Articles tagged with Tropical Forests
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A new study in Systematic Entomology reveals that evasive butterfly mimicry in the genus Adelpha may be a rare and overlooked type of mimicry. The researchers found that Adelpha butterflies use speed and unpredictability as a defense mechanism, making them difficult to catch for birds and other predators.
A new study reveals that tropical forests can regrow up to 95% faster when given sufficient nitrogen, allowing them to absorb more carbon dioxide. This finding suggests that targeting nitrogen pollution from farms and factories may be crucial in helping young forests recover and act as natural climate solutions.
Researchers from UNICAMP found that bromeliad water fertilizes the soil beneath branches, facilitating growth of plants with high nutritional demands. This process, known as remote plant interaction, occurs between physically distant organisms and enhances functional diversity in the system.
Researchers at Colorado State University found that some tropical forest plants are adapting to drought by growing longer root systems, potentially helping reduce vulnerability. The study's findings suggest flexibility under drying conditions may rescue the forest, but long-term implications remain uncertain.
Researchers found a robust and healthy population of critically endangered Sumatran tigers in the Leuser ecosystem, with over 282 high-quality images captured. The team identified 27 individuals, including females with high densities indicating a thriving social system and adequate habitats.
A recent study found that rainfall and temperature significantly impact the water volume in bromeliad tanks, which in turn affects mosquito development and species diversity. This knowledge can be useful for predicting malaria transmission risk and estimating the effects of climate change on disease outbreaks.
A new study reveals that human disturbances, such as logging and wildfires, are profoundly impacting the Amazon rainforest's ecological functions and evolutionary history. The researchers found that even sustainable management practices, like selective logging, have significant negative impacts on tree diversity.
The study used network theory to analyze ecological connectivity of 28 areas in the northwest of São Paulo, Brazil. The research found that restored areas lack diversity, with low connectivity values and no nesting pattern.
Researchers found that elevated CO2 levels can cause leaf temperatures to rise by up to 1.3°C in forests, with a greater impact during extreme heatwaves. This change is likely caused by reduced transpiration and could have significant effects on the water cycle globally.
Two muriqui species, largest primates in the Americas, face significant habitat loss due to climate change. By 2090, up to 61% of their suitable habitats may be reduced, mainly confined to coastal regions of the Atlantic Forest.
A new study suggests that Amazon forest trees have increased in size by an average of 3.2% every decade over the past few decades. The research found that both large and smaller trees have benefited from increased atmospheric carbon dioxide, leading to a significant increase in tree size.
Analysis found that Indigenous Territories with high forest cover can decrease disease rates, including malaria and pneumonia. Legal protection is key to maintaining this effect.
A new study projects the start of Amazon dieback as early as the 21st century under high-emission scenarios, triggered by extreme conditions and global warming levels above 1.5°C. The Amazon's natural water recycling system is weakened, leading to hotter and drier conditions that can no longer sustain dense vegetation.
The decline of seed-dispersing animals, including birds and mammals, hinders the fight against climate change by altering forest composition and reducing carbon absorption. Researchers warn that major global efforts underestimate the importance of frugivores in conservation and restoration strategies.
Researchers conducted the world's biggest bird survey in Colombia, recording 971 species and finding that clearing rainforest for cattle pasture causes a 60% greater biodiversity loss than previously thought. The study highlights the need for policymakers to consider the larger-scale impact of deforestation on biodiversity.
Researchers have identified a new genus of frog, Dryadobates, comprising at least 12 species, with three already declared extinct. The study utilized historical DNA analysis to clarify the taxonomic classification of previously single-species frogs, revealing hidden diversity and extinctions in the Atlantic Forest.
A new study reveals that thunderstorms are a major cause of tree death in tropical forests, explaining patterns of mortality and carbon storage. The research highlights the growing threat of storms to trees and the planet's carbon stores.
A new study suggests that termites can be slow to recover in regenerating forests, hindering growth and health. Scientists propose transplanting deadwood logs or termite mounds into replanted rainforests to boost decomposer abundance and diversity.
New research warns that global policies may lead to triggering of multiple climate tipping points, with a 62% risk on average. However, sustainable future pathways with lower greenhouse gas emissions can significantly reduce this risk.
A recent study reveals that tropical forests are home to an incredible diversity of chemical compounds, including terpenoids and alkaloids, which could have practical implications for human health. The researchers found that tree species in higher elevations tend to use similar chemicals to protect themselves from enemies.
