Current Great Lakes News and Events

Current Great Lakes News and Events, Great Lakes News Articles.
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Release of nutrients from lake-bottom sediments worsens Lake Erie's annual 'dead zone,'
Robotic laboratories on the bottom of Lake Erie have revealed that the muddy sediments there release nearly as much of the nutrient phosphorus into the surrounding waters as enters the lake's central basin each year from rivers and their tributaries. (2021-02-19)

HKU planetary scientists discover evidence for a reduced atmosphere on ancient Mars
The transition from a reduced planet to an oxidized planet is referred to as the Great Oxidation Event or GOE. This transition was a central part of our planet's evolution, and fundamentally linked to the evolution of life here -- specifically to the prevalence of photosynthesis that produced oxygen. Planetary geologists at HKU have discovered that Mars underwent a great oxygenation event of its own -- billions of years ago, the red planet was not so red. (2021-02-16)

Past earthquakes triggered large rockslides in the Eastern Alps
Geologists from the University of Innsbruck shed new light on a long-lasting debate about the trigger mechanism of large rockslides. Lake mud in two Alpine lakes in Tyrol reveal that rare strong earthquakes are the final cause of multiple, prehistoric rockslides in the Eastern Alps. The steep rock slopes were degraded by a series of prehistoric earthquakes, larger than any of the historically documented events in the region of the past ~1000 years. The study has now been published in the Journal Nature Communications. (2021-02-16)

First humans in Tasmania must have seen spectacular auroras
A small sub-alpine lake in western Tasmania has helped establish that 41,000 years ago Australia experienced the Laschamp geomagnetic excursion and that Tasmanian, Aboriginals, would've seen it. (2021-02-15)

High greenhouse gas emissions from Siberian Inland Waters
Rivers and lakes at high latitudes are considered to be major sources for greenhouse gas emissions to the atmosphere, but these losses are poorly constrained. In a study published in Nature Communications, Umeå University researchers and collaborators quantify carbon emissions from rivers and lakes across Western Siberia, finding that emission are high and exceed carbon export to the Arctic Ocean. (2021-02-09)

Collapsed glaciers increase third pole uncertainties: Downstream lakes may merge within a decade
According to researchers from the Institute of Tibetan Plateau Research (ITP) of the Chinese Academy of Sciences, meltwater from ice avalanches has been filling downstream lakes in a way that may cause previously separated lakes to merge within the next decade, thus disrupting the function of ecosystems in the region. (2021-02-09)

Arctic stew: Understanding how high-latitude lakes respond to and affect climate change
To arrive at Nunavut, turn left at the Dakotas and head north. You can't miss it--the vast tundra territory covers almost a million square miles of northern Canada. Relatively few people call this lake-scattered landscape home, but the region plays a crucial role in understanding global climate change. (2021-02-05)

Global warming found to be culprit for flood risk in Peruvian Andes, other glacial lakes
Human-caused warming is responsible for increasing the risk of a glacial outburst flood from Peru's Lake Palcacocha, threatening the city below. This study is the first to directly link climate change with the risk of flooding from glacial lakes, which are growing in number and size worldwide. (2021-02-04)

Coral decline -- is sunscreen a scapegoat?
A recent paper in the journal of Environmental Toxicology and Chemistry (ET&C) summarizes the scientific literature assessing the impact of organic UV filters on coral ecosystems. The researchers concluded that while organic UV filters do occur in the environment, there is limited evidence to suggest their presence is causing significant harm to coral reefs. (2021-02-02)

Key switchgrass genes identified, which could mean better biofuels ahead
Biologists believe they are one step closer to a long-held goal of making a cheap, widely available plant a source for energy and fuel, meaning one of the next big weapons in the battle against climate change may be able to trace its roots to the side of a Texas highway. The complex genome analysis of switchgrass is explained in a new paper in Nature. (2021-01-27)

Invasive mussels now control a key nutrient in the American Great Lakes
The spread of quagga mussels across the American Great Lakes has transformed the supply of phosphorus - a key biological nutrient - to the ecosystem, according to research published this week in PNAS. (2021-01-26)

Astronomers estimate Titan's largest sea is 1,000-feet deep
Far below the gaseous atmospheric shroud on Saturn's largest moon, Titan, lies Kraken Mare, a sea of liquid methane. Cornell University astronomers have estimated that sea to be at least 1,000-feet deep near its center - enough room for a potential robotic submarine to explore. (2021-01-20)

World's largest lakes reveal climate change trends
Sixteen years of remote sensing data reveals that in Earth's largest freshwater lakes, climate change influences carbon fixation trends. (2021-01-20)

This Great Lakes fish may have evolved to see like its ocean ancestors did
In the dark waters of Lake Superior, a fish species adapted to regain a genetic trait that may have helped its ancient ancestors see in the ocean, a study finds. ''Evolution is often thought of as a one-way process, at least over deep time, but in this example, over 175 million years, we have this reversal back to a much earlier ancestral state,'' one of the researchers says. (2021-01-20)

Genetic rewiring behind spectacular evolutionary explosion in East Africa
Genetic rewiring could have driven an evolutionary explosion in the shapes, sizes and adaptations of cichlid fish, in East Africa's answer to Darwin's Galapagos finches. (2021-01-19)

Faeces and algorithms: Artificial Intelligence to map our intestinal bacteria
The intestines and their bacteria are sometimes called our 'second brain', but studying these bacteria in their natural environment is difficult. Now researchers from the University of Copenhagen have developed a method that uses artificial intelligence to map intestinal bacteria using faeces. The researchers thus hope to gain more knowledge of the role played by these bacteria in various diseases. (2021-01-14)

Northern lakes at risk of losing ice cover permanently, impacting drinking water
Close to 5,700 lakes in the Northern Hemisphere may permanently lose ice cover this century, 179 of them in the next decade, at current greenhouse gas emissions, despite a possible polar vortex this year, researchers at York University have found. Those lakes include large bays in some of the deepest of the Great Lakes, such as Lake Superior and Lake Michigan, which could permanently become ice free by 2055. (2021-01-13)

DNA in water used to uncover genes of invasive fish
In a proof-of-principle study, Cornell researchers describe a new technique in which they analyzed environmental DNA - or eDNA - from water samples in Cayuga Lake to gather nuanced information about the presence of these invasive fish. (2021-01-12)

Climate crisis is causing lakes to shrink
Climate change is impacting not only the oceans, but also large inland lakes. As the world's largest lake, the Caspian Sea is a perfect example of how a body of water can and will change. In an article in the Nature journal Communications Earth & Environment, Dr. Matthias Prange of MARUM - Center for Marine Environmental Sciences at the University of Bremen, and his colleagues discuss the possible ecological, political and economic consequences, as well as viable solutions. (2020-12-23)

Study suggests great earthquakes as cause of Arctic warming
A researcher from MIPT has proposed a new explanation for the Arctic's rapid warming. In his recent paper in Geosciences, he suggests that the warming could have been triggered by a series of great earthquakes (2020-12-23)

OU-led study focuses on evolutionary determinism and convergence in marine fishes
The stickleback is a well-studied system in freshwater lakes, but the evolution of convergent morphotypes that occupy different positions in the water column in marine environments is less clear. An international group of scientists led by researchers at the University of Oklahoma decided to test the extent to which independent transitions from bottom to midwater habitats in marine fish species from different oceanic basins resulted in the recurrent evolution of body shape morphologies, comparable to those documented in sticklebacks. (2020-12-15)

Using water fleas, UTA researchers investigate adaptive evolution
Researchers from The University of Texas at Arlington resurrected the preserved eggs of a shrimp-like crustacean to examine long-standing questions about adaptive evolution, reporting the results in the journal Proceedings of the National Academy of Science. (2020-12-11)

Low oxygen levels in lakes and reservoirs may accelerate global change
Ultimately, this study is crucial for how researchers, and the general public, think about how freshwater ecosystems produce greenhouse gases in the future. With low oxygen concentrations increasing in lakes and reservoirs across the world, these ecosystems will produce higher concentrations of methane in the future, leading to more global warming. (2020-12-10)

Study connects diabetes, air pollution to interstitial lung disease
People with pre-diabetes or diabetes who live in ozone-polluted areas may have an increased risk for an irreversible disease with a high mortality rate. These findings are especially important today in the midst of the COVID-19 pandemic, where there is a heightened concern for the convergence of health effects from air pollution and SARS-CoV-2 in susceptible populations. (2020-12-09)

Nebraska anglers are creatures of habit
Fishing behavior of Nebraska anglers may be more predictable than previously thought, says a new paper published in the Ecological Society of America's journal Ecological Applications. Seven fishing spots across the state were visited by loyal communities of anglers throughout the year, with little variation from spring to fall in the home ZIP codes of visitors. (2020-12-09)

Best region for life on Mars was far below surface
The most habitable region for life on Mars would have been up to several miles below its surface, likely due to subsurface melting of thick ice sheets fueled by geothermal heat, a Rutgers-led study concludes. The study, published in the journal Science Advances, may help resolve what's known as the faint young sun paradox - a lingering key question in Mars science. (2020-12-02)

Watching the Arctic thaw in fast-forward
The frozen permafrost in the Arctic is thawing on an alarming scale. By analysing an annual record of satellite images, researchers at the Alfred Wegener Institute have now confirmed these findings: thermokarst lakes in Alaska are draining one by one because warmer and wetter conditions cause deeper thaw, effectively weakening frozen ground as a barrier around lakes. In the season 2017/2018, lake drainage was observed on a scale that scientists didn't expect until the end of the century. (2020-12-01)

