Researchers found that invasive plants will likely extinguish native plants in the wild over time, contrary to recent reports. The 'extinction debt' occurs hundreds of years after initial invasion, where native species slowly go extinct but not immediately.
The 244-million-year-old Thalattoarchon saurophagis, a giant ichthyosaur, provided significant findings on the recovery of modern marine ecosystems following a severe Permian extinction. The discovery sheds light on the dynamics of evolving planet and its impact on today's environment.
A recent study using dental microwear texture analysis found no evidence of increased starvation in saber-tooth cats before their extinction. Instead, the research suggests that these great cats and American lions were well-fed and actively hunted prey, challenging popular theories on megafaunal extinction.
A new analysis suggests that saber-toothed cats and American lions didn't drastically change their diet near extinction due to scarcity. Instead, they likely consumed carcass bones regularly, contradicting the idea that food shortage was a main reason for their extinction.
Research suggests that cooler climates led to increased biodiversity in marine fauna, while warmer temperatures caused species to become extinct. The study's findings indicate that climate fluctuations played a significant role in the emergence and extinction of species.
Foxes are widespread in northern and eastern Tasmania, with a predicted spread that could lead to devastating consequences for the island's wildlife. The University of Canberra team used DNA detection techniques to map their distribution and recommend targeting all highly suitable fox habitats for eradication.
After 121 years, researchers have correctly identified the 'grave robber' fossil as a unique branch in the evolutionary tree. The discovery pushes back the endpoint for the fossil's lineage by 45 million years and shows that this family of mammals survived the extinction event that marked the end of the Age of Dinosaurs.
Researchers found that global warming prevented plant and animal species from fully recovering from the largest mass extinction in Earth's history. The study, led by Ohio State University doctoral student Alexa Sedlacek, suggests that life on Earth today may face similar problems in trying to recover from current climate change.
Researchers found that pre-Cretaceous ecosystem changes and environmental factors led to more fragile communities in late Cretaceous North America. The study's findings suggest that human-made changes to modern ecosystems could worsen their ability to withstand disturbances, emphasizing the importance of understanding ecological function.
A new study of marine fossils reveals that ocean animals with small geographic ranges are more likely to go extinct, even when populations are large. The research found that habitat breadth played a secondary role in extinction risk, and population size had little effect.
Scientists discovered extreme temperatures in the tropics during the end-Permian mass extinction, lasting five million years. The lengthy devastation was caused by a temperature rise of 50-60°C on land and 40°C at sea-surface.
Researchers from the University of Wisconsin-Milwaukee have identified a critical brain receptor that regulates extinction learning, which helps addicts stop drug use. By stimulating this receptor, drugs or molecular pathways could boost the effectiveness of exposure therapies and reduce craving and relapse.
A new research project led by associate professor David Nogués-Bravo will test historical data on species extinction to improve prediction methods for climate change. The study aims to protect threatened species and inform decisions to prevent extinctions.
The IUCN World Conservation Congress has adopted a motion to create a Green List for Species, which will include species identified as 'fully conserved', thriving in ecologically significant numbers. The list aims to emphasize that conservation is about more than just preventing extinction and highlight successful species conservation.
A new study published in the Proceedings of the National Academy of Sciences found that adolescents' brains have impaired fear extinction learning, making it difficult for them to overcome fear. This may explain why anxiety and depression rates surge during adolescence.
A new report by the Zoological Society of London identifies 100 of the most threatened animals, plants, and fungi on the planet, highlighting their unique value to nature. The report emphasizes that all species have a right to exist and should be protected, regardless of their perceived utility for humans.
Scientists discovered two closely timed extinctions, one triggered by massive volcanic eruptions and another by an asteroid impact. The eruptions, which occurred 300,000 to 200,000 years before the asteroid hit, warmed the planet and killed marine life.
Research found that Tasmanian devils with fewer bites are more likely to develop Devil Facial Tumour Disease (DFTD), a fatal infectious cancer. The study suggests that boosting natural selection of less aggressive devils could help reduce the spread of the disease and save the species from extinction.
A team of marine scientists warns that life in the world's oceans is facing a major shock due to human activities. The researchers have compared past extinctions with current trends, finding that global warming, acidification, and pollution are driving mass extinctions today, similar to those that occurred 500 million years ago.
The NYBG has developed a streamlined method for evaluating the conservation status of large numbers of plant species using Geographic Information Systems technology. This approach identifies which plant species are widespread in a region and those with restricted ranges, making them more susceptible to extinction.
