Download or read book Drought and Aquatic Ecosystems written by P. Sam Lake and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Droughts are a major hazard to both natural and human-dominated environments and those, especially of long duration and high intensity, can be highly damaging and leave long-lasting effects. This book describes the climatic conditions that give rise to droughts, and their various forms and chief attributes. Past droughts are described including those that had severe impacts on human societies. As a disturbance, droughts can be thought of as “ramps” in that they usually build slowly and take time to become evident. As precipitation is reduced, flows from catchments into aquatic systems decline. As water declines in water bodies, ecological processes are changed and the biota can be drastically reduced, though species and populations may survive by using refuges. Recovery from drought varies in both rates and in degrees of completeness and may be a function of both refuge availability and connectivity. For the first time, this book reviews the available rather scattered literature on the impacts of drought on the flora, fauna and ecological processes of aquatic ecosystems ranging from small ponds to lakes and from streams to estuaries. The effects of drought on the biota of standing waters and flowing waters and of temporary waters and perennial systems are described and compared. In addition, the ways in which human activity can exacerbate droughts are outlined. In many parts of the world especially in the mid latitudes, global warming may result in increases in the duration and intensity of droughts. Drought and Aquatic Ecosystems is essential reading for freshwater ecologists, water resource managers and advanced students.

Download or read book Responses of Lakes to Drought written by Katherine Emerson Webster and published by . This book was released on 1998 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Effects of Water level Fluctuations in Lakes written by Karl M. Wantzen and published by Springer Science & Business Media. This book was released on 2009-05-06 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Environmental Change and Response in East African Lakes written by J.T. Lehman and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea for this book was born at the June 1996 meeting of the IDEAL Steering Committee in Milwaukee, Wisconsin. We had just completed a successful and stimulating special symposium during the annual meeting of the American Society for Limnology and Oceanography, and enthusiasm was running high for the production of a volume that could assemble in one place the scientific findings that were starting to emerge from East Africa. IDEAL, an International Decade for the East African Lakes, had ended one round of field investigations, many of which had been centered on Lake Victoria. As the climatologists, geologists, paleolimnologists, and biologists displayed their results and debated interpretations, it appeared that some paradigms were shifting, and that new explanations of climate history and modem processes were taking shape. The Steering Committee endorsed the production of a volume that would draw together the different research results that were emerging and which would be representative of the scope of science issues that exist within IDEAL. This book follows in the spirit of The Limnology, Climatology, and Paleoclimatology of the East African Lakes, published in 1996, but has a somewhat different purpose. The previous publication also included original science results, but it was conceived to review the state of knowledge, identify critical problems, and point to new paths of inquiry. It accompanied the development of our first Science and Implementation Plan for the East African Lakes.

Download or read book Estimating the Economic Impacts of Recreation Response to Resource Management Alternatives written by and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salinity and Hydrology of Closed Lakes written by Walter Basil Langbein and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the long-term balance between input and loss of salts in closed lakes.

Download or read book Diversity and Eco Physiological Responses of Aquatic Plants written by Chunhua Liu and published by Frontiers Media SA. This book was released on 2020-06-16 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquatic plants refer to a diverse group of aquatic photosynthetic organisms large enough to be seem with the naked eye, and the vegetative parts of which actively grow either permanently or periodically (for at least several weeks each year) submerged below, floating on, or growing up through the water surface. These include aquatic vascular plants, aquatic mosses and some larger algae. Aquatic plants are grouped into life forms, each of which relates differently to limiting factors and has distinct ecological functions in aquatic ecosystems. Life form groups include emergent macrophytes (plants that are rooted in sediment or soils that are periodically inundated, with all other structures extending into the air), floating-leaved macrophytes (rooted plants with leaves that float on the water surface), submersed macrophytes (rooted plants growing completely submerged), free submerged macrophytes (which are not rooted but attached to other macrophytes or submerged structures) and free-floating macrophytes (plants that float on the water surface). Aquatic plants play an important role in the structure and function of aquatic ecosystems by altering water movement regimes, providing shelter and refuge and serving as a food source. In addition, aquatic plants produce large standing crops which can also stabilize sediments, accumulate large amounts of nutrients thus improving water healthy. Thus, because of their ecological role, aquatic plants are an important component of aquatic ecosystems. Aquatic plants are very vulnerable to human activities and global changes, and many species of the plants had become endangered in the past several decades due to habitat loss, flooding, damming, over foraging, biological invasion and eutrophication, which might not be halted but enforced in the future when more extreme weathers coincide with enhanced human activities.

Download or read book Wolf Creek Dam Lake Cumberland Emergency Measures in Response to Seepage written by and published by . This book was released on 2007 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Three Populus Species to Drought written by Terry F. Strong and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Climate Change 2001 Mitigation written by Bert Metz and published by Cambridge University Press. This book was released on 2001-07-12 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some issues addressed in this Working Group III volume are mitigation of greenhouse gas emissions, managing biological carbon reservoirs, geo-engineering, costing methods, and decision-making frameworks.

Download or read book Advances in Climate Change and Global Warming Research and Application 2012 Edition written by and published by ScholarlyEditions. This book was released on 2012-12-26 with total page 3055 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Climate Change and Global Warming Research and Application / 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Climate Change and Global Warming. The editors have built Advances in Climate Change and Global Warming Research and Application / 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Climate Change and Global Warming in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Advances in Climate Change and Global Warming Research and Application / 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Disaster Mitigation Preparedness and Response written by United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment and published by . This book was released on 1998 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Response to Climate Change written by Robert G. Watts and published by CRC Press. This book was released on 2013-03-22 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: A clear, concise discussion of today's hottest topics in climate change, including adapting to climate change and geo-engineering to mitigate the effects of change, Engineering Response to Climate Change, Second Edition takes on the tough questions of what to do and offers real solutions to the practical problems caused by radical changes in the Ea

Download or read book Evaluation of the FAO response to the crisis in the Lake Chad Basin 2015 2018 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2021-01-28 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forty-nine million people live in the Lake Chad region, exploiting its rich natural resources and relatively constant supply of water, fodder and fertile land all year round. The area used to be a food production hub, with local markets supplying produce to Cameroon, Chad, the Niger and Nigeria. However, poor natural resource management, poor coordination across the different countries of the region, and the widespread impact of climate change have contributed to the significant deterioration of the Lake’s natural ecosystem capacity. Agricultural soils and pastures have been widely degraded, leading to a huge reduction in food productivity and, thus, job opportunities, especially for the youth living in rural areas who account for a high percentage of the population. Conflicts and tensions have created a conducive context for young people in search of income and opportunities to join the Boko Haram terrorist movement originated in Nigeria. This evaluation was conducted to address FAO’s response to the Lake Chad Basin crisis, including interventions conducted in 2015‒2018, as FAO published the Lake Chad Basin Crisis Response Strategy (2017–2019) to address the needs of the identified 6.9 million people affected by soaring food insecurity in the Lake Chad Basin in early 2017. The objectives of this evaluation were to analyse FAO’s responses to the crisis at operating level, with a focus on efficiency, effectiveness and sustainability, while assessing the relevance and consistency of the regional approach from a strategic perspective. The evaluation team visited many of the areas concerned, and at the end of each visit they organized a debriefing session with the respective FAO country team to share information gathered and collect complementary data and analysis to inform its deliberations. This helped to ensure transparency in the data collection process and to maximize the learning process. For FAO to support the food security and nutrition of communities in the Lake Chad region effectively, a regional strategy focused on supporting the resilience of communities is relevant and appropriate. Complementary to FAO’s country-based programmes, a regional strategy bears the potential to devise interventions that adapt to the cross-border nature of issues that each country faces and would allow supporting a more cohesive and collaborative way of working. Based on the Regional Response Strategy (2017–2019), FAO should revise its strategy and approach by incorporating governmental objectives, and translate it into an operational action plan, in line with other partners’ strategies in the region.

Download or read book Response of Lake Trout and Rainbow Trout to Dietary Cellulose written by Hugh A Poston and published by . This book was released on 1986 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Drought Prediction Preparation and Response written by United States. Congress. House. Committee on Science and published by . This book was released on 2002 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Long term Dynamics of Lakes in the Landscape written by John J. Magnuson and published by Oxford University Press, USA. This book was released on 2006 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Two whole lake experiments are describes : experimental acidification at Little Rock Lake and the response of Lake Mendota to a natural experiment involving agricultural and urban development. Readers will learn the benefits of doing long-term ecological research, and limnologists will discover the richness of new information derived from studying suites of neighboring lakes across time."--BOOK JACKET.