Articles tagged with Species Competition
Researchers discovered that short- and long-range weapons perform differently depending on the competition scenario, with long-range toxins becoming effective at high density and low initial numbers of competing bacteria. This study could help engineer beneficial microorganisms to out-compete pathogenic strains.
Researchers found that cancer cells with multiple mutations alter cell competition, allowing them to infiltrate and form highly invasive tumors. The study identified a key mechanism, MMP21, which promotes the production of diffusely invasive cancer cells.
A team of experts identified 15 over-looked issues that could impact UK forests, including catastrophic ecosystem collapse, competition for water resources, and tree viral diseases. The research calls for urgent action to increase forest resilience.
A global survey of restoration projects reveals that most efforts fail to address the impact of herbivores on young plants. By introducing predators or barriers, conservationists can increase plant regrowth by up to 89% and speed up restoration outcomes.
A meta-analysis found that prioritizing native species can increase invasion resistance by over 50% and reduce invasive alien species' performance. High-density seeding of functionally similar or multifunctional seed mixtures is effective in controlling invasive species, with priority effects strengthened by increasing time advantage.
A recent study led by ecologists from the Hebrew University of Jerusalem investigated how desert isopods select burrow sites amidst looming predators. Larger female isopods displayed a preference for safer burrows, emphasizing the importance of size and safety in their breeding site choices.
Researchers at Kyoto University have found three new species of animals living together in harmony with worms in dead coral rocks. The discovery highlights the importance of community structure and biodiversity patterns in cryptofauna, suggesting that symbiotic relationships are omnipresent in the ocean.
A new study reveals that bumblebees can effectively fend off Asian hornets by dropping to the ground, a strategy that has not been observed in other pollinators. However, despite this successful defense mechanism, bumblebee colonies still experience reduced growth rates in areas with high numbers of Asian hornets.
Research reveals that female fruit flies pre-select for males with superior genes before influencing sperm storage to ensure compatible fertilization. The study provides new insights into the mechanisms and consequences of mate choice, shedding light on genetic variation and species evolution.
A recent study published in Journal of Ecology reveals how natural regeneration develops in protected European forests. The researchers found that positive interactions between trees are rare and dependent on tree species and environmental factors.
A review of 82 studies found human activities influencing insect habitats, leading to declines in Central and Western Europe. Agricultural activities, urbanization, and climate change are identified as primary drivers of observed changes in insect populations.
Researchers propose a novel theory of aging that suggests cell competition is a key factor in the process. The selective destruction theory (SDT) proposes a mechanism of aging that is independent of accumulating damage and consistent with epigenetic rejuvenation.
Researchers found that competition between beneficial bacterial strains degrades the service they provide to plants, resulting in smaller benefits. The study used native California plant and eight compatible nitrogen-fixing bacterial strains to directly measure their ability to infect plants and provide benefits.
Research found that financial payments by developers to compensate for environmental consequences are insufficient to achieve intended outcomes. Only 0.7 of 13.4 hectares of impacts on koala habitat have been offset through financial payments since 2018, raising concerns about the future of this endangered species.
Researchers found that Colletotrichum godetiae displaces C. nymphaeae in Petri dishes even with a spore quantity disadvantage. The study revealed that C. godetiae is more competitive and resistant to copper, but its dominance is not explained by classical ecological theory.
Research reveals that prescribed burns create favorable conditions for stinknet to spread, outcompeting native plants and reducing soil health. Targeted treatments after burns can help mitigate this issue.
A study in Washington state found that when wolves and cougars moved into an area, coyotes and bobcats shifted their movements into regions with higher levels of human activity. However, it was humans who finished off the smaller predators, with over half of the coyotes killed by people during the study period.
Scientists discovered that smaller brontotheres faced high extinction risk in crowded ecological niches, driving biased diversification towards larger sizes. This complex macroevolutionary pattern shows increased survival of larger species due to reduced competition.
Interactions between gut bacteria may limit antibiotics' effectiveness in treating C. difficile infections, a study suggests. Researchers found that certain bacterial species make the bacterium tolerant to metronidazole and increase its abundance.
