the couch and you’d look on the ground and you’d see ants, you know, right under you. So we couldn’t put her on the ground.

You’d have to dust your feet off before you sat on the couch or got into bed. Shake your towels out, your clothes out. They were just everywhere. It was everywhere.

Now, it’s just really a prevalent problem. They’re everywhere. I think everybody would have a story about an infestation in their homes, in their cars. They’re all over in the schools. Prior to the very recent treatment of this school, they were in my classroom. It’s challenging in an elementary school and an edible garden. I had to let all the parents know, we have this problem. If you kid comes home with a…you know, make sure that none of them have allergies. But everybody at one point or another got a bite or two. The custodians, I mean they a hard time maintaining the campus because all of the foliage around the campus was just loaded.

So, when they did the septic tank they brought in materials and they brought in cinder, so I’m thinking that they probably brought in the ants too. We never had that problem before. And then whatever we move around, the materials, you spread around for the campus, so we probably spread it more.

People are being stung in their homes, at work, and in parks. Public land and wild places may be abandoned to the ants. Hunting, hiking, and even beach trips will not be the same. The ants have already infested parks in the Hilo area.

We notice because it’s around out tower. And then for some of the people that lay out on the grass or sometimes they lay out on the far side, over there and they come telling us they’re getting bit. It falls off the trees, too, sometimes. It falls onto the beach patrons and they come up, something’s burning their neck and…[sigh]. It’s a really bright, bright day you see the little ant cause it’s really small. That thing actually went with us to our homes. That’s the, that’s the bad part. In our cars. They spread and end up in your bed and you get a bite in the night and not a good feeling. Yeah, it’s getting worse, it’s getting worse.

But for people that live a subsistence lifestyle, that live, you know, very firmly connected with the land, that produce most of their own food and the things that they need from their own land. And they have to suffer the crop losses or the economic losses or the production losses and there’s not a lot that they can do about it.

Everywhere, there’s not, not one spot without ants. If he didn’t treat, he’d have no life, no income. So, t he ant has been here for six years and he’s been able to contain it right on his property and trying to find a way to get rid of it.

Some of the people I talk to they feel really trapped because they don’t have the ability either financially or technically to actually deal with these issues, so it just adds an extra burden to their life.

They don’t even want to eat their bananas any more. The pineapple is full of ants. The ants get into the taro. What was it like before the ants came, living here? A lot of food. It was really nice. A lot of food. Paradise. It was paradise, but they don’t give up. How long has the land in this area been a part of her family? Generations. How often do you get stung? Everyday, everyday, everyday. When the wind is really strong, don’t come outside. A lot of people have abandoned their land already. Her cousin abandoned his land, up there they abandoned they’re land. They left. They don’t wasn’t to live here anymore. They gave up.

So Tahiti is the most populated island in French Polynesia. It is also the biggest one with the tallest peaks and mountains, so it has the richest biodiversity in French Polynesia. We’ve got about 850 native plants including 550 endemics. If some colonies are accidentally moved to those higher elevation areas it would be an ecological disaster.

Like Tahiti, Hawai’i is an evolutionary showcase with an exceptionally high number of plants and animals found nowhere else in the world. Little fire ants have the ability to transform and decimate native places and species. Forest birds and ground nesting sea birds are at risk along with sea turtle hatchlings. Even the smallest creatures, bugs, beetles, and spiders are vulnerable. In some infested areas of New Caledonia, little fire ants now dominate, making up more than 90% of insects with impacts cascading throughout entire ecosystems.

Hawai’i’s got quite a remarkable number of seabirds for the area. We have 23 breeding species of seabirds. Probably 20 would be directly threatened by ants in a large way. And all of them have this really long incubation period and long defenseless period. This about a month old chick of a wedgetailed shearwater and you can see it’s pretty helpless. There’s no tail feathers or wing feathers. A big, fat, ball of down. These birds are particularly susceptible to ants during the period of time when the egg is ready to hatch. It makes a hole in the egg shell which allows ants and things to actually enter it and to start directly attacking the chick inside of the egg. If ants were to get into some of the of the low wet forests like I’ve heard that they’ve done in other areas, they may be the thing that would push Newell Shearwaters and low elevation nesting Hawaiian Petrels or other endangered species over the edge.

The effect that it has on pets. The blinding and I’m sure it’s got to be very painful for them to be constantly being bitten or stung.

At start she was loving to go in the bush. Now she stays home. She is blind.

One time we did witness a bite on the eye. He came in right after and just ferociously rubbing his eye. You know, he was in a lot of pain for a while. You could tell. A few hours, sat and just licked and rubbed his eye.

The black one who is affected the most, if I pick him up, it never fails, he’s got fire ants in his fur. I’m bitten every time I pick him up.

Every single animal we have, we have three cats and two dogs and every single one of them has a, have clouded cornea. There’s no question that the fire ants and the clouded cornea come together I don’t know how you prove it.

Being here I know, I know that’s what ‘s doing it. Feeling the stings, I’m sure that it’s the fire ants.

We’re animal lovers, yeah. They’re very much a part of the family.

When I first heard that the little fire ant had arrived on Maui, my heart sank because I knew what a threat it posed and knew what the challenges are associated with trying to control a pest species that is so small, but that can be so powerfully damaging.

