Articles tagged with Ecology
A study by Osaka Metropolitan University experts found that male medaka can mate up to 19 times a day, releasing more than 50% of their daily sperm output in the first three matings. The fertilization rate decreases significantly after this point, with some cases showing no fertilization.
A new study reveals fossilized chewing lice eggs in mid-Cretaceous amber, associated with enantiornithine feathers. The discovery provides insight into early coevolution between bird hosts and ectoparasites, shedding light on the origins of modern lice.
Physicists at MIT have devised a formula predicting which invasive species will succeed in an ecosystem, based on analysis of soil bacteria. The researchers found that population fluctuations are key to invasion success, and that diversity can either help or hinder the invader.
Researchers at KIT developed a new water treatment method using carbon nanotube membranes in electrochemical membrane reactors. The study found that pre-adsorption of steroid hormones does not limit their degradation, thanks to rapid adsorption and effective mass transfer. This approach has the potential to improve the removal of micro...
Researchers tracked 71 female common noctule bats on their spring migration across central Europe, finding they align journeys with warm nights and incoming storm fronts. The bats' ability to surf wind currents allows them to reduce energy demands, but flexibility in migration timing is also crucial for survival.
A new study finds that fuel aridity is the most significant driver of forest fire burn severity in Canadian forests, particularly over the last two decades. Burn severity has increased significantly, especially in northern Canada, where changing climate and vegetation type play a critical role.
The Ecological Society of America has elected four new Governing Board members and three Certified Senior Ecologists to serve on the Board of Professional Certification. Rese Cloyd will lead efforts to conserve District of Columbia's ecosystems as ESA's president-elect.
A recent UC Riverside study found that raking dead grass can boost California's native wildflower diversity, reducing fire danger and increasing plant community changes. The simple, low-cost method of removing invasive grass layers allows native seeds to germinate and grow.
Scientists at La Brea Tar Pits have identified a mysterious fossil seed, unlocking key findings on past environmental changes and megafaunal extinction. The discovery highlights the vulnerability of junipers to modern climate change and informs conservation efforts.
Researchers observed California ground squirrels hunting, eating and competing over vole prey, revealing a carnivorous summer behavior. This flexible diet suggests they can adapt to changing environments.
A research team led by Hidemasa Bono mapped the genomes of susceptible and resistant bed bug strains, revealing new insights into the development of pyrethroid resistance. The study identified 729 resistance-specific mutations in protein-coding genes related to DNA damage response, cell cycle regulation, and lysosome functions.
A new study reveals that corals must be within 10 meters of each other for fertilization to take place, emphasizing the need for conservation efforts to maintain coral populations. The research found that as distance increases, reproduction success declines significantly.
A new AI image tool, INQUIRE, can aid in analyzing millions of wildlife images uploaded to the internet for insights into climate change impacts on species. Current AI algorithms can identify species but struggle with more complex questions.
A recent study revealed that a 2014-2016 Pacific marine heatwave wiped out over half of Alaska's common murre seabirds, marking the largest documented vertebrate die-off linked to warming oceans. The loss of 4 million birds is attributed to intense climate impacts, with no evidence of population recovery since.
A new study published in Scientific Reports reveals that Aldabra Atoll's shoreline has maintained its net shoreline and total land area over 51 years, with an average change rate of 25 cm per year. The lagoon shoreline underwent more rapid changes than the ocean shoreline, particularly in areas exposed to wind and waves.
A new meta-analysis reveals climate change is reshaping ecosystems and biodiversity globally, altering species distributions and interactions. Under current temperatures, 1 in 20 species will be at risk, with extinction risks escalating sharply beyond this, including 14.9% at 4.3°C
New studies reveal invasive winter annuals are sensitive to changing rainfall patterns, while heat waves impact Colorado potato beetle survival. In salt marshes, mesopredators like mud crabs take over grazing control from top predators, suggesting resilience to their loss.
Coconut palms now cover over half of Pacific atolls' total forested area and 24.1% of their total land area. The widespread conversion to coconut monocrops has been linked to groundwater depletion, declining seabird populations, and adverse impacts on coral reefs.
Bamboo invasion decreases mean and maximum diameter at breast height, maximum height, and total basal area of stands, while increasing stem density. The study reveals a greater allocation of biomass to height growth in bamboo, contributing to its invasive success.
A global analysis of 1.7 million plant community datasets reveals no positive correlation between functional and phylogenetic diversity in most ecosystems. Instead, many plots exhibit a high level of functional diversity with low phylogenetic diversity.
A University of Michigan study found that warmer temperatures decline the immune performance of wild capuchin monkeys, with younger monkeys most vulnerable. The researchers used a 'clean catch' method to collect urine samples from the monkeys, which revealed a significant decline in immune performance during periods of high temperatures.
Researchers have developed a liquid moisture adsorbent that can efficiently harvest water from the air at near ambient temperatures. The technology, which uses random copolymers of polyethylene glycol and polypropylene glycol, has the potential to provide clean drinking water in arid regions and during disasters.
Research found that plants adapted to colder temperatures have a higher rate of photoinhibition repair when exposed to cold conditions. This adaptation allows them to survive in colder regions. The study used Arabidopsis thaliana ecotypes from around the world to demonstrate this phenomenon.
Researchers mapped global ship traffic and whale habitats to identify 92% overlap, pinpointing high-risk areas for collisions that kill whales. Expanding management efforts to 2.6% of the ocean could significantly reduce these fatalities, aiding conservation efforts.
Research highlights knowledge gaps in plastics' effects on climate change, biodiversity loss, and environmental pollution. Scientists found only a few studies addressing impacts on climate change and biodiversity, while the majority focus on environmental pollution.
A University of Michigan study found that glyphosate-resistant morning glory plants are also resistant to chewing insects. The researchers discovered a positive correlation between glyphosate resistance and insect resistance, suggesting that the herbicide disrupts the co-evolution of plants and their insect herbivores.
A new study highlights the pressures human activities place on tropical marine ecosystems, with fishing techniques and tourism posing the greatest threat. The research provides insights into the impact of various activities on different habitats, shedding light on how to ensure sustainable management.
Researchers used stable isotope analyses to determine the nitrogen isotope ratios in the hair of four closely related civet species, revealing that faunivory was much more common than previously thought. The study suggests that varying degrees of consumption of animal sources is the key mechanism of niche partitioning among these species.
A new study by Umea University researchers found that mixed forests with multiple tree species are less prone to damage from fungi, insects, and fires. The results suggest that increasing the number of tree species in production forests could reduce forest damage risk and financial losses.
A sweeping review of global research on shellfish reefs highlights the need for more data on fish species and monitoring methods to support conservation efforts. Shellfish reefs provide critical habitat for diverse fish communities, including economically valuable species.
Piangua populations are experiencing a significant loss of genetic diversity due to intense harvesting, reducing their ability to adapt to environmental challenges. The study reveals subtle genetic variations among local populations, highlighting the need for targeted conservation strategies.
The University of Tennessee will place 5,000 East Tennesseans on the path to good jobs in the green economy over three years. The initiative focuses on underrepresented workers and addresses growing demand for skilled labor.
A long-term study has shown that reintroducing resistant mountain yellow-legged frogs to sites infested with the deadly amphibian chytrid fungus allows for landscape-scale recovery. The frogs have developed resistance to the fungus, enabling them to persist in its presence and thrive in their ecosystems.
The study reveals that the hadal snailfish has unique metabolic adjustments to store energy, optimize energy utilization, and maintain membrane fluidity. The fish increases lipid reserves, elevates CoQ and ATPase levels, and adjusts fatty acid ratios to withstand food scarcity and high pressure.
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.
Record-high temperatures in Svalbard and East Finnmark create conducive conditions for tree growth, exceeding the classic 10°C threshold. The growing season and average temperature criteria were met at multiple weather stations, indicating a suitable climate for forest establishment.
Research articles highlight the limitations of the 'tens rule' in invasion ecology, while also showcasing the growing use of crowdsourced science in environmental reviews. Additionally, a study uses artificial intelligence to identify individual animals with high accuracy, improving conservation strategies.
A new study found that COVID-19 travel restrictions and social measures reduced seasonal influenza cases globally, but allowed certain lineages to persist in tropical regions with fewer restrictions. The spread of influenza is closely tied to social behavior and air travel, which was severely impacted by the pandemic.
The MEMELAND project will analyze sediments and soil in lakes across Europe to reveal how medieval farming shaped today's landscapes and biodiversity. The study aims to protect northern Europe's essential biodiversity by understanding the environmental changes that occurred during this period.
A new international study found that even wind-adapted albatrosses struggle to find food during very stormy weather, highlighting the impact of climate change on these birds.
Researchers found that echolocating bats create detailed mental acoustic maps of their surroundings, allowing them to navigate over several kilometers. The study also showed that bats use both echolocation and vision to improve navigation performance.
Research suggests that Indigenous population expansion and cultural burning practices led to a 50% reduction in shrub cover in southeast Australia, limiting wildfire intensity. Reintroducing these practices could curb future fires.
Scientists used acoustic mapping technique to track vulnerable capelin species and observe massive predation event involving Atlantic cod. The study revealed that as climate change causes Arctic ice sheet to retreat, capelin will be more stressed and vulnerable to natural predation events.
Researchers explored how future changes in the North Water Polynya could impact marine communities. Changes in plankton and fish populations were found to have significant effects on the entire ecosystem. Polar bear numbers are projected to halve due to declining phytoplankton and copepods.
Researchers investigated elevational patterns of seed plant beta diversity and its turnover and nestedness components in the Gyirong Valley. They found a hump-shaped pattern driven by climate variables, with taxonomic and phylogenetic beta diversity being lower than expected. Conservation efforts should prioritize elevations with diffe...
A new Oxford study assesses 152 animal species across various taxonomic groups, finding that more social species live longer, have longer generation times, and longer reproductive windows. Sociality's benefits outweigh its costs, with species displaying increased resilience as a group.
Researchers used 16 years of radar weather data to monitor bird migration patterns from Tasmania to northern Queensland, finding millions of birds migrate each year. The study revealed unique patterns, including variation in migration direction, timing, and intensity compared to Northern Hemisphere birds.
A comprehensive study examining over 16,000 necropsy records from 292 vertebrate species found significant differences in cancer prevalence. Cancer rates increase with body size and cellular mutation rates but decrease with longer gestation periods.
Exposure to widely used agrochemicals at sublethal concentrations disrupts insect behavior, physiology, and long-term ecological harm. This finding highlights the need for comprehensive pesticide assessments beyond lethality.
US wildfires have surged in growth rates over the last 2 decades, with fast fires accounting for 89% of structures damaged or destroyed. These rapid-growing fires present significant challenges to evacuation efforts and firefighting operations, resulting in greater loss of life and infrastructure damage.
Researchers discovered that tire-wear particle leachates induce hepatic oxidative stress, inflammation, and histopathology changes in black-spotted frogs. These disruptions can lead to long-term health issues for affected organisms.
A study by University of Maine researchers found that American lobster populations are relocating to new habitats, while their numbers are dwindling in abundance. The lobsters are now favoring open spaces over rocky shelters, with a significant increase in those living without shelter at all.
Research reveals climate-driven wildfires in extratropical forests are now the leading source of global fire emissions. Extratropical regions have surpassed tropical areas in contributing to fire-related carbon emissions, highlighting the urgent need for addressing emissions and safeguarding forest carbon sinks.
A genetics study suggests that bonobos have three distinct populations, each with unique genetic patterns. The research highlights the need for conservation efforts to protect these groups and ensure the species' survival.
A study published in eLife reveals that larger arthropods like woodlice and beetles play a crucial role in leaf litter decomposition across diverse habitats and seasons. Decomposition rates are influenced by climate, leaf quality, and decomposer abundance, with macrofauna dominating decomposition in hot, dry regions.
Understory plants in European temperate forests have shifted their ranges westward over decades, with a stronger connection to nitrogen deposition than climate change. Westward shifts were more likely than northward ones and colonized areas along the east-west axis were closely related to nitrogen and sulfur deposition rates.
A new synthesis reveals one-third of crucial animal-plant interactions are at high risk, threatening European plant populations. Conservation efforts could target these high-concern disperser relationships to preserve biodiversity.
Dragonfly species with darker wing coloration have evolved to tolerate higher temperatures, possibly a decisive advantage in a warming world. This finding could help predict which species are vulnerable to extinction and preserve biodiversity.
Repeated droughts could cause Galápagos finches to change their song patterns, which might lead to the formation of new species. The study found that males didn't recognize songs from beaks grown under future drought scenarios, suggesting a pathway for ecological speciation.
The world's freshwater lakes are freezing over for shorter periods due to climate change, affecting more than a billion people worldwide. Changes in ice duration have major implications for human safety, water quality, biodiversity, and global nutrient cycles.