Articles tagged with Freshwater Ecology
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McGill researchers found that freshwater browning is stunting some fish species' growth, shrinking others' populations, and altering fish communities. This phenomenon has broad impacts on biodiversity, affecting economically important fish species such as northern pike and walleye.
The US has more than 4 million miles of rivers, but existing regulations only account for less than 20% of total river length. Freshwater conservation strategies have historically focused on land use and development, leaving gaps in protection measures for lakes, rivers, and wetlands.
Mosses have been found to remove metals from water by utilizing the help of their microbial symbionts. The key to this process is the cooperation between the moss and its endophytes, which enhance metal tolerance. Mosses from polluted environments were found to host more beneficial microbes that facilitate metal removal.
Florida Atlantic University's College of Engineering has received a $600,379 grant to advance technology targeting harmful algal blooms in Florida's waterways. The project aims to develop novel 3D-printed adsorbent materials for efficient phosphate removal.
A recent study found that almost half of garden ponds surveyed contained at least one invasive plant species. Researchers are calling for environmental education and awareness about the risks of invasive species to prevent their spread. Alternative, native plant species should be promoted to help manage ponds sustainably.
Researchers at the University of Washington successfully tracked salmon populations using airborne eDNA, finding that the airborne DNA concentration fluctuated with visual counts reported by the hatchery. The technique links air, water, and fish, providing a valuable tool for population health monitoring and management.
A recent study found that light color affects phytoplankton growth and nutrient cycling in lake ecosystems. The researchers discovered that the less light available to microalgae, the more important the color of light became for their growth.
Researchers analyzed 11 international constructed floating wetlands projects and found that they can be a competitive solution for improving water quality, especially for nitrogen removal. The cost of removing nitrogen was consistently cheaper than phosphorus, making floating wetlands a more economical option over time.
Stakeholders from Germany, the Netherlands, and Finland met to develop impact plans influencing policies and markets to restore degraded peatlands. The plans aim to align policy goals with specific tasks, support efficient funding and market innovation.
Researchers at Northern Arizona University have discovered a partnership between algae and bacteria that creates a clean-nitrogen machine, turning atmospheric nitrogen into food for river ecosystems. This discovery boosts populations of aquatic insects, which young salmon rely on for growth and survival.
A Connecticut College study found that fungus metabolites may boost the survival of ghost shrimp in freshwater ecosystems. The study showed a 48% lower mortality rate and altered behavior among shrimp exposed to these byproducts.
A new study found that restored floodplain wetlands can recover within a year and show substantial ecosystem benefits rapidly. The study revealed that managing freshwater wetlands for carbon benefits also boosts flood and drought resilience.
A recent genetic study found that populations of the amphidromous goby Luciogobius ryukyuensis are genetically distinguishable, suggesting minimal larval exchange between islands. This highlights the urgent need for conservation efforts to protect vulnerable habitats in island ecosystems.
Researchers have confirmed the presence of Barbonymus schwanefeldii (tinfoil barb) in Laguna de Bay, Philippines' largest freshwater lake. The invasive species can outcompete native fish for food and breeding grounds, posing long-term ecological consequences.
The SpongeBoost project recognizes Planar e.V.'s efforts to restore a 1.1 km section of the Diemel River, reconnecting approximately 20 hectares of floodplain and creating habitats for over 65 species. The award highlights nature-based solutions as effective tools for addressing climate and biodiversity crises.
The SpongeBoost project recognized Planar e.V. for restoring a 1.1 km section of the Diemel River, reconnecting 20 hectares of floodplain and creating habitats for over 65 endangered species. The 'SpongeBooster of the Year' award aims to promote nature-based solutions and cost-effective restoration methods throughout the European Union.
Researchers have mapped Colombia's eastern lowlands to identify areas of peatlands, a crucial carbon storage system that can help reduce the country's emissions. The study found an estimated 7,370-36,200 square kilometers of peatlands, with potential to store more carbon than all the world's trees.
Researchers found that nutrient hoarding by selfish bacteria influences carbon and nutrient availability in freshwater ecosystems. In two Croatian lakes, mesotrophic Crniševo Lake showed higher rates of selfish activity than oligotrophic Kozjak Lake.
The WNFC's player ambassadors will amplify public service announcements, social media content, and local community education events to raise awareness about cardiovascular disease and CPR education in women. The league has also implemented a requirement for all coaches to be certified in CPR, AED, and first aid.
The study introduces an innovative method to detect and classify floodplains based on their ability to attenuate floods. The Hydraulic Floodplain Classification emphasizes the variable capacity of the landscape to influence flood routing, enabling better water resource assessments and floodplain management applications.
A study by Eawag and the University of Zurich found that human impacts on biodiversity are widespread and severe, with average species declines of 20% across all biogeographic regions. The composition of species communities is also shifting, with environmental pollution and habitat changes having a particularly negative impact.
Experts at Flinders University are calling for a new approach to water security on Pacific islands, where rising sea levels threaten local water supplies. Infiltration galleries, which extract fresh groundwater from shallow depths, may provide a solution, but more research is needed on their optimal design and performance.
Researchers Garett Sansom and Lindsay Sansom will evaluate soil conditions in Settegast and Lakewood neighborhoods for cancer-causing heavy metals and polycyclic aromatic hydrocarbons. The project aims to identify residents' environment-related concerns and develop a better understanding of local priorities and challenges.
Global glacier mass loss has increased by 36% since 2000, with 6,542 billion tons lost between 2000 and 2023. This results in an 18 mm annual contribution to global sea-level rise, making glaciers the second-largest contributor after ocean warming.
A study found that reductions in zinc and copper pollution led to improvements in freshwater biodiversity in England's rivers. The researchers used statistical modeling to investigate various factors contributing to the decline in metal pollution.
A recent Hungarian study found that garden pond features such as age, area, aquatic vegetation, and shoreline vegetation influence the occurrence of animals like amphibians, odonates, and birds. The study highlights the importance of pond management practices to support biodiversity in urban areas.
A recent study found that extreme climate events in fall 2022 pushed thousands of lakes in West Greenland across a tipping point, leading to changes in water quality, chemical properties, and biodiversity. The lakes, which previously provided drinking water and sequestered carbon, now emit more carbon dioxide.
A new study reveals that bacteria species in Lake Mendota rapidly evolve over time, responding to changing seasonal conditions. The researchers found that hundreds of separate species would return almost fully to near copies of their genetic predecessors after a thousand or so generations of evolutionary pressures.
A recent study found that connectivity loss within pond networks leads to significant declines in microbial diversity and community evenness. The loss of connectivity disrupts trophic interactions, causing reduced biomass in zooplankton grazers and further exacerbating the decline in diversity.
The Africa-UBC Oceans and Fisheries Visiting Fellows Program has selected two exceptional scholars, Dr. Cynthia A. Adinortey (Ghana) and Dr. Antony Otinga Oteng’o (Kenya), to collaborate with UBC researchers on ocean sustainability projects.
A new seven-point strategy devised by international experts outlines steps for safe, equitable, and sustainable global water management. The plan emphasizes local collaboration, community engagement, and inclusive policies to foster peace and security.
The Tennessee RiverLine initiative has been awarded a $500,000 Area Development grant to support the development of comprehensive Planning and Design Standards. These standards will help accelerate investments in river access amenities, outdoor recreation infrastructure, and community connectivity across the Tennessee River valley.
The UT Extension program has improved safety along the Buffalo River by installing GPS mile markers, assisting first responders during emergencies. The project, launched in partnership with local organizations, aims to reduce emergency response time and benefit thousands of river visitors annually.
Researchers at Loma Linda University found the Salton Sea's shoreline is retreating at an increasing rate, creating more polluted dust from agricultural runoff. The study forecasts parts of the North Shore will retreat up to 172 meters by 2041, posing health risks to nearby communities.
Researchers analyzed steroids from animal dung in lake sediments to determine the dominant large herbivores that lived in northern Yellowstone National Park. The study found bison and elk as primary species for the last 2,300 years, with impacts on local ecosystems.
A new study by Harvard researchers finds alarmingly high PFAS concentrations in fish tissues even up to 8 km from the military base. The results underscore the urgent need for more comprehensive monitoring of PFAS in aquatic ecosystems, particularly in regions where freshwater fishing is an important food source.
The world's freshwater lakes are freezing over for shorter periods due to climate change, affecting more than a billion people worldwide. Changes in ice duration have major implications for human safety, water quality, biodiversity, and global nutrient cycles.
A new policy brief argues that citizen scientists are crucial for meeting global water quality targets, providing valuable data and community involvement. Successful case studies show how collaboration with locals can improve water quality monitoring, education, and rapid response.
A new study from York University finds that lake ice quality is deteriorating due to climate change, making it unstable and unsafe for humans. The researchers warn of the dangers of thin layers of black ice and white ice combinations, which can lead to accidents and even fatalities.
