Articles tagged with Lake Ecosystems
Researchers have developed an interest in studying glacial lakes and their impact on glacier behavior and downstream ecosystems. Over a 35-year period, a team of scientists has produced a detailed inventory of glacial lakes and dams in Alaska and northwest Canada.
A new study has shown how climate change impacts the ecosystems of large lakes by varying their water layers' mixing through seasons. Mixing controls heat, oxygen, nutrients, and pollutants between layers, shaping ecosystems' adaptations.
Invasive fish and crustaceans significantly reduce lake organism abundance, degrading water quality. Researchers provide guidance on managing waterbodies to prevent ecosystem collapse.
A new study by ANU researchers has found human impacts such as deforestation and mining have significantly transformed Lake Kutubu's algal and geochemical compositions. The lake is now showing signs of ecosystem collapse, including plumes of chemicals and health issues for local communities.
Researchers found that rusty crayfish exhibit increased diet specialization and boldness in mid-abundance lakes, where individual behaviors become more diverse. This specialization can lead to impacts on spawning fish populations and ecosystem dynamics.
A new study suggests that resisting ecosystem changes may be futile, instead recommending a 'RAD' framework that involves accepting, directing, or resisting transformations. The authors argue that embracing change is a viable response to environmental shifts, rather than viewing it as a last resort.
Scientists from US and Iran are collaborating on restoring Lake Urmia, which has lost 95% of its volume over two decades. The team's findings show that setting a target water level may not solve the lake's problems, highlighting the need for ecosystem-based restoration efforts.
Researchers found that high biodiversity in aquatic ecosystems is essential for meeting human needs for micronutrients like calcium and iron. Seafood from biodiverse sources can help combat 'hidden hunger,' a phenomenon where people have access to enough calories but not enough nutrients.
Conservation projects that prioritize land-dwelling species can have a significant impact on freshwater ecosystems, increasing benefits by up to 600%. The research found that targeting both terrestrial and aquatic species simultaneously can lead to substantial gains in freshwater conservation. This approach requires considering the con...
A new study using ecological network models finds that many ecosystem engineers, such as the shipworm and beavers, create stability in ecosystems, preventing extinctions. The model uses simple rules to show how food webs are assembled and species interactions change over time.
A research team from Trento and Utrecht universities found that the Earth's rotation influences Lake Garda's water movement and deep water mixing. This effect contributes to the transport of oxygen, nutrients, and substances between the surface and deep layers.
A team of researchers, led by Princeton's Rob Pringle, studied the effects of invading predators on prey species in the Bahamas. The study found that when prey can respond rapidly to the presence of a predator, predators might reduce the ability of prey species to coexist.
Hippos play a key role in transporting silicon from land to water through their faeces, influencing over 76% of the total silicon transported along the Mara River. This process is crucial for ecosystems like Lake Victoria, where a lack of silicon can lead to food shortages and ecosystem collapse.
The introduction of lake trout in Yellowstone Lake has altered the numbers, diet, and behavior of organisms from microscopic zooplankton to large animals such as bears and bald eagles. The study found that the impact of lake trout on native cutthroat trout has cascaded across the ecosystem.
A recent study highlights the crucial role of indigenous knowledge in restoring degraded ecosystems. Indigenous communities have contributed significantly to ecological restoration through traditional practices such as anthropogenic burning and rotational swidden cultivation systems, resulting in highly biodiverse ecosystems.
Researchers found that hybridization during eutrophication led to an expansion in biodiversity of the European whitefish species once the ecosystem recovered. This rapid niche expansion was made possible by genetic variation, demonstrating functional variation can quickly recover after ecosystem restoration.
Researchers discovered a diverse microbial ecosystem at Laguna La Brava, with Euryarchaeota and Crenarchaeota groups dominating the environment. The absence of cyanobacteria led the authors to suggest alternative microorganisms precipitating minerals in these extreme conditions.
Researchers found that artificial lighting near waterways attracts more flying insects and changes the predator community living beneath the lights. The study highlights the importance of considering ecological impacts when designing new lighting concepts.
The Dartmouth-led research team will explore how human population growth, climate change, and land use have affected lake water quality in the Northeast, with a focus on cyanobacterial blooms and real-time monitoring. Citizen scientists will also be involved in collecting data through the Lake Observer app.
Kodiak bears are abandoning their traditional diet of sockeye salmon due to climate change, shifting to early-arriving red elderberries. This 'prey switch' has significant implications for the island's ecosystem, potentially affecting birds that rely on salmon and altering bear demographics.
A decade-long study in Antarctica's Dry Valleys reveals that an extreme melt season triggered changes in physical and biological characteristics, including increased soil species and population increases. The findings suggest that abrupt climate events can cause long-term alterations in polar ecosystems.
Researchers propose a new approach to evaluating biodiversity, focusing on species migration and abundance within ecosystems. By analyzing these dynamics, experts can better understand ecosystem responses to environmental changes and develop more effective conservation strategies.
Researchers investigate how climate change and environmental toxins affect the world's largest freshwater lake. Studies on amphipods found that temperature increases can be catastrophic for some species, while chemical pollution can have mass impacts on individual species and ecosystems.
The study found that wildebeest carcasses play a crucial role in the ecosystem, providing food for various animals and supporting fish populations. The nutrient-rich carcasses also decompose over time, releasing phosphorus that supports algae, insects, and fish.
A team of researchers led by Alena Gsell tested four statistical indicators to predict regime shifts in lakes. While some indicators showed promise, predicting crisis points was not always successful. Collecting more frequent and advanced data could improve early warning systems for lake ecosystems.