A recent study published in Functional Ecology forecasts that tropical cold-blooded organisms are less likely to go extinct due to climate change. The researchers found that the 'hotter is better' theory suggests species adapted to warmer environments may evolve faster and be more resilient.
A study by University of Exeter researchers found that the demise of one carnivore species can indirectly cause another to become extinct due to ripple effects on a food web. This supports growing evidence against 'single species' conservation approaches, favoring instead ecosystem-centric strategies.
According to a study by Noel M. Burkhead, North American freshwater fish extinctions have increased noticeably after 1950, with at least 57 species and subspecies going extinct since 1898. The rate of extinction is estimated to be at least 877 times the background extinction rate over geological time.
Climate change, pollution, and invasive species are driving mortality in amphibians due to infectious disease, leading to extinctions rates 200 times higher than background extinction rates. Understanding these complex forces is crucial for addressing amphibian declines and emerging infections in humans.
A new study suggests that mass extinctions permanently alter the pace of evolution, with species diversification rates shifting after catastrophes. Researchers analyzed bivalve mollusks and found that origination rates increased or decreased suddenly at mass extinction events, reflecting a permanent change in evolutionary speed.
Research suggests that top predators play a crucial role in extinction risk, as they can amplify the effects of climate change on other species. Studying these biotic multipliers and their interactions with other species is essential to improve predictions of climate change impacts.
Scientists have found that woolly mammoths' extinction was caused by a combination of climate warming and habitat change, with human-induced climate change mirroring the same pressures. The researchers used radiocarbon dating to create detailed maps of changes in plant species, forest development, and human settlements over time.
The end-Permian crisis, the most dramatic biological crisis in Earth's history, lasted for around 10 million years to fully recover. Life recovered slowly due to intense environmental shocks and grim conditions on Earth.
Research on lemur extinctions over 2,000 years reveals that remaining species go into 'ecological retreat,' increasing extinction risk. Surviving lemurs rely on denser habitats due to vacant environmental niches, which may be a result of human disturbance.
An international team of scientists assesses 163 grouper species and finds 20 at risk of extinction, while 22 are Near Threatened. Groupers take years to mature and are vulnerable to overfishing and habitat loss.
A University of Georgia study analyzed over 46,000 fossils from 52 sites, revealing that abundant species did not necessarily persist longer than less abundant ones outside of the Ordovician extinction event. Instead, rarer genera were more likely to be present longer in the fossil record.
A study found that large-bodied herbivores declined in biodiversity over the last 12 million years of the Cretaceous period. In contrast, carnivorous dinosaurs and smaller plant-eaters remained relatively stable or increased in diversity. The researchers used morphological disparity to analyze dinosaur groups and found that certain spe...
A recent study has identified 24 new species of skinks, a type of lizard, on Caribbean islands. The newly discovered species are threatened with extinction due to the introduction of invasive mongooses that have been responsible for their decline.
A team of international scientists has confirmed that the extinct Tasmanian Tiger had limited genetic diversity prior to its extinction. The study reveals that the thylacine's genetic health may have been affected by geographic isolation from mainland Australia approximately 10-13 thousand years ago.
Scientists sequenced the Tasmanian tiger genome, revealing extremely low genetic variability due to geographical isolation. This limited genetic makeup makes the species highly susceptible to diseases and extinction.
Biologists at the University of Toronto found that individuals with low-quality genes can produce offspring with even more inferior chromosomes, possibly leading to extinction. The study suggests that this could result in a 'mutational meltdown' that devastates endangered populations and increases health problems.
A new study links the end-Ordovician mass extinction to nutrient-driven anoxia in the global ocean. The research overthrows century-old knowledge on why marine animals faced their first major challenges, highlighting the tight coupling between life evolution and oxygen dynamics.
A Caltech-led team used a framework to analyze fossil occurrences and sedimentary rock records to determine that habitat loss due to falling sea levels and cooling of tropical oceans were the primary causes of the Late Ordovician mass extinction. The study largely ruled out a hypothesis suggesting a record bias as an explanation for th...
Researchers from the University of Adelaide have discovered that pollen diversity is limited in mahogany forests due to extensive exploitation, affecting seedling growth and forest re-growth rates. The study suggests that collecting high-quality seeds from healthy trees could improve restoration efforts.
