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 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 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 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.

Download or read book Euston Lakes Drought Monitoring written by and published by . This book was released on 2010 with total page 31 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 Detecting and predicting the responses of lakes to global climate change written by U. Gaedke and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surviving the Drought written by and published by . This book was released on 1989 with total page 40 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 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 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 Lake Tohopekaliga Extreme Drawdown and Habitat Enhancement Project Osceola County written by and published by . This book was released on 2002 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book From Disaster Response to Risk Management written by Linda C. Botterill and published by Springer Science & Business Media. This book was released on 2005-06-15 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: An academically focused collection of papers highlighting the successes and challenges of a move from disaster to risk management in responding to drought. The book passes on the experiences gained from Australia’s trail-blazing new policy, introduced in 1992.

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Climate Variability and Ecosystem Response at Long Term Ecological Research Sites written by David Greenland and published by Oxford University Press. This book was released on 2003-10-09 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the Long-Term Ecological Research Network Series would present the work that has been done and the understanding and database that have been developed by work on climate change done at all the LTER sites. Global climate change is a central issue facing the world, which is being worked on by a very large number of scientists across a wide range of fields. The LTER sites hold some of the best available data measuring long term impacts and changes in the environment, and the research done at these sites has not previously been made widely available to the broader climate change research community. This book should appeal reasonably widely outside the ecological community, and because it pulls together information from all 20 research sites, it should capture the interest of virtually the entire LTER research community.

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 Lake Redding Power Project No 2828 Application for License B1 Response to Notice of Deficiency written by and published by . This book was released on 1982 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: