Tag Archives: ecology

Sharks: Bad Creatures or Bad Image?

By Guest PostNovember 8, 2012Media, Naturebret muter, climate change, conservation biology, conservation issue, ecology, extinction, fins, habitat loss, international, key issue, Media, media coverage, media market, meredith gore, michigan, negative effect, negative report, news article, overfishing, overharvesting, pollution, risks, shark attack, shark biology, shark conservation, shark population, sharks, species, state university, survival, threat, threatened species, udall foundation, wildlife

EAST LANSING, Mich. — Historically, the media have been particularly harsh to sharks, and it’s affecting their survival.

The results of a Michigan State University study, appearing in the current issue of the journal Conservation Biology, reviewed worldwide media coverage of sharks – and the majority isn’t good.

Australian and U.S. news articles were more likely to focus on negative reports featuring sharks and shark attacks rather than conservation efforts. Allowing such articles to dominate the overall news coverage diverts attention from key issues, such as shark populations are declining worldwide and many species are facing extinction, said Meredith Gore, MSU assistant professor of fisheries and wildlife and the School of Criminal Justice. (more…)

The Original Twitter? Tiny Electronic Tags Monitor Birds’ Social Networks

By Guest PostSeptember 24, 2012Nature, Sciencearchipelago, bird, brian otis, broadcast, costa rica, crow, drexel university, ecology, encounternet, forest, frequency, galapagos islands, german, internet, islands, john burt, lysanne snijders, Netherlands, new caledonia, radio tracking, radio transmitter, scotland, social behavior, social mobility, social network, South Pacific, st andrews, Technology, university, Washington, wireless sensor, woodland bird

If two birds meet deep in the forest, does anybody hear? Until now, nobody did, unless an intrepid biologist was hiding underneath a bush and watching their behavior, or the birds happened to meet near a research monitoring station. But an electronic tag designed at the University of Washington can for the first time see when birds meet in the wild.

A new study led by a biologist at Scotland’s University of St. Andrews used the UW tags to see whether crows might learn to use tools from one another. The findings, published last week in Current Biology, supported the theory by showing an unexpected amount of social mobility, with the crows often spending time near birds outside their immediate family. (more…)

Researchers Share Surprising Discovery about Coral Reef Ecology

By Guest PostSeptember 4, 2012Environment, Natureacidification, algae, algal symbionts, american samoa, climate change, coastal development, coral reef, coral species, coral tissue, david garrison, DNA, ecology, endosymbionts, environment disturbance, environmental change, environmental stress, french polynesia, functional ecosystem, future, generalists, global stressors, hawaii, himb, hollie putnam, host, manoa, moorea, nsf, ocean acidification, photosynthesis, pollution, prediction, reef corals, ruth gates, skeletal growth, skeletons, soest, stresss, symbiodinium, taiwan, temperatures, theory, threat, tissue sample

Researchers at the UH Manoa School of Ocean and Earth Science and Technology (SOEST) made a discovery that challenges a major theory in the field of coral reef ecology.

The general assumption has been that the more flexible corals are, regarding which species of single-celled algae (Symbiodinium) they host in coral tissues, the greater ability corals will have to survive environmental stress. In their paper published August 29, 2012, however, scientists at the Hawaii Institute of Marine Biology (HIMB) at SOEST and colleagues documented that the more flexible corals are, the more sensitive to environment disturbances they are. (more…)

Not a One-Way Street: Evolution Shapes Environment of Connecticut Lakes

By Guest PostMay 24, 2012Environment, Naturealewife, atlantic coast, bosminia, colonial settlers, colonial times, connecticut, daphnia, david post, ecology, environmental change, evolution, evolutionary change, evolutionary feedback, fish, force, genetic changes, john delong, lake, loop, matthew r walsh, organism, plankton, population growth, predator, prey, torrance hanley, water fleas, yale university, zooplankton

Environmental change is the selective force that preserves adaptive traits in organisms and is a primary driver of evolution. However, it is less well known that evolutionary change in organisms also trigger fundamental changes in the environment.

Yale University researchers found a prime example of this evolutionary feedback loop in a few lakes in Connecticut, where dams built 300 years ago in Colonial times trapped a fish called the alewife.

