Articles tagged with Ecological Dynamics
A study by scientists at the Smithsonian Tropical Research Institute found that juvenile fringe-lipped bats do not initially differentiate between palatable and unpalatable frogs and toads, but learn to identify toxic species through experience. As they mature, adult bats respond more strongly to palatable prey.
A new paper reveals that information exchange between species influences behavior, interactions, and ecosystem dynamics. The authors identify three types of information links within ecosystems: trophic, pure, and environmental information links.
Research reveals thousands of chemical compounds derived from coral reefs and seaweeds are available for microbial decomposition and utilization. Microbes can break down previously thought-to-be-harder-to-degrade chemicals, such as benzene rings and steroids.
Research by the Max Planck Institute reveals how nematodes can shift to 100% predatory behaviour over 101 generations in response to dietary changes. The study highlights the role of multi-generational genetic memory and microRNA involvement in shaping evolutionary adaptations.
University of Michigan researchers developed a statistical method to give a more complete sense of human ancestry. The Gaia algorithm estimates an individual's genetic ancestors, identifies their average location based on movement assumptions, and tracks it back over centuries.
The new Individual-based Ecology journal publishes its first articles, offering a fresh perspective on how individual organisms and ecological systems dynamics are linked. The journal focuses on individual-based perspectives in ecology, complementing other ecological disciplines.
Researchers discovered a novel spatial mechanism underlying the coexistence of tree species in forests, with mechanisms such as seed dispersal driving patterns in tropical forests and mycorrhizal fungi shaping patterns in temperate forests. This finding has implications for understanding biodiversity stability and species coexistence.
Researchers at University of Hawaii at Manoa have discovered 10 new marine sponge species in Kāneʻohe Bay, expanding our understanding of sponge biodiversity in the Hawaiian archipelago. The discovery sheds light on the crucial role sponges play in regulating and sustaining coral reef ecosystems.
The Royal Netherlands Institute for Sea Research (NIOZ) has made a comprehensive dataset on the tidal flats of the Dutch Wadden Sea available, providing valuable insights into biodiversity and ecosystem changes. The SIBES project has collected data since 2008, revealing shifts in benthic animal species due to climate change.
A study in San Francisco found that coyotes' diets are heavily influenced by the presence of restaurants and impervious surfaces, with consumption of rats highest near restaurants and human-sourced food prevalent in paved areas. This research highlights the adaptability of coyotes to urban environments.
A recent study found that extreme climate events in fall 2022 pushed thousands of lakes in West Greenland across a tipping point, leading to changes in water quality, chemical properties, and biodiversity. The lakes, which previously provided drinking water and sequestered carbon, now emit more carbon dioxide.
The review highlights seven zoonotic infections in people, including those transmitted through traditional diets and hunting practices. Climate change is affecting the local ecosystem, altering animal behavior and parasite life cycles, posing a risk to vulnerable populations.
The researchers developed a novel camera-based system that adapts to traffic flow in real-time, ensuring efficient monitoring and resource use. The system's two approaches, the Random-Value-Camera-Level Algorithm and the ALL-Random-With-Weight Algorithm, optimize camera usage and save energy while maintaining reliable surveillance.
A new study explores how city life is influencing the evolution of urban coyotes, revealing genetic changes related to diet, health, thermoregulation, behavior, cognition, and reproduction. The research also highlights the challenges of studying urban coyotes, which are increasingly common in urban areas throughout the US.
A study investigated gene-chemical interactions on bacterial growth, revealing varying impacts of chemicals depending on sugar presence. Machine learning analysis found a countervailing effect between genetic and environmental changes, suggesting a strategy for bacterial survival in nature.
Researchers at Tokyo Metropolitan University discovered that durian plants bloom approximately 50 days after a 15-day dry spell, affecting both grafted and seed-grown varieties. This study sheds light on the tropical ecosystems and can inform effective agricultural practices to predict flowering and manage harvests.
A recent study utilizing plant DNA metabarcoding identifies 186 terrestrial plant taxa on the Tibetan Plateau, surpassing traditional pollen analysis by 25%. The method provides a more detailed and localized perspective on vegetation monitoring and reconstruction.
Researchers are assessing the impact of spongy moth defoliation on blacklegged tick survival and the spread of Lyme disease. The team set up 144 mesh enclosures to study ticks in different conditions, including heavily defoliated areas and those with lower defoliation.
The winners of the Applied Microbiology International Horizon Awards 2024 have been named, including the One Health Microbiome Center at Penn State and researchers Dr. François Thomas and Dr. Helen Onyeaka.
Researchers developed an innovative automated wildlife camera network to monitor species in a Dutch coastal dunes nature reserve. The system, which combines autonomous cameras, wireless data transmission and AI-driven species identification, has been shown to be cost-efficient and efficient, providing new insights into the habitat use ...
Researchers at ETH Zurich have discovered a new predatory bacterium, Aureispira, that uses grappling hooks and cannons to capture prey. The bacterium's molecular structures resemble those of pirate tools, allowing it to entangle and kill its victims quickly.
Researchers found that good nutrition enhances honey bee resilience against pesticide exposure and viral infections. Bees exposed to viruses experienced higher mortality on artificial pollen diets but fewer deaths when fed natural pollen and exposed to pesticides.
Pioneer plants facilitate other plant species through resource sharing, while also benefiting from the interaction. Over time, as more species grow, competition increases, and pioneers become disadvantaged.
A new study led by Dartmouth researchers questions the rapid polar ice collapse model used in the IPCC's sixth assessment report. The team found that the expected rate of retreat is significantly lower than predicted, making the worst-case scenario less likely, but still dire due to ongoing ice loss from Greenland and Antarctica.
A new perspective paper highlights the importance of understanding migration dynamics in rural areas, which are often driven by slow changes related to climate and environment. The researchers propose integrating land system science into migration studies to develop effective sustainability policies.
Long-term coral reef monitoring is essential for tracking changes in reef health, composition, and resilience. Ongoing monitoring provides valuable insights into the impact of acute versus chronic disturbances on reefs.
A recent study predicts that lakes worldwide will experience unprecedented surface and subsurface warming, leading to severe disruptions in ecosystems. Tropical lakes are expected to be the first to emerge from natural temperature bounds, while high-latitude lakes may shield their subsurface layers from surface warming.
Researchers have found that climate change is driving tree species towards colder and wetter regions across Europe and North America. The study analyzed data from over two million trees and found that no single trait of the tree species could explain these changes.
A recent study reveals that nearly 60% of ecological studies in national parks where gray wolves were extirpated overlooked the historical presence of these apex predators. This exclusion can lead to inaccurate assessments of ecosystem changes, which can have serious implications for conservation and wildlife management.
A new method developed by researchers at Florida Atlantic University and the Smithsonian Environmental Research Center improves the accuracy of acoustic tracking in marine animals. The method uses a movement model to reconstruct animal tracks, even in regions with uneven receiver coverage.
Researchers have discovered a new species of snake, Rhynchocalamus hejazicus, in the Hejaz region of Saudi Arabia. The species is widespread and has a distinctive black collar and reddish coloration, filling a previously existing distribution gap.
A recent study by Oregon State University reveals that a surge in purple sea urchins is devastating kelp forests, reducing zooplankton populations and impacting the primary prey of gray whales. This cascading effect affects the top predator, causing them to spend less time foraging in the affected area.
A recent study by an international group found that forests with higher trait diversity adapt better to climate change and thrive. Higher productivity levels were maintained in diverse trees compared to monoculture forests.
Researchers observed a rare instance of lemur predation by a fosa in the Betampona Strict Nature Reserve. The impact of this predation, combined with low reproductive rates and genetic isolation, poses significant threats to the survival of critically endangered lemurs.
The study revealed three genetically distinct populations of rusty-patched bumblebees, highlighting the need for tailored conservation efforts. The analysis showed low colony abundance and high rates of inbreeding, threatening the long-term viability of the species.
Scientists developed a reliable proxy to reconstruct ancient marine oxygen levels, revealing a significant rise during the Late Paleozoic era. This finding suggests early animals evolved in oxygen-poor oceans, providing critical context for studying exoplanet atmospheres.
A study by Hokkaido University and Aarhus University reveals a 'nocturnal' surge in vocalization activity among little auks in Arctic summer, contrary to expectations. The findings provide valuable insights into avian behavior under continuous daylight environments.
Biologist Elizabeth Carlen's investigation into iNaturalist data revealed biased species distribution in St. Louis, with northern parts of the city underrepresented. The framework developed by Carlen and her co-authors identifies four filters contributing to this bias: participation, detectability, sampling, and preference.
Researchers in New Hampshire are investigating the decline of the state's fisher population with a new $1.2 million grant, tracking populations and analyzing tissue samples for toxins and diseases.
Researchers at Hokkaido University developed new computer-based models of masting to understand its effects on ecosystems and food webs. The models predict that masting can affect tree mortality, population dynamics, and animal-forest interactions, with implications for mitigating negative impacts of climate change.
