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Amphibians in a vise: Climate change robs frogs, salamanders of refuge

By Guest PostJune 1, 2014Environmentamphibians, aquatic species, climate change, dona sarkar, frogs, hackathon event, itast, refuge, salamanders, simon fraser university, tcells, university of washington, warming climate

By hightailing it to nearby ponds and shallow waterways, frogs and salamanders have – until now – had a way to evade exotic trout introduced to the West’s high-mountain lakes for recreational fishing.

A warming climate, however, will dry up some of the places where amphibians and their young have found refuge. Researchers in the May 1 issue of Frontiers in Ecology and the Environment write about this challenge and a novel combination of tools that could help land managers, biologists, fishing enthusiasts and other citizens weigh where amphibians are in the most need of help and guide plans for possible fish removals from selected lakes. (more…)

Salamanders Help Predict Health of Ecosystems on U.S. Golf Courses, MU Researchers Find

By Guest PostMay 1, 2014Natureaaron held, aengste, angstbewaeltigung, appalachian region, bill peterman, black bellied salamander, desmognathus quadramaculatus, dissertationsprojek, ecological impacts, electrophysiology techniques, grant connette, ida gradl, natural habitat, north Carolina, predict, ray semlitsch, rundumpaket, salamanders, studienalltag, university of missouri, US, water samples

Study finds that improved turf management techniques help golf course ecosystems succeed.

COLUMBIA, Mo. – Currently, there are more than 18,300 golf courses in the U.S. covering over 2.7 million acres. The ecological impacts of golf courses are not always straightforward with popular opinion suggesting that environmentally, golf courses have a negative impact on ecosystems. Now, researchers at the University of Missouri have determined that golf courses can offer a viable habitat for stream salamanders, and enhanced management practices may be beneficial to ecosystems within golf courses. (more…)

Biodiversity Protects Against Disease, Scientists Find

By Guest PostFebruary 15, 2013Natureamphibian eating birds, amphibian infections, amphibian species, aquatic parasite cycle, biodiversity, biodiversity matters, bird species, boulder, california tiger salamander, community of frogs, complex ecosystems, dan preston, decrease in disease, deformed frogs, disease transmission, doug levey, egrets, factor, grasslands, herons, humans, humans and wildlife, hypothesis, infection with ribeiroia, jason hoverman, katie richgels, large scale ecosystems, life cycle, lyme disease, malformations, national science foundation, northern leopard frog, organisms, parasite transmission, parasitic infections, pathogen, pieter johnson, pond, pond community, protects against disease, purdue university, replicate, reservoir hosts, ribeiroia ondatrae, salamanders, toads, university of colorado, west nile virus

Discovery resulted from study of amphibians in ponds

The richer the assortment of amphibian species in a pond, the more protection that community of frogs, toads and salamanders has against a parasitic infection that can cause severe deformities, including the growth of extra legs.

The findings, published in a paper in this week’s issue of the journal Nature, support the idea that greater biodiversity in large-scale ecosystems, such as forests or grasslands, may also provide greater protection against diseases, including those that affect humans.

A larger number of mammal species in an area may curb cases of Lyme disease, while a larger number of bird species may slow the spread of West Nile virus. (more…)

In Blown-Down Forests, a Story of Survival

By Guest PostOctober 19, 2012Environment, Naturebiodiversity, black bears, black birch, broken trees, damaged trees, david foster, dead wood, deserts, device, ecological processes, ecosystem, environmental decision, financial, fires, floods, forest, forests blown, grasslands, harvard forest, harvard university, Health, hurricanes, ice storm, intense wind, logging, lter, massachusetts, matt kane, national, native plant, natural events, polar regions, recovery, red maple, salamanders, science foundation, snapped limbs, southbridge, tornadoes, uprooted trunks, wildlife, woodland, woodland landscape

To preserve forest health, the best management decision may be to do nothing

In newscasts after intense wind and ice storms, damaged trees stand out: snapped limbs, uprooted trunks, entire forests blown nearly flat.

In a storm’s wake, landowners, municipalities and state agencies are faced with important financial and environmental decisions.

A study by Harvard University researchers, supported by the National Science Foundation (NSF) and published in the journal Ecology, yields a surprising result: when it comes to the health of forests, native plants and wildlife, the best management decision may be to do nothing. (more…)

Global Bullfrog Trade Spreads Deadly Amphibian Fungus Worldwide

By Guest PostAugust 14, 2012Natureamphibian fungus, anna peterson, asian food shop, atlantic forest, batrachochytrium dendrobatidis, bd, bd brazil, bd gpl, brazil, brazilian bullfrog, brazilian strain, bullfrog trade, chytrid fungus, dna sequencing, frog farm, frogs, global panzootic lineage, global trade, Japan, lisa schloegel, luis felipe toledo, marcio hipolito, maria lee, michigan bullfrog, north american bullfrog, peter daszak, salamanders, skin, south america, taiwan, timothy james, toads, united states, university of michigan, valerie mckenzie

ANN ARBOR, Mich.— The global trade in bullfrogs, which are farmed as a food source in South America and elsewhere, is spreading a deadly fungus that is contributing to the decline of amphibians worldwide, according to a University of Michigan biologist and his colleagues.

Amphibian populations are declining worldwide at an alarming rate, and the spread of the deadly chytrid fungus is believed to be a contributing factor. The fungus infects the skin of frogs, toads and salamanders.

In a study to be published in an upcoming edition of the journal Molecular Ecology, University of Michigan evolutionary biologist Timothy James and his colleagues examine the role of bullfrog farming in spreading the chytrid fungus between the forests and frog farms of Brazil and then to the United States and Japan. (more…)

Predators Drive the Evolution of Poison Dart Frogs’ Skin Patterns

By Guest PostNovember 25, 2011Natureamazon forest, athieu chouteau, biologist, butterfly, evolutionary process, exotic defensive signal, forest, heliconius genus, mathieu robert sauve, museum national d histoire naturelle, natural selection, Paris, peruvian, plasticine models, poison dart frog, poisonous frog, predators, ranitomeya, salamanders, skins patterns, snakes, tarapoto, university of montreal

Natural selection has played a role in the development of the many skins patterns of the tiny Ranitomeya imitator poison dart frog, according to a study that will be published in an upcoming edition of American Naturalist by University of Montreal biologist Mathieu Chouteau. The researcher’s methodology was rather unusual: on three occasions over three days, at two different sites, Chouteau investigated the number of attacks that had been made on fake frogs, by counting how many times that had been pecked. Those that were attacked the least looked like local frogs, while those that came from another area had obviously been targeted. (more…)

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