When we were making a banana delivery my glasses had dropped to the ground and when I picked them up and put them on I got bit on the eye. And it was so severe. I had to, like, run to the house and put ice on my eye. I had to lay down and the thought came that, I wonder if this is the fire ant. Initially when they came out to do the testing, so they put the peanut butter sticks everywhere, where we felt the ant, we’d experienced the ant. And it came back positive. It was evident that the destruction that the fire ant can bring to an island, which is what’s happening on the Big Island is something we did not want to happen here on Maui. Then whatever contribution we could make to help prevent the fire ant from coming to Maui we were gonna make.

So Maui was a good small scale test case. And Kaua’i presents a good opportunity for a large scale test case on eradication.

Right here we’re on Kalihiwai Beach. It’s a beautiful sandy scape and it abuts this cliff side area. The ant infestation is actually along that cliff line around the corner.

And as I got to the bottom of the cliff where i go holoholo and I could feel some bites all over my shoulders and my back and I was like, ho, what is this? And then I could see some ants was on top of me. When it’s wet, you’re always grabbing trees, grabbing the rope, so I guess that’s what kinda makes ’em all come down too on you. And you’re getting bit going down the trail and it’s like, ahhh. That’s the trail we use all the time and that would be the trail I would take my son down there and having the ants fall on top of him and getting bit up, that’d be a big concern for me. I wouldn’t want that happening.

Well, some landscaper came and you know, landscaped the property down below here and two fire ants were in that particular plant and now we have a colony. It’s really bothered us and so I asked that question. How and why, where did this fire ant come from?

Historically, the little fire ant arrived to Kaua’i in 1999 on a shipment of palms. So the original infestation was only about five acres. It was believed to be eradicated, but what had actually happened was that it was brought to undetectable levels. And unfortunately now it’s about twelve to fifteen acres. Without Department of Ag’s containing it on that edge, it would have spread across that property and on to the next one. It would be devastating to have it infest this area, one of the nicest beaches on Kaua’i.

Farming is woven into Hawai’i’s history and is key to a sustainable future. Healthy are a critical component of farming. The pollination of crops, honey production, and Hawai’i’s Queen Bee industry face a new threat.

The bee industry is important wherever you are. All our hives have succumbed to LFA because LFA is a protein eater and the larval stage of the bees are very susceptible. If you have LFA and they’re close to your hive and they can get up and into that hive, they’ll probably take your hive down. I think it’s much more dangerous than the varroa mite.

Both local and export agriculture and our hopes for food security are at risk because of the little fire ant. In addition to stinging agricultural workers, little fire ants can weaken plants by farming insects like aphids and mealy bugs.

Those insects secrete a sugary substance that the ants use as a source of energy. So the ants have a huge source of energy that allows them expand and grow and farm yet more mealy bugs and scale insects which makes the plant sicker and sicker. That decline in health could result in quite substantial crop losses.

I grow macadamia nuts, coffee. I have lychee, mangosteen, orchids. Just a little bit of everything. A diversified crop farm.

I was going to grow four to eight acres of palms for hearts of palm, a couple acres bamboo nursery. So by the time we discovered them, we had millions and millions and millions. The palms are not harvestable because of the ants. I’m out of business. Totally. Little fire ant.

Now I have fire ants in my lychee crop. You’re in there with the panicles and you’re trying to grab your lychee and cut it and all that. You get them on you. I watched them as they were shaking all these ants off of them. And basically it was raining ants. Raining fire ants on them from the lychee.

The cost of trying to actually control fifteen acres when there are literally, you can ask Cas, but I’m sure hundreds of thousands in one tree. And finding people willing to work in the orchard is extremely difficult. I really think that this is the most devastating invasive that we have.

When I heard about the little fire ant I was really appalled and really scared. We’d be in very big trouble if it came into our coffee lands. We harvest off the tree and these branches are always leaning over us. Harvesting anything from a tree is going to be very, very, very difficult. And it will greatly impact agriculture. I mean, agriculture as we know it will not be here.

Wearing my hat as the chair of the board of agriculture, I see little fire ant as being a very significant threat. We need to address this quickly.

When you look at our mandate, what is it to do? It’s not just to protect agriculture, it’s not just to protect the environment, it is to protect the native biota, it’s to protect the public health. We can’t do it all. And that is very frustrating. It’s hard choices. It’s choosing between snakes or between, do we look at all the fish coming in because they may have pirahnas in them. Or do we look about what we’re not doing now which is the weedy plants. We’re so dependent on food, imported food, that we can’t let our stores or restaurants go empty. So we’re forced to get it out. Whether or not there are pests on them, we’re forced to get them out. We still get a sampling of interceptions. You know things are getting through and now what do we do from here.

So invasive species and the little fire ant in particular are very problematic because they will inhibit, I think, agricultural expansion.

So I think, it is impacting our growers. I think they’re finding that the ant is moving and where they didn’t have a problem a couple years ago, I think everyone is concerned this pest is moving from area to area and how do you deal with it. I think that’s the difficulty with this. It’s the size of the pest. This particular one is so small that you really have to look for it. Because we’re already considered a high risk pathway for the spreading of pests to the continental US, the presence of little fire ant in these nursery shipments or these flower shipments has heightened the concern that it will cause a California embargo.

California’s gotten very, very restrictive in terms of what we can export from Hawaii to their markets. So they’re, you know, they’re really kind of on the verge of closing us down.

If they find out that they cannot export their crop. Or, or sell it, at all. I think they’ll be very concerned. But because most people don’t have it, or haven’t been stung, bitten, they don’t know the effect. they don’t know that this is a very serious insect.

Because our islands are connected, you have to have real, meaningful, ongoing inspection, detection, reporting capabilities, because without that we will get it. It will become established and it will spread in the Pacific.

The ant is essentially gonna be, is here to stay on the Big Island and that’s just the reality and what we’re gonna be doing is mitigating effects, essentially forever. What we need is a good detection network so we can respond quickly and eradicate it before LFA gets a good foothold.

To do that we need more support for our inspectors. We need more inspectors. We need sniffer dogs, dog detectors and handlers. We need to have the industry, the shipping industry to be involved and supportive. We need to stop [the ants] from moving between islands. And that’s why it’s so important for people everywhere to become aware of what it looks like, what it does, how to report it, and to demand the tools and the resources to address it when it does become established. We need support from our legislators, our elected officials, county officials, federal officials, and we need everyone to be involved.

There’s on thing that that little ant really loves, and it’s peanut butter.

So you take a chopstick and thinly coat it with peanut butter on one end and lay it in the areas where you think you might have little fire ant. Be it a potted plant you’re bringing onto your property or a banana tree you’ve already planted or a palm you’ve already planted, they really do like moisture. It’s really not difficult, at all. Within forty five minutes, the sticks will have the little fire ant on them. They’re very small, but you should be able to see them. And of course if you do find them, you want to put that little stick in a plastic bag, freeze it to kill it, and then send it to the Department of Agriculture so that they can make a positive ID because there actually are quite a few stinging ants on the islands and they’re only able to actually positively ID them with a microscope.

We need for people to understand just how serious this problem is and to ask, demand, support action to stop it now while we still have a chance.

http://www.LFA-Hawaii.org/

Filed Under: Invasive Animals

Tiny beetle bores down on Hawaii coffee industry

Posted on November 15, 2013 by MISC Leave a Comment

tiny coffee berry borer beetle is seen here entering the coffee fruit.
The tiny coffee berry borer beetle is seen here entering the coffee fruit. Coffee berry borer eats the coffee bean, reducing yield dramatically. In four months’ time one beetle will produce 40,960,000 beetles. This pest is only known to be on Hawaii Island and coffee farmers throughout the state are on the lookout. Never bring green coffee or plants between islands. Photo by Andrea Kawabata, UH CTAHR.

Hawai‘i is the only state in the United States where coffee is grown commercially, and Hawaiian coffee, often synonymous with Kona, is beloved throughout the world.  Coffee farms have started springing up on Maui in recent years. “There are maybe 20 times more coffee farmers than 10 years ago,” says Sydney Smith, owner of Māliko Estate Coffee and president of the Maui Coffee Association.

But a tiny bark beetle from Africa, Hypothenemus hampei, or coffee berry borer threatens the coffee industry throughout the state. The miniscule pest was first detected in Kona in 2010. It spread like wildfire reaching north Kona, Ka‘ū, Hāwī, and Hilo. The beetle lays eggs inside of coffee berries. Its larvae hatch and begin to feed, hollowing out the bean and leaving little to harvest and roast.

“Once infestation levels exceed 50% of the cherries in the field, the coffee is not worth picking,” says Rob Curtiss, entomologist with the Hawai‘i Department of Agriculture (HDOA).  He explained that there are farms on Hawai‘i Island with 80-90% infestation.  “After [the beetles] are in the coffee [fruit] there is nothing you can do to kill them.”

People are responsible for spreading coffee berry borers, says Curtiss. Moving infested beans and bags moves the insects. A few infested beans in the back of a pickup truck could mean the introduction of the pest to a new farm—where the beetle population then explodes. Each female can lay 120 eggs, of which there are 10 females for every male. When the females mature, they find a new coffee fruit, tunnel inside, and lay eggs immediately. Their life cycle is approximately 27 days, most of which occurs inside the coffee berry. “Every 30 or so days you can multiply the infestation by about 80,” says Curtiss. “In four months’ time one beetle becomes 40,960,000 beetles.”

Coffee farmers in Kona have been working closely with entomologists and researchers at the Hawai‘i Department of Agriculture and the University of Hawai‘i-College of Tropical Agriculture and Human Resources (UH-CTAHR) to find effective ways to manage the infestation.

By combining several methods of control, some farmers on Hawai‘i Island have successfully reduced infestation levels to below 5%. This system of integrated pest management includes protocols for field sanitation, pruning, monitoring, pesticide application, harvest, and shipping. Instructions can be found in an online publication on the UH-CTAHR website titled “Recommendations for Coffee Berry Borer Integrated Pest Management in Hawai‘i 2013”

The long-term solution may lie in the discovery of an effective predator for the beetle.  According to Curtiss, coffee berry borer is an ongoing target for biocontrol research for the Hawai‘i Department of Agriculture. The department’s exploratory entomologist may someday make a promising discovery in Africa, the beetle’s native range.

Currently, an interisland quarantine restricts the movement of coffee plants and unroasted or untreated “green” coffee from Hawai‘i Island to prevent the pest’s spread to other islands.