Research reveals humpback whales shift their daily singing patterns away from shore, returning to nearshore in the evening to minimize interference. This dynamic behavior may help increase the efficiency of their acoustic display.
Researchers at Oregon State University discovered that marine heat waves trigger earlier reproduction and high mortality in early life stages of Pacific cod. The study found these changes persisted in subsequent years, potentially impacting the future of Gulf of Alaska's Pacific cod population.
The hip-assist robot EX1 improves walking ability, dynamic balance, and one-leg standing endurance in older adults. The four-week exercise program using EX1 significantly reduces the risk of falls and enhances overall health.
A team of scientists from the Leibniz Institute for Zoo and Wildlife Research found that grey wolves' habitat selection changes during recolonization in Germany, moving from early-stage 'cherry-picking' to late-stage less-selective choices. This shift affects predictions of wolf distribution and expansion in the country.
The five-year grant will utilize ecological and evolutionary principles to study non-small cell lung cancer growth and treatment resistance. Researchers aim to uncover novel therapeutic strategies that can suppress the evolution of resistance in this common type of lung cancer.
Biodiversity researchers can now incorporate nanopublications into their manuscripts to future-proof their assertions on biological taxa and organisms. The newly released nanopublication workflow enables authors to create machine-actionable, FAIR data that can be easily traced back to its origin.
A group of researchers propose that social influence plays a key role in breaking conservation rules, leading to harm for species and ecosystems. They argue that understanding how people are influenced by their environment and social dynamics can help improve conservation efforts.
A new modeling tool called REBURN can simulate large forest landscapes and wildfire dynamics under different management strategies. The tool shows that setting prescribed burns and allowing smaller wildfires to burn can yield more varied and resilient forests over time.
The recovery of gray wolf populations in the United States has been broadly successful over the past 30 years, with many regions now sporting robust populations. However, these growing populations face significant threats, including fragmented habitats, barriers to dispersal, and increased encounters with humans, pets, and livestock.
A University of Maryland study found that tree species diversity increases spider populations, providing a natural pest regulation service. Spider populations in diverse plots increased by 23-50% compared to single-species plots during late summer months.
A recent study found that warming in Northern ecosystems leads to a massive loss of carbon in the soil, with up to 40% released into the atmosphere within years after warming. The research team also discovered that plant productivity becomes nitrogen limited under warming conditions, reducing the ecosystem's ability to store carbon.
Researchers clarify how microorganisms spread globally through atmospheric dispersal, highlighting mechanisms and key areas of concern. The study emphasizes the importance of addressing this phenomenon to minimize disease spread and preserve ecosystem health.
The Pacific Northwest and Cascadia Bioregion are home to diverse ecosystems, including temperate rainforests and marine environments. Research presented at the ESA Annual Meeting explores topics such as restoration efforts, plant community recovery, and climate change impacts on salmon populations.
A large-scale camera-trap survey reveals that tropical mammals living inside protected areas are not spared the effects of human activity, with specialist species thriving near low-density habitats and generalist species benefiting from diverse environments. The study informs biodiversity policy and highlights the importance of conside...
A study found that every member of a hyena clan, except the highest-ranking queen, suffers downward mobility across their lifetime due to demographic processes. Hyenas can move up and down in the hierarchy over time, but they slide down more often than jumping up.
A new biodiversity study shows that even seemingly healthy ecosystems with increasing species numbers may already be on the path to decline and loss of species. The study's findings suggest that species richness is not a reliable metric for monitoring ecosystems, as it can mask negative trends in species extinction.
Coral cells use a molecule called LePin to mark friendly algae for ingestion, a mutually beneficial relationship that helps corals survive. This discovery could inform strategies to prevent coral bleaching and promote coral resilience.
A new study reveals faster growth rates of SAR11 bacteria than previously believed, with some groups dividing up to ten times faster. The research also shows that the timing of bacterial proliferation can influence their abundance and survival, challenging previous assumptions about marine microbial life.
Current measures to protect grasslands in the Qinghai-Tibetan Plateau are damaging the ecosystem and should be stopped. Small burrowing mammals, like the plateau pika and zokor, play crucial ecological roles in maintaining ecosystem health and biodiversity.
A study in Washington state found that when wolves and cougars moved into an area, coyotes and bobcats shifted their movements into regions with higher levels of human activity. However, it was humans who finished off the smaller predators, with over half of the coyotes killed by people during the study period.