A team of HKU ecologists led an international initiative to study declining tropical insect populations, highlighting alarmingly limited knowledge and threats from urbanization, habitat loss, and climate change. The review emphasizes the need for more research and conservation interventions to maintain tropical biodiversity.
A major new study reveals that tropical forests across the Americas are not adapting quickly enough to climate change. The study found that tree communities are responding too slowly to shifting temperatures and rainfall patterns, making them more vulnerable to extreme climate events.
A study led by Evan Gora found that Dipteryx oleifera trees can survive direct lightning strikes with minor damage, while other trees are badly damaged. The researchers discovered that these trees tend to have fewer lianas and are more likely to gain an advantage in competing for light and space after being struck by lightning.
A new study reveals that tropical forests in the Americas are not adapting quickly enough to keep pace with climate change, with some species thriving while others struggling. The research found that traits such as being deciduous and drought tolerance influence a tree's ability to survive in a changing climate.
Researchers analyzed satellite data from the Sentinel-2 satellites to predict variations in tree traits and map functional diversity. They found significant differences in forest function across continents, with American tropical forests showing greater functional richness than African and Asian forests.
Researchers propose a new biological hypothesis that combines tree dispersal modes and mycorrhizal types to explain the latitudinal variation in forest biodiversity. Advanced spatial analysis techniques reveal a negative aggregation–abundance relationship, stronger in temperate forests, which is linked to animal seed dispersal and myco...
Researchers discovered a novel spatial mechanism underlying the coexistence of tree species in forests, with mechanisms such as seed dispersal driving patterns in tropical forests and mycorrhizal fungi shaping patterns in temperate forests. This finding has implications for understanding biodiversity stability and species coexistence.
A recent study published in PLOS Biology found that even within protected habitats, tropical species are still vulnerable to threats from beyond their borders. Human population density and habitat disturbance in surrounding areas can lead to a decline in species richness by up to 1% per 16 persons per square kilometer.
The study highlights the importance of semi-dry forests in Nui Chua NP, which have the highest diversity and occupancy of the silver-backed chevrotain. Conservation efforts should prioritize these transitional habitats to protect this flagship species.
A 40-year study reveals increasingly common and devastating megadroughts worldwide, with significant impacts on ecosystems and agriculture. The research used global meteorological data to track changes in drought patterns and their effects on vegetation, providing insights into the paradoxical responses of different forest types.
A comprehensive assessment of logging and conversion to oil palm plantations reveals that these activities have significantly different and cumulative environmental impacts. Logging mostly affects forest structure, while converting logged forests to plantations has greater impacts on biodiversity.
A new study reveals that nutrient enrichment driven by agriculture and fossil fuel combustion poses a significant risk to tropical forest dynamics. This phenomenon can disrupt forest composition and resilience, particularly in the face of global climate change.
Botanists from Oxford University and University of the Philippines Los Baños have named a new species of 'lipstick vine' found in the Philippine rainforest, characterized by delicate purple mottling. The discovery is significant as it highlights the importance of conservation efforts to protect the region's biodiversity.
Fast-growing tree species are dominating Brazilian forests in regions with high levels of deforestation, threatening ecosystem services and biodiversity. The study highlights the urgent need to conserve and restore tropical forests to preserve these vital ecosystems.
A new study reveals that less than a quarter of the world's tropical rainforests have sufficient quality to support thousands of threatened species. The research highlights the urgent need for conservation strategies that prioritize forest integrity over mere preservation of cover.
Coconut palms now cover over half of Pacific atolls' total forested area and 24.1% of their total land area. The widespread conversion to coconut monocrops has been linked to groundwater depletion, declining seabird populations, and adverse impacts on coral reefs.
A recent study published in Nature found that isoprene, a naturally occurring organic compound emitted by vegetation, significantly contributes to the formation of new particles in the upper troposphere. Isoprene oxygenated organic molecules can rapidly form new particles under certain conditions.
A recent study published in Nature Sustainability analyzed global forest disturbance patterns from 2002 to 2014, identifying four main types of patches and mapping their distribution across different biomes. Human activities tend to leave similar patterns globally, with potential implications for forest resilience.
Research by Göttingen University and collaborators reveals that tree islands within oil palm monocultures can naturally regenerate native tree diversity through ecological restoration. Larger island areas are particularly essential for endemic tree species struggling to find habitats.
Researchers found that mangrove forests in the Maldives have lost over half of their cover since 2020 due to rising sea levels and climate change. The findings indicate that the Indian Ocean Dipole and accelerated sea level rise led to dieback, causing the trees to drown.
A global study published in Nature reveals that over 215 million hectares of tropical forests can support natural regeneration, sequestering 23.4 gigatonnes of carbon over 30 years. The identified area spans across five countries, including Brazil, Indonesia, China, Mexico, and Colombia, highlighting the need for targeted restoration e...
A new study predicts that climate change will threaten the survival of up to 2,000 resident bird species in the Neotropics by 2100. However, a more optimistic future scenario suggests that only 90 bird species will be exposed to longer dry seasons.
Forest fires globally emitted half a billion tonnes more CO2 in the last two decades, with increased severity and extent driven by climate change. The study reveals alarming shifts in forest fire patterns, posing significant challenges for global targets to combat climate change.
The Smithsonian Tropical Research Institute will use the grant to apply a free, definitive standard for quantification of forest carbon everywhere. The project aims to provide accurate estimates of carbon storage and change in forests globally, enabling countries, companies, and landowners to offset their emissions.
A recent study found that two-thirds of Key Biodiversity Areas (KBAs) in tropical forests are experiencing new temperature conditions. KBAs identify critical habitats for species and their ecosystems. The researchers assessed 30 years of temperature data below the forest canopy, revealing that 66% of KBAs have transitioned to new
A new study finds that future climate change may reduce the Amazon's ability to act as a carbon sink by making it drier and hotter. The Amazon rainforest's carbon storage capacity is threatened by increased frequency and severity of droughts and heat extremes.
Researchers at Binghamton University discovered that water anoles produce a special bubble over their nostrils to breathe underwater and evade predators. The study found that the bubble serves a functional role in respiration, allowing lizards to stay submerged for longer periods.
Researchers found that regrowing tropical forests on pastureland can reduce soil carbon emissions by nearly two-fold, offering a quick win in the fight against climate change. This unexpected finding is attributed to warmer temperatures experienced by soils in pastureland, which may explain higher carbon dioxide emissions.
A new study from the University of Leicester found that trees in logged tropical forests produce more carbon dioxide per unit area than those in unlogged forests. The researchers measured respiration in tree stems and estimated values for all trees in a one-hectare plot, showing higher carbon release levels in logged forests.
Research shows ozone gas reduces tropical forest growth by 5.1% on average, impacting carbon capture and global warming. This effect is stronger in some regions, including Asia's tropical forests, which lose 10.9% of new growth.
A new study published by US Forest Service researchers explores the impact of leaf-eating insects on forest ecosystems worldwide. The findings suggest that warmer climates affect plant-herbivore interactions, leading to changes in carbon and nutrient cycling in broadleaved forests globally.
Researchers found that forests with less than 29% biomass loss retain high biodiversity and ecological value. Above 68% removal, serious conservation is needed to maintain biodiversity.
The world's forests continue to absorb significant amounts of carbon dioxide, with an average of 3.5 billion metric tons per year, nearly half of global fossil fuel emissions between 1990 and 2019. Despite disruptions, certain land management practices can help preserve this critical carbon sink.
Researchers found that tropical tree communities exhibit higher levels of phytochemical diversity, leaf herbivory, and specialized herbivory compared to less diverse subtropical and subalpine forest communities. This study highlights the importance of biotic interactions in maintaining biodiversity in tropical regions.
The study reveals regional differences in Amazon drought response due to local environments and tree properties. The southern Amazon, with shallow water tables, is more vulnerable to drought, while the northern region, with deeper roots and less fertile soil, is more resilient.
A new study suggests that tropical forests can overcome the challenge of scarce nutrients by adjusting their strategies for acquiring phosphorus. Forests of different ages respond differently to nutrient additions, with younger forests investing in nitrogen-based strategies and older forests relying on phosphatase to access phosphorus.
Intensive wire snare removal efforts reduced snaring by almost 40% in protected areas of Viet Nam, according to an 11-year study. The effectiveness of snare removal was mainly achieved within the first 6 years, but its impact alone is unlikely to protect wildlife due to ongoing snaring threats.
International research team finds that increasing key nutrients like potassium and phosphorus can sustain tropical forest productivity under drought conditions. This study, published in Nature Geoscience, aims to address the potential impact of climate change on these critical ecosystems.
A new study by Emory University researchers found a link between deforestation and rabies outbreaks in cattle in Costa Rica. The study suggests that decreased availability of bat-roosting sites within forested habitat may increase the preference of vampire bats to feed on cattle.
A study by the University of Göttingen investigated regional differences in bird diversity within cocoa agroforestry systems in Peru. The research team found that biodiversity decreases with increasing distance from natural forests, with greater richness of species found in humid subtropical forests than in dry tropical forests.