The coffee industry on Maui and throughout the rest of the state is growing, as this farm in Kaanapalli shows. But coffee berry borer threatens the entire state. Photo by Forest and Kim Starr.
The coffee industry on Maui and throughout the rest of the state is growing, as this farm in Kaanapalli shows. But coffee berry borer threatens the entire state. Photo by Forest and Kim Starr.

Back on Maui, Sydney Smith has changed the way she runs her farm. “I used to give tours to visitors, but I don’t do that anymore…I’ve removed coffee plants from near our vacation rental.” Smith’s actions stem from concerns that a visitor may have toured an infested coffee farm on Hawai‘i Island and unknowingly be transporting a beetle. “They’re little tiny things that can get in shoes and clothes.”

Coffee berry borer has thus far only been detected on Hawai‘i Island, but Maui coffee farmers have been trained on what to look for. “It’s not if—it’s when,” says Smith.

To learn more about coffee berry borer, visit the UH-CTAHR webpage: www.ctahr.hawaii.edu/site/cbb.aspx and the HDOA webpage: hdoa.hawaii.gov/pi/ppc/cbbinfo/

By Lissa Fox Strohecker. Originally published in the Maui News, November 10th, 2013 as part of the Kia‘i Moku Column from the Maui Invasive Species Committee.

Filed Under: Invasive Animals, Kia'i Moku Column Tagged With: 2013, coffee berry borer, coffee pest, maui coffee

Educator Workshop on Maui

Posted on July 11, 2013 by MISC Leave a Comment

Hō‘ike o Haleakalā Curriculum-35 million years of Hawaiian natural history over 3 days

Educator workshop on MauiWorkshop Dates:
-Friday, August 16, 9-4 (Classroom)
-Saturday, August 17, 10-4 (Hike into The Nature Conservancy’s Waikamoi Preserve)
-Saturday, August 24, 9-4pm (Classroom)

Where: Maui Invasive Species Committee (MISC) Office, 820 Pi‘iholo Road, Makawao

COST: $30 workshop cost covers lunch and supplies for classroom use. Check payable to Tri-Isle RC&D, mail to MISC, PO Box 983, Makawao, HI 96768

Earn 3 DOE professional development credits—search for course title on PDE3 site
Portfolio review date: Saturday, November 9, 2013

Learn new ways to teach science using examples from Hawaiian ecosystems. This course will cover the emergence of the Hawaiian Islands, native flora and fauna, and present day invasive species issues. Play with glo-germ, Google Earth, and a fast-paced forest bird card game. Workshop includes two days of hands-on activities and guest scientists with a half day field trip into The Nature Conservancy’s Waikamoi Preserve.

Registration Deadline:  August 1, 2013.  Register via this link: Hō‘ike o Haleakalā Curriculum-35 million years of Hawaiian natural history over 3 days

Filed Under: For Teachers, Get Involved!, Invasive Plants, Solutions Tagged With: invasive species curriculum, teacher workshop

Maui Activities for Invasive Species Awareness Week

Posted on February 28, 2013 by MISC Leave a Comment

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It’s Hawaii Invasive Species Awareness Week and on Maui, we’re focusing on ant awareness (more activities to follow).

What do you know about the little fire ant?  Here’s a change to test your knowledge and win some great prizes. Teachers-here’s an activity for you and your students!

Tune into KPOA 93.5 & KISS 99.9 March 4-8th for the Spot the Ant & Stop the Ant contest  from the Maui Invasive Species Committee and the County of Maui.

Be ready to answer the trivia questions (all information from stoptheant.org) on-air for a chance to win one of these great prizes from our sponsors:antcostumeweb

  • One night at the Ritz-Carlton, Kapalua
  • One night & brunch for 2 at the Kaanapali Beach Hotel
  • A round of golf for 2 at the Makena Beach & Golf Resort
  • All you can eat prime rib & seafood buffet for 2 from the Makena Beach and Golf Resort
  • A sunset dinner cruise for 2 from the Pacific Whale Foundation
  • $100 gift card for tickets from the Maui Arts & Cultural Center
  • 6-line canopy tour for 2 from the Piiholo Ranch Zipline
  • Hana-Haleakala A star tour for 2 from Blue Hawaiian Helicopters
  • $100 gift card for Ruby Tuesdays in Kihei *

*Special thanks to the Hawaii Islands Land Trust

Think you have little fire ants on your property?
On Maui test & send in a sample to Maui Invasive Species Committee, PO Box 983, Makawao, HI 96768

Filed Under: Get Involved!, Invasive Plants, MISC Target Species

Miconia

(Miconia calvescens)

Family: Melastomataceae

Considered very invasive and is on the Hawaii State Noxious Weed List.
The Division of Forestry and Wildlife of the Hawaii Department of Land and Natural Resources has designated this species as one of Hawaii’s Most Invasive Horticultural Plants.