Study reveals new findings on nature's UV sunscreens
Swansea University research has provided a new insight into the behaviour of nature's own UV sunscreens when they are exposed to other parts of the light spectrum. (2020-11-30)

Mine ponds amplify mercury risks in Peru's Amazon
The proliferation of pits and ponds created in recent years by miners digging for gold in Peru's Amazon has altered the landscape and amplified the risk of mercury poisoning, a new study shows. In some watersheds, there's been a 670% increase in land area covered by abandoned mining pits that have filled in with water. Low-oxygen conditions in these ponds accelerate the conversion of submerged mercury, a leftover from the mining, into highly toxic methylmercury. (2020-11-27)

Irreversible hotter and drier climate over inner East Asia
Researchers warn that heatwaves and concurrent droughts of Mongolia's semi-arid plateau have increased significantly during the past two decades, with troubling implications for the future. The change also has ramifications for atmospheric conditions across the Northern Hemisphere. (2020-11-26)

Identical evolution of isolated organisms
Palaeontologists at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and the University of Calgary in Canada have provided new proof of parallel evolution: conodonts, early vertebrates from the Permian period, adapted to new habitats in almost identical ways despite living in different geographical regions. The researchers were able to prove that this was the case using fossil teeth found in different geographical locations. (2020-11-23)

Climate change presents new challenges for the drinking water supply
Rising temperatures in Germany's largest drinking water reservoir present new challenges for the drinking water supply. According to a group of UFZ researchers, the impacts of this increase can be alleviated by mitigating climate change and applying new management strategies. (2020-11-23)

New clues shed light on importance of Earth's ice sheets
Researchers examining subglacial waters both from Antarctica and Greenland found that these waters have higher concentrations of important, life-sustaining elements than previously thought, answering a big unknown for scientists seeking to understand the Earth's geochemical processes. (2020-11-23)

A rich source of nutrients under the Earth's ice sheets
Trace elements such as iron and zinc are essential micronutrients for all kinds of organisms. Below ice sheets, which cover around ten percent of the Earth's land surface, larger quantities of these substances are mobilised than previously assumed. This is shown by new data from Greenland and Antarctica, which were collected and analysed by an international research team led by Jon Hawkings from the GFZ German Research Centre for Geosciences and Florida State University (USA). (2020-11-23)

Implantation of an S-ICD in a patient with a DDD pacemaker and congenitally corrected transposition
Implantation of an S-ICD in a Patient with a DDD Pacemaker and Congenitally Corrected Transposition of the Great Arteries. In a new publication from Cardiovascular Innovations and Applications; DOI, Yu Zhang, Wen-Long Dai, Can-Can Lin, Qiao-Yuan Li and Cheng-Jun Guo from Beijing Anzhen Hospital, Capital Medical University, Beijing, China consider implantation of an S-ICD in a patient with a DDD pacemaker and congenitally corrected transposition of the great arteries. (2020-11-19)

Cichlid fishes from African Lake Tanganyika shed light on how organismal diversity arises
Lake Tanganyika in Africa is a true hotspot of organismal diversity. Approximately 240 species of cichlid fishes have evolved in this lake in less than 10 million years. A research team from the University of Basel has investigated this phenomenon of ''explosive speciation'' and provides new insights into the origins of biological diversity, as they report in the journal Nature. (2020-11-18)

Teton range glacial ice may have persisted in a dormant state during early Holocene warming
A continuous 10,000-year record of alpine glacier fluctuations in Wyoming's Teton Range suggests that some glacial ice in the western US persisted in a reduced, essentially dormant state during periods of early Holocene warming. The findings challenge the paradigm that all Rocky Mountain glaciers completely disappeared during these warm, dry conditions, instead. (2020-11-18)

Dietary overlap of birds, bats and dragonflies disadvantageous in insect decline
According to a new Finnish study, different groups of insectivores compete for the same type of food. Researchers of the University of Turku, Finland, and the Finnish Museum of Natural History made a discovery by comparing birds, bats and dragonflies that forage in the same area in Southwest Finland. These very distantly related predators consumed the same insect groups. The results shed new light on the decline in insect populations. (2020-11-10)

Mystery of glacial lake floods solved
A long-standing mystery in the study of glaciers was recently and serendipitously solved by a team led by University of Hawai'i at Mānoa. A trigger was identified for some of the largest floods on Earth--those emerging suddenly and unpredictably from beneath glaciers or ice caps. (2020-11-06)

Species more likely to die out with rapid climate changes
The great tit and other birds can adapt to changes in their food supply as a result of climate change, but they run into trouble if the changes happen too quickly. (2020-11-05)

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