Organismal, population, evolutionary and ecological systems is a research area that investigates biological organization and processes from the level of individual organisms to interacting populations and communities, integrating mechanisms of evolution and ecological dynamics. It encompasses studies of organismal physiology, behavior and life histories; population structure, demography and genetics; evolutionary processes such as selection, drift, gene flow and speciation; and ecological interactions including competition, predation, mutualism and ecosystem functioning. This area emphasizes quantitative, often model-based approaches to understanding how traits, genes, environments and interactions shape biodiversity patterns, adaptive change and the stability and resilience of biological systems across spatial and temporal scales.
Within every muscle of every living species with a backbone, a protein called myosin tugs on a partner protein to generate a muscle contraction. This function, discovered in mammals a century ago, has been presumed by scientists ...
Evolution
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The daily movements of brown howler monkeys (Alouatta guariba) in the forest are determined by an interplay of environmental, behavioral and social factors. This is one of the conclusions of a study conducted in Brazil and ...
Plants & Animals
Jul 8, 2026
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Originally from southeastern Africa, the turquoise killifish (Nothobranchius furzeri) lives in seasonal bodies of water that form during the rainy season and disappear again during the dry season. The fish is highly adapted ...
Plants & Animals
Jul 8, 2026
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Caddisflies are among nature's master underwater builders, capable of spinning sticky silk that they use to form protective cases and webs in freshwater streams. Scientists like the University of Utah's Russell Stewart have ...
Evolution
Jul 8, 2026
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Two new studies examining gray wolves in California paint a complex picture of life on the state's ranching landscapes: Wolves eat cattle more than anything else, and the presence of the predators causes significant stress ...
Plants & Animals
Jul 8, 2026
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Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets. Things mistaken for UFOs.
Astronomy
Jul 7, 2026
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The scenes are biblical. Tens of thousands of rodents scattering across canola fields, behind sheds, into machinery. River fish with bellies full of mice. Carcasses littering the street, the sidewalk, outside your home. In ...
Ecology
Jul 2, 2026
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The next time you post a nature photo online, you might be contributing to a major scientific breakthrough—just as several citizen scientists did when they helped discover the wasp Eupelmus curvator in Japan.
Plants & Animals
Jul 1, 2026
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Salvinia molesta can double its biomass in 36 hours. It spreads across ponds, lakes and slow-moving waterways in a smothering green mat, blocking sunlight, consuming oxygen and collapsing the ecosystems beneath it. Now present ...
Evolution
Jun 30, 2026
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How does a stripy tree snail hide from hungry birds? The Hypselostyla camelopardalis from the Philippines and Reinia variegata from Japan have both evolved a form of dynamic camouflage to survive. Their light-colored patterns ...
Plants & Animals
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