Description:

  • Large tree grows up to 50 feet tall
  • Large oval-shaped leaves, green on top, purple underneath, with three main midribs running from stem to leaf-tip
  • Native to South and Central America, introduced to Hawaii as a garden plant in 1961 and spread around by plant enthusiasts

Harm:

  • Forms thick stands, shades out native plants and completely takes over moist and wet forests
  • Forms an “umbrella” over the watershed, potentially reducing the amount of rainwater that seeps into the watershed.
  • Shallow root systems promote erosion
  • Can grow from seed to mature seeding tree in four years. A mature tree can produce about 3 million seeds several times per year. Seeds can remain viable for 10 or more years before sprouting
  • Sand-grained sized seeds easily spread by birds and other animals when they eat the fruit. Seeds also spread by people when contaminated dirt or mud sticks to shoes, clothing, equipment, or vehicles
  • Introduced to Tahiti in 1937 and has since overwhelmed two-thirds of Tahiti’s forests, and is directly responsible for threatening 25% of their native forest species with extinction

In Hawaii:

  • Kauai – One population known, in the Wailua State Park and Homesteads area. KISC works with partners to survey for and control all known miconia on Kauai. Land owners and tenants can allow KISC to survey their property and eradicate miconia.
  • Oahu – Originally introduced and traded amongst botanical gardens in the early 1960’s, miconia has since spread into several locations in the Koolau range. The potential population boundary extends to 9,500 acres (including areas considered “seed banks”). If left uncontrolled, miconia could infest up to 121,300 acres on Oahu. OISC is working to survey all population boundaries to completely eradicate it from Oahu.
  • Maui – Introduced to Maui in the early 1970s at a private nursery and botanical gardens near Hana. Infestations now occur in the forests near Hana, Nahiku, Keanae and Huelo. Today, approximately 37,000 acres throughout East Maui, could potentially contain miconia. Eradication is unlikely and resource managers hope to keep the species contained until an effective natural enemy can be found. Miconia is not known from West Maui.
  • Molokai – Miconia is not known to be present at this time. Seeds could arrive in soil on hiker’s or hunter’s shoes or gear, or on native tree fern logs imported from the Big Island. MoMISC educates community members to aid in early detection.
  • Lanai – None known.
  • Kahoolawe – None known.

For more information, see:

  • The Big Drip: Possible Water and Soil Impacts of the Miconia Invasion in Hawai‘i from MISC’s Kia’i i nā Moku Newsletter
  • All hands can be part of defense against Miconia invasion from MISC’s Kia’i Moku Column
  • From the Forest to the Faucet, Every Drop Counts from MISC’s Kia’i Moku Column
  • Invasive plants=Less water from MISC’s Kia’i Moku Column
  • Conservation: Helping the Economy and the Environment from MISC’s Kia’i Moku Column
  • Miconia calvescens information from HEAR
  • Miconia calvescens information from PIER
  • Miconia calvescens information from ISSG
  • KISC’s miconia survey and eradication program
  • MISC’s 2009 International Miconia Conference

Filed Under: Pests Tagged With: Miconia, watershed impacts

Coqui Frog

(Eleutherodactylus coqui)

Order: Anura

coqui1

Click on the image to hear the sound of a male Coqui frog

All frogs in the order Anura are Hawaii State Injurious Species. It is prohibited to release Injurious Species into the wild; transport them to islands or locations within the State where they are not already established; or export outside the State.

Description:

  • Small, nocturnal (night-active) frog about the size of a quarter, up to two inches in length
  • Usually brown or gray-brown, may have a lighter stripe down its back
  • Male’s mating call is a two-note, high-pitched “co-qui” (pronounced ko-kee)
  • Native to Puerto Rico, accidentally introduced to Hawaii hidden in plants around or before 1988

Harm:

  • No natural predators to keep populations in check (and no natural competitors), populations have reached 55,000 frogs per hectare in some Hawaii populations (24,000 frogs per hectare in Puerto Rico)
  • Eat huge quantities of insects, removing insects from forest floor to treetops.
  • Loss of insect services such as pollination
  • Disrupt the balance of vulnerable native ecosystems
  • Potential food source for snakes if they were to arrive
  • Loud, incessant and annoying call from dusk until dawn
  • Adverse economic impacts on tourism
  • Decreased export plant sales
  • Disclosure requirement for real estate transactions, has resulted in decreased property values in some locations

In Hawaii:

  • Kauai – A breeding population of coqui covering about 10 acres was discovered in Lawai in 2001. After extensive efforts by KISC and partner agencies to eradicate coqui from Kauai, the island was declared officially coqui-free in June, 2012.
  • Oahu – The only wild land population, located in Wahiawa, had over 100 calling frogs. Due to the efforts of HDOA, OISC, Oahu Army Natural Resources Program and DLNR, this population has been eradicated. Frogs are still found at nurseries and the owners are cooperating with the Oahu Coqui Frog Working Group.
    On Oahu and think you hear coqui?
    Call 643-PEST or click here for more information.
  • Maui – Thirteen populations in/around nurseries and hotels, residential areas and several large natural area populations. MISC has a full-time crew that spends a majority of their time clearing habitat and controlling coqui frogs within Maui’s populations.
    On Maui and think you hear coqui?
  • Molokai – There are currently no populations of coqui on Molokai. MoMISC works to educate community members to aid in early detection, which succeeded in 2002 when a lone calling coqui was reported and subsequently captured by MoMISC.

