Articles tagged with Lakes
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A new study of Swedish lakes suggests that power station emissions may have played a smaller role in acidifying the lakes than previously assessed. Organic carbon from living organisms has been found to be a significant contributor to lake acidity, and pre-industrial levels were likely even higher.
A well-preserved, 96-million-year-old fossil snout discovered in Texas indicates that the prehistoric crocodile Terminonaris originated in the Lone Star State and North America. The find, which is the oldest of its kind worldwide, provides new insights into the group's wider distribution range and age.
A University at Buffalo study found that Jakobshavn Isbrae expanded outward at a similar pace as it retreated in recent years, supporting evidence that calving glaciers are sensitive to climate change. The glacier's growth was linked to the Little Ice Age period around 200 years ago.
Karen Hixon, a Texas Parks and Wildlife Commission member, will receive the ESA's 2011 Regional Policy Award for her dedication to informing policy decisions with ecological science. The award recognizes her outstanding record of promoting environmental stewardship in local communities.
A new study suggests that the threat posed by invasive Asian carp to the Great Lakes ecosystem is real and warrants action. The research finds that separating the Great Lakes and Mississippi River basins through hydrological separation could provide a permanent solution to prevent further ecological and economic harm.
A multidisciplinary team led by RIT professor Anthony Vodacek is conducting a comprehensive survey of Lake Kivu to understand the interplay between volcanism, faulting, and biological processes on the region's biodiversity. The study aims to provide scientific data for informed decision-making on land use and preservation in Rwanda.
Researchers found evidence of coincident timing between ancient Salton Sea flooding and fault rupture, potentially triggering large earthquakes on the southern San Andreas Fault. The study suggests heightened preparedness for a major quake immediately following smaller quakes in the stepover zone is warranted.
A Fulbright scholar is studying the ecological theory of Patagonian lakes in Argentina's Andean heights, focusing on nutrient chemistry and planktonic inhabitants. The research aims to establish a baseline for understanding lake nutrient supplies in 'ancestral,' pre-development conditions.
A Baylor University study found that sunlight reduces the toxicity of golden algae, which kills millions of fish every year. The research suggests that longer exposure to natural sunlight decreases the algal toxin's effect on fish and other aquatic organisms.
Researchers found that European alpine soils generally retain similar amounts of phosphate, ranging from 9-145 mmol kg-1, with aluminum oxide concentration being the key factor. Acidified soils retain more phosphate than non-acidified ones.
A team led by Dr. Marco Tedesco is tracking the lifecycle of a supraglacial lake on the Jakobshavn Isbræ glacier in Greenland. The team will study the lake's formation, drainage, and impact on glaciers' flow towards the sea.
Researchers analyzed a pristine meteorite, finding that its organic compounds changed over time due to asteroid geology changes. Amino acids and monocarboxylic acids were present, essential for the evolution of first life forms on Earth.
Scientists discovered diverse amino acid amounts in Tagish Lake meteorites, suggesting water alteration played a role in their formation. The findings provide new insights into pre-biotic chemistry on asteroids and may impact our understanding of the origin of life on Earth.
Researchers at Brown University found a significant link between climate change and the Norse settlements' disappearance in Greenland. The Little Ice Age, which began in the 1400s, is believed to have played a major role in their demise.
Two of Greenland's largest glaciers have lost sufficient ice to equal 300 gigatons in the last decade, equivalent to seven years of normal snow accumulation. Meanwhile, Helheim glacier gained a small amount of mass over the same period, providing a high-definition picture of climate-caused changes on the island.
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 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.
A new study by UC Davis found that two groups of pupfish from the Bahamas and Yucatan peninsula show extreme evolutionary changes, adapting to specialized diets in just a short period. The research suggests that these rapid evolutions are unique to these specific environments.
A new study finds that human responses to a changing environment determine environmental tipping points in ecosystems. Regulatory choices can influence behavior and alter ecosystem outcomes. Strong institutional support is crucial for effective management.
The spread of non-native zebra and quagga mussels in the Great Lakes has caused significant ecological changes, stripping lakes Michigan and Huron of life-supporting algae. This has resulted in a remarkable transformation and threatens multibillion-dollar U.S. fisheries.
Scientists discovered remarkably preserved remains of ancient organisms in Scottish lochs that lived a billion years ago. These fossils show complex algal cells with nucleus, mitochondria, and chloroplasts, indicating early evolution of photosynthesis and sexual reproduction.
Researchers at the University of Gothenburg have developed a method to study lake-bottom sediments and infer fish death in acidified lakes. By analyzing microscopic remains of dead midge larvae, they can recreate the history of the lake back to the early 19th century.
New research suggests that wild migratory birds, such as bar-headed geese, may contribute to the spread of bird flu by carrying the virus between domestic farms and wetlands. The study found a significant link between Tibet, Qinghai Lake, and H5N1 outbreaks in both wild and domestic birds.
A year-long study by University of Nevada, Reno researchers found a significant decline in native fish species density at Lake Tahoe since 1951. The team recommends establishing a management plan to protect the nearshore zone habitat critical to native fish populations.
The study found that the Teshekpuk Lake region contains some of the highest nesting bird densities and nest productivity across Alaska's Arctic. Additionally, nests at the site showed higher nest survivorship rates compared to another site in the Prudhoe Bay region with oil extraction activities.
New research reveals ancient 'megadroughts' in the Southwest US, which may be followed by a cooler period. The study used sediment cores to analyze past climate conditions and found similarities with present-day warming trends.
Scientists discovered an 11,500-year-old Paleoindian house in central Alaska with a cremated child skeleton. The findings provide a unique glimpse into the domestic life of the region's early people, including women and children. The child was around three years old and died before being cremated in a pit within the house.
An international team of scientists has compiled paleoclimate records revealing an extreme megadrought in the Afro-Asian region 17,000 to 16,000 years ago. This drought, known as the H1 megadrought, had significant consequences for Paleolithic humans and raises questions about the potential severity of climate change.
A team of researchers from Kent State University has studied the history of drought in the Pacific Northwest over the past 6,000 years. They used sediment records and tree-ring data to find that drought duration increased in response to decadal oscillations driven by marine processes.
Researchers extracted a 6,000-year climate record from Washington state's Castor Lake, revealing longer, more extreme dry spells since 1200 AD, linked to changing El Niño/La Niú patterns.
The study found that Lake Baikal's seasonality of surface water temperatures relates to the fluctuating intensity and path of the jet stream, while also tracking decadal-scale variations in the Earth's rotational velocity. This information can help forecast seasonal onset in Siberia and predict longer-term ecological changes.
A new study dating back 1,000 years of earthquakes at the San Andreas Fault shows no correlation between lake changes and earthquake timing. Despite this, researchers warn of a likely buildup of tectonic stress, making a major quake possible for southern California in the near future.
Studies reveal marine ferromanganese crusts as potential mineral resources, while CO2 emissions from volcanic lakes are also highlighted. Additionally, progressive uplift of the north Tibetan Plateau is confirmed since the middle Miocene, with implications for geological processes and catastrophic events.
A field study has been conducted to investigate the causes of winter inversions in urban areas like Salt Lake City, which can trap pollutants and lead to poor air quality. The researchers used a range of methods, including weather balloons, cars, and gliders, to collect data on temperature, wind, and moisture.
Recent research reveals significant changes in China's lakes over the past several decades, with a decline in lake surface area and number, and creation of new lakes. Climate change and human activity are contributing factors, highlighting the need for more detailed regional studies to confirm these observations.
New phosphate-free automatic dishwashing detergents are being developed to combat water pollution, but they may not be as effective as previously thought. Researchers are working on alternative formulas that can clean dishes without contributing to environmental harm.
Scientists have documented elevated levels of PCBs and PBDEs in carp from eastern Lake Erie, which can disrupt endocrine systems and cause health issues. The findings highlight the lasting effects of human activity on the Great Lakes' ecosystem.
A new study reveals that nearly a third of zooplankton's diet comes from land-derived organic matter. The research provides insight into the complex interactions within aquatic food webs and the role of watershed inputs.
Researchers have developed a computer algorithm to identify and block distributed denial-of-service (DDoS) attacks on mobile ad hoc networks in under 22 seconds. The technique can halt 80% of attack traffic and provide a model framework for building better security systems.
A Purdue University study found that Lake Erie's large hypoxic zone negatively impacts aquatic life, but not all fish species equally. The study showed that some species, like yellow perch, were less affected, while round goby and rainbow smelt were more significantly impacted by the low oxygen levels.