New research from the University of Pittsburgh shows that treating abandoned mine drainage in Pennsylvania is both successful and cost-effective, particularly benefiting vulnerable communities. However, current appropriations are insufficient for long-term treatment and addressing other hazards, requiring an additional $3.9 billion.
The Cary Institute will collect data on invasive mussels, water quality, and other species to support fisheries and inform management decisions. The three-year project will provide vital information for managing the river and its fisheries.
A growing global understanding of drought's impacts, but significant gaps remain in affected communities and developing countries. Long-lasting droughts heighten awareness, while economic factors influence responsiveness to the issue.
Researchers analyzed lake macroinvertebrate fauna, particularly chironomids, to reconstruct the lake's natural state. This helps establish a reference point for conservation purposes, as significant changes occurred during the economic boom and fish stocking.
A recent study predicts that lakes worldwide will experience unprecedented surface and subsurface warming, leading to severe disruptions in ecosystems. Tropical lakes are expected to be the first to emerge from natural temperature bounds, while high-latitude lakes may shield their subsurface layers from surface warming.
A recent study found that nearly 50% of non-Indigenous localities and 54% of Indigenous villages in the Brazilian part of the Amazon basin are prone to isolation during severe droughts. Severe droughts result in extended periods of low water levels, affecting communities' access to goods, services, healthcare, education, and livelihoods.
Researchers sequenced DNA of 87 structurally colored bacteria to identify genes responsible for their glittering structures. The findings could lead to environmentally friendly dyes and materials.
A recent study found that sucralose affects the behavior of cyanobacteria and diatoms in aquatic environments. Sucralose concentrations increased freshwater cyanobacteria population but spiked and crashed brackish cyanobacteria population, while diatom populations decreased across both freshwater and brackish water sites.
Climate change projections suggest that land-locked lakes on the Tibetan Plateau will increase in volume fourfold by 2100, leading to significant land loss and related impacts. This could alter the landscape, affect wildlife migration routes, and exacerbate climate change through increased greenhouse gas emissions.
Researchers have discovered that complementary genes in bacteria and algae living in the same algal colonies coordinate the use and movement of nutrients within the colony. This discovery could lead to new ways to prevent harmful algal blooms, improving water quality and habitat for aquatic organisms.
A new study by the University of Plymouth found that saturated soils in upland regions could negatively impact the survival rates of young oak saplings and acorns. The research highlights the importance of considering soil conditions when creating temperate rainforests to combat climate change.
Climate change threatens freshwater habitats, disrupting microbial communities essential for nutrient cycling and water quality maintenance. Many abundant freshwater bacteria with small genomes experience extended periods of adaptive standstill, limiting their ability to adapt to changing environmental conditions.
A new landscape evolution model suggests that the first humans in Australia migrated rapidly across the continent following riverine corridors and coastlines. The study identifies areas of archaeological significance and provides insights into the impact of climate-driven geography on human dispersal.
A mysterious plasmid, pBI143, found in 90% of human intestines, could be used to identify faecal contamination and offer insights into intestinal diseases. The discovery also highlights the prevalence of 'cryptic' plasmids in human gut microbiota.
Researchers found that salt marsh restoration can reduce flood risk, preserve habitats, and provide recreational opportunities. The study also emphasizes the importance of integrating nature-based solutions into comprehensive climate resilience strategies to mitigate future climate change impacts.
A review of current research on Australia's non-perennial rivers highlights the need for a new type of research attention due to emerging threats from climate change and human impacts. The study emphasizes the importance of addressing knowledge gaps to preserve and protect these vital waterways.
A new water quality analysis technique can detect organic chemicals in rivers and lakes, identifying their source and predicting their impact. This method uses high-resolution mass spectrometry to analyze water samples within an hour, providing a comprehensive overview of all organic molecules present.
Zooplankton biomass and behavioral patterns have been altered by human-driven changes in water temperature and food webs. The study found that warming temperatures and invasive species modify the timing of certain events in their life cycles.
Excavations at La Marmotta, Italy, uncovered five Neolithic canoes dating between 5700-5100BC, featuring advanced construction techniques. The discovery provides invaluable insights into early navigation and the technological sophistication of ancient communities.
Numerical models help assess ecological impacts of climate change on lakes by simulating changes in phytoplankton composition and community stability. The study found that warming increased seasonal variability in phytoplankton, leading to reduced overall evenness and increased species loss over time.
Researchers studied Prorocentrum cordatum to understand its molecular processes, revealing a unique photosynthetic machinery that may help it adapt to changing light conditions. The findings could lead to improved understanding of harmful algal blooms and their role in climate change.