Articles tagged with Wetlands
Professor Catherine Seavitt Nordenson suggests using soft infrastructure to mitigate flood damage without harming outlying areas. Techniques include restoring wetlands, creating reefs and artificial islands, and seeding oyster beds to absorb water and dissipate wave energy.
Researchers found a significant increase in migratory duck species in the region's reservoirs, which are linked to rice cultivation. The study suggests that these manmade wetlands play a crucial role in supporting bird populations during winter, providing a safe haven for ducks fleeing from declining natural habitats.
A team of University of Pennsylvania geologists observed how sediment was deposited in the Mississippi Delta during the 2011 flood. They found that diverting water into the Atchafalaya River Basin built up sediment in wetland areas, whereas the Mississippi River plume had a more focused and less sediment-rich effect.
Researchers have determined that methane emissions in the Greenland ice sheet date back to Roman times, with a significant increase around 1800 due to industrialization. Today, more than half of methane emissions are man-made, primarily from agriculture and energy production.
Ken Bierly, Senior Partnerships Coordinator at the Oregon Watershed Enhancement Board, has been recognized for his outstanding record of informing political decision-making with ecological science. He has developed tools for watershed management, including wetland regulations and local watershed councils.
A study published in Nature Geoscience found that a significant percentage of the Mississippi River's sand load is diverted into the Bonnet Carre spillway wetlands, rather than flowing into urban areas. This discovery offers new insights into the potential for controlled diversion to mitigate land loss in coastal Louisiana.
The MU researcher's network model can analyze complex networks to identify the most damaging cyber attacks, protect critical infrastructure, and halt disease epidemics. By understanding network resilience, officials can prevent future problems and make informed decisions for conservation projects.
A new species of wirerush has been discovered in the peatlands of northern New Zealand. The species, Empodisma robustum, exhibits unique ecological adaptations that enable it to thrive in nutrient-poor environments. This discovery sheds light on the diversity and ecology of the genus Restionaceae.
A 15-year study found that artificial wetlands can take up more carbon from the atmosphere than natural ones, but may release methane. Both types of wetlands removed large amounts of nitrogen and phosphorus from river water. The study suggests long-term ecological research is useful for determining human intervention's success.
A 15-year study comparing experimental wetlands found that natural development led to higher carbon sequestration rates, but also increased methane emissions. The unplanted wetland retained more carbon, while the planted wetland was more diverse in plant communities.
A new study suggests that temperate freshwater wetlands are more valuable as carbon sinks than currently thought, with an average carbon storage rate of almost twice that of flow-through wetlands. The stagnant wetland stored 317 grams of carbon per square meter per year, exceeding previous measurements in other types of wetlands.
A new analysis of 124 wetland studies reveals that restored wetlands rarely reach the quality of their natural counterparts. After 50-100 years, they are still 23% less in terms of carbon resources and have a 26% lower variety of native plants.
Researchers will use satellite data to survey the vast Congo River Basin, answering questions about water sources and greenhouse gas emissions. The project aims to provide a new method for studying inaccessible areas of the planet.
UC research reveals that duck nest boxes, meant to aid cavity-nesting ducks, can trap and kill turtles. Improperly maintained boxes can have devastating effects on wetland turtle populations.
A radical overhaul of farming is proposed as a 'game-changer' for global food security. The new approach aims to enhance production and protect ecosystems by adopting agroecosystem practices that maintain clean water, air, and biodiversity.
Dr. Ray Semlitsch has been awarded the 2011 Fitch Award for Excellence in Herpetology for his groundbreaking research on amphibian ecology and wetland conservation. His studies have shown that tolerance to contaminants varies among species, and he established the importance of aquatic environments for semi-aquatic amphibians.
Researchers developed a predictive model to identify areas at high risk of wetland habitat loss in the southern United States. The study highlights the importance of conservation efforts in these regions, where urbanization and development have led to significant wetland losses.
Susannah Tringe, DOE JGI scientist, awarded grant to study microbial communities in restored wetlands and their impact on long-term carbon sequestration from a genomic perspective. Her research aims to understand the role of belowground microbial communities in carbon storage and recycling.
Research reveals northern peatlands do not fully account for the initial 10,000-year-old methane increase, with tropical wetlands instead being a likely driver. Northern peatlands still play a crucial carbon-capture role but also emit significant amounts of methane.
The Estero de Domingo Rubio wetland is polluted with heavy metals and pesticides, affecting its water quality and ecosystem. The study highlights the need for greater control over agrochemicals and industrial waste to prevent contamination.
Global coastal wetlands are likely to disappear near the end of the 21st century, with limited sediment supplies and tidal ranges making them vulnerable. Wetlands with higher sediment availability may survive under slow sea-level rise projections.
Researchers found cocaine, ecstasy, and six other drugs in the canals of L'Albufera Natural Park. High levels were detected in north and areas with high population density, warning of potential consequences for humans and environment.
Researchers have developed new maps of the Chesapeake Bay's forested wetlands, increasing accuracy by 30% compared to existing maps. The combined data from LiDAR and SAR sensors reveals previously unknown connections between wetlands, drainage ditches, and ponds.
After 15 years, man-made and natural wetlands were found to be similarly effective in retaining phosphorus and nitrates, and both acted as significant carbon sinks. The naturally colonizing wetland produced more plant biomass and emitted more methane, while the planted wetland hosted a higher diversity of plant species.
Researchers studied the bacterial community structure in four environments of the Tablas de Daimiel National Park, revealing similarities and differences between them. The study found 265 new phylum groups, including those related to Proteobacteria, which are abundant in the superficial sediment sample.
Researchers find that natural methane sources from wetlands in high northern latitudes caused a significant increase in atmospheric methane concentration 40,000 years ago. This contradicts the clathrate gun hypothesis and suggests that human activities are not responsible for current climate change.
Michigan State University scientists have developed a pioneering landscape limnology approach that integrates freshwater lakes, streams, and wetlands. This framework uses GIS data and models to provide science-based tools for managing and protecting these bodies of water.
Scientists are investigating new clean-up methods to limit environmental damage, including applying dispersants underwater and boosting naturally-occurring bacteria that can break down oil. The effectiveness of these approaches remains to be seen as massive amounts of oil remain in the ocean.
Recent AGU research finds prolonged low solar activity will not offset global warming, with a potential temperature decrease of only 0.3 degrees Celsius in 2100. Heat waves have also increased in the Mediterranean region since 1960, with significant increases in number, length, and intensity.
A University of Montreal student is tracking the decline of frog species in Quebec, finding a slight decrease in frogs near Phragmites australis growth, but intact northern leopard frog populations. Experimental research aims to understand pH levels, oxygen, and temperature effects on amphibians in controlled water basins.
Climate change projections indicate major reductions in wetland volume, shortening of water retention time, and changes in vegetation dynamics in the prairie pothole region. This will negatively impact millions of waterfowl depending on the region for their life cycles.
Researchers employed a novel combination of geological and model reconstructions to address spatial variations in sea-level history along the east coast of England. Sediment compaction explained the variations in sea-level observations, revealing striking correlations to the thickness of overlying sediment.
A study published in HortScience found that ornamental canna plants are effective in removing nitrogen and phosphorus from stormwater runoff. Harvesting the above-ground biomass of canna can effectively remove these pollutants from the treatment system.
Phosphorus is a crucial element in agriculture, but its excessive use leads to massive eutrophication problems in water bodies worldwide. Dr. Curtis Richardson will discuss phosphorus biogeochemistry and its role in wetland functioning, highlighting the need for realistic management techniques.
A 11,600-year-old methane spike in ancient Greenland ice suggests wetlands as the primary source, offering relief from oceanic clathrate concerns. Methane emissions from human activities remain a significant concern, with potential to release large amounts of greenhouse gas.
Researchers found that a surge in atmospheric methane gas 11,600 years ago was more chemically consistent with an expansion of wetlands rather than a large-scale melting of frozen methane deposits. This discovery suggests that wetland regions may have played a significant role in regulating global warming during past events.
Scientists have found that rising CO2 levels can stimulate plant productivity and increase marsh surface elevation, potentially increasing the capacity of coastal wetlands to tolerate relative rises in sea level. However, this effect may be short-lived as increased CO2 levels continue to accelerate global warming and sea-level rise.
Recent research advancements reveal new techniques for studying leaf development, while also exploring the potential benefits of aquaculture when practiced sustainably. Large wetlands provide vital ecosystem services, including carbon cycling and freshwater supply, making them crucial for conservation planning.
A new study led by Duke University researchers found that restored wetlands have decreased soil bacterial diversity, but this decrease represents a return to biological health. The composition of these populations can reflect the status of wetland functioning and serve as an indicator of restoration success.
After eight years of near-zero growth, global methane concentrations have resumed their increase, potentially offsetting the slowing growth rate of carbon dioxide. Methane is a key greenhouse gas, accounting for nearly 20% of global warming since the industrial revolution.
The Three Gorges Dam's reservoir will create a new ecosystem with unprecedented fluctuating water levels. Experts propose using terraced ponds, wetlands, and fish net systems to make the most of this situation.
Researchers at Ohio State University have discovered that tropical wetlands can store up to 80% more carbon than temperate wetlands, with the former sequestering around 300 tons of carbon per year. This finding has significant implications for climate change mitigation and highlights the importance of preserving these ecosystems.
Research found that commercially available aquatic garden plants can be used in a production/remediation system to treat wastewater. The study concluded that these plants have the potential to generate revenue for producers and are an aesthetically viable alternative to traditional wetland plants.
A recent white paper by leading coastal scientists suggests that wetlands restoration projects may not provide long-term storm protection for the Louisiana Coast. The researchers argue that there is limited scientific evidence to support the effectiveness of such initiatives in reducing storm impacts.
Experts warn that critical food shortages and high fossil fuel prices are major threats to preserving wetlands worldwide. The United Nations University calls for policy makers to resist pressure to convert wetlands, citing the importance of these ecosystems for safe water supplies, biodiversity, and climate change mitigation.
Researchers have confirmed a new population of critically endangered greater bamboo lemurs in eastern Madagascar's Torotorofotsy wetlands. The discovery raises hopes for the species' survival and increases efforts to protect its habitat from destruction.
Low-budget, locally led mangrove replanting projects are more successful than high-cost government-led projects, achieving survival rates of up to 97%. Planting the correct species in suitable sites and community involvement are key to ecological benefits.
The decline of world wetlands could compound global warming, releasing billions of tonnes of carbon into the atmosphere. Wetlands store 10-20% of Earth's terrestrial carbon and slow organic material decay.
A recent study reveals a drastic decline in shorebird populations over the past 25 years, with migratory species suffering a 73% drop and resident shorebirds declining by 81%. The loss of wetlands and habitats is a significant contributor to this decline, highlighting the need for improved conservation efforts.
A University of Alberta study found that beaver presence increases open water availability by up to nine times, providing habitat and resources for land animals, amphibians, and livestock. The study suggests climate models predict increased drought frequency and length, where beavers can play a crucial role in maintaining wetlands.
Hydroelectricity dams are decreasing Lake Victoria's level by at least two meters, threatening food security and fisheries in Uganda, Kenya, and Tanzania. The dams' overuse has led to papyrus wetland collapse, eutrophication, and algal blooms, with far-reaching consequences for the lake's ecosystem and local populations.
Research team finds PCBs and DDE in Chicago night-heron eggs, but no negative effects on reproduction. Populations remain stable amidst ongoing contamination from Lake Michigan.
Researchers at the University of Wisconsin-Madison have found that dissolved organic material in water increases the biological risk of mercury and may serve as an environmental source. The study's findings suggest that understanding the factors controlling methylation is critical for developing ecosystem-level management strategies.
A six-year study by Duke University scientists found that current phosphorus standards protect the Everglades, but high levels persist near outer edges. The researchers suggest a threshold protective zone of 12-15 micrograms per liter is more realistic for the changeable system.
A recent study found that ponds' community diversity converges after a drought, with only hardy species able to withstand the conditions. This convergence has important implications for wetland restoration and creation, highlighting the need to consider stochasticity and beta diversity in ecological restorations.
The study combines field studies and remote-sensing data to assess the ecological functioning of wetlands in a landscape. The researchers developed statistical models that can predict denitrification potential from easily measurable properties of the soil, helping guide management priorities in a watershed.
Permafrost thaw accelerates rates of melting in northern ecosystems, leading to complex impacts on greenhouse gas fluxes from peatlands. While initial degradation may result in increased carbon sequestration, high methane emissions will eventually outweigh this reduction, posing a significant challenge for climate change mitigation.
Researchers suggest golf course habitats can be improved by creating diverse pond types that mimic natural wetlands, reducing chemical runoff and insect predators. Drying ponds in the fall also benefits amphibians by eliminating bullfrog tadpoles that outcompete other species.
Scientists used satellite images to show a link between rapid city growth and changes in rainfall patterns, including decreased precipitation in winter months. The study found that urbanization can lead to desertification and deforestation, threatening wetland health.
Researchers at Queen's University find Arctic ponds evaporating due to recent climate warming, crossing ecological threshold. Ponds were once permanent water bodies for millennia but are now drying up and becoming saltier as water evaporates.