Multiyear Synthesis of Limnological Data from 1993 to 2001 for the Long Term Resource Monitoring Program PDF Download
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Author: Jeffrey N. Houser
Publisher:
ISBN:
Category : Environmental monitoring
Languages : en
Pages : 59
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Book Description
Author: Jeffrey N. Houser
Publisher:
ISBN:
Category : Environmental monitoring
Languages : en
Pages : 59
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Book Description
Author: Ismar Biberovic
Publisher:
ISBN:
Category : Acidification
Languages : en
Pages : 0
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Book Description
Lakes are excellent early indicators of environmental change on a landscape scale. Due to their connectedness in the landscape, any alteration of land-cover extends beyond a single watershed and can only be amplified by the effects of climate change. These processes can reflect differently across lakes of various characteristics, however, combined, they can leave a lasting impact on biogeochemical processes of a lake, resulting in profound effects on biological communities residing in it. Lake sediments are terrific archives that integrate and preserve this evidence, which then allows us to investigate the extent to which a lake has changed given its current state. Akin to regional patterns, Vermont lakes have been undergoing notable increases in nutrient levels, browning, and surface water warming. Understanding changes that took place in Vermont lakes over the last ~200 years requires a proxy-based approach.We analyzed top and bottom sediment samples from over a hundred Vermont lakes to be able to address the anthropogenic impact more confidently on these lakes. In our transfer-function development, we found that total phosphorus has an important impact on modern diatom communities in Vermont lakes, however, both TP and pH show promise in being used as a part of the Vermont-specific transfer function. A reconstructed pH for Beaver Pond is congruent with the idea that the biological recovery often lags behind chemical recovery. Furthermore, our exploration of the diatom-community differences between past and modern communities revealed that this approach should be used with caution if applied across lakes of various differing depths. We found that a significant difference between the two communities exits only in deep lakes. Indicator species of change in modern lake sediments were associated mainly with climate-related stressors, ice cover and water column stability, while some species indicated nutrient enrichment. In conclusion, our results highlight the importance of understanding the environmental-gradient dependent response of lakes to the interaction of multiple stressors.
Author: Vishwas B. Sakhare
Publisher:
ISBN: 9789351240921
Category : Technology & Engineering
Languages : en
Pages : 286
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Book Description
Limnology is conventionally divided into two groups-lentic, standing or still water habits and lotic or running water habitats. The lotic follows a gradient from springs to mountain brooks to streams to rivers. The lentic involves a gradient from lakes to ponds to bogs, swamps and marshes. F.A. Forel (1841-1912), professor in the University of Lausanne, Switzerland recognized the real biological opportunity in the lake investigations and by his work become the founder of modern Limnology. Chumly (1910) listed 116 limnological papers published by Forel during the period 1868-1909 which occupy a significant place in the history of limnology. Forel's investigations focused on the lake Geneva. Now-a-day Limnology is defined as study of biological productivity of inland waters such as stagnant water bodies like lakes, ponds, pools, puddles, reservoirs, tanks etc and flowing waters such as rivers, tributaries, brooks, creeks, canals etc. It is a multifarious subject embracing such diverse fields on Physics, Chemistry, Geology, Zoology, Botany etc. Considering the plethora of problems, Department of Zoology, Yogeshwari Mahavidyalaya, Ambajogai in collaboration with Indian Association of Aquatic Biologists, Hyderabad organized a National Conference on Current Perspectives in Limnology, during 25th-26th December, 2009, at Ambajogai (Maharashtra).The conference had attracted participants from many parts of the country and also from abroad. This volume is based on the proceedings of the conference.It is hoped that the contents of this volume would provide a new orientation and impetus to freshwater fisheries development in India and offer better inputs for scientific management and utilization of the resources on a long term sustainable basis, contributing to food security, economic viability of operations, ecological and environmental safety. The present book is compendium of recent original research in the field of limnology. It is an assemblage of up-to-date information of rapid advances and developments taking place in the field of limnolgy. The book is a unique compilation of 40 chapters which discusses exhaustive studies on planktonology, physico-chemical environment, fisheries, toxicology, physiology etc. With its application oriented and interdisciplinary approach, the book would be immensely useful to students, teachers, researchers, scientists, policymakers, environmental lawyers and others interested in limnology
Author: Gary L. Larson
Publisher: Forgotten Books
ISBN: 9780364659601
Category : Business & Economics
Languages : en
Pages : 182
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Book Description
Excerpt from Crater Lake Limnological Studies: 1986 Annual Report Results from limnological studies of Crater Lake between 1978 and 1981 suggested that the clarity of the lake was declining and that the species composition and vertical distribution of the phytoplankton had changed when compared to studies from 1913 to 1969. Workshops were convened in early 1982 to review the data, and it was concluded that the information base was insufficient to determine if the lake had changed. A limnological study was initiated in 1982 by the National Park Service to increase the data base on the lake. That fall, Congress mandated (public Law 97-250) a 10-year limnological study of Crater Lake. The goals were to (1) develop a limnological data base for comparison with future conditions; (2) develop a better understanding of physical, chemical, and biological components of the lake system; and (3) establish a long-term monitoring program to examine the lake characteristics through time. An important aspect of the study was to determine if the lake had changed, and if so, identify the cause(s) and recommend mitigation measures if anthropogenic in nature. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251306079
Category : Technology & Engineering
Languages : en
Pages : 654
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Book Description
This report indicates that climate change will significantly affect the availability and trade of fish products, especially for those countries most dependent on the sector, and calls for effective adaptation and mitigation actions encompassing food production.
Author: Jacob Kalff
Publisher: Benjamin-Cummings Publishing Company
ISBN:
Category : Nature
Languages : en
Pages : 616
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Book Description
For senior-level undergraduate or graduate courses in limnology or aquatic management in the Life Sciences and Biology departments. Written from an ecosystem perspective, this user-friendly and thorough text discusses events that happen below the waterline of lakes, rivers, and wetlands. The text links them back to the attributers of the drainage basins, the overlying atmosphere and climate, which have a major impact on inland waters and their biota. It also contains a large number of easy-to-comprehend figures and tables that reinforce the written material and provide evidence for statements made.
Author: Reinhard Pienitz
Publisher: Springer Science & Business Media
ISBN: 1402021259
Category : Science
Languages : en
Pages : 579
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Book Description
Concerns about the effects of global climate change have focused attention on the vulnerability of circumpolar regions. This book offers a synthesis of the spectrum of techniques available for generating long-term environmental records from circumpolar lakes.
Author: Susan Holdsworth
Publisher: DIANE Publishing
ISBN: 1437941311
Category : Nature
Languages : en
Pages : 10
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Book Description
This is a print on demand edition of a hard to find publication. Report of a survey conducted by the EPA and its state and tribal partners of the nation's lakes, ponds and reservoirs. This National Lakes Assessment is designed to provide statistically valid regional and national estimates of the condition of lakes. It uses a probability-based sampling design to represent the condition of all lakes in similar regions sharing similar ecological characteristics. Consistent sampling and analytical procedures ensure that the results can be compared across the country. The National Lakes Assessment helps build state and tribal capacity for monitoring and assessment and promotes collaboration across jurisdictional boundaries in the assessment of water quality. Charts and tables.
Author: Karl M. Wantzen
Publisher: Springer Science & Business Media
ISBN: 1402091923
Category : Technology & Engineering
Languages : en
Pages : 184
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Book Description
Most aquatic ecosystems have variable water levels. These water-level fluctuations (WLF) have multiple effects on the organisms above and below the waterline. Natural WLF patterns in lakes guarantee both productivity and biodiversity, while untimely floods and droughts may have negative effects. Human impacts on WLF have led to a stabilization of the water levels of many lakes by hydraulic regulation, untimely drawdown due to water use, or floods due to water release from hydropower plants in the catchments. This book provides a first review in this field. It presents selected papers on the ecological effects of WLF in lakes, resulting from a workshop at the University of Konstanz in winter 2005. Issues addressed here include the extent of WLF, and analyses of their effects on different groups of biota from microorganisms to vertebrates. Applied issues include recommendations for the hydrological management of regulated lakes to reduce negative impacts, and a conceptual framework is delivered by an extension of the floodpulse concept for lakes. Current impacts on water use, including increasing demands on drinking and irrigation water, hydropower etc., and climate change effects on WLF make this book an essential resource for aquatic ecologists, engineers, and decision-makers dealing with the management of lake ecosystems and their catchments.
Author: K. Ramesh Reddy
Publisher: CRC Press
ISBN: 0429531931
Category : Science
Languages : en
Pages : 926
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Book Description
The globally important nature of wetland ecosystems has led to their increased protection and restoration as well as their use in engineered systems. Underpinning the beneficial functions of wetlands are a unique suite of physical, chemical, and biological processes that regulate elemental cycling in soils and the water column. This book provides an in-depth coverage of these wetland biogeochemical processes related to the cycling of macroelements including carbon, nitrogen, phosphorus, and sulfur, secondary and trace elements, and toxic organic compounds. In this synthesis, the authors combine more than 100 years of experience studying wetlands and biogeochemistry to look inside the black box of elemental transformations in wetland ecosystems. This new edition is updated throughout to include more topics and provide an integrated view of the coupled nature of biogeochemical cycles in wetland systems. The influence of the elemental cycles is discussed at a range of scales in the context of environmental change including climate, sea level rise, and water quality. Frequent examples of key methods and major case studies are also included to help the reader extend the basic theories for application in their own system. Some of the major topics discussed are: Flooded soil and sediment characteristics Aerobic-anaerobic interfaces Redox chemistry in flooded soil and sediment systems Anaerobic microbial metabolism Plant adaptations to reducing conditions Regulators of organic matter decomposition and accretion Major nutrient sources and sinks Greenhouse gas production and emission Elemental flux processes Remediation of contaminated soils and sediments Coupled C-N-P-S processes Consequences of environmental change in wetlands# The book provides the foundation for a basic understanding of key biogeochemical processes and its applications to solve real world problems. It is detailed, but also assists the reader with box inserts, artfully designed diagrams, and summary tables all supported by numerous current references. This book is an excellent resource for senior undergraduates and graduate students studying ecosystem biogeochemistry with a focus in wetlands and aquatic systems.
