Articles tagged with Ecosystems
A new study reveals how beluga whales in Alaska's Bristol Bay survive through a surprising strategy: they mate with multiple partners over several years. This polygynandrous system helps maintain genetic diversity despite the population's small size and isolation.
A study led by Lund University reveals how a dominant wall lizard species has wiped out several color variants within its population. The researchers analyzed data from over 10,000 individuals and found that the aggressive 'Hulk' lizards have shifted the balance of colors, leaving only white throat colors remaining.
This study reveals that 29.2% of global drylands have significantly greened from 2001-2024, while only 4.9% experienced significant browning. Human activities, including cropland expansion and irrigation, have a more significant impact on greening than climate or CO₂ fertilization alone.
A new study found that US forests have stored more carbon in the past two decades than at any time in the last century. Natural forces such as temperature, precipitation, and carbon fertilization are among the largest contributors to carbon gains, while human drivers like tree-planting and forest management also play a role.
A study led by Dr. Frédérik Saltré suggests that sterilizing 22% of adult females annually could stabilize the population at an estimated cost of $34 million over 25 years. This approach prioritizes both animal welfare and ecosystem health, offering a humane solution to the unsustainable koala numbers.
A comprehensive study from Umeå University reveals that humid lowland forest ecosystems receive disproportionate attention, while colder and drier regions are severely underrepresented. This imbalance can lead to policy decisions based on incomplete or misleading science, affecting climate-vulnerable ecosystems.
Researchers found that adding nitrogen fertilizer to the soil increases plant protein and reduces carb content, making them unpalatable to locusts. The study showed a doubled crop yield in treated plots with fewer locusts and less damage to crops.
A six-year acoustic tracking study reveals a predictable seasonal convergence of mature male and female tiger sharks off Olowalu, Maui, coinciding with the humpback whale calving season. The findings suggest an annual mating aggregation site for tiger sharks, contrary to their conventional understanding as solitary wanderers.
A six-year study found dwarf birch trees in blanket bogs survived with higher rates of growth and survival at lower deer densities. The study suggests that lowering deer densities can help restore lost mountain woodlands in the Scottish Highlands.
A new study reveals that resilient nematodes can persist in the Atacama Desert's hostile soil, with population diversity correlating to water profile and temperature fluctuations. The findings suggest that biodiversity in arid regions may be higher than previously assumed, but also warn of ecosystem damage.
Researchers build a robot to demonstrate how tropical bats spot insects perched on leaves using echolocation, revealing a plausible mechanism for the acoustic mirroring effect. The study suggests that bats can efficiently determine leaf occupancy by scanning sounds from an angle and listening for echoes.
The US has more than 4 million miles of rivers, but existing regulations only account for less than 20% of total river length. Freshwater conservation strategies have historically focused on land use and development, leaving gaps in protection measures for lakes, rivers, and wetlands.
Research in Chile's national parks shows that wildfires significantly alter soil structure and nutrient cycles, affecting ecosystem resilience. Humid temperate forests recover faster than mediterranean woodlands due to fire-adapted trees and higher rainfall.
A newly discovered Philippine pitcher plant, Nepenthes megastoma, is already at risk of extinction due to severe weather conditions and human encroachment. The species has limited population and is threatened by poaching, deforestation, and droughts.
Researchers found 13 bird species, 11 mammal species, and 2 amphibian species in Danish moss samples, demonstrating its potential for monitoring global biodiversity. The study suggests that moss-based DNA sampling could work globally due to its simplicity, effectiveness, and gentle nature.
A new systematic review examines nearly 200 scientific articles to gather knowledge on biophobia, a negative relationship with nature. The study reveals that both external and internal factors contribute to negative emotions towards nature, threatening conservation efforts.
Professor John Smol of Queen's University is being honored for his groundbreaking contributions to identifying stressors of environmental change in the Arctic. He has developed tools for detecting environmental shifts in freshwater and terrestrial ecosystems, providing key insights into the impact of global warming and human activities.
A new deep-learning tool can rapidly identify wild and farmed salmon by analyzing fish scales, with 95% accuracy. This technology has the potential to mitigate the ecological impact of escaped farmed salmon on wild populations.
Researchers at Lund University analyzed old air samples collected by the Swedish Armed Forces and found that spore dispersal of northern mosses has shifted four weeks earlier over the past 35 years. Warmer autumns enable mosses to release their spores earlier in spring, with climate conditions from the previous year being the key factor.
A new study reveals a severe decline in recruitment of the American pika on Niwot Ridge, Colorado, with fewer juvenile pikas being born or migrating to take their place. Climate change is predicted to threaten pikas in the American West, with warmer summers affecting their habitats and ability to survive.
Researchers found that rats contributed significantly to Rapa Nui's deforestation by consuming palm nuts, preventing trees from regrowing. The islanders cleared land for agriculture and used slash-and-burn practices, but the slow-growing palm trees made them vulnerable to rat predation.
A new study finds that mangrove tree stems release significant amounts of methane, offsetting up to 27.5% of the blue carbon sequestered by mangroves. The researchers' comprehensive database provides a global-scale assessment of stem methane emissions.
Researchers used drones to create detailed maps of a high-density nesting beach, identifying steepness and proximity to dune crossover stairs as key factors influencing turtle nesting success. The study provides insights into how changing coastal conditions affect sea turtle habitats, informing conservation policy and coastal development.
Seven new species of a distinctive frog-like insect belonging to the genus Batracomorphus have been discovered in Uganda's Kibale National Park. The findings are significant as they mark the first new species recorded in Africa since 1981 and add to the existing 375 known worldwide.
Researchers at the University of Konstanz develop a mechanistic model to predict biological community composition in different ecosystems. Their study confirms the high predictive capacity of the model, which can be applied to various situations involving competing organisms.
New research reveals that artificial light at night silently reshapes the carbon balance of entire continents by increasing ecosystem respiration but not photosynthesis. This has major implications for climate models and global carbon budgets, with potential effects on ecosystems, animal behavior, habitats, and natural patterns.
Researchers have recorded hundreds of narwhal interactions with moorings, suggesting that passive acoustic monitoring may not be as non-invasive as assumed. The study found that narwhals were attracted to the devices, possibly due to confusion with prey or curiosity.
A new study reveals that optimized nitrogen fertilizer use can increase yields, reduce pollution and save money for Myanmar rice farmers. Adopting ecologically optimal rates can avoid annual environmental costs of up to $368 per hectare.
A new study reveals that grassland degradation increases soil microbial diversity while reducing plant richness, leading to a decline in ecosystem functioning and multifunctionality. The research highlights the critical importance of conserving soil microbial communities for sustainable restoration of degraded grasslands.
A recent paper in the journal Science investigates the impact of drought on grasslands, finding that moderate droughts do not lead to long-term losses. In contrast, extreme droughts can cause significant species loss and reduced plant life. The study's results have implications for global carbon and climate modeling.
A University of Houston biologist has received a $2.16 million federal grant to study how some coastal frogs survive in salty environments. The research could reveal how cells cope with salt stress and have implications for understanding the health risks of high-salt diets in humans.
Research at the University of Helsinki reveals that forest thinning can temporarily boost carbon storage in upland forests, while drained peatlands become stronger net carbon sources due to slower tree growth and increased decomposition. The study highlights the importance of adapting management practices to different forest types.
Researchers found that elevated CO2 levels can cause leaf temperatures to rise by up to 1.3°C in forests, with a greater impact during extreme heatwaves. This change is likely caused by reduced transpiration and could have significant effects on the water cycle globally.
The Crete Declaration outlines how scientific cooperation can be transformed into actionable policy and robust innovation. It aims to strengthen Europe's resilience and global leadership by sharing data and expertise, developing innovative solutions, and promoting evidence-based policies.
Researchers analyzed liver and skeletal muscle samples from dead sea otters and found high levels of toxic 'forever' chemicals, linked to increased disease mortality. Concentrations were three times higher near major cities and shipping routes, highlighting a significant health risk to the species.
Researchers have developed a practical and affordable method for assessing the state of river ecosystems by using different substrates such as marble tiles, alder leaves, and cotton strips. The study found that these materials can provide valuable information on the condition of rivers and help address pollution.
A new Oxford-led study reveals Africa's wildlife ecosystems are running on less than two-thirds of their natural energy, posing risks to biodiversity and the livelihoods that depend on it. The research uses an ecosystem energetics approach to quantify how energy flows through food webs, finding that smaller species now dominate Africa'...
A global meta-analysis of biological invasions found that impacts vary over time and are shaped by ecological contexts. Invasive plants reduce native plant diversity, while abiotic effects weaken after years. The study suggests early action to prevent invasive species' impacts on biodiversity and climate change.
A new study shows that Neanderthals and Mesolithic hunter-gatherers had a significant impact on vegetation patterns in Europe, with human-induced fires and hunting affecting up to 47% of plant type distribution. The research challenges the notion of an 'untouched landscape' in Europe before agriculture.
Research at the Amazon Conservatory for Tropical Studies found that arboreal mammals, such as sloths and monkeys, use canopy bridges in the Peruvian Amazon to cross over treeless areas. The study provides insights into how forest creatures adapt to human-made structures.
Researchers found high floral scent chemodiversity attracts a wider variety of pollinators but reduces bacterial richness on flowers. The discovery supports the 'Filthy Pollinator Hypothesis', which proposes that diverse scents prevent detrimental microbial colonization.
The winners of the Applied Microbiology International Horizon Awards 2025 have been recognized for their groundbreaking contributions to global challenges through applied microbiology. The awards celebrate excellence across various domains, including drug discovery and sustainable agriculture.
A new international study reveals that nitrogen fixation occurs beneath Arctic sea ice, increasing available nitrogen for algae and potentially boosting marine life. This discovery could also impact carbon absorption in the Arctic Ocean.
The FAU Queen Conch Lab has developed mobile lab hatcheries to restore threatened Caribbean queen conch populations and promote sustainable seafood production. These self-contained units bring advanced aquaculture capabilities to coastal communities, supporting education, employment, and food security.
A global research effort by Colorado State University reveals that extreme, prolonged droughts in grasslands and shrublands result in more than twice the loss of plant productivity compared to moderate droughts. The study suggests that these ecosystems lose their ability to recover over time under prolonged dry conditions.
Researchers found that communities with green infrastructure systems like rain gardens saw a notable reduction in cadmium, copper, nickel, and zinc being sent into local waterways. Implementing more of these systems can improve water quality, make cities cooler, and enhance ecosystem services.
A recent study by University of Oulu researchers reveals significant shifts in Arctic tundra vegetation, with crowberry expansion and bilberry decline dominating the region. This long-term trend is likely linked to climate change and extensive reindeer grazing, which suppresses taller shrub growth.
Researchers at William & Mary's Batten School and VIMS have successfully restored bay scallop populations to their former range along the Eastern Shore of Virginia, with an average density of 0.114 scallops per square meter. The population is expected to double in less than 1.5 years, potentially leading to a future recreational fishery.
Research reveals that ovarian aging is not just about egg quality, but also the surrounding cells and tissues. The study found that eggs cluster in pockets surrounded by egg-free zones, which decline in density with age, influencing egg lifespan and maturation.
A team of researchers has shed light on how Europe's largest bat hunts and consumes small birds. The bats use loud and low-frequency ultrasound echolocation calls to detect prey at great distances, then pursue it in steep dives towards the ground, catching and eating birds in mid-air.
Researchers investigated tree swallow bird groups in the US and found no association between chemical exposure and reproductive health outcomes. Despite high concentrations of forever chemicals in their environment, birds were unaffected by exposure levels, indicating resilience to these pollutants.
A new study from Lund University maps the hidden highways of the sky, revealing how environmental factors and species interaction affect animal distribution in the aerial habitat. The research highlights the importance of understanding the air as a dynamic environment that requires adaptation to preserve flying animals.
Research from Umeå University reveals that natural barriers shape the flow of water and hinder plant dispersal in rivers shaped by the last Ice Age. The study found no clear correlations between drainage area and channel width, or consistent increase in plant species diversity downstream.
A study found that volcanic ash can enhance phytoplankton growth even at considerable distances from the volcanic site. Researchers detected a surge in phytoplankton levels around Mukojima Island, located 130 km northeast of Nishinoshima, after ash was transported by wind and ocean currents.
A new study reveals a dynamic community of zooplankton in the abyssal benthic boundary layer, which responds dramatically to seasonal changes in food sinking from surface waters. Deep-sea mining could have significant and unavoidable impacts on biodiversity regardless of time of year.
The IPBES report highlights five strategies to achieve transformative change: incorporating culture and ecology into conservation efforts, integrating biodiversity concerns into economic sectors, reforming governments, shifting societal values, and promoting incremental changes. The authors emphasize the urgent need for concerted effor...
A new review warns of growing heavy metal threats in reservoirs, highlighting the need for smarter monitoring and greener cleanup solutions. Researchers identify sources, risks, and promising solutions to tackle this global challenge.
A groundbreaking study found that mosses, often overlooked as mere background scenery, play a crucial role in storing carbon and stabilizing soil in subtropical forests. By including bryophytes in ecosystem assessments, scientists can identify cost-effective, nature-based solutions for climate change.
Researchers analyzed sediment cores to find a recurring 60-year cycle in carbon and silicon burial, showing human intervention led to changes in estuary ecosystems. Human activities like dam construction reduced organic matter delivery, while increased water clarity promoted algal growth.
A new study suggests that prolonged nitrate depletion delayed marine ecosystem recovery after the end-Permian mass extinction. Nitrate availability remained consistently low in South China during this period, with temperatures rising and falling to impact ocean stratification and upwelling.