Population dynamics is a topic in ecology and evolutionary biology that investigates the temporal and spatial variation in population size, structure, and composition, and the processes that drive these changes. It focuses on birth, death, immigration, and emigration rates and their dependence on intrinsic factors (e.g., life-history traits, density dependence, genetic structure) and extrinsic factors (e.g., climate, resources, species interactions). Quantitative population dynamics research employs mathematical and statistical models—such as exponential, logistic, and age-structured models, matrix population models, and stochastic simulations—to analyze stability, persistence, extinction risk, and responses to environmental perturbations or management interventions.
Social animals use a suite of preemptive behaviors in anticipation of conflict, including staying quiet, monitoring their surroundings, conducting raids and bonding through play. In a review published in Trends in Ecology ...
Plants & Animals
Jul 16, 2026
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Unexpectedly low calf numbers within the spinner dolphin population off Hawaiʻi Island were revealed in a study led by scientists with the Marine Mammal Research Program (MMRP) at the University of Hawaiʻi at Mānoa, along ...
Ecology
Jul 7, 2026
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This year's surveys of gray seals in the Wadden Sea and on Helgoland once again show an upward trend. During the 2025–2026 survey year, 3,385 pups and 12,497 gray seals were recorded during the molting period. The results ...
Ecology
Jul 2, 2026
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A team of international scientists and risk assessment experts has developed a foundational blueprint for an innovative population model designed to improve environmental safety testing for agricultural pesticides. The tool, ...
Biotechnology
Jun 30, 2026
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Since the 1970s, the number of insects at Canada's Long Point Bird Observatory has dropped by more than 60%, according to a new study led by the University of Michigan. Because of this, today's birds are smaller and facing ...
Plants & Animals
Jun 22, 2026
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The carrying capacity of the Baltic Sea could withstand a seal population twice its current size, but hunting quotas and Baltic herring mean weight greatly affect the future of the seals. A recent study provides a new estimate ...
Plants & Animals
Jun 20, 2026
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The cause of future food shortages may not be a lack of farmland, but a shortage of agricultural workers. Amid low birth rates and rural decline, a joint international research team from KAIST has developed a new data-driven ...
Agriculture
Jun 18, 2026
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There are encouraging signs for the endangered Maugean skate, with a new monitoring report finding that a new cohort of skates born in Macquarie Harbor has reached adulthood.
Ecology
Jun 10, 2026
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The time-development of species communities cannot be understood solely through ecological interactions or environmental factors, as evolution can also alter community dynamics. This observation helps to understand, among ...
Evolution
Jun 9, 2026
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10
A new study published in the Journal of Raptor Research, titled "Factors Influencing Nestling Sex Ratios of Suburban and Rural Red-Shouldered Hawks, 2004–2016," finds that hawk parents prioritize producing female offspring ...
Plants & Animals
Jun 2, 2026
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