Articles tagged with Population Ecology
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
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Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
European monitoring programs lack sufficient historical data to accurately assess human impact on biodiversity, leading to underestimated consequences for nature conservation. This is due to data gaps from the 18th and 19th centuries, making it difficult to define targets for conservation efforts.
Zoologists at the University of Basel and Lund University found that spiders kill an enormous number of insects worldwide, with estimates ranging from 400-800 million tons per year. This has significant implications for maintaining ecological balance in nature.
A new mathematical model describes ecological invasions as a random walk, categorizing randomness into spatial, demographic, and temporal factors. The model replicates key properties observed in computer simulations, resolving an ongoing argument between ecologists and mathematicians.
A new study by the University of Exeter found that climate change improves breeding chances for migratory geese in the Arctic, but increases the death rate among mothers. This is because warmer conditions require extra energy for laying eggs and make them more vulnerable to predators.
Researchers found eelgrass population stable across Puget Sound basin despite increased human population and shoreline development. Localized declines have been observed at individual beaches, with other shorelines showing healthy eelgrass growth.
Research from University of Michigan found that herbicide-resistant morning glory populations self-fertilize more than susceptible ones. This adaptation helps perpetuate resistance genes and blocks the flow of susceptibility genes from other plants. The study highlights unintended consequences of human activities on wild plant species.
A recent study published in Scientific Reports found that dispersal distances rank biological groups by genetic and community levels, supporting neutral theory predictions for marine biological connectivity. Dispersal limitation maintains species coexistence and promotes regional biodiversity.
A University of Adelaide study found that warmer waters and higher CO2 levels can lead to a twenty-fold increase in the population of a common marine crustacean. Males become larger and more attractive to females, resulting in a massive population explosion.
The BMC Ecology Image Competition 2016 featured a diverse range of images showcasing biodiversity, natural beauty, and biological interactions. Davide Gaglio's silhouette of antelope grazing against the sunrise in the Kalahari Desert won the top prize.
Researchers found that bird species with increasing populations occupy a broader range of climate conditions, while declining species lose their range. This discovery has practical applications for conservation biologists, who can use the new findings to develop more accurate habitat protection strategies.
Researchers developed a mathematical framework to identify key life cycle components driving population growth. This approach can be applied to existing data to provide more robust answers to demographic questions in ecology and evolution.
A UCI study reveals that climate change is altering the growth patterns of male and female Valeriana edulis over elevation in the Colorado Rockies. The shift in sex ratios allows female plants to successfully produce more seeds, while males become more common at higher elevations.
Research reveals that street lights change moth behavior, causing them to shift from vegetation level to lamp-post height, disrupting night-time pollination. Moth populations play a crucial role in plant pollination, and their decline could have significant effects on ecosystems.
A study by researchers from the University of Exeter found that marine turtle trade continues despite conservation efforts, with a shift towards commercial harvesting in certain islands. The study suggests refining conservation interventions and focusing on suppliers and consumers for more robust solutions.
A recent study found that the San Nicolas Island fox population has extremely low genetic variation, making it vulnerable to extinction. Genetic rescue from other island fox subspecies could be necessary to preserve this important ecosystem member.
A recent study found that non-blind individuals carrying a mutant gene are likely to be widely distributed within the population, making eradication of the mutation difficult. The mutant gene also leads to more offspring per year, suggesting its persistence in the future.
A new study reveals that local populations of threatened species may adapt to specific conditions, necessitating different conservation strategies. The research suggests using ecological models to predict suitable areas for each population, improving conservation efforts for the Karner blue butterfly and Siberian primrose.
Research led by UI Scientist Brian Dennis finds honeybees' decline rooted in hive size, which becomes unstable when cooperative functions are degraded. The study proposes regional pesticide management and conservation programs to help honeybees.
Researchers studied tree responses to temperature and dry-season stress in Caribbean lowlands of Costa Rica. The study found significant changes in second-growth tropical forests due to multi-year droughts.
Researchers developed a software framework called plant to investigate how plant species coexist with varying traits. The tool examines physiological rules and functional trade-offs in vegetation structure and diversity.
Researchers developed a new model to estimate male lion mortality, providing insights into human impact on populations. The model can be applied to various species facing local extinction, enabling data-driven conservation strategies.
A new analysis of 26 shrub species in South Africa reveals that climate, fire, and soil factors significantly influence population dynamics. The study's findings provide insights into how these interactions shape the reproductive and survival patterns of plants.
Rising global temperatures may skew gender imbalance among the marine turtle population, according to new research. The sex of marine hatchlings is influenced by incubating temperatures, with warmer temperatures producing a higher number of female hatchlings.
Researchers used COMPADRE database to study 418 plant species, finding half of variation in life history is caused by growth rate and reproductive strategy. The study suggests understanding these patterns can help predict population persistence, extinction, and diversification.
A team of biologists found that current harvest levels for gray wolves in the Northern Rocky Mountains lead to decreased survival and reproduction, smaller packs, and social disruption. The research highlights the need for stronger science-based policies to guide regulated carnivore hunting.
Researchers found that winter temperatures drive synchrony in aphid flight timings, affecting commercial crops like alfalfa and wheat. Climate change influences spatial synchrony in many species, with implications for public health and commercial endeavors.
A new study suggests that strategic directional fencing and/or corridors can be a viable solution for lion conservation by maintaining protected areas and directing lions to suitable habitats. The research highlights the critical role of landscape connectivity in the survival of African lions.
A new study by researchers from Linnaeus University demonstrates that a higher degree of individual variation is beneficial to populations and species. The findings suggest that more variable populations are less vulnerable to environmental changes, show decreased fluctuations in population size, have superior establishment success, la...
Research finds that fishermen in Turks and Caicos Islands are increasing the local prevalence of a disease affecting turtle populations worldwide by selectively harvesting healthy creatures and throwing back infected animals. The study, published in Frontiers in Marine Science, suggests that this practice has the opposite effect of cul...
A new study reveals that humans prey on adult species at rates up to 14 times higher than other predators, leading to widespread extinction and restructuring of food webs. This behavior alters observable traits in prey populations and transforms ecological interactions.
Stan Yavno's research on non-native pumpkinseed sunfish found high levels of morphological plasticity, facilitating their ecological adaptations in new areas. This finding is significant as it suggests that invasive species can outcompete native populations through phenotypic plasticity.
A University of California, Davis study found that the Ising model can explain synchronous events like fruit tree boom and bust years and insect outbreaks. The model applies to understanding population dynamics and has broader implications for extinction and disease.
A study analyzed gaps between biodiversity data and policy reporting needs, identifying essential elements like population abundances and ecosystem structure. The research used the Essential Biodiversity Variables framework to quantify indicators and proxies.
A new study reveals that invasive species like Asian carp use landmarking to find mates by congregating at easily identifiable locations. This strategy allows them to reproduce even when population densities are low, posing a significant threat to conservation efforts.
Chikungunya's Asian tiger mosquito relies on road networks to disperse, posing a challenge for disease control efforts. The study suggests fumigating vehicles at checkpoints could prevent the spread of the vector and reduce its impact on human populations.
A population of giant tortoises has recovered on the Galapagos island of Española, with over 1,000 breeding and restoring some ecological damage. However, more work is needed to fully recover the ecosystem upon which the tortoises and other rare species depend.
The BMC Ecology Image Competition showcases intimate moments of animals and plants, revealing their private lives. The competition captured stunning images of ecological interactions, including a Namaqua Rock Mouse pollinating the Pagoda Lily and an albatross feeding her chick.
A study suggests that certain population densities allow for coexistence between grouse shooting and hen harrier conservation. Grouse managers and conservationists agree on a possible compromise using a model that shows room for 70 pairs of harriers at relatively low cost to grouse shooting. This approach could involve removing excess ...
Caswell's work on matrix population models has had a significant impact on life history theory, conservation biology, climate studies, and the evolution of aging. He was recognized for his lifetime contributions to mathematical demographic analysis.
A study published in Avian Conservation and Ecology reveals that the iconic Blue-footed Booby population has declined by over 50% in less than two decades. The drastic drop is attributed to a lack of sardines in their diet, leading adult birds to elect not to breed, which in turn causes the population to shrink.
A 32-year study in Finnish Lapland found that 90% of moth species are stable or increasing, despite rising temperatures and precipitation. However, warmer temperatures reduced population growth rates, suggesting unknown ecological forces may be masking the negative effects of climate change.
