Articles tagged with Wetlands
Researchers developed an innovative algorithm to track alpine wetland degradation using Landsat time series data. The AI-powered approach improves mapping accuracy and captures subtle surface changes.
A new study found that 34% of the Arctic-boreal zone is now a source of carbon, with fires and microbial activity contributing to emissions. The research provides a comprehensive assessment of carbon fluxes in the region, highlighting the importance of monitoring these processes.
Long-term drainage increases bound OC% in non-Sphagnum wetlands due to reactive metal oxides, but decreases it in Sphagnum wetlands. This mechanism helps compensate for lost unbound SOC components in non-Sphagnum wetlands.
A global study using teabags to measure carbon release from soil in wetlands found that warmer temperatures led to increased decay of organic matter, reducing carbon preservation. Freshwater and tidal marshes showed the highest potential for carbon storage.
A new UBC-led study reveals that preserving key natural ecosystems across Canada can significantly reduce rainwater runoff and protect homes and livelihoods. The research identifies 201,000 square kilometres of watersheds as critical for flood prevention, supporting wildlife while reducing reliance on costly infrastructure.
Researchers confirm oil presence in Mauritius mangrove forest close to Ramsar conservation sites, three years after MV Wakashio spill. The oil has undergone weathering and biodegradation, but its ongoing presence poses an unknown risk to the sensitive ecosystem.
A large-scale pre-Columbian fish-trapping facility was discovered in the Crooked Tree Wildlife Sanctuary in Belize, dating back to the Late Archaic period around 2000-1900 BCE. The facility, which included a network of linear channels and ponds, would have yielded enough fish to feed up to 15,000 people year-round.
A new study from North Carolina State University and the USGS uses satellite imagery to identify coastal forests undergoing regime change due to sea-level rise. The research finds that these transitions can occur rapidly or slowly, and remote sensing of vegetation health can help predict EWS for some areas.
A new study from the University of Illinois looks at how wetlands are portrayed in film, suggesting they play specific roles in story development and reflect society's attitudes towards these ecosystems. The research team analyzed 163 films and found that wetlands were often depicted as perilous pathways and psychological barriers, but...
A new study applies modern portfolio theory to conserve the coquí llanero frog by diversifying investments and managing risk under future climate uncertainty. The analysis suggests that relying on existing protected areas may not be enough to mitigate climate risks, and investing in additional habitats could be worth the cost.
The Pantanal's soda lakes, characterized by high pH and salinity, have practically dried up due to rising temperatures and wildfires. The study found that certain types of lakes, such as eutrophic turbid lakes, emit methane due to cyanobacterial blooms and decomposing organic matter.
A new analysis reveals that increased inundation and water storage in wetlands drove the record surge in atmospheric methane emissions from 2020 to 2022. Wetland microbes produce methane as they metabolize organic matter anaerobically, leading to a significant increase in release to the atmosphere.
A study has identified key environmental factors affecting methane emissions in tidal wetlands, including salinity and temperature. The analysis allows for more precise estimates of greenhouse gas emissions in these ecosystems, essential for assessing climate implications.
A cutting-edge study revolutionizes coastal wetland mapping using unmanned aerial systems (UASs) integrated with light detection and ranging (LiDAR) and multispectral sensors. The approach provides detailed elevation data and vegetation analysis, enabling accurate classifications of diverse wetland types.
A new study has found that expanding rural areas around cities can cool down urban temperatures, with the largest effects seen in areas where the rural ring extends for at least half the city's diameter. The researchers recommend joining up patches of rural land and planting more woodland to mitigate urban over-heating.
A new study suggests that the Cahokia exodus may have been due to external pressures rather than crop failure, finding no evidence of widespread drought impact. Researchers believe the society had the engineering skills to maintain crops and a diverse diet, leading them to gradually disperse rather than abandon their land.
A new study by Virginia Tech researchers reveals that agricultural demand for water is significantly higher than cities, with crops used for feeding cattle being the largest consumers. The researchers also found that reservoir levels are dropping due to overuse and climate change, highlighting the need for efficient water use strategies.
A LSU study found that chronic relative sea level rise combined with short-term weather-related shocks, such as droughts and hurricanes, led to the decline of Phragmites-dominated stands in the marsh. The study suggests elevating marsh beds with sediment can improve resilience.
A comprehensive analysis of over 200 scientific articles reveals the fundamental importance of scavengers and carrion in wetlands, benefiting soil, plants, birds, and mammals. The study highlights five different functions performed by scavengers during carrion consumption, including nutrient recycling and pathogen control.
