Articles tagged with Species Diversity
New research from the University of East Anglia finds that hydropower developments lead to flooding forests, driving biodiversity loss and ecosystem disruptions. The study reveals widespread species extinction, especially among large-bodied species, highlighting the need for sustainable energy security and biodiversity conservation.
Researchers found that in almost two-thirds of cases, agricultural diversity had a positive effect on food security. However, the relationship was mixed or showed no effect in about one-third of cases. The study highlights the importance of preserving agrobiodiversity to ensure food systems can adapt to climate change and other stresses.
Researchers have found a 30-million-year-old beaver fossil that challenges previous theories on the evolution of semi-aquatic beavers in North America. The discovery, published in Royal Society Open Science, suggests that these animals may have evolved to swim earlier than previously thought and were likely adapted for aquatic life.
A comprehensive study reveals that nitrogen-fixers are most diverse in arid regions of the US, contrary to expectations. Plants have evolved creative ways to acquire nitrogen, and their diversity increases in these environments due to adaptations such as thicker cuticles.
Researchers studied 28 clades with 1,437 species in subtropical East Asian caves to understand biotic colonization. They found that climate changes and forest evolution drove colonization over time.
A new study by Flinders University scientists highlights the importance of prey and habitat diversity for the coexistence of Australian snubfin and humpback dolphins. The research found that subtle differences in their habitat use and prey selection promote the coexistence of these ecologically similar dolphin species.
Researchers discovered that male spiders select sexual organ with more sperm for first copulation with cannibalistic females and transfer significantly more sperm when risk is high. The study supports the male mating syndrome theory, which posits that males evolve strategies to counter female cannibalism.
Researchers have found that small mammal diversity decreased with increasing human modification and that modern communities are fundamentally distinct from past ones. Even protected spaces can conserve native small mammal communities, highlighting their importance in urban conservation projects.
Climate change is driving the expansion of invasive insect species, such as the oak gall wasp, into more northerly oak savannas. This can lead to an imbalance in the ecosystem, as these insects can overwhelm native species without natural predators or competitors.
A team of researchers at the University of Hawaii collected over 3,000 microbial samples from Waimea Valley's watershed, discovering that microbes follow the food web and are maintained within soil and stream water. The study also found that local distribution of a microbe predicts its global distribution.
A new study analyzing 72 lakes in four large Neotropical wetlands of Brazil reveals that human impacts on biodiversity compromise wetland multifunctionality. Strong associations between aquatic organism diversity and wetland functioning were found, highlighting the crucial role of species richness in driving ecosystem health.
A study of wild baboons in southern Kenya found that most carry traces of hybridization in their DNA, with about a third of their genetic makeup coming from another species. However, new genetic evidence reveals that some borrowed genes came at a cost, affecting the hybrids' survival and reproduction.
A new study used artificial intelligence to create the largest global map of insect diversity, highlighting areas with high ant biodiversity and potential conservation priorities. The researchers also found that only a low percentage of these areas are protected.
A high-resolution map of ant biodiversity has been created, revealing areas with high diversity and potential for new species discovery. The study's findings highlight the importance of protecting critical regions with high ant diversity.
A UBC research team created a computer modelling program to predict coral reef impact and restoration plans. They found that more diverse communities are most resilient, with species having unique traits contributing to habitat quality.
Researchers investigate how foraging adaptations affect Arctic charr resilience to climate change. The team aims to develop a framework linking genetic and malleable components of feeding trait diversity to population demography, habitat, and eco-evolutionary potential.
Scientists have discovered a new, venomous pit viper species in Jiuzhaigou National Nature Reserve, China. The newly described snake has unique characteristics and is found to feed on small mammals in sunny days by the roadside.
A new study in Frontiers in Microbiology found that centuries-old lava caves on Hawaiʻi Island harbor an astonishing number of previously undiscovered bacterial species, including the Chloroflexi group. These microbes play key ecological roles in their communities and may have played a crucial role in shaping life on Mars and early Earth.
Research predicts that bird species extinction will decrease morphological diversity among remaining birds at a rate greater than species loss alone. Birds with extreme features are most likely to be affected, including the largest and smallest species, as well as regions like the Himalayan mountains and south Vietnam/Cambodia.
A team of researchers, led by UTA biologist Eric Smith, has identified six new species of miniature frogs in Mexico. These tiny amphibians have evolved to retain juvenile characteristics, limiting their adult growth and size.
A study by Yale ornithologist Richard Prum and colleagues found that hummingbirds exhibit the highest level of color diversity among all bird species, with an increase of 56% in known bird-visible plumage colors.
A global survey of biodiversity experts finds that more species are threatened with extinction than previously thought, with estimates suggesting 30% of species have been lost since 1500. The study identifies climate change, pollution, and land-use changes as key drivers of biodiversity loss.
A recent study by Xi'an Jiaotong-Liverpool University provides a method to help farmers and policymakers decide whether organic farming is beneficial for the environment. The researchers analyzed international studies to find a threshold where organic farming's biodiversity gain outweighs its land requirements.
Three new hawk moth species have been discovered in The Bahamas, measuring only about the length of a vitamin pill. Their small size is thought to be an adaptation to survive harsh weather conditions such as hurricanes and drought.
The IPBES assessment report reveals that billions of people rely on wild species for food, energy, and income, with 10,000 species harvested for human consumption. However, the report warns that unsustainable use is threatening the survival of these species, driven by drivers such as land changes, climate change, and pollution.
Researchers from the University of Turku have described seven new species of tropical ferns, including six from the genus Danaea and one from Dennstaedtia. The newly discovered species range from 20cm to 2m tall and offer insights into the biodiversity of Amazonian rainforests.
A new study reveals that 41% of Vietnam's amphibian species are threatened with extinction, with many having limited distribution ranges and no conservation data available. The researchers highlight the importance of implementing targeted conservation efforts, including ex-situ programs and protected areas, to address these gaps.
Research suggests climate-driven changes in seawater density may disrupt mangrove dispersal patterns worldwide, particularly in the Indo-West Pacific region. The study, published in Nature Climate Change, highlights the importance of considering oceanic factors in understanding mangrove response to climate change.
A conceptual species 'stock market' aims to assign economic value to species and ecosystems, promoting sustainability and biodiversity conservation. The SSM would enable the valuation of ecosystem services and actions that harm or benefit biodiversity, fostering a unified approach to environmental decision-making.
A recent statewide census of California bumble bees found significant declines due to climate change, urbanization, and pesticide use. Despite finding most common species, researchers failed to locate several iconic species, including the Western bumble bee, highlighting urgent need for conservation efforts.
A new study in Frontiers in Earth Science questions the link between climate change and ecosystem diversity during the origin of dinosaurs in Argentina. The researchers found that variations in species abundance cannot be explained by climatic changes, instead attributing it to preservation and sampling biases.
A recent study published in mSystems found that high abundance of Lactobacillus crispatus is associated with a 40% lower risk of preterm birth, particularly in Black women. The study analyzed data from the Pregnancy, Infection, and Nutrition Study and stratified findings by race.
Researchers discovered over 1,200 RNA viruses linked to carbon absorption on the ocean floor. The study suggests engineered viruses could be used as 'knobs' to control carbon storage, potentially slowing climate change.
A study from Washington University in St. Louis highlights the importance of spatial aspects of biodiversity for healthy forest functioning. The research shows that tree beta diversity, a measure of site-to-site variation in species composition, is stronger than other components of biodiversity at larger scales.
The study creates a catalogue of genomic diversity for endangered chimpanzees, allowing researchers to pinpoint the origin of confiscated animals within 100 kilometers. This information can support conservation efforts and combat the illegal trade of chimpanzees.
A recent study found that even tiny marine invertebrates have distinct and diverse microbial communities, called microbiomes. These findings challenge the assumption that closely related animals share similar microbiomes.
A new machine learning tool assesses extinction risk for reptiles with limited data, revealing a higher number of threatened species than previously estimated. The study highlights the need for increased conservation efforts in regions such as Australia, Madagascar, and the Amazon basin.
A new study describes a troglobitic clam species from northern Brazil, characterized by lack of pigmentation and reduced size. The discovery highlights the importance of conserving fragile subterranean habitats threatened by recently amended laws in Brazil.
A Kyoto University study shows that even though biodiversity increases with more interactions, mean interaction strength decreases. The interaction capacity hypothesis proposes that this weakening of interspecific interactions may be due to increased community diversity.
A study comparing whole genomes of several mustelids, including the tayra and wolverine, identifies multiple sources of genomic variation contributing to species-specific traits. The research sheds light on how these adaptations evolved in response to different ecological challenges.
A team of ornithologists revised a Romanian museum collection, uncovering rare species and updated taxonomy. The study provides valuable information on the status of avifauna in the Carpathian basin during the 19th and 20th centuries.
Research reveals that multi-species forest plantations outperform monocultures in terms of tree height, width, and biomass production. This is attributed to functional complementarity between species, which enhances resource use efficiency.
Researchers from the University of Zurich and University of Montréal developed a method to assess plant biodiversity across ecosystems using satellite imaging spectrometry. The study found that spectral diversity calculations can capture differences in plant community composition across all ecosystems studied, allowing for targeted fie...
The study reveals that early animal communities exhibited complex ecological structures more than 550 million years ago, setting the stage for the Cambrian explosion. The analysis of metacommunity structure suggests competitive exclusion as the cause of the diversity drop in the late Ediacaran period.
Researchers have found that Sowerby's beaked whales are faster, more agile hunters than expected, with shorter dives and higher frequency clicks. This unique strategy may help them avoid competition among other beaked whale species.
A study of historical tiger shark jaws reveals a local southeastern Australian population has been extirpated due to shark control programs, emphasizing the need for regional management and conservation. Genetic diversity drives future evolution, and its loss can lead to reduced adaptability to environmental changes.
A new species of dusky salamander has been discovered in the Gulf Coastal Plain of Mississippi and Alabama, increasing knowledge of the region's biodiversity. The species, Desmognathus pascagoula, is similar to another recently discovered species but has distinct morphological, genetic, and geographic characteristics.
The study maps the extent of threats to highly valuable Asian rosewood species in the Greater Mekong Subregion, proposing conservation actions. Three key species - Siamese rosewood, Burma blackwood, and Burmese rosewood - face significant risks from overexploitation, fire, habitat conversion, and climate change.
Scientists have partnered with park rangers in Ecuador to monitor butterfly populations, which serve as an indicator of ecosystem health. This approach aims to provide a more comprehensive understanding of biodiversity changes over time, addressing the limitations of traditional conservation methods.
Researchers identified glacial refugia for Campanula americana and found that populations nearest the refugia had highest potential for speciation. This discovery highlights the importance of conserving habitats in Southeastern regions.
The UN Convention to Combat Desertification's Global Land Outlook 2 report warns that up to 40% of the planet's land is degraded, threatening half of humanity and roughly 1/2 of world GDP. The report offers hundreds of practical ways to restore land and ecosystem health.
A review study finds that conservation measures can greatly slow human-induced climate change by preserving biodiversity. The creation and management of protected areas are key to mitigating climate change through carbon capture and storage, with current coverage at 12-16% globally.
A study found that large mammals and birds essential for seed dispersal in the Atlantic Rainforest are disappearing due to deforestation. In contrast, smaller animals have lower interaction levels with plants.
A new study reveals that freshwater habitats have the highest animal species richness per area, with more than 99% of known animal species inhabiting land and 12% ocean habitats. The research suggests that preserving freshwater ecosystems can protect more species and evolutionary history.
New research from Washington University in St. Louis shows that crows and ravens' diverse traits enabled their rapid global expansion. Their intelligence allowed them to adapt to new environments, while their big bodies gave them a competitive advantage.
A new study by University College London (UCL) researchers found that climate change and intensive agricultural land use have already led to a 49% reduction in insect populations in the most impacted parts of the world. Insect declines are linked to rising temperatures and land use changes, with tropical areas seeing the biggest declines.
Researchers developed nationwide maps of bird species to aid conservation efforts, providing fine-resolution data for individual counties or forests. The maps predict bird diversity based on traits such as nesting habits and environmental factors like forest cover and temperature.
Human activity on Hainan Island is causing changes in the body shapes and diets of tropical birds, resulting in biotic homogenisation. Despite efforts to protect biodiversity, the island's unique ecosystem is being affected by large-scale economic and land-use changes.
The study found that richer nations increase species extinction risk in poorer ones due to global consumption patterns. The impact of a single coffee purchase can contribute to biodiversity loss in distant countries.
A new study shows that meadow ecosystems rely on 2.5 to 7.5 times more bee species for pollination than a single plant species does. Rare bees play a crucial role in pollinating plants no one else visits, emphasizing the importance of biodiversity.