Book — xxxix, 524 pages, 8 unnumbered pages of plates : illustrations ; 26 cm.
Part I Overview Introduction Coastal Ecosystems Ecosystem Research Studies in the Northeast Gulf of Mexico Methods Part II Long-Term Habit Conditions Regional Background Rainfall and River Flows: Long-Term Changes Nutrient Loading: Natural versus Anthropogenic Inputs Dredged Passes to the Gulf: Comparative Effects Methods Stratification Comparisons: Dissolved Oxygen Biological Impacts Part III Trophic Response to Long-Term Climate Changes Climatological Impacts on Gulf Estuaries Apalachee Bay Background Rainfall and River Flows Climatological Conditions and Nutrient Loading Trends of Water Quality Climatic Effects on Phytoplankton Submerged Aquatic Vegetation Fishes Invertebrates Conclusions Apalachicola Estuary Background River-Bay Linkages Population Distributions in the Bay Rainfall and River Flows Oysters Fishes and Invertebrates Long-Term Drought Effects on Bay Fisheries Conclusions Perdido Estuary Background Physical Structure of Perdido Estuary River Flows Salinity Stratification and Dissolved Oxygen Effects of Climate on Nutrient Loading Nutrient Limitation Experiments Climatological Control of Plankