Articles tagged with Tropical Forests
New research suggests that young tropical forests may not be effective in conserving tree species due to low reproductive rates. The study found that even 30-year-old forests have a limited number of reproductive trees essential for long-term species survival.
VTT has developed a new method to accurately assess tropical forest cover using numerical satellite images. This method enables forest mapping with high accuracy and is being used in the EU's ReCover project in several tropical regions.
A new study reveals that carbon storage in re-growing tropical forests recovers faster than plant biodiversity following major disturbances. Despite this, even after 80 years, these forests tend to have less carbon than old-growth forests due to the dominance of small, fast-growing trees.
Researchers at the Smithsonian Tropical Research Institute found that tropical trees can
A study published in PLOS ONE found that more than 80% of tropical forests in Malaysian Borneo have been heavily impacted by logging. Satellite imaging revealed approximately 226,000 miles of roads constructed throughout the forests of this region.
A recent study by Florida State University researcher Stephanie Pau found that tropical forests produce more flowers in response to only slight increases in temperature. This is the first study to combine long-term flower production data with direct estimates of cloud cover based on satellite information.
A new study by UC Santa Barbara's NCEAS found that tropical forests are sensitive to small changes in temperature, producing more flowers. The study analyzed global data and satellite information, indicating that clouds mainly affect short-term growth, while longer-term changes are due to temperature.
Scientists at the Smithsonian Tropical Research Institute reviewed 6,000 measurements of ancient temperatures to understand the past impact of global warming on rainforests. They found that diversity increased during hothouse conditions, but surprisingly, rainforests never extended beyond the modern tropical belt.
A Dartmouth College study suggests that many species of tropical lizards may not be on the brink of extinction due to climate change. The research found that high-resolution temperature measurements revealed varying effects on different lizard populations, contradicting previous predictions of widespread extinction.
A recent study published in Nature Geoscience suggests that tropical forests are less likely to lose biomass in response to greenhouse gas emissions. This finding has important implications for the future evolution of tropical rainforests and their role in the global climate system.
A study by University of Exeter researchers reveals tropical forests' sensitivity to climate change, with significant carbon release expected if climate models are inaccurate. The team found a correlation between year-to-year variations in carbon dioxide concentration and long-term changes in tropical forest carbon storage.
Madidi National Park has been documented to have an incredible array of species, including 1,088 bird species and over 200 mammal species. Despite this wealth of biodiversity, much remains unknown about the park's tropical montane forests.
A group of Pyrgodesmidae millipedes previously unknown in Australia has been discovered on museum shelves. The study reveals dozens of native species across over 2000 km of eastern Australia's warm forests.
New research reveals that tropical forest fragments are nearly emptied of wildlife, with many species like jaguars and lowland tapirs virtually extinct. The study emphasizes the importance of strictly protected areas to conserve biodiversity in these ecosystems.
A recent study published in Nature found that many tropical protected areas are struggling to sustain their biodiversity, despite being our best hope for preserving tropical forests. However, the research also highlights the importance of eliminating threats outside park boundaries and maintaining existing parks.
A new study by William Laurance and co-authors finds that nearly half of tropical forest reserves are ineffective in protecting biodiversity. Well-protected reserves also show signs of decline, highlighting the need for improved conservation efforts to safeguard these critical ecosystems.
Researchers used LiDAR and satellite image analysis to create detailed maps of the Colombian Amazon's carbon stores, unlocking new methods for monitoring and conserving the region. The breakthrough supports the UN's REDD+ program and has implications for climate change mitigation in Colombia.
A recent study published in Nature highlights the challenges facing tropical protected areas, but also shows that long-term engagement with conservation can have positive results. Conservation efforts in Tanzania's Udzungwa mountains have paid dividends, with the reserve remaining relatively unchanged from a biodiversity point of view.
A new University of Florida study suggests that selective logging of tropical forests can be a viable conservation option, as long as the forest is given adequate time to recover. The research found that biodiversity and carbon retention take a hit from logging but can be reversed over time.
Scientists have measured the carbon content of Sri Lanka's natural forests, finding that nearly half of greenhouse gas emissions originate from deforestation. The study suggests alternative ecosystems can bind carbon while providing food and protection for local populations.
Researchers found that molybdenum, not phosphorus, is the limiting nutrient for nitrogen-fixing bacteria in tropical forests. The discovery could have widespread implications for understanding how tropical forests respond to climate change and regulate the Earth's climate system.
A team of scientists has discovered that high levels of nitrogen in tropical forests are caused by natural interactions between the forest and nutrient cycles. The study found evidence of large losses of bioavailable nitrogen from plant-soil interactions, not directly from atmospheric deposition.
Scientists have discovered that human activities are perturbing the nitrogen cycle in tropical forests, leading to an increase in nitrogen levels. This finding has significant implications for tree communities and global change models.
A recent study published in Science found that tropical forests' variability is attributed to historical and geological processes rather than current ecology. The research team collected data at sites worldwide, revealing similarities in biodiversity patterns between tropical rainforests and temperate regions.
A comprehensive assessment of tropical forests found primary forests sustain the highest levels of biodiversity and are vital to many species. Human activities like logging and agricultural expansion have transformed most remaining primary forests, leaving little unaltered.
A new study reveals that enhanced tree growth in tropical forests can stimulate soil micro-organisms, leading to the release of stored soil carbon. Researchers found that extra litterfall triggers a process called priming, which stimulates the decomposition of carbon stored in the soil.
A new study claims that species extinction rates have been overreported by as much as 160%, using widely used methods. However, the global extinction crisis is still very real, according to researchers. The study's findings suggest that habitat loss is not as dire as previously thought, but conservation efforts are still necessary.
Scientists at the Smithsonian Tropical Research Institute offer new insights on reforestation in Latin America, highlighting the importance of native species, carbon storage, and biodiversity conservation. The research provides a framework for land managers to weigh environmental and economic factors in their decision-making.
A project called Tropi-Dry, led by the University of Alberta, used remote sensing and geo-data to overturn a Brazilian law that would have allowed widespread logging. The decision protects critical ecosystem services, including weather regulation and water production.
A new study finds that biodiversity can be conserved while resources are used to support local household livelihoods, especially when managed under systems that involve local forest users. The research suggests formalizing the rights of local people to contribute to forest management and governance can promote dual success.
Lianas, found in most tropical lowland forests, are outcompeting trees for sunlight, water, and nutrients. This intense competition is limiting tree growth and survival in these ecosystems.
Research finds vines are outcompeting trees in tropical forests across the Americas, posing a threat to biodiversity and ecosystem services. This shift has significant implications for climate models, business models relying on tree growth data, and human communities dependent on these forests.
A giant-scale ecological study, SAFE Project, aims to understand how deforestation and forest fragmentation impact biodiversity and carbon cycling in tropical Asia. Scientists will investigate the impact of agricultural development on the ecosystem's ability to absorb carbon dioxide.
The research team aims to create hybrid ecosystems with a mix of native and non-native species, optimizing carbon storage and supporting native biodiversity. The project will begin in April 2011 and be conducted over five years, focusing on finding ways to co-exist with invasive species.
Researchers found that tropical rainforest diversity increased rapidly during a 56.3 million year-old global warming event, with new plant species emerging at an accelerated rate. Despite expected devastation, forest ecosystems fared surprisingly well under the warmer conditions.
A new study finds that crop productivity improvements and carbon emission limits can work together to prevent tropical deforestation over the next 100 years. The research suggests that increasing crop yields while implementing economic incentives to store carbon in forests can help preserve tropical forests and even increase their extent.
The study found that over 80% of new farmland created in the tropics between 1980 and 2000 came from felling forests, with significant implications for global warming. The research suggests that the rate of deforestation may be slowing, but the demand for agricultural production is expected to continue growing.
Scientists have created the most comprehensive map of the Earth's mangrove forest distribution, revealing a 12.3% decline in forest coverage compared to earlier estimates. The map shows that approximately 75% of remaining forests are found in just 15 countries, with only ~6.9% protected under existing networks.
A new study projects that only 18% to 45% of plants and animals in global tropical forests may remain as we know them today by 2100. Conservation efforts can focus on reducing deforestation pressure to help species adapt to climate change or enhance their ability to move with it.
Scientists tracked 17 iridescent orchid bees using radio transmitters, finding that males spent most of their time in small core areas but could visit farther afield. These long-distance movements help explain why some orchids are rare despite being pollinated by these bees.
The HSBC Climate Partnership has made significant progress in understanding the effects of climate change on forest ecosystems and carbon storage. Researchers have found rapid increases in tree growth, proposed a novel biodiversity theory, and examined the impact of changing climate on white-tailed deer and mosquitoes.
Researchers Ivette Perfecto and John Vandermeer argue that small family farms in tropical regions can provide a better way to meet both food production and biodiversity preservation goals. They propose an alternative model, the matrix quality model, which enables plants and animals to migrate between remaining forest fragments.
Helene Muller-Landau's tolerance-fecundity model reveals why different species make strikingly different reproductive choices. The model suggests that varying levels of stress favor different strategies.
Researchers compiled database of 1.1 million grass species and found 18 out of 21 transition nodes between C3 and C4 grasses were linked to changes in precipitation. This discovery challenges previous understanding that warmer temperatures were the primary driver of C4 grasses' evolution.
A new software package called CLASlite is revolutionizing forest monitoring by automatically identifying deforestation and forest degradation from satellite imagery. The technology has been adopted by 70 organizations in five countries and is being rapidly disseminated to support international policy discussions.
A new pan-tropical forest mapping initiative, launched at COP15, aims to provide accurate data on forest cover and carbon stocks. The project combines satellite and lidar data from NASA and JAXA, enabling countries to build robust national carbon accounting systems.
A new strategy proposes a biodiversity-focused approach to reduce carbon emissions from deforestation, favoring high-biodiversity nations in Southeast Asia and the Indian Ocean. This approach has been shown to contribute more to slowing biodiversity loss than traditional carbon-based credit scenarios.
A team of researchers led by Dr Thorsten Wiegand and funded by the European Research Council (ERC) is investigating the composition and dynamics of species-rich communities. They will use advanced methods to understand the factors and processes governing biodiversity, utilizing extensive data sets from tropical forests.
Researchers studied orangutan movement to understand how they adapt to challenging environments. Orangutans move with an irregular rhythm, allowing them to cope with tree vibrations and forage safely.
A new study reveals that biofuels could hasten climate change due to the destruction of tropical rainforests. The study found that it will take over 75 years for carbon emissions saved through biofuel use to compensate for the carbon lost when these forests are converted into plantations.
Oil palm expansion in the Brazilian Amazon is likely to occur at the expense of natural forest, according to William F. Laurance and Rhett A. Butler. The proposed revision to Brazil's forest code would allow up to 30% of reserved forests to consist of oil palm plantations.
A team of scientists led by Dolores Piperno has discovered the earliest evidence of maize domestication in the New World, dating back to 8,700 years ago. The research confirms that maize originated from a wild plant called teosinte and was first domesticated in tropical southwest Mexico.
Research finds that tropical forest lizards are less tolerant of high temperatures than their relatives at higher latitudes. A temperature change of just a few degrees can significantly reduce their physical performance, making them more vulnerable to extinction. The study's lead author warns that the same concerns apply to other ectot...
Researchers discovered that African forests are increasing in tree carbon stocks by an amount equal to the weight of a small car each year. This suggests that extra carbon dioxide in the atmosphere could be acting as fertilizer, but other factors like human occupation and past disturbance may also be at play.
Researchers found that tropical trees in undisturbed forests absorb 4.8 billion tonnes of CO2 emissions annually, including an unknown carbon sink in Africa. This massive carbon sink has significant implications for climate change, with the potential to buffer global warming by substantially reducing atmospheric CO2 levels.
The IPCC Fifth Assessment will incorporate new studies predicting more severe changes than previous assessments. Tropical forests could become carbon sources due to wildfires and warming temperatures.
Laurance and Lovejoy received the award for their contributions to understanding habitat fragmentation and global change impacts on tropical forests. Their work promotes conservation research in imperiled forests, inspiring decision-makers and the public to establish and conserve large, interconnected forest reserves vital to ecologica...
A new study uses airborne technology to track changes in Big Island tropical forests, revealing how climate and invasive species affect carbon stocks. The research finds that fast-growing invaders decrease biomass levels, while slower-growing species increase biomass stocks.
Scientists estimate that roughly 1.4% of tropical humid forests were deforested between 2000 and 2005, with more than half containing 50% or less tree cover. New remote-sensing technologies are required to monitor the changes caused by selective logging and forest regeneration.
The Carnegie Institution's Department of Global Ecology has received a $1.6-million grant to improve and expand CLASLite, a user-friendly method for mapping tropical forests from desktops. The technology will help rainforest nations monitor their changing carbon budgets and advance deforestation and degradation mapping in Latin America.