Articles tagged with Local Populations
Ancient DNA study reveals Bronze Age women replaced local population in Orkney, contrary to historical assumptions about European expansion trends. Genetic analysis suggests a complex and varied process of negotiation between indigenous males and newcomers from the south over many generations.
Despite low vaccine uptake, West Africa needs to boost vaccination efforts to achieve population-level immunity. To reach 50%, 60%, and 70% coverage after 9, 12, and 18 months, vaccination speeds must increase by 4, 7, and 10 times the current pace.
A recent study published in Methods in Ecology and Evolution found that local environmental knowledge is a valuable tool for conservation in the Amazon, comparable to other scientific methods. Local ecological knowledge proved to be more accurate than 10 years of conventional scientific monitoring for animal abundance in the Amazon.
Researchers found that 44.3% of the Mbendjele BaYaka population had hazardous alcohol consumption, associated with mental and physical health harms like high blood pressure and increased diarrhoea rates. The study emphasizes the need for community involvement and socioeconomic changes to address the underlying drivers of poor health.
A high-resolution map of Arab and Middle Eastern population genetics has been unveiled, providing new insights into human history in the region. The study revealed that ancient populations in the Arabian Peninsula played a central role in early human migration out of Africa.
Patients from minority ethnic groups have a disproportionately higher rate of emergency hospital admissions due to comorbidity profiles and earlier onset burdens of diseases. The study found that these disparities are not reflected in commonly used measures like survival rates.
Researchers found Philippine Negrito ethnic group, Ayta Magbukon, possess the highest level of Denisovan ancestry in the world. Their Denisovan DNA is up to 46% greater than that of Australians and Papuans.
Researchers discovered that almost half of patients who received personalized information about community resources shared them with at least one other person. Individuals in poorer health were more likely to report sharing the information, and those who visited or used a resource on their list were also more likely to share it.
African researchers identify ancient El Niño-like weather patterns as major climate drivers, challenging existing views on human evolution. The 'climate seesaw' shifted rainfall between eastern and western Africa over 100,000 years, influencing vegetation, mammal fauna, and human dispersal.
Geographers at Heidelberg University created a full inventory of seasonal aufeis fields in the Upper Indus Basin, discovering over 3,700 fields across 300 square kilometers. These natural reservoirs play an essential role in hydrology and climatology, particularly in irrigation and hydropower generation.
New research from Trinity College Dublin suggests a correlation between increasing Sika deer populations and higher local bovine TB infections in Ireland. The study found that County Wicklow is a hotspot for both Sika deer and TB infections.
A comprehensive review reveals the benefits of firefly tourism, including economic and social gains, but also highlights threats to local firefly populations. The authors urge site managers, tour guides, and tourists to adopt tailored conservation practices and promote eco-friendly behavior to protect these charismatic creatures.
Research shows that mammals with larger brains tend to be less abundant in local areas than those with smaller brains. This is because bigger brains require more food and other resources, leading to a need for more space. Understanding which animals are most abundant in different areas is crucial for conservation.
Researchers found that Asian and Hispanic populations contribute to local food culture, with restaurant availability linked to education levels of the white majority population. The study tested three models of assimilation and primarily found evidence for relational assimilation.
Research finds that xenophobic attitudes towards migration are widespread in East German communities, unaffected by the arrival of refugees. Negative attitudes prevail despite personal exposure to refugees, with some right-wing and left-wing groups converging on moderate views when receiving refugees.
The study found that Laotians rely heavily on wildlife for food and income, driving the illegal trade of terrestrial vertebrates. Approximately 90% of respondents confirmed using wildlife products, highlighting the need for conservation measures to protect native species.
A new five-step protocol aims to reduce mortality of threatened birds of prey due to accidents with infrastructures. The protocol identifies sink populations, frequented areas, and high-risk infrastructure features to improve conservation actions.
Researchers have found that South Australia's Grey-headed flying fox population has developed antibodies for Hendra, Cedar and Tioman viruses, indicating exposure. No evidence of Australian bat lyssavirus transmission was found, reducing the risk to humans in the region.
Archaeologists analyzed deformed skulls at Mözs-Icsei d?l? cemetery, finding three distinct groups with varying cultural backgrounds. The community's diverse traditions suggest a brief period of collaboration between local Roman and foreign migrant groups.
A new study found that local Atlantic salmon produce vastly more offspring than those spawning on unfamiliar grounds. This 'home ground advantage' may help wild salmon populations and inform conservation efforts.
Research analyzed data from 500,000 observations at 5,000 sites in North America to find the main cause of amphibian decline. The study found that 3.4% of species are disappearing annually, with declines occurring since the 19th century.
The Bocas dolphin population in Panama's archipelago is genetically isolated and faces high risk from increasing local boat traffic. The study suggests designating the population as 'endangered' due to low numbers and high mortality rates.
Research on US-Mexico border walls highlights potential biodiversity impacts, including isolated local populations and reduced species movement. Human passage, however, appears to be less affected by the barriers.
A University of Missouri-Columbia professor developed a mandatory medical school curriculum focusing on indigenous health, addressing significant health inequalities among Native Americans. The curriculum was implemented in 2014 and has been recognized as a model for other universities to follow.
A Dartmouth-led study finds that roads trigger rapid evolutionary changes in wild populations, with some species adapting to pollutants and others becoming maladapted. This shift is transforming scientists' views of the biological impacts of roads on ecosystems.
A new study by the Scripps Institution of Oceanography has challenged the assumption that oceanic manta rays are long-distance travelers. The research team found that these massive creatures tend to stay close to their local habitats, suggesting a high degree of residency behavior.
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.
Despite increased diversity efforts, underrepresented minority faculty numbers have stagnated, with only modest increases in recruitment and promotion. Minority faculty development programs were found to be ineffective in enhancing the representation of underrepresented minorities on medical school faculties.
A study by Jordan Smith found that residents in growing communities trust information from family members, churches, and local newspapers more than elected officials or national news sources. This shift can lead to conflicts over values and ideologies, complicating long-term environmental and community planning.
Scientists have discovered two new species of earthworms in the Mongolian Gobi Desert that possess extreme temperature tolerances and can partially regrow body parts when cut in half. The discovery sheds light on the fascinating world of earthworms, which play a crucial role in soil fertility and food chains.
A new study assesses global land and water grabbing, revealing its impact on food security in impoverished countries and the environment. The phenomenon has intensified due to rising world food prices, with Africa and Asia accounting for most grabbed area.
A new study published in Molecular Ecology found that most southern right whales born near New Zealand's sub-Antarctic islands were fathered by local males, indicating strong local fidelity to breeding habitat. This finding suggests that the New Zealand population is relatively isolated from other populations, which could have implicat...
Researchers found that crown-of-thorns sea stars originate from local populations, rather than spreading across large distances via larval dispersal. Genetic analysis revealed significant genetic differences among reefs and habitats within the same island.
A new CU-Boulder study assesses 69 historical sites in the Southern Rockies and finds that 65 of them are still occupied by pikas, contrasting with a recent Great Basin study showing local extinctions increasing five-fold. The team found that drier conditions at abandoned sites may be driving pika disappearance.
A new study combining short-term and long-term data found that rapid evolution does not always persist, and major changes tend to take around 1 million years to occur. The research supports the concept of 'punctuated equilibrium' and suggests that natural selection forces must be widespread for changes to accumulate.
Conservationists may better protect mammal populations by treating their ranges as multiple interacting small populations. This approach considers local environmental factors that influence animal resiliency and can provide a more accurate picture of how species' ranges collapse due to human encroachment.
Researchers found that local populations of Joshua trees and their pollinating moths are not as biologically diverse as expected, contradicting previous theories. The study suggests that co-evolution between the species can actually decrease diversity within each species.
A new study found that the US adult obesity burden has significantly increased since 1993, with quality-adjusted life years (QALYs) lost due to morbidity and mortality from obesity more than doubling. The prevalence of obesity for US adults rose from 14.1% to 26.7%, and obesity-related QALYs lost followed a similar pattern.
A recent study by Queen's University Belfast found that hares are eighteen times more abundant in areas managed by the Irish Coursing Club than similar sites in the wider countryside. This suggests that active population management positively increases hare abundance.
A recent study found that introducing new genes from distant populations to damaged ecosystems can have negative consequences on native populations. However, the introduction of genes from nearby, contrasting environments can lead to poorer seedling performance and reduced fitness over time.
A workshop in Colombia aims to raise awareness and protect communities near the dangerous Galeras volcano through collaboration between scientists, government officials, and local residents. The goal is to develop a consensus on how to mitigate volcanic risks, using existing hazard maps and safety plans with updated research.
Recent study reveals coral species tend to stay close to home, with high local genetic diversity important for conservation. Marine reserves should prioritize locally sourced coral recruitment to maintain healthy populations.
Using genetically diverse seed sources can improve revegetation outcomes for native flora, as local seed may be inbred and lead to poor results. The review recommends focusing on capturing high-quality seed to ensure restored populations have ample genetic diversity.
A recent study by LSU professor Matthew Lee found that civic participation and local stability are crucial in preventing violent crime in rural areas. Rural communities with high levels of home ownership, stable populations, and robust middle-class economies tend to have lower rates of violence.
A recent study found that patients in Medicaid managed care programs tend to receive lower-quality care compared to those in commercial managed care programs. The study analyzed data from 383 health plans and found that overall commercial population performance exceeded overall Medicaid population performance in most measures.
A new study finds that climate change is isolating groups of alpine butterflies in the Canadian Rockies, leading to population decline and increased risk of local extinction. The expanding forests and reduced prescribed burns are limiting the butterflies' ability to fly and reproduce, threatening their survival.
Researchers found that extinction-proof population sizes are impossible to predict based on species characteristics alone. The study highlights the complexity of extinction risks and challenges traditional assumptions about species survival.
Conservation efforts have led to a significant decrease in poaching, reducing turtle egg removal from nearly 100% to approximately 21% on the Pearl Cays. Beach surveys and active protection of females and their eggs are crucial for the survival of this endangered species.
A study by Rothermel and Semlitsch found that juvenile amphibians preferentially use corridors of natural vegetation to move through fragmented forests. The researchers also discovered that these animals lose more water in open fields, making forest habitats a safer choice for survival.
A recent study by Dr. Whit Gibbons has discovered the smallest and youngest non-hatchling Blanding's turtle ever recorded, just two and a half inches long and four years old. The finding highlights the importance of understanding the species' life cycle and habitat needs to inform conservation efforts.
Researchers found that suppressing natural fires harms Northern Idaho ground squirrels, isolating them into shrinking groups where non-native plants overtake fire-resistant seed-laden grasses. The biologists propose two solutions: restoring habitat and reintroducing controlled fires to restore native vegetational structure.
A recent census reveals that Grauer's gorilla populations have remained stable despite growing human pressures, with 16,900 individuals estimated. However, local populations are increasingly threatened due to poaching and habitat loss, highlighting the need for continued support of conservation efforts.
Researchers calculate that populations are going extinct at a rate three to eight times faster than species loss, with significant implications for ecosystem services and human dependence on nature. The study reveals the often-overlooked benefits of individual populations, including genetic material and crop production.