Researchers found that wolf spider species in Nebraska exhibited similar diets, with many eating the same types of prey. This suggests a complex food web where predators are not just competing for resources, but also engaging in cannibalism to regulate their populations and stabilize the ecosystem.
West Virginia University is leading a $20 million project to elevate neuroscience research, diversify the workforce, and enhance education. The initiative aims to study synaptic plasticity, expand data science education, and promote participation from underrepresented groups.
Research at Kyoto University found that spider mites avoid caterpillar traces due to a repellent effect, lasting days. This discovery may lead to the development of a safer and longer-lasting spider mite repellent derived from natural substances.
Researchers found that male sea lions have increased in size and strengthened muscles for fighting, while females' body size remained stable. They also diversified their diets to overcome food shortages and adapt to changing prey availability.
A new Concordia University study found that the rapid growth of urban honeybee-keeping is adversely affecting nearby wild bee populations. The researchers compared bee population data collected from sites around Montreal in 2013 and 2020, finding a decline in wild bee species richness associated with increasing honeybee abundance.
In a 50-generation evolutionary experiment, male beetles from lineages with intense sexual selection produced lower quality offspring after DNA-damaging radiation. This suggests that males invest more in competition at the expense of DNA repair, impacting future offspring survival and fertility.
A team of paleontologists used the history of steam engines to test competitive exclusion theory, finding limited evidence supporting its role in extinction. The researchers analyzed data on tractive effort, revealing that newer engines generated more power, making steam locomotives less efficient and eventually obsolete.
A recent study published in Proceedings of the Royal Society B found that more social bird species tend to be weaker competitors. However, when present in groups, these species exhibit increased competitiveness and displace less social birds from feeders.
Bowhead whales are shifting their migration patterns due to declining sea ice in the Arctic, affecting their long-term health and impact on Indigenous communities. The lack of ice is causing changes in bowhead availability for hunters, leading to competition for resources and increased human interaction.
Researchers at NIH's National Human Genome Research Institute identified a gene, KTD1, that provides resistance to the K28 toxin in yeast. This discovery sheds light on the molecular mechanisms underlying toxin resistance and has implications for understanding human toxin resistance.
Research from Imperial College London and University of Exeter reveals that cooperative microbial communities release more carbon dioxide than competitive ones, contributing significantly to climate change. This finding has far-reaching implications for understanding the impact of temperature changes on global carbon cycles.
Researchers at the University of Arizona found that rock ants follow a methodical search strategy, combining systematized meandering with random movement to efficiently explore new areas. This unique behavior may provide insights into the evolution of exploration strategies in other species.
Researchers discovered that certain microorganisms dominate burned soil after a wildfire, with some species increasing in abundance and others consuming charcoal. This finding could help revive megafire dead zones and provide insights into the human microbiome's response to stress.
A study in a subtropical forest found that arbuscular mycorrhizae (AM) trees outperform ectomycorrhizal (EcM) trees in high-diversity ecosystems due to more efficient nutrient-acquisition strategies. In contrast, EcM tree monocultures had reduced net primary production and were dominated by pathogenic fungi.
New research shows that bonobos react faster to emotionally charged photos of strangers than neutral ones, unlike humans who focus on family members' emotions. This finding supports previous studies showing bonobos are xenophilic animals attracted to unfamiliar conspecifics.
A recent study by Lancaster University found that coral bleaching events alter the behavior of butterflyfish, making it harder for them to recognize competitor species. This change leads to poorer decision-making, resulting in wasted energy and increased aggression.
A new mathematical model has found a clear trend towards mutualism in ecological interactions, with most relationships eventually leading to a mutually beneficial partnership. The researchers used adaptive dynamics and classical models of population dynamics to study the transitions between different ecological relationships.
New research shows climate change played a key role in dinosaurs' rise to success during the Late Triassic and Early Jurassic periods. The planet's warming after the Triassic-Jurassic mass extinction event allowed sauropod-like dinosaurs to thrive and expand across new territories, becoming the dominant species.
In a surprising twist, researchers found that starving Argentine ants exercise caution when foraging in high-risk environments, unlike expectations. This counterintuitive strategy may contribute to their success as an invasive species and agricultural pest.
A new study found that when there are more females than males in colonies of orb-weaving spiders, males fight less with each other and females exhibit less aggression. The researchers also observed cooperation among spiders in constructing their webs and wrapping prey in silk.
Forests with multiple tree species have been shown to be more productive, as different species fill distinct niches and compete less. Additionally, genetic diversity within each tree species also promotes forest productivity by increasing resource use efficiency and reducing damage from herbivores and fungi.
An interdisciplinary team will uncover complex biological systems and develop tools to globally document coral reef health changes. The research aims to understand how herbivory rate at the ecosystem scale emerges and shapes the ecosystem, ultimately informing management of ecosystems.
A new study published in Collective Intelligence journal suggests that evolutionary forces may be fueling collective tendencies to discriminate. The research recommends fostering environments where desired behavior emerges naturally through evolutionary dynamics rather than regulating against undesired outcomes.
The invasive spotted wing drosophila competes strongly with other fruit-eating species, causing massive ecological impacts on forests. The fly's presence alters fruit composition and visual cues, reducing consumption by birds and potentially disrupting seed-dispersal mutualisms.
Researchers found that closely-related rhododendron species in China's Hengduan Mountains coexist by bursting into bloom at different times of the season. This diversification allows them to reduce competition for resources and pollinators, enabling their survival.
Trinidadian killifish exhibit larger brain size in high-competition environments, increasing their ability to forage and survive. The study provides experimental evidence that brain size is an adaptive trait in dense populations.
Research found that native predatory fish like jacks and barracuda feed on Australian mullet, an invasive species introduced to Oahu waters. This shift in diet helps control the invasive mullet population, which competes with native fish for resources.
Researchers measured plant-soil feedbacks for six perennial prairie grass species using a short-term greenhouse study. The findings did not match outcomes observed in a long-term field experiment at Minnesota's Cedar Creek Ecosystem Science Reserve, highlighting the limitations of short-term experiments.
Research on ostriches found that optimal breeding group sizes vary depending on the balance of males and females within it. The study showed that males have a single optimal group size, while females have multiple optimal sizes due to cooperative care. Intermediate-sized groups were not optimal for reproductive success in either sex.
Researchers documented social ties between individual chimpanzees and gorillas that persisted over years and across different contexts. The study found enhanced foraging opportunities to be a key benefit of interspecies social interactions, with apes sharing knowledge of diverse plant species.
Researchers have identified a complex of proteins in a tiny marine invertebrate that share similarities with the human immune system, suggesting an earlier origin for the building blocks of our immune system. The study could ultimately guide the development of new immunotherapies and improve understanding of transplant rejection.
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 studied mute and whooper swans, finding a trade-off between aggression and rest. The study suggests that providing enough foraging spots can reduce the need for aggression, allowing birds more time to rest.
A University of Washington study found that Pacific salmon in larger groups have lower predation risk, but may trade safety for food. The researchers analyzed historical data on fish catches and predator wounds to estimate group size and predation risk, revealing the benefits and costs of schooling in marine fish.
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.
Researchers found that livestock grazing had no negative impact on snow leopard distribution or density, and the species can coexist due to their separate ecological niches. The study suggests a more nuanced approach to conservation and land use, prioritizing the preservation of rocky mosaics.
A team of researchers discovered that a single gene, AOP2, plays a critical role in maintaining species diversity in an ecosystem. The study found that mutations at this gene can dramatically alter the structure and function of an ecosystem.
A new study reveals that the giant camel Camelus knoblochi lived in Mongolia with anatomically modern humans until climate change led to its extinction. The species likely competed with its critically endangered relative, the Bactrian camel, for resources.
New research suggests Joro spiders could colonize the entire East Coast of the US due to their ability to withstand cold temperatures. The spiders' fast metabolism and high heart rate also contribute to their potential spread.
Regulated hunting can reduce population density, allowing fewer animals to compete for resources during harsh winter conditions. This approach can stabilize population fluctuations and buffer the impacts of extreme climatic events on species with limited food resources.
Researchers at the University of Montana found that Yellowstone wolves' handling times increase when bears are present, and they move back and forth from kill sites to avoid confrontations. This dynamic affects wolf behavior and kills rates in the presence of bears.