A four-year study in Ireland found that five percent of badgers traveled over 7.5km from their setts, with the longest recorded distance being 22.1km. This information is crucial for designing policies to tackle tuberculosis within cattle populations and understanding how infection is maintained and spread within badger populations.
A genetic and demographic analysis of river herring populations along the U.S. east coast has identified distinct genetic stocks, providing crucial guidance for efforts to manage their declining populations. The most severe declines have occurred in the Southern New England stocks and the Mid-Atlantic stocks, highlighting the need for ...
The study highlights the importance of sustainable land management in reducing deforestation and preserving ecosystems. Agricultural intensification, combined with policies and incentives, can minimize environmental degradation and secure the health of forests and streams in the Amazon and other tropical regions.
A UCI study has found that Southern California sagebrush populations are more adaptable to climate change than those in the north. The researchers transplanted sagebrush from sites along the California coast to a test garden, measuring its responses to altered precipitation and long-term climate data.
Researchers have identified specific parent ants and their children in wild colonies, allowing them to study reproduction trends. The study found that only about 25% of colonies reproduce annually, with most relying on just a few successful queens.
A recent study by the USDA Forest Service's Pacific Southwest Research Station has found that fisher populations in the southern Sierra Nevada are stable. The research, which monitored fisher distribution across a 7,606-square-mile area over eight years, found no increase or decrease in population numbers.
A new study found that UK butterfly populations' sensitivity to extreme drought is affected by habitat type area and degree of fragmentation. Larger, more connected patches of woodland habitat reduced population sensitivity and facilitated faster recovery.
A recent analysis reveals unexpected trends in the growth of a northern muriqui monkey population, including increases in fertility and mortality rates. The study suggests that behavioral changes, such as increased use of the ground for food and mating, may be driving these shifts.
Researchers found that gregarious bat species will continue to decline due to white-nose syndrome, but changes in social behavior may help the little brown bat persist. In contrast, solitary species like the northern long-eared bat are more susceptible to the disease.
A study led by biologists at UCSC found that gregarious bat species are more likely to decline and potentially go extinct due to white-nose syndrome. In contrast, solitary species like the tri-colored bat have stabilized at low levels. The little brown bat's social behavior has changed, but it may persist at smaller populations.
A new ecosystem model reveals how women are being driven out of academia due to institutional barriers, including the lack of part-time work opportunities and biased research metrics. Women who take career breaks or go part-time may struggle to remain competitive with full-time peers.
The Mia J. Tegner Memorial Research Grants support research on the history of ocean ecology, aiming to predict future impacts from human interactions. The 2012 grants were awarded to four researchers studying various marine ecosystems, including Antarctica and the eastern Mediterranean seascape.
A Montana State University study found that population densities around some US national parks rose 2,000-3,100% between 1940 and 2000, while housing densities grew 11-13.6%. The study also identified unique challenges for each of the five land-use category categories, including wildland-protected and urban parks.
Researchers tracked wolf characteristics in Yellowstone National Park from 1998 to 2009, finding that some traits are related to population ecology, while others are genetically determined. The study developed a new model to predict wolf responses to environmental conditions, which suggests that mean environmental changes impact wolf p...
A study of Yellowstone wolves has improved predictions of how these animals will respond to environmental changes. The research used a new model to compare data on wolf characteristics to environmental conditions, revealing that changes in mean environment conditions impact wolf population size more than variability.
A University of Adelaide scientist highlights the potential of freely available software tools to predict the spread of diseases in Australian wildlife and commercial stock. The team used these tools to estimate that up to 100,000 buffalo would need to be culled annually for 15 years to reduce TB prevalence near zero.
A team of ecologists challenges the idea of a universal species-area relationship, finding that geometric constraints and biological effects shape the connection between species richness and plot size. They discovered specific geometric limits that restrict how quickly the number of species can increase with area.
Researchers have discovered a new Ebola-like virus, Lloviu, in bats from northern Spain, which is the first filovirus native to Europe. The study reveals that Lloviu may be a cause for concern as it was detected in deceased bats with signs of an immune response, but not in healthy bats.
The 2011 survey found a significant increase in young-of-year striped bass numbers in Virginia's Chesapeake Bay, with over 27 fish per seine haul recorded. This strong year class is expected to grow into a sustainable population, benefiting both recreational and commercial anglers.