Restoring field-margin wetlands in the US is insufficient to reduce nitrogen pollution in the Gulf of Mexico. Existing conservation programs have failed to meet targets for nutrient reduction, necessitating additional strategies to address the issue.
A new study reveals that retention ponds and wetlands can significantly reduce the amount of tyre particles entering aquatic environments, with an average reduction of 75%. The research found that tyre wear particles outweigh other forms of microplastics, but are also removed in greater quantities.
Researchers found that old and young waters behave differently, with deep groundwater sustaining the hydrological system. Only 20-40% of surface water is contemporary, making it sensitive to climate change and mining activities.
A UK feasibility study suggests that a carbon credit scheme could support private investment in saltmarsh restoration, providing vital habitat for wildlife and addressing the climate crisis. The introduction of a Saltmarsh Code would pave the way for projects with public financing to contribute to restoration efforts.
A global study led by the University of Surrey reveals that green spaces like parks, wetlands, and botanical gardens can cool city air significantly during heatwaves. The study found that bigger parks have a greater cooling effect, and connecting green spaces into 'green corridors' can unlock greater benefits.
Researchers from Berkeley Lab found significant increases in wetland methane emissions in Arctic and Boreal ecosystems, with emissions rising by approximately nine percent since 2002. Temperature and plant productivity were identified as major drivers of these changes, highlighting the urgent need to quantify natural sources of methane.
Researchers found that tidal wetlands are not always less hospitable to methane-producing microbes as sea levels rise, with some sites emitting high levels of methane despite moderate saltwater influx. The study's results suggest complex factors governing methane emissions in natural landscapes, complicating predictions and models.
A new study published in Geophysical Research Letters sheds light on methane emissions from Arctic lakes and wetlands. Researchers found that small, unmapped lakes contribute only about 3% of the region's methane emissions, significantly reducing the cumulative amount previously thought to be emitted.
Researchers developed a detection method for infectious bird flu virus in wetlands frequented by waterfowl. The method successfully detected HPAI virus strains in four out of four wetland sites in April, but not from a lake, highlighting the need for improved RNA detection techniques.
Research reveals Eurasian otters in Hong Kong were once more widespread and common, but have declined drastically since the 1930s due to lowland wetlands destruction. The species' critical habitat, Deep Bay wetlands, is under threat from government-led mega development plans.
Re-wetting southern peatlands along the US south Atlantic coast could significantly boost carbon storage and reduce greenhouse gas emissions. A new Duke University study reveals that maintaining water levels between 20-30 cm below the local water table can increase CO2 storage by up to 90%.
A new study published in Nature warns that coastal wetlands and coral reef islands are unlikely to survive at current rates of sea-level rise exceeding 7 millimeters per year. The study suggests that global warming must be limited to less than 2 degrees Celsius for these ecosystems to have a chance.
A new UCF project aims to examine a method to keep carbon from escaping soils and trapping heat in Earth's atmosphere. Researchers will focus on histosols in the Everglades Agricultural Area, adding fine minerals to prevent carbon release.
New research from University of Southern Denmark warns that flooding low-lying areas with freshwater can lead to higher greenhouse gas emissions than using saltwater. Standing water is particularly problematic, as it allows methane-producing bacteria to thrive and emit significant amounts of methane into the atmosphere.
Researchers propose employing freshwater delivery techniques from inland wetlands to mitigate coastal salinification. Alternative water sources like treated effluent and stormwater may support riparian ecosystems in urban settings. Techniques can help restore function and resilience in the face of climate change.
Researchers found that boreal wetlands are a substantial source of isoprene and terpenes, contributing to the formation of secondary organic aerosol and ozone. The emissions from these wetlands exhibit a strong exponential temperature response, making them a significant concern in a warming climate.
Researchers from the University of South Florida and EPA developed a new classification system to target wetland restoration and protection. The system categorizes freshwater wetlands into four classes based on their proximity to streams, demonstrating the effects of wetlands on water quality at a continental scale.
A study from the University of East Anglia found that environmental impact assessments often fail to account for species movement between sites, leading to underestimated impacts on wildlife. The research highlights a planned airport development in Portugal that could affect over 10 times the number of Black-tailed Godwits estimated by...
A new study published in Nature Climate Change reveals that pristine wetlands are currently a greenhouse gas sink, but this function will be reduced by over half in response to a 1.5-2°C temperature increase. Warming promotes net methane and nitrous oxide emissions from these ecosystems, posing a positive feedback on global warming.