Scientists at the University of Montana's Flathead Lake Biological Station have documented ancient methane-derived carbon in stonefly biomass across four river floodplains. The research reveals that up to 67% of the carbon in stonefly tissue came from methane, with millennial-aged and ancient carbon sources identified.
New research reveals how a single warming event in Antarctica may indicate future ecosystem changes, with cascading ecological consequences observed over the last 15 years. The study found that massive flooding caused by melting glaciers led to dramatic changes in the environment, including erosion of streams and lake levels rising.
Researchers discovered 'ecosystem canaries' can provide early warning signs of large, potentially catastrophic, changes in ecosystems. These species often vanish first from a stressed ecosystem, serving as an indicator of an approaching tipping point.
Intense fishing changes fish characteristics, passed down to future generations, causing population fluctuations and destabilizing the ecosystem. The study simulates these effects in Lake Constance, highlighting the importance of considering the entire ecosystem when evaluating fishing impacts.
Researchers at University of British Columbia found that human-induced introduction of new species can cause 'reverse speciation', where two similar species merge into one hybrid species. This shift has significant consequences for the ecosystem, altering ecological roles and impacting biodiversity.
A UK-based remote satellite monitoring programme will help monitor the impact of human activities on the Laguna Bacalar's ecosystem. The project will use satellite data to analyze changes and provide evidence for conservation efforts, benefiting from a £1.5M funding by the UK Space Agency.
The NSF's Opportunities for Promoting Understanding through Synthesis (OPUS) program has awarded $1.5 million in new grants to researchers exploring complex topics like the Amazon ecosystem and mosquito diseases. These projects integrate insights from multiple studies to foster new knowledge and research directions.
A fossilized owl pellet study reveals that the small mammal community was stable and resilient around 13,000 years ago, but human-caused changes since the late 1800s have caused a massive drop in biomass and energy flow, indicating a loss of natural resilience
The round goby's rapid colonization of the upper Danube has led to a decline in native fish species such as barbel and European chub. The species' adaptability and dominance of food webs have resulted in a 'novel ecosystem,' with previously unknown combinations of species.
Researchers at TUM developed a new method to monitor large plant populations in lakes using aerial images. They created a digital library of plant spectral characteristics to evaluate the images, factoring out image errors and providing early detection of ecosystem risks.
Researchers used pitcher plants to identify signs of ecosystem trouble, finding that nutrient overloads can trigger drastic changes. The study discovered a reliable way to create tipping points and aims to identify early warning signals.
Researchers at the University of Southampton have developed a method to predict environmental collapse by identifying 'flickering' signs in ecosystems, which may also warn of crises in agriculture and social systems.
The Cary Institute of Ecosystem Studies has received a major grant to develop an innovative graduate training program in freshwater ecology, focusing on lake conservation and sustainability. The GLEON Graduate Fellows Program will train the next generation of scientists in leadership, research, and communication skills.
A new report proposes science-based strategies to monitor and set limits for air pollution, aiming to protect and restore U.S. ecosystem health. The authors review current pollution evaluation criteria and propose critical loads of pollutants to design policy and manage ecosystems.
Researchers have found that models used to assess catastrophic changes can also predict environmental collapse. By monitoring variability in key ecosystem processes, scientists can detect early warning signs of regime shifts and potentially prevent ecological breakdowns.
Scientists at the University of Wisconsin-Madison have detected an unmistakable warning sign of an impending ecological catastrophe in a remote Wisconsin lake. The team, led by ecologist Stephen Carpenter, monitored vital signs across three years and found subtle changes in the system's natural patterns of variability, indicating a reg...
Researchers detected a warning signal of impending ecosystem collapse in a Wisconsin lake by monitoring its complex signals and biological community changes. The study provides evidence that radical change can be foreseen, potentially preventing ecological catastrophe.
Researchers will drill through Lake Vida's thick ice cap to study the brine and sediment below, aiming to understand the ecosystem's history and its survival strategies in extremely cold conditions. The project, funded by a $1.1 million grant, may reveal insights into life on Earth dating back thousands of years.
A new study reveals that the slightest environmental perturbation can tip an ecosystem's balance, with unpredictable and irreversible consequences. Icelandic midges provide a unique model to assess these dynamics, highlighting the fragility of ecosystems and the importance of understanding their responses to human-induced changes.
Scientists discover that community assembly history influences productivity-biodiversity relationships in natural ecosystems. Experimental study with microorganisms reveals that the sequence of species arrival affects these relationships, which is a key factor in understanding diversity patterns.
Researchers have discovered that the history of community assembly is a key predictor of future biodiversity and ecosystem productivity. The study used microorganisms to manipulate productivity and found that the sequence of species arrival from a regional pool of colonists had a large effect on the productivity-diversity relationship.
Scientists uncover a unique ecosystem in Lake Vida, with ancient organic material and sediment, and a liquid zone beneath the ice. The discovery provides insights into the evolution of life on Earth and potentially offers clues to finding signs of ancient Martian microbial life.
Scientists have found that gradual changes in ecosystems can lead to catastrophic collapse, as even small disturbances can trigger irreversible shifts. This is evident in various ecosystems around the world, including coral reefs and forests.
A study on Isle Royale National Park found that wolves' increased hunting efficiency in snowy winters led to a decline in moose populations, reducing browsing pressure on balsam fir saplings. This cascade of ecological responses highlights the potential impact of apex predators' behavioral adaptations to climate change.