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Categories: Ecology: Animals, Environmental: Ecosystems

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Biology: General Biology: Zoology Ecology: Animals
Published

A model for the evolution of intelligence      (via sciencedaily.com)     Original source 

When certain species of wild birds and primates discover new ways of finding food in the wild, it can serve to measure their flexibility and intelligence. In the largest experimental study ever conducted on this topic, researchers have shown that foraging problems requiring overcoming obstacles, such as removing the lid off a container of food, are the only predictors of brain size and innovative behavior in the wild.

Biology: Botany Biology: General Ecology: Invasive Species Ecology: Nature Ecology: Trees Environmental: Ecosystems Geoscience: Severe Weather
Published

In wake of powerful cyclone, remarkable recovery of Pacific island's forests      (via sciencedaily.com)     Original source 

After one of the most intense cyclones in world history tore through the Pacific island of Tanna in Vanuatu, new research showed the resilience of the island's forests.

Biology: General Biology: Marine Ecology: Animals Ecology: Research Ecology: Sea Life Offbeat: General Offbeat: Plants and Animals
Published

Orcas demonstrating they no longer need to hunt in packs to take down the great white shark      (via sciencedaily.com)     Original source 

An orca (killer whale) has been observed, for the first-ever time, individually consuming a great white shark -- and within just two minutes.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather
Published

Researchers use GPS-tracked icebergs in novel study to improve climate models      (via sciencedaily.com)     Original source 

Research unearthed new information to help scientists better understand circulation patterns of ocean water around glaciers. In the summers of 2014 and 2019, a group of pioneers in glacial research attached GPS devices to 13 icebergs and tracked hourly changes in their positions as they passed through Greenland's Ilulissat Icefjord toward the ocean. Study results showed circulation in the primary fjord is greatly affected by freshwater flow from connecting tributary fjords, which is critically important to consider in circulation models.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography
Published

Glacier shrinkage is causing a 'green transition'      (via sciencedaily.com)     Original source 

Glacier-fed streams are undergoing a process of profound change, according to scientists. This conclusion is based on the expeditions to the world's major mountain ranges by members of the Vanishing Glaciers project.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography
Published

Climate change disrupts seasonal flow of rivers      (via sciencedaily.com)     Original source 

Climate change is disrupting the seasonal flow of rivers in the far northern latitudes of America, Russia and Europe and is posing a threat to water security and ecosystems, according to new research.

Biology: Biochemistry Biology: Microbiology Biology: Zoology Ecology: Animals
Published

Scientists discover 18 new species of gut microbes in search for origins of antibiotic resistance      (via sciencedaily.com)     Original source 

Researchers have discovered 18 new species of Enterococcus type bacteria from soil samples collected from all corners of the globe, which may offer new clues to the origins of antibiotic-resistant infections in hospitals.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: General Biology: Microbiology Ecology: General Ecology: Research Environmental: Ecosystems Environmental: General
Published

Measuring electrical conductivity in microorganisms, approaching understanding of microbial ecosystems      (via sciencedaily.com)     Original source 

Researchers have developed an innovative methodology for measuring the electrical conductivity of microbial communities. This methodology holds promise for the development of batteries and electrochemical sensors using microorganisms and may serve as a pivotal tool in elucidating the role of electricity within microbial ecosystems.

Archaeology: General Biology: Marine Biology: Zoology Ecology: Animals Ecology: Sea Life Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

Slimming down a colossal fossil whale      (via sciencedaily.com)     Original source 

A 30 million year-old fossil whale may not be the heaviest animal of all time after all, according to a new analysis by paleontologists. The new analysis puts Perucetus colossus back in the same weight range as modern whales and smaller than the largest blue whales ever recorded.

Biology: Evolutionary Biology: General Biology: Zoology Ecology: Animals Ecology: Nature
Published

The veil varies more than the threat: Predator selection on variability in camouflage and warning signals      (via sciencedaily.com)     Original source 

Researchers leveraged open-access digital collections to validate an age-old hypothesis in evolutionary ecology. The classic hypothesis proposes that predators select for a great variety of camouflage and a limited variety of warning signals, but the idea has never been tested on natural prey.

Biology: Marine Biology: Zoology Ecology: Animals Ecology: Nature Ecology: Sea Life Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

Climate change shrinking fish      (via sciencedaily.com)     Original source 

Fish weight in the western North Pacific Ocean dipped in the 2010s due to warmer water limiting food supplies, according to a new study. Researchers analyzed the individual weight and overall biomass of 13 species of fish. In the 1980s and 2010s, the fish were lighter. They attributed the first period of weight loss to greater numbers of Japanese sardine, which increased competition with other species for food. During the 2010s, while the number of Japanese sardine and chub mackerel moderately increased, the effect of climate change warming the ocean appears to have resulted in more competition for food, as cooler, nutrient-dense water could not easily rise to the surface. These results have implications for fisheries and policymakers trying to manage ocean resources under future climate change scenarios.

Ecology: Animals Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography
Published

Chemistry in the ground affects how many offspring wild animals have      (via sciencedaily.com)     Original source 

Chemistry in the ground affect how many kids wild animals have Areas with more copper and selenium in the ground lead to higher reproductive success in wild musk oxen in Greenland.

Biology: Marine Biology: Zoology Ecology: Animals Ecology: Sea Life Environmental: General Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather
Published

Researchers are first to see at-risk bat flying over open ocean      (via sciencedaily.com)     Original source 

On a research cruise focused on marine mammals and seabirds, scientists earned an unexpected bonus: The first-ever documented sighting of a hoary bat flying over the open ocean.

Biology: Biochemistry Biology: Botany Biology: Marine Biology: Zoology Ecology: Animals Ecology: Sea Life Environmental: Water Geoscience: Environmental Issues
Published

Walleye struggle with changes to timing of spring thaw      (via sciencedaily.com)     Original source 

Walleye are one of the most sought-after species in freshwater sportfishing, a delicacy on Midwestern menus and a critically important part of the culture of many Indigenous communities. They are also struggling to survive in the warming waters of the Midwestern United States and Canada. According to a new study, part of the problem is that walleye are creatures of habit, and the seasons -- especially winter -- are changing so fast that this iconic species of freshwater fish can't keep up.

Biology: Biochemistry Biology: Evolutionary Biology: General Ecology: Animals Environmental: General Geoscience: Environmental Issues
Published

Butterflies mimic each other's flight behavior to avoid predators      (via sciencedaily.com)     Original source 

Researchers have shown that inedible species of butterfly that mimic each others' color patterns have also evolved similar flight behaviors to warn predators and avoid being eaten.