For more information, see:

  • Certified Coqui-Free Program from MISC
  • Eleutherodactylus coqui information from HEAR
  • Eleutherodactylus coqui information from ISSG

Tips for Maui Residents:

  • Eliminate frog-friendly habitat
  • Catch or spray your own coqui
  • Citric mixing guidelines.  This page has guidelines; be sure to follow all label directions.
  • Build a CoquiBarrier
  • Information on sprayers suitable for homeowner control of coqui frogs: Sprayer Info
  • Report your coqui control efforts using Google Earth

 

Research:

  • Beard and Pitt, 2012. Eleutherodactylus coqui Thomas (Caribbean tree frog). Choi Beard 2012 Biological Invasions
  • Choi and Beard, 2012. Coqui frog invasions change invertebrate communities in Hawaii
  • Beard and Pitt, 2005. Potential consequences of the coqui frog invasion

Filed Under: Pests

Traveling by boat? Swab Those Hulls and Propellers to Stop Invasive Stowaways

Posted on January 18, 2013 by MISC Leave a Comment

Each year over ships make over 1000 trips to Hawai‘i. Container ships and barges, fishing boats, cruise

Organisms colonize an anchor chain. Photo courtesy of Hawaii DLNR-DAR

Organisms colonize an anchor chain. Photo courtesy of Hawaii DLNR-DAR

ships, and sailboats, aircraft carriers and military ships come bearing cargo for Hawai‘i or stop over on their way across the Pacific. Any of these boats could carry tiny stowaways from distant places, and that has resource managers concerned. Even an interisland boating trip could translate into trouble for your local reef.

“The majority of Hawai‘i’s aquatic invasive species came in via ballast water and hull-fouling,” explains Sonia Gorgula, the state coordinator recently hired by the Hawai‘i Department of Land and Natural Resources’ aquatic division to address the problem. Ballast water is taken by ships at sea or in port to maintain stability, and can contain organisms or larvae that may be harmful when released into a new environment, oftentimes thousands of miles from where they originated. Hull-fouling, or bio-fouling refers to the plants and animals that grow on any aquatic vessel, be it ship or yacht, dingy or dock. When these living organisms reach new waters, they can cause problems.

Of the two types of marine contamination, Gorgula says biofouling is the bigger worry in Hawai‘i. One species introduced this way is snowflake coral, a fast-growing soft-coral from the Caribbean. Since arriving in Hawaiian waterways, it has devoured the zooplankton that supports the marine food web and destroyed numerous black coral colonies. Hypnea, the rank invasive algae that washes up on Maui beaches, spread between the Islands attached to the underbelly of a fishing or sailboat.  Hypnea is not only stinky and expensive to deal with on the beach, it outcompetes native limu.

Biofouling happens on any type of vessel, ocean or freshwater, that remains in port or dock long enough for organisms to become attached. “Broadly speaking it’s mussels, algae, barnacles,” says Gorgula. “When you start to see an assemblage become quite dense, you can even find crabs.” Boats function as floating reefs, transporting these aquatic aliens to Hawai‘i, where they may or may not find a home.

“Some species arrive and establish, then fail. Yet many species become invasive here that were not thought to be invasive until they get here,” says Gorgula. “Often there’s not enough information to predict what will become invasive.” One way to approach the situation is to treat all biofouling as harmful and focus on prevention—keeping boats with Hawai‘i on their itinerary free of small stowaways.

Biofouling is a drag, literally. Barnacles colonize the hull of a ship and reduce fuel efficiency as well as pose a risk of becoming invasive. Photo courtesy of Hawaii DLNR-DAR

Biofouling is a drag, literally. Barnacles colonize the hull of a ship and reduce fuel efficiency as well as pose a risk of becoming invasive. Photo courtesy of Hawaii DLNR-DAR

Most commercial ships have incentives to keep hulls relatively free of growth; biofouling creates drag that reduces fuel economy. But other hidden “niche” areas underneath the boat—propellers and intake pipes used to pull in water for cooling the engine and fire-fighting—often house alien species. Cleaning the hull is part of regular boat maintenance; focusing on niche areas will help prevent the spread of hitchhikers. Certain paints are designed specifically to discourage fouling, and hidden spots can be painted as well as hulls, simple steps that feed into regular maintenance.

Policies and regulations for ballast water are well established worldwide, but biofouling has only received attention of recently. One of Gorgula’s tasks is to develop policy to protect Hawai‘i. “The biofouling policy issue is complex,” she says. “Around the world, only California, New Zealand, and Australia have developed policy. Globally, there aren’t many people working on it. We’re forging new territory” In 2007 the state legislature approved rules requiring ships planning to release ballast water to exchange the water first in the open ocean more than 200 nautical miles out to sea, reducing the likelihood ballast water will contain organisms that could find safe haven in Hawai‘i

It may seem trivial n a world of big ships and global transportation, but paying attention to the details can

A diver inspects a propeller for biofouling. Photo courtesy of Hawaii DLNR-DAR

A diver inspects a propeller for biofouling. Photo courtesy of Hawaii DLNR-DAR

make a big impact. Every boat, even those going interisland can help stop the spread of invasive aquatics. “Clean off biofouling in the same port where it accumulated,” says Gorgula. Be sure to clean your hull, anchor, props, bilge compartment, and any associated gear in the same watershed to prevent its spread to other watersheds and islands.