A UW-Madison team, led by Chris Kucharik and Adena Rissman, is conducting a comprehensive study on the Yahara watershed to understand the links between water systems, land use, climate change, and human activities. The goal is to develop tools for managing water resources in balance with social, economic, and environmental considerations.
A team of researchers from the University of Notre Dame and The Nature Conservancy has successfully validated their environmental DNA (eDNA) technique for detecting invasive Asian carp in the Chicago-area waterway. This breakthrough method, which uses genetic material from aquatic organisms to identify species presence, has been hailed...
Astronomers used Hubble Space Telescope to observe eight massive stars in Small Magellanic Cloud, finding five without large neighbors and three in tiny clusters. The study suggests that giant stars can form randomly across the universe, including in isolation.
A study by Michigan State University associate professor Elena Litchman reveals the potential impact of invisible microbial invaders on terrestrial and aquatic ecosystems. Climate change is expected to exacerbate microbial invasions, leading to significant ecosystem changes.
A bacterium isolated from Mono Lake has been found to use arsenic as a building block for its growth and survival. The new finding has significant implications for the origins of life research and could redefine our understanding of what constitutes life.
Scientists have found a bacterium that can grow using arsenic instead of phosphorus, challenging our understanding of life's chemical requirements. This discovery expands the scope of the search for life beyond Earth and suggests that alternative forms of life might exist in unusual environments.
A new study suggests that parts of Peru and Bolivia will become a desert-like setting if temperatures rise more than 1.5 to 2 degrees Celsius above modern times. The change would be disastrous for the water supply and agricultural capacity of La Paz, affecting its two million inhabitants.
A team of researchers led by Michigan State University will investigate the effects of increasing doses of mercury on yellow perch. The study aims to shed light on the negative repercussions of low-level pollutants on fish populations.
Researchers will study coastal algal bloom risk and nutrient sources, create models to forecast HABs and develop action plans to reduce them. The project aims to restore the physical, chemical and biological integrity of near-shore waters globally.
A recent study has found that environmental changes, such as dry and wet conditions, may have influenced the development of early human ancestors. The research team analyzed chemical compositions of rocks from Olduvai Gorge, which revealed more extreme climate fluctuations than previously thought.
Researchers discovered a rare colony of moss, worms, and shrimp flourishing around a geothermal vent at the bottom of Yellowstone Lake. The unique environment is characterized by inky black water, high temperatures, and toxic gases.
A joint MSU-UMich initiative will use the grant to help communities understand and adapt to climate changes in the Great Lakes region. Climate change is projected to impact lake levels, precipitation patterns, and average seasonal temperatures.
A new study published in Behavioral Ecology and Sociobiology found that male cichlid fish often desert their mates, leaving females to care for their young on their own. This abandonment severely compromises the quality of care provided by females, making them vulnerable to predators.
Researchers will investigate how climate change affects Great Lakes water quality, focusing on extreme weather events and their impact on nutrient, pesticide, and sediment levels. The study aims to develop strategies for watershed councils and government entities to reduce water quality impacts.
Researchers examine how silicic magma contributes to continental crust growth, the dynamics of the Tibetan Plateau's formation, and the nature of earthquakes in the Eastern Carpathians. New data suggest that continental delamination may be responsible for seismic activity in this region.
A USGS study found that taste-and-odor compounds are commonly associated with cyanotoxin presence, highlighting the need for increased surveillance and public alert systems. Cyanotoxins can be poisonous to people, aquatic life, pets, and livestock, causing symptoms like skin rashes, stomach upset, seizures, or death.
The quagga mussel's voracious appetite for phytoplankton is causing a decline in its abundance, which in turn is affecting the food chain and fisheries in southern Lake Michigan. As a result, zooplankton populations are dwindling, and fish species such as alewives, chubs, and Atlantic salmon are facing extinction.
A new study reveals a clear link between high E. coli bacteria levels in inland Ohio lakes and increased risk of gastrointestinal illness among swimmers. The researchers argue that a reliable method to predict when bacteria levels are likely to be higher is needed to issue timely warnings.
A team will evaluate watershed sources, lake water stratification, and wind conditions to develop a predictive model for potential changes in hypoxia. The results will help identify acceptable limits for nutrient levels to reduce hypoxia in Green Bay.