Download or read book Using Leaf Litter Breakdown to Assess the Effects of Mountaintop Removal Mining on Headwater Streams in Eastern Kentucky written by David Allen Word and published by . This book was released on 2007 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leaf Litter Decomposition in Restored Stream wetland Complexes Compared to Forested Headwater Streams written by Kelly Anne Love and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leaf litter breakdown rates are frequently employed as functional indicators of health in both terrestrial and aquatic ecosystems. I deployed coarse mesh litter bags to measure organic matter processing during summer in three forested stream channels and three stream-wetland complexes constructed as part of a floodplain reconnection restoration project in western Pennsylvania. I predicted that in stream-wetland complexes, leaf litter breakdown would occur at a faster rate based on warmer temperatures, higher nutrient availability, and sunlight from the open canopy. Contrary to our expectations, litter decomposition over 56 days occurred at a slower rate at the stream-wetland complexes compared to the forested stream channels. Water chemistry, temperature, and the composition of macroinvertebrate communities in leaf litter bags differed between forested stream channels and stream-wetland complexes but was not correlated with leaf breakdown rates. I was unable to determine the role of Chl a on leaf litter breakdown in stream- wetland complexes due to the shade station not providing consistent shade. Macroinvertebrate communities differed significant between the forested unrestored sites and the stream-wetland complexes. The water chemistry indicated that the habitat was suitable for macroinvertebrates at all sites and nutrient availability was not significantly different.

Download or read book Effect of strip mining on water quality in small streams in eastern Kentucky 1967 1975 written by Kenneth L. Dyer and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2005 Joint Assembly written by American Geophysical Union. Joint Assembly and published by . This book was released on 2005 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Mountaintop Mines and Valley Fills on Aquatic Ecosystems of the Central Appalachian Coalfields written by and published by . This book was released on 2009 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report assesses the state of the science on the environmental impacts of mountaintop mines and valley fills (MTM-VD) on streams in the Central Appalachian Coalfields. These coalfields cover about 48,000 square kilometers (12 million acres) in West Virginia, Kentucky, Virginia and Tennessee, USA. Our review focused on the impacts of mountaintop removal coal mining, which, as its name suggests, involves removing all or some portion of the top of a mountain or ridge to expose and mine one or more coal seams. The excess overburden is disposed of in constructed fills in small valleys or hollow adjacent to the mining site. Our conclusions, based on evidence from the peer-reviewed literature and from thh U.S. Environmental Protection Agency's Programmatic Environmental Impact Statement released in 2005, are that MTM-VF lead directly to five principal alterations of stream ecosystems: (1) springs, intermittent streams, and small perennial streams are permanently lost with the removal of the mountain and from burial under fill, (2) concentrations of major chemical ions are persistently elevated downstream, (3) degraded water quality reaches levels that are acutely lethal to standard laboratory test organism, (4) seleminum concentrations are elevated, reaching concentrations that have caused toxic effects in fish and birds and (5) macroinvertebrate and fish communities are consistentl and significantly degraded.

Download or read book The Effects of Mountaintop Removal Mining and Valley Fills on Stream Salamander Communities written by Brenee̕ Lynn Muncy and published by . This book was released on 2014 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leaf Litter Decomposition in Streams Subjected to Global Change written by Florent Rossi and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human activity through industry, urbanization and agriculture, has led to the production and release of a large amounts of chemical compounds (including pesticides and pharmaceuticals) into the biosphere. One of the problematic related to the xenobiotic compounds fate is their transfer to aquatic ecosystems and the alteration of diversity and activity of microbial communities. Microbial communities associated with immersed leaf-litter can be impacted by these compounds, and in turn, alter global processes such as the carbon and nutrient cycling in the stream ecosystem. Accordingly, this thesis work aims to assess the effects of realistic chemical contamination on microbial leaf-litter decomposition process in streams.The first chapter of this thesis was focused on the comparison of microbial decomposition activity in alder leaves in six watersheds presenting different land uses (agricultural, urbanized, forested) over four seasons (spring, summer, autumn, winter). The effect of the gradient of contamination on microbial organic matter processing from upstream to downstream sections in each watershed was also assessed. Monitoring revealed that microbial decomposition of leaves was slightly higher in contaminated watersheds (agricultural and urbanized) in comparison with control ones (forested), probably because of the compensation effect by nutrients over xenobiotics. However, this compensation mechanism was partial since fungal biomass accumulated in leaves was greatly reduced in contaminated watersheds. Overall, this highlights microbial communities being more efficient for leaf decomposition in polluted watersheds than in the less contaminated ones, which is probably explained by changes in microbial community structure.The second chapter of this thesis aimed to evaluate in vitro the specific interactions between nutrients (nitrogen and phosphorus) and pesticides (herbicide and fungicide, alone or in mixture) exposure on microbial communities during leaf-litter decomposition. High nutrient concentrations (eutrophic conditions) tended to exacerbate the effects of pesticides on leaf decomposition rates suggesting that the compensatory mechanism of nutrients over pesticides observed in the previous part is probably concentration dependent and does not always apply to aquatic microbial communities. Moreover, a stimulation in laccase activity was observed when microbial communities were exposed to the fungicide, suggesting a role of this enzyme in detoxification mechanisms. However, the fact that such stimulation was not observed when exposed to the mixture of both pesticides (herbicide and fungicide) suggest that the interaction between these two molecules impaired the ability of microbial communities to display properstress response. These results constitute the first evidence of the potential interaction between an herbicide and a fungicide on leaf-associated microbial communities functioning. (...).

Download or read book The Effect of Environmental Patchiness on the Breakdown of Leaf Litter in a Woodland Stream written by Seth Robert Reice and published by . This book was released on 1973 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Latitudinal Gradients in Leaf Litter Decomposition in Streams written by John G. Irons and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogeology and Hydrogeochemistry of a Large Mountaintop removal Coal Mine in Eastern Kentucky written by Dennis H. Cumbie and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leaf Litter Decomposition as a Functional Assessment of a Natural Stream Channel Restoration Project written by Jennifer Amy Gentry and published by . This book was released on 2007 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Environmental Patchiness on the Breakdown of Leaf Litter in a Woodland Stream written by Sem Robert Reice and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Politics of Environmental Reform written by Marc Karnis Landy and published by Routledge. This book was released on 2016-03-17 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Politics of Environmental Reform demonstrates how environmental laws affect local governments with Kentucky strip mining as its core example. Originally published in 1976, Landy’s research into environmental legislation in a state whose economy relies on the coal industry can easily be applied to all forms of government shedding light on issues such as policy initiation, federal-state relations and regulatory performance. This title will be of interest to students of Environmental Studies and professionals.

Download or read book Cumulative Effects Modeling in the Mountaintop Removal Mining Region of the Central Appalachians written by Eric Richard Merriam and published by . This book was released on 2015 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Coal Mining Activities on the Water Quality of Streams in the Western and Eastern Coalfields of Kentucky written by Kentucky Natural Resources and Environmental Protection Cabinet. Division of Water and published by . This book was released on 1981 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Evaluation of Leaf Litter Decomposition as a Tool for Assessing the Impact of Water Abstraction on River Integrity written by Simone M. J. H. Baptiste and published by . This book was released on 1999 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Leaf Litter Breakdown Rates in Streams by Litter Quality written by O. Harth Heleno and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: