Articles tagged with Natural Populations
Researchers found metal-tolerant trout populations in British and Irish rivers are genetically distinct due to high levels of metal pollution. The lack of genetic diversity in these populations makes them more susceptible to environmental changes.
A deadly epidemic discovered last year in the Red Sea has spread to the Indian Ocean, annihilating most sea urchin populations and threatening coral reef stability. The researchers identified a scuticociliate parasite as the cause of the mass mortality.
A new study found that genetically engineered canola plants with pesticide resistance are persisting in roadside populations, but may be losing their engineered genes. Almost a quarter of the feral plants were found to not contain transgenes.
Researchers have found that a parasitic worm, Eleaophora schneideri, is likely contributing to the decline of moose populations in some regions. The study found microfilariae scattered throughout the brains of infected animals, leading to potential increased morbidity and mortality.
A recent study published in Proceedings of the Royal Society found that birds on islands are more evolutionarily similar and diverse than expected, with more species thriving in agricultural areas. The research suggests that there may be fundamental principles of ecology at play, influencing bird evolution on islands.
Two groups of leaf-nosed bats, one small and one large, are an example of parallel evolution where they evolved similar features independently despite living on the same islands. The larger bats have adapted to eat bigger prey, using lower sonar frequencies, while the smaller bats use higher frequencies.
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.
Researchers found that first-generation, wild-born descendants of hatchery-origin Chinook salmon produced more adult offspring than hatchery-origin salmon, improving reproductive success. This study offers hope for recovering endangered populations using hatchery-origin salmon.
Researchers analyzed a 40-fold high-coverage genome from a historical museum specimen and found no inbreeding or detrimental mutations, indicating the species' ability to adapt to long-term low population size. The study suggests that European colonization was a key factor in the blue antelope's extinction.
A recent study found that 78% of the world's bird species struggle to thrive in heavily modified environments, leading to declining populations and increased risk of extinction. Conservation efforts can be targeted towards species most sensitive to human activity, such as the Great Snipe and Nkulengu Rail.
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.
A recent study reveals that the demand for critical minerals in Africa is putting African Great Apes at risk due to deforestation and habitat destruction. The study estimates that more than 180,000 gorillas, bonobos, and chimpanzees are at risk, with West African countries like Guinea being the most severely affected.
Zooplankton biomass and behavioral patterns have been altered by human-driven changes in water temperature and food webs. The study found that warming temperatures and invasive species modify the timing of certain events in their life cycles.
A new study published in Frontiers in Public Health assesses the risks of global population growth on ecosystems and human societies. The experts argue that empowering women to make choices about their fertility is crucial but not enough, highlighting the need for policies addressing child health, food security, and climate change.
A study published in PLOS ONE predicts that climate change will inundate over 4,200 archaeological sites along the US state's coast, with nearly 5,000 at risk by 2100. The authors used a predictive model to account for storm surge events, highlighting the need for cultural heritage managers to take action.
Scientists studied thousands of public photos to track humpback whale populations, finding they're responding to food availability changes affected by climate change. The population declined by 7,000 individuals from 2012 to 2021 due to a massive marine heatwave and reduced prey.
A genetic study reveals two distinct clusters of deer populations in Nara, Japan, highlighting the need for reconciliation among stakeholders. The research emphasizes the importance of careful management to address conflicts between preserving sacred deer lineage and allowing admixture for conservation.
A new study from Uppsala University found that increased access to water in arid areas can lead to a surge in demand for water and pasture, threatening the livelihoods of nomadic livestock farmers. The research highlights the need for effective management of water infrastructure to ensure climate resilience.
A gene variant in Andean people is associated with reduced red blood cell count, enabling them to thrive at high altitude. The study aims to understand genetic differences underlying variation in oxygen saturation among COPD patients.
A new study published in Science found that eradicating non-native animals to protect plant species can be a flawed practice, costing millions and slaughtering healthy wild animals. The research compared the effects of native and introduced large herbivores on plant communities, finding no significant differences.
A new study found that relocated songbird chicks can successfully learn the diversity of songs they need to communicate and survive. Despite an initial lack of song diversity, the population recovered as it increased in size, suggesting that translocating nestlings may not lead to long-term problems.
A new study reveals how sika deer foraging is causing soil erosion, reducing the growth of Japanese beech trees. The research found that exposed roots are more vulnerable to water loss, affecting tree health and increasing vulnerability to climate change and pests.
A new study published in Palaeontologia Electronica shows the Megalodon was more slender than earlier studies suggested, changing our understanding of its behavior and impact on ancient ocean life. The revised model suggests a longer digestive canal, potentially leading to less predation pressure on other marine creatures.
Research using thermal imaging found that numbats are prone to overheating during hot weather, with body temperatures exceeding 40°C. Their unique fur mechanism allows for heat exchange, but is limited by temperature and shade availability.
A study found that Spanish butterflies are better at regulating their body temperature by basking in the sunshine compared to British counterparts. However, rising global temperatures due to climate change may put Spanish butterflies at greater risk of extinction if they cannot adapt quickly enough.
A large-scale study found exposure to low and high biothermal stress during pregnancy linked to a higher risk of babies being born too small or large for their gestational ages. The study also identified specific subpopulations at higher risk, including non-Caucasian people and those aged 35 and above.
A new study published in Science Advances suggests that protected areas for elephants are most effective when connected to allow populations to stabilize naturally. This approach, known as 'connecting parks,' enables herds to move freely and absorb immigrants, reducing the need for human intervention.
A recent study using DNA barcoding technology has updated the list of Israel's freshwater fish species, revealing 37% previously unknown. The research highlights the unique genetic distinctiveness of these populations and their implications for conservation efforts in arid regions.
A new method can help estimate the prevalence of disease in free-ranging wildlife by accounting for animal clustering. This approach may reduce the number of samples needed to detect a disease. The researchers focused on Chronic Wasting Disease (CWD) in deer, which tends to cluster in family groups, making this method particularly useful.
A study by the University of Exeter and the Bat Conservation Trust found that Britain's tree felling for colonial shipbuilding led to a significant decline in Western barbastelle bat populations. The study used DNA analysis to discover a historical decline, which coincided with widespread tree-felling from about 500 years ago.
Researchers have developed a new web-based software platform called Wildfire Safe Egress (WISE) that allows emergency planners to design custom-made evacuation plans. The tool uses data on demographics and road networks to simulate wildfire scenarios and calculate safe evacuation probabilities. By analyzing the Camp Fire disaster, rese...
A new study has overturned conventional wisdom on wild turkey nesting survival, revealing that precipitation levels during nesting season are not related to reproductive success. The researchers found that temperatures above historical averages were associated with higher rates of daily nest survival during incubation.
A multidisciplinary study reconstructed the genomic history of the Balkan Peninsula during the first millennium CE, highlighting cosmopolitanism of the Roman frontier. The analysis revealed a large demographic contribution of people from Anatolia and cases of long-distance mobility from Africa and the steppes.
A new study found that the presence of seabirds on islands adjacent to tropical coral reefs can boost coral growth rates by more than double. Coral reefs near seabird colonies can bounce back much quicker from bleaching events, with recoveries happening around 10 months faster.
A study of wild orangutan males reveals that simply beating rivals in competitions does not lead to siring success. Instead, successful fathers spend more time near the females with whom they mate, suggesting a strategy of concentrating on one neighborhood rather than roaming widely is key.
A team of researchers used trail cameras and GPS collars to track the effects of Cyclone Idai on Gorongosa National Park's mammal community. They found that body size was a key predictor of survival, with smaller animals more vulnerable to the storm's impact.
A new study has found that non-native species tend to mirror Earth's biodiversity patterns, with around 37,000 invasive species described worldwide. The researchers discovered that certain groups of species, such as mammals and plants, are disproportionately prone to establishing in new areas.
Research shows some barnacles morphing to protect themselves from predators, while others remain unchanged in cooler regions. The study found bent morphs prevalent in warmer waters, but absent in colder areas.
Eastern North Pacific gray whales experience extreme population swings due to changing Arctic Ocean conditions. Long-term monitoring data reveals a bumpy ride in response to variable ocean conditions.
Researchers found a 70% reduction in wild pig populations and a corresponding decline in environmental rooting damage within 24 months of control efforts. The study suggests that management efforts exceeding 40-60% population removal per year can significantly reduce populations, but unknown is the rate of recovery if efforts cease.
Researchers analyzed 78 documented incidents of porpoise harassment by Southern Resident killer whales from 1962 to 2020. The study suggests three plausible explanations: mismothering behavior, limited opportunities to care for young due to malnutrition, and a specialized salmon diet that makes eating porpoises highly unlikely.
Despite high levels of inbreeding, the Svalbard reindeer population has developed adaptations to thrive in extreme Arctic conditions. Researchers found that inbreeding may help eliminate harmful mutations, leading to a viable and genetically resilient population.
Research finds that water movement between lakes can transport environmental DNA, making eDNA a promising tool for tracking aquatic species and monitoring biodiversity. The study highlights the importance of considering landscape connectivity when designing eDNA surveys to ensure accurate biodiversity assessments.
Accelerometer sensors can detect sickness behavior in wild boar, allowing for early detection of African Swine Fever. The study found that infected boars were 10-20% less active daily than healthy ones, making this technology a potential tool for disease control and prevention.
African lion populations are declining due to various threats including habitat loss, prey depletion, and human-wildlife conflict. A new study reveals the importance of considering both ecological and socio-political factors in conservation strategies.
A recent study using a novel method called FitCoal revealed a severe bottleneck in the human population that occurred approximately 117,000 years ago. This event led to a significant loss of genetic diversity, with an estimated 65.85% of current genetic diversity lost, but it also contributed to the formation of modern human chromosome 2.
A new global biodiversity observing system (GBIOS) is proposed to combine technology, data, and knowledge from around the world to monitor biodiversity change and target conservation action. The system can provide the information needed at the pace required to support countries in achieving their biodiversity goals.
Researchers find catastrophic breeding failure for emperor penguins due to Antarctic sea ice loss. The study indicates that over 90% of emperor penguin colonies will be quasi-extinct by the end of this century, based on current global warming trends.
The rare moss Takakia has developed unique adaptations to survive frost, high UV radiation, and extreme altitudes. Climate change is altering its natural habitat, posing a threat to this ancient species.
A recent study suggests that ancient Mesoamerican cities, such as Caracol and Teotihuacan, withstood environmental challenges like drought and earthquakes due to their advanced infrastructure and socio-economic systems. These cities' resiliency is often overlooked in historical accounts of their collapse.
A recent study led by McGill University estimates that the European Union will face significant economic losses due to biological invasions, with costs projected to reach over €142.73 billion by 2040. The study highlights the need for effective management and collaboration to address this threat.
Internet search trends indicate a growing prevalence of biophobias worldwide, particularly in countries with large urban populations. Researchers analyzed search interest for various biophobia types and found an association between urban living and increased fear of certain organisms.
A study by Max Planck Institute of Animal Behavior found that American mink can regain almost full ancestral brain size within 50 generations after escaping captivity. This reverses the long-held assumption that domestication causes permanent brain size loss in animals.
A new study found that birds produce fewer young if they start breeding too early or late in the season, with climate change resulting in earlier springlike weather. The researchers report that birds have been unable to keep pace with the changes, leading to a mismatch between the start of spring and birds' readiness to reproduce.
A new method developed by the Max Planck Institute of Animal Behavior has counted Africa's largest bat colony using GoPro cameras and artificial intelligence. The estimate puts the colony at between 750,000 and 1,000,000 bats, making it the largest for bats by biomass anywhere in the world.
A new study using satellite data from over 7,000 global reservoirs found that total storage capacity has increased, but the filling rate is lower than anticipated. The analysis suggests that addressing future water demands cannot rely solely on constructing new reservoirs, highlighting the need for novel management strategies.
A new study highlights the potential of living cell banks to contribute to global conservation priorities. Cryo-banked samples provide crucial genetic diversity and reintroduction opportunities to increase adaptability and resilience in threatened species.
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.
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 global conservation basic income of $5.50 per day for protected areas residents in low- and middle-income countries could cost less than fossil fuel subsidies. This unconditional cash payment targets Indigenous Peoples and local communities to support land stewardship and biodiversity.