Mathematical modelling and simulation reveal that extreme species-rich ecosystems are most vulnerable to cascading extinctions in an increasingly variable world. This finding contradicts previous studies suggesting that species-rich ecosystems are more robust.
A newly discovered fossil species of scops owl found in Madeira reveals that its extinction was linked to human arrival and habitat destruction. The findings suggest that human introduction led to disease transmission, invasive species, and habitat loss, contributing to the bird's demise.
Multituberculates, rodent-like creatures, developed complex back teeth for crushing plant material, allowing them to thrive after dinosaur extinction, while sharper front teeth became less prominent.
Researchers analyzed Caribbean coral extinctions during Plio-Pleistocene era and found strong relationships between past regional extinction events and modern coral vulnerability. The study suggests that extinction events depend on biological characteristics of the coral species, improving the accuracy of extinction-risk assessment.
A study of ancient graptoloid populations found that they did not rapidly develop new physical traits after a mass extinction event. Instead, the researchers suggest an evolutionary lag occurred, with limited morphological innovation continuing for approximately 2 million years.
A new study reveals that the deadliest mass extinction, 'The Great Dying', was not a sudden event but occurred gradually. The researchers found evidence of gradual decline in marine life, with some species dying up to 100,000 years before the main extinction event.
A recent study published in the Geological Society of America Bulletin suggests that Earth's largest mass extinction, known as 'The Great Dying,' occurred over hundreds of thousands of years, not suddenly. The research, led by Thomas Algeo from the University of Cincinnati, found evidence of a prolonged die-off of marine life due to ma...
Researchers examine the link between climate warming and mass extinctions, revealing a direct consequence of Siberian trap volcanism. They also document land-based magnetic lineations similar to those found in sea-floor spreading centers and provide evidence for river drainage system rearrangement linked to ancient civilizations.
The Siberian Traps volcanic eruptions could have released gases that damaged the ozone layer and caused acid rain, leading to a drastic decline in ecological diversity.
Researchers have discovered that massive volcanic eruptions in the late Permian period likely caused the extinction of nearly all marine species and a majority of land life. Mercury levels were found to be significantly higher than today's human-caused emissions, contributing to the loss of 95% of life in the sea.
A new study found that vertebrate evolution exhibits 'head-first' diversity, where head features diversified before body shapes and types around extinction events. This discovery contradicts previous models of adaptive radiations, suggesting feeding-related pressures are the initial drivers of diversification.
A species of ancient predator, varanopid 'pelycosaur', survived a major extinction event in the Permian Period. Varanopids had sleek bodies, saw-like teeth, and a diet consisting of over 70% meat, contributing to their long survival.
A team of researchers determined the mass extinction event that wiped out 95% of marine life and 70% of terrestrial life occurred approximately 252.28 million years ago, lasting less than 200,000 years.
Researchers from Princeton University reject the prevailing theory that a single large meteorite caused the mass extinction event at the end of the Cretaceous period. Instead, they link the extinction to massive volcanic eruptions in western India known as the Deccan Traps, which were 3 times larger than France.
Researchers developed a new model that considers colonization and extinction rates at both breeding and non-breeding sites for migratory species. This approach can help conservators better understand the population dynamics of species like piping plovers.
A new mathematical model simulates the effect of climate change on plant-pollinator relationships. In some cases, evolution can rescue mutually dependent species from extinction, but density and distribution of other species play a crucial role in their survival.
According to a new article, psychologists recommend making treatment memories stronger through methods like giving more therapy or conducting it in different locations. This approach exploits established principles of learning and has been shown to be effective in reducing relapse rates.
A recent study reveals that neither human activity nor climate change alone caused the Ice Age megafauna extinctions. However, the research suggests that a combination of factors, including humans and climate change, contributed to the loss of large mammal species in Eurasia and North America.
A new study using genetic, archeological, and climatic data found that humans and climate fluctuations contributed to the extinction of six large Ice-Age mammals. The research suggests that as the Earth warmed after the last ice age, these species were unable to find alternative habitats, leading to their demise.
A study published in Proceedings of the Royal Society B found that land-based vertebrates suffered massive extinctions, with approximately 78% of genera perishing. The survivors formed 'disaster taxa' that dominated their ecological niches, leading to boom-and-bust cycles and instability in ecosystems.
Researchers from Arizona State University developed a new geochemical technique to study the Earth's largest mass extinction event. The study found that the period of oceanic anoxia was much shorter than previously estimated, occurring at most tens of thousands of years before the extinction event.