Midwest Otter Recovery

otter_pair_maxwellRiver otters now occupy more than 80 percent of Indiana counties, says Scott Johnson, nongame biologist with the Indiana Department of Natural Resources in a department press release.

That is remarkable, because in 1942 river otters had been extirpated from the state. A restoration program began in 1995, 303 otters were transported from Louisiana and released at 12 sites in northern and southern Indiana.The otters thrived and in 2005 they were removed from the state’s endangered species list.

More recently, otters have moved into central Indiana, finding habitat in an area that was long thought not to be ideal, says Johnson.

In what is perhaps the modern sign of wildlife restoration success, the otters are now considered a nuisance to some Indiana pond owners. The IDNR received 34 river otter complaints last year and issued 10 control permits in 2012.

Read the IDNR press release, here.

In Illinois, river otter restoration may be considered even more successful. Last week, National Public Radio reported that Illinois had reinstated an otter trapping season for the first time in 90 years. The story’s headline says that the state has been overrun by otters.

Read or listen to the NPR story, here.

Photo: River otters, courtesy Indiana Department of Natural Resources

Midwest Otter Recovery

otter_pair_maxwellRiver otters now occupy more than 80 percent of Indiana counties, says Scott Johnson, nongame biologist with the Indiana Department of Natural Resources in a department press release.

That is remarkable, because in 1942 river otters had been extirpated from the state. A restoration program began in 1995, 303 otters were transported from Louisiana and released at 12 sites in northern and southern Indiana.The otters thrived and in 2005 they were removed from the state’s endangered species list.

More recently, otters have moved into central Indiana, finding habitat in an area that was long thought not to be ideal, says Johnson.

In what is perhaps the modern sign of wildlife restoration success, the otters are now considered a nuisance to some Indiana pond owners. The IDNR received 34 river otter complaints last year and issued 10 control permits in 2012.

Read the IDNR press release, here.

In Illinois, river otter restoration may be considered even more successful. Last week, National Public Radio reported that Illinois had reinstated an otter trapping season for the first time in 90 years. The story’s headline says that the state has been overrun by otters.

Read or listen to the NPR story, here.

Photo: River otters, courtesy Indiana Department of Natural Resources

Turtles, Cougars, and Frogs in the Southwest

The current issue of Southwestern Naturalist has several articles that may be of interest to biologists outside of the region.

Yellow mud turtles decline in the Midwest. The largest populations of yellow mud turtles in Iowa, Illinois, and Missouri have experienced severe declines. Withdrawal of water from aquifers is the main cause, but the growth of woody plants also plays a role. Read the article, here. (Requires fee or subscription for full article.)
More info on yellow mud turtles from Texas Parks and Wildlife, here.

Cougar habitat in Texas and northern Mexico. Researchers from Sul Ross State University tested a model of current and potential cougar (Puma concolor) in Texas and northern Mexico and found that it worked. Read the article here. (Same for fees or subscription.)

Fungus strikes desert frogs. Chytrid fungus was found in desert oasis frog populations in Baja California Sur. The oases with higher infection rates also had bullfrogs and non-native crayfish. Read the article here.

Also interesting: Western red bats (Lasiurus blossevillii) and Arizona myotis (Myotis occultus) were found on the lower Arizona River after the area was restored. The Arizona myotis had been extirpated from the area, and the western red bat had not be found there previously. Read the article here.

Dumpster-diving Is Source For Oiled Pelicans

When you think of pelicans losing their feathers’ water repellent qualities because they were soaked in oil and the resulting hypothermia, do you think “oil spill”? Deepwater Horizon?

You can also think “fish waste containers.”

Fish oil seems to be the cause of oil contamination in juvenile brown pelicans in Trinidad, California, according to the Redwood Times (Garberville, Cal.) According to the Redwood Times article, lids were put on the fish waste receptacles last year, when the pelicans were getting inside and getting oiled.

While the lids are still there, people are taking them off to feed the pelicans, the article says. The pelicans also stand in the spray of waste water from the fish-washing station, which contains fish oil.

While worrisome and interesting enough to consider pelicans being oiled in fish waste containers, it is also worth considering for other water birds and other sources of oily waste.

Read all the details in the Redwood Times, here.

Photo: Brown pelican by Lee Karney, courtesy of US Fish and Wildlife Service

Dam Resources

American River Chinook Salmon. CA DFG photo by Matt Elyash

Building fish passages is an arcane art, enlightened on occasion by scientific research. So many fish passages out there just don’t work, wasting time and money, and dooming fish populations.