By Lissa Fox Strohecker. Originally published in the Maui News, January 13th, 2013 as part of the Kia‘i Moku Column from the Maui Invasive Species Committee.
You can find all the articles in the Kia‘i Moku series
http://www.hear.org/misc/mauinews/

Filed Under: In the field, Invasive Animals, Invasive Plants, Kia'i Moku Column Tagged With: 2013, aquatic invasive species, ballast water regulations, biofouling, hull-fouling, hypnea, snowflake coral

From Paper Maps To GPS Units, The Evolution of Technology in Conservation

Posted on December 19, 2012 by MISC Leave a Comment

GPS-enabled field computers help pilots and crews record where they've already surveyed and where they need to go.

GPS-enabled field computers help pilots and crews record where they’ve already surveyed and where they need to go.

If smart phones, tablets, and global positioning systems (GPS) are on your wish list, you are not alone. These gadgets are proving essential in the efforts to protect native Hawaiian ecosystems.

Accurate mapping has always been crucial to surveying for and controlling invasive species. Back in the mid 1990s Maui field crews first began finding miconia. Though not very long ago, the technology available then seems pre-historic today. Using altimeters and orienting from known physical landmarks, they would record plant locations by drawing dots on photocopies of topographic maps. These paper maps were filed away for future use. Subsequent visits meant more hand-drawn maps. Sometimes the only way to find a specific locale was to bring along someone who had been there before.

Early attempts to create electronic maps involved scanning topographic maps into a computer and then drawing dots to estimate locations using computer programs intended for design and drafting. There was an electronic record, but it was time consuming to create and not especially accurate.

Then along came the GPS, promising a precise reading of position and time anywhere on earth, in any type of weather, provided the receiver had an unobstructed view of 4 satellites.  Early GPS units were expensive and heavy. Accuracy was, well, not all that accurate.  That unobstructed view of satellites was often hard to come by given terrain and canopy cover—especially in Maui’s dense rain forest, where miconia was spreading. To record a position, field crews carried a pole that they had to piece together and snake up through the overhanging tree limbs. With luck and patience, they could get enough satellites to provide a reading and not lose the antennae in a tangle of branches.

Rather then depending on paper maps and memory, field crews now load maps onto GPS units that allow them to record where they control plants and guide them to where they need to search.

Rather then depending on paper maps and memory, field crews now load maps onto GPS units that allow them to record where they control plants and guide them to where they need to search.

GPS receivers have improved dramatically. Now field crews load maps onto GPS units and follow pre-recorded trails to locate remote populations of invasive plants.  Rather than relying solely on the memory of a few people, crews can be dispatched to remove plants even if no one among them has visited the area before. Hand-drawn maps are a thing of the past, transforming an unwieldy stack of maps into a few digital files, making it possible to track work on hundreds of thousands of miconia plants.

Helicopters survey vast areas for invasive plants while flight lines are recorded on GPS units to ensure thorough coverage. Spotters in the aircraft record precise locations of plants so crews can revisit the locations either on the ground or by air.  Each helicopter has a GPS-enabled field-rugged laptop loaded with maps to help guide the pilots and spotters.

Even flight following has changed dramatically. Pilots and crew used to have to stop what they were doing and radio in every 20 minutes to let managers know they were safe. Often, terrain blocked radio calls and pilots had to spend valuable time flying to an area where they could make contact. Now flight followers back at headquarters can monitor the helicopter’s whereabouts and status using a computer program synchronized with the GPS unit on the aircraft.

Technology has helped to increase efficiency and effectiveness of field crews on Maui and now these tools are in the hands, or pocket, of anyone with a smart phone. While plans are in the pipeline for invasive species reporting apps specific to Hawai‘i, there are many other options for reporting invasive and rare native species. If you are a cell-phone shutterbug you can easily send photos to email addresses-just type in an email where you would normally enter a phone number. You can also report online via the reportapest website at reportapest.org.  So next time you see plant or animal that causes you to raise an eyebrow just snap a photo and send it in and stay posted for future tools to help you learn more about the plants and animals in your backyard.

By Lissa Fox Strohecker. Originally published in the Maui News, December 9th, 2012 as part of the Kia‘i Moku Column from the Maui Invasive Species Committee.
You can find all the articles in the Kia‘i Moku series
http://www.hear.org/misc/mauinews/

Filed Under: In the field, Kia'i Moku Column, MISC Target Species Tagged With: 2012, GPS use conservation, mapping invasive species, Miconia

Check out the MISC Summer 2012 Newsletter: Kia’i i Na Moku o Maui Nui

Posted on May 25, 2012 by MISC

2012-kiai-i-na-moku-o-maui-nuiClick this link for a PDF version of the newsletter: 2012 MISC Newsletter Kia’i i na Moku o Maui Nui
 
 
 

In this issue:

Moeana Besa and her family live in a part of Tahiti plagued by little fire ants. Photo by Masako Cordray

Moeana Besa and her family live in a part of Tahiti plagued by little fire ants. Photo by Masako Cordray

Moeana’s Message―What Tahiti Can Teach us about Little Fire Ants
“This place used to be paradise” said Moeana Besa. Find out what happened.
On Page 1

Fire at the Farm
How Christina Chang helped stop the establishment of the little fire ant on Maui.
On Page 3

On the Job
Where can you find a snake handler, exploratory entomologist, educator, advocate, law enforcer, pesticide applicator examiner, irrigation specialist, and ant wrangler? Try the Hawaii Department of Agriculture.
On Page 5

New Science
Paintball guns,  scuba tanks, and spacklers—the promising new techniques for treating little fire ants.
On Page 6 (check out the video of the spackler in action!)

Tiny Ants, Huge Nuisance
wasmannia_auropunctata_ems2560_img_1897Learn more about the little fire ant and why this wee creature is such a big problem
On Page 6

Education Saves the Day!
How a class visit led to the detection of the little fire ant on Maui.
On Page 9

MISC field crew leader Darrell Aquino is up for any challenge

MISC field crew leader Darrell Aquino is up for any challenge


Dauntless Darrell

The keen eye of Darrell Aquino, pig hunter and dedicated MISC employee.
On Page 10

PLUS:

  • MISCommunication-The Comics of Brooke Mahnken
  • Managers Corner
  • Is that fire ant Little? Tropical? or Red Imported? Dr. MISCellaneous knows the difference!

Filed Under: Get Involved!, In the field, Invasive Animals, Invasive Plants

The Big Drip: Possible Water and Soil Impacts of the Miconia Invasion in Hawai‘i

Posted on May 10, 2012 by MISC 1 Comment

By Thomas Giambelluca

Miconia leaf with water dropletsAnecdotal evidence suggests that, besides impacting biodiversity, the invasive tree Miconia calvescens is causing landslides and other soil erosion problems in Tahiti, where it has displaced native forest. As miconia takes hold in Hawai‘i, local scientists and environmental organizations have voiced concerns about its potential hydrological impacts: increased flooding, diminished groundwater supply, loss of topsoil, and siltation of coral reefs.

Miconia invasions lead to dense, monotypic stands with little or no ground-covering vegetation. Miconia’s large, dark leaves reduce light levels beneath the canopy, thereby inhibiting the germination and growth of other plant species. Large leaves also produce relatively large throughfall drops during and after rain events.

“Throughfall” refers to rainwater that reaches the forest floor. Some throughfall consists of raindrops that fall through the forest canopy without hitting any leaves or branches. The rest comes from drops that splash or drip from wetted vegetation. Water that drips from the leaves of tree canopies can be much larger than raindrops. If falling from a great enough height, these large drops can reach kinetic energy levels that exceed that of natural rainfall in open areas. Because these large drops hit the ground with greater force, they can result in greater impacts to the soil.

The soil surface, exposed due to the lack of ground cover, is vulnerable to higher rates of “detachment,” the breakup of clumps of soil into small particles. Mobilized by large, high-energy throughfall drops, these particles can clog soil pores and reduce rates of infiltration. This leads to overland flow during rainfall events, a process unlikely to occur on undisturbed soils of native forests on Pacific Islands.

In a pilot study funded by the U.S. Fish and Wildlife Service we were able to verify that light levels under miconia stands in Onomea on Hawai‘i Island are very low.* Based on a limited survey, we also observed ground cover to be very sparse under miconia, with very little live vegetation and meager leaf litter. Most studies have shown that runoff and soil erosion become severe as ground cover declines below fifty percent, as was the case for the Onomea miconia stands.

Using laser disdrometers, Japanese researcher Dr. Kazuki Nanko helped us measure the size and velocity of throughfall drops under miconia and other tree canopies at Onomea and nearby field sites. Dr. Nanko found that miconiaproduced throughfall drops up to seven millimeters in diameter, much larger than typical two-millimeter diameter rainfall drops and significantly larger than throughfall drops under native trees.

Large miconia leaves act as umbrellas, shading out sunlight

Large miconia leaves act as umbrellas, shading out sunlight

The next step in this research is to observe runoff and erosion processes at miconia plots and control sites. Due in part to the effectiveness of miconiaeradication efforts in Hawai‘i, we have not been able to find stands large enough and in proximity to appropriate control sites to do the research in Hawai‘i. It is therefore likely that further study of hydrological impacts of miconia will be based in French Polynesia, where the miconia invasion is much more advanced.

Thus far, our studies indicate that in areas invaded by miconia, the effects of sparse ground cover, high-impact throughfall, and overland flow could combine to produce excessively high rates of soil erosion. Accelerated soil erosion removes topsoil, depriving native plants of access to nutrients and water and leading to siltation of streams and the near-shore marine environment.

Thomas Giambelluca is a professor at the University of Hawai‘i at Mānoa, where he has been conducting research on the climate and hydrology of Hawai‘i and other tropical areas for nearly 30 years.

*Dr. Ross Sutherland, professor and chair of the Geography Department at the University of Hawai‘i (UHM); Ryan Mudd, UHM graduate assistant; and Dr. Alan Ziegler, Singapore National University, contributed to this study.

Originally published in the Summer 2010 edition of the Maui Invasive Species Committee’s newsletter Kia‘i i Nā Moku o Maui Nui. The full newsletter is posted at hear.org/misc/newsletter/

Filed Under: Invasive Plants, MISC Target Species Tagged With: hydrology, increased flooding, landslides, Miconia, siltation, soil erosion, Thomas Giambelluca, watershed

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Maui Invasive Species Committee (MISC)
Office: (808) 573-6472
Press and Media Inquiries: (808) 344-2756
Mailing Address:
PO Box 983, Makawao, HI 96768

Manager: Jorge Renteria, PhD
E-mail: :jorgelrb@hawaii.edu

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E-mail: miscpr@hawaii.edu

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E-mail: miscmgr@hawaii.edu

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