In a study published May 23 in the journal Proceedings of the Royal Academy B, the Yale team describes how this event fundamentally changed the structure of the alewife and, with it, the water flea that the alewife feeds upon and the food chain that supports them both. (more…)

Science Fair Winner Publishes New Study on Butterfly Foraging Behavior

By Guest PostMay 4, 2012Natureadrian duehl, agricultural fields, alexandra, alexandra sourakov, andrei sourakov, blue morpho, blue morpho butterfly, butterflies, butterfly, butterfly rainforest, clipper butterfly, ecology, electroantennography, evolutionary biology, fermented bananas, foraging behavior, gas chromatography, honey, insects, labial palpi, lepidopterist, mango, mass spectrometry, moths, pollinators, teenage daughter, university of florida

GAINESVILLE, Fla. — University of Florida lepidopterist Andrei Sourakov has spent his life’s work studying moths and butterflies. But it was his teenage daughter, Alexandra, who led research on how color impacts butterflies’ feeding patterns.

The research shows different species exhibit unique foraging behaviors, and the study may be used to build more effective, species-specific synthetic lures for understanding pollinators, insects on which humans depend for sustaining many crops.

In a study appearing online in April in the journal Psyche, researchers used multi-colored landing pads and baits in the Florida Museum of Natural History’s McGuire Center for Lepidoptera and Biodiversity on the UF campus to determine that some butterflies use both sight and smell to locate food, while others rely primarily on smell. (more…)

The Emperor’s New Close-Up

By Guest PostApril 15, 2012Nature, ScienceAntarctic, antarctic ice shelves, behavior of emperor, brent pellinen, british antarctic survey, cape crozier, census, claire porter, climatic, deane morrison, ecology, emperor penguins, Environment, guano, icons, mcmurdo station, michelle larue, pansharpening, penguin poo, peter fretwell, polar geospatial center, satellite image, satellites, university of minnesota

U researchers map emperor penguin colonies by satellite

Emperor penguins may be icons of the Antarctic, but they aren’t immune to disturbances in their environment.

As climatic and other changes unfold, emperors may dwindle in numbers. But how to tell, when researchers can’t access all the emperor colonies dotting the Antarctic ice shelves and count heads every year?

Satellites, that’s how. (more…)

Hiding in Plain Sight, A New Frog Species With A ‘Weird’ Croak is Identified in New York City

By Guest PostMarch 15, 2012Nature, Scienceamphibians, brad shaffer, bronx, cathy newman, cryptic species, dna data, ecology, Environment, evolutionary biology, jeremy feinberg, joanna burger, leopard frog, leslie rissler, long snore, manhattan, marshes, mitochondrial dna, new frog species, new jersey, new york, new york city, odd frogs, ponds, rana, rapid chuckle, Rutgers University, skyscrapers, species, staten island, statue of liberty, uc davis, ucla, university of alabama, unusual frogs, weird rana, wilds, yankee stadium

In the wilds of New York City — or as wild as you can get so close to skyscrapers — scientists have found a new leopard frog species that for years biologists mistook for a more widespread variety of leopard frog.

While biologists regularly discover new species in remote rain forests, finding this one in the ponds and marshes of Staten Island, mainland New York and New Jersey — sometimes within view of the Statue of Liberty — is a big surprise, said the scientists from UCLA, Rutgers University, UC Davis, and The University of Alabama who worked together to make the unexpected discovery. (more…)

New U-M Computer Model Predicts Cholera Outbreaks Up To 11 Months in Advance

By Guest PostJanuary 23, 2012Environment, Scienceaaron king, annual monsoon flooding, attack rates, bacterium, Bangladesh, capital city, cholera cases, cholera outbreaks, climate change, climate factors, climate sensitive urban core, climate variability, computer model, cycles of cholera, dhaka, diarrheal disease, disease transmission, ecology, el niño southern oscillation, enso episode, fecal oral diseases, mercedes pascual, michael emch, mohammad yunus, pathogen, post monsoon, prediction, risk factors, robert reiner, sanitary conditions, space and time, spatial location, university of michigan, urban periphery, vaccination, vibrio cholera, warning system

ANN ARBOR, Mich.— A new University of Michigan computer model of disease transmission in space and time can predict cholera outbreaks in Bangladesh up to 11 months in advance, providing an early warning system that could help public health officials there.

The new forecast model applies specifically to the capital city of Dhaka and incorporates data on both year-to-year climate variability and the spatial location of cholera cases at the district level. This allowed the researchers to study both local variation in disease transmission and response to climate factors within the megacity of 14 million people. (more…)