If you need to direct a fish passage project, make sure you are up on the latest research. Check out the database of fish passage research from the University of Massachusetts at Amherst.

Find the database here.
Read the press release, from the California Department of Fish and Game, here.

NY’s River Otter Project a Success

From 1995 to 2001, New York State relocated river otters to the central and western parts of the state, where the species was believed to be extirpated. The recent retrieval of a car-killed river otter was not entirely bad news for the program. A microchip implanted at the time of release indicated it had been released in 2000, making it 12 years old. That’s four years older than the average wild river otter.

Other reports from the public indicate that the river otter has regained a foothold in these areas of the state thanks to the relocation project.

Read more about the relocation project here. (Scroll down to the middle of the newsletter.)

Photo: River otter release in New York State, courtesy of the NYS Department of Environmental Conservation.

NY’s River Otter Project a Success

From 1995 to 2001, New York State relocated river otters to the central and western parts of the state, where the species was believed to be extirpated. The recent retrieval of a car-killed river otter was not entirely bad news for the program. A microchip implanted at the time of release indicated it had been released in 2000, making it 12 years old. That’s four years older than the average wild river otter.

Other reports from the public indicate that the river otter has regained a foothold in these areas of the state thanks to the relocation project.

Read more about the relocation project here. (Scroll down to the middle of the newsletter.)

Photo: River otter release in New York State, courtesy of the NYS Department of Environmental Conservation.

Clipboard Caused Copter Crash

The 2010  helicopter crash that killed Idaho Department of Fish and Game biologists Larry Barrett and Danielle Schiff, and pilot Perry J. Krinitt was caused when an aluminum clipboard hit the helicopter’s tail rotor, the the National Transportation Safety Board announced in a report released last Thursday.

The biologists were counting salmon redds from the helicopter.

Read the Associated Press story in the Spokane Spokesman-Review.

March Roundup of New Research

Spring is here and a bunch of wildlife surveys are underway around the country.

In Delaware:
-It’s the fifth and final year of the Delaware Breeding Bird Atlas.
-A special effort is being made in 2012 to tally owls as part of the atlas.
Horseshoe crabs are being tallied again, and volunteers are being trained.
-The annual osprey count is offering a volunteer training for the first time since 2007.

Maryland is two years in to four years of surveys for an amphibian and reptile atlas and is looking for volunteers.

In Kansas, they are searching for lesser prairie chicken breeding areas, or leks, from the air with helicopters. Field crews will train on March 29-31 and conduct official survey work across all of western Kansas until the middle of May. The Kansas Department of Wildlife, Parks and Tourism is also asking people to report leks. The survey is part of a five-state effort, and the survey technique will be evaluated.

In North Dakota, the Game and Fish Department has launched a two-year study of white-tailed deer in intensely farmed agricultural areas.

In Maine, biologists at the Department of Inland Fisheries and Wildlife have visited up to 100 dens each winter for 37 years, making the survey in the nation’s oldest radio-collar monitoring program for bears. This year the Maine Sunday Telegram wrote a story about it, with lots of pics. Read it here.

And in Washington, commuters have been reporting wildlife sightings for over a year on the I-90 corridor in anticipation of road improvements. The project’s first annual report was released recently, generating articles in the Everett Herald  and The Seattle Times, and coverage other media.

Photo of I-90 Wildlife Watch billboard by Paula MacKay/Western Transportation Institute, used by permission.

Wetlands Are Not (Re)Created Equal

A study by a Stanford ecologist recently published in PLoS Biology says that restored wetlands are 25 percent less productive than natural wetlands, even 100 years later.

The study is a meta-analysis of 621 natural and restored wetlands from 124 previously published studies. Wetland restoration and the creation of artificial wetlands has been a popular method of mitigating wetland development for decades.

The study found that wetlands with a higher flow of water (think rivers and tidal areas) recovered faster, as did areas with warmer climates. Smaller wetlands recovered more slowly than larger ones. Woe to the prairie pothole on the northern plains and to the New England bog.

Read the open access paper in PLoS Biology, here.
A detailed report in The New York Times Green blog is here.
You can find the press release from Stanford on EurekAlert, here.

Photo: Small wetlands in colder climates with limited water flow, like this Vermont wetland, recover their productivity more slowly. Courtesy Vermont Department of Forests, Parks and Recreation