A study analyzing over 300,000 European vegetation plots found that global climate gradients have relatively weak correlations with local plant community characteristics. The effects of climate change on plant species depend heavily on local factors such as soil conditions and microclimate.
A new study reveals that whooper swans thrive in UK nature reserves, with survival rates significantly higher and population growth up to 6% annually. This could lead to a doubling of the species' wintering population in the UK by 2030.
A study by the University of Exeter found that flamingos form groups based on their individual personalities, with birds of similar traits spending more time together. This complex social behavior could help improve the welfare of captive flocks and provide insights into the evolution of bird societies.
Estuaries along the Atlantic coast and eastern Gulf of Mexico are expected to experience significant increases in nutrient loading, posing risks for harmful algal blooms and ecosystem health. The study identified regions with high adaptive capacity as having more resources to mitigate these effects.
Researchers argue that polders are an important part of China's water heritage, reflecting the country's long history of water management. Over 2,500 years, polders have evolved in response to changing societal needs, adapting to agricultural modernisation and urban encroachment.
A recent study published in Nature highlights the underestimation of global wetland loss over the past 300 years. The research found that temperate river floodplains and tropical regions are disproportionately affected, while remote boreal-arctic peatlands remain relatively unharmed.
The Stanford-led study found that the area of wetland ecosystems has declined 21-35% since 1700 due to human intervention, with at least 1.3 million square miles lost globally. This contradicts previous estimates and suggests a need for revised conservation strategies.
Researchers found that small, disconnected wetlands are twice as effective in catching pollutants like nitrogen and phosphorus. These isolated wetlands can protect lake or river ecosystems from pollution, improving water quality and biodiversity.
Australian scientists developed virtual models to reveal a crucial link between natural flooding and the extinction risk of endangered southern bell frogs. The study found that modern river regulation dramatically increases extinction risk in smaller wetlands.
A new AI deep learning model for mapping wetlands has been developed by Chesapeake Conservancy with 94% accuracy. The model uses freely available data to map high-resolution wetlands in the US, providing a cost-effective solution for natural resource managers and companies.
Researchers investigated hydrometeorological factors in alpine wetlands during warm and cold seasons. They found that depth of frozen soil averages 20-40 cm, with sensible heat flux greater before solar noon in the cold season. Temperature and longwave radiation are key control factors for heat exchange.
A recent LSU study found significant land formation in two freshwater diversions on the state's coastline, including a 2-4.8 sq km increase in area over 17 years. The Davis Pond Diversion showed a dynamic environment with dramatic change, while the Caernarvon Diversion had no meaningful detectable changes.
Researchers found that summer rainfall and autumn-winter dry days are increasing, leading to fluvial discharge and sediment load in rainy seasons and water deficits in dry seasons. The Pantanal's complex geomorphology, including mega-fans and self-affine landforms, makes it susceptible to anthropic interference.
A recent study analyzing Amazon Rainforest fires from 2003-2020 reveals that most fires are caused by uncontrolled human use of fire for agriculture and deforestation. The study found that Brazil accounted for an average of 73% of detected fires, with pasturelands and natural grasslands being the main burned areas.
A multi-institutional team led by LSU researchers will investigate factors affecting natural methane emissions in Louisiana's coastal wetlands. The study aims to improve understanding of methane cycling processes, which are poorly understood and affect the conditions creating methane emissions.
Researchers found that the Southern cattail plant can scavenge up to 34 times more manganese from contaminated soil than other plants. The study suggests its potential for sustainable rehabilitation of areas affected by iron mine tailings, demonstrating its high efficiency in phytoremediation.
A three-year study in northeastern Illinois and northwestern Indiana found that emergent wetlands support many wetland bird species, regardless of urbanization levels. The research also found that smaller wetlands can be essential habitats for some species, while others prefer larger sites.
New research from the University of Waterloo suggests that relying on stormwater management ponds to restore wetlands is unsustainable and lacks critical ecosystem services. The study found a low proportion of wetlands left in areas with high pond creation rates, posing an environmental challenge.
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 new panda species, Agriarctos nikolovi, has been discovered in Bulgaria, which may have been Europe's last known giant panda. The fossilized teeth, found in the late 1970s, suggest that this ancient panda consumed a largely vegetarian diet, unlike modern pandas.
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.
Researchers have discovered that chanchita, a cichlid fish native to South America, has the highest cold tolerance of all non-native species in Florida, allowing it to survive central and possibly northern Florida's winters. Chanchitas exhibit parental care behavior, with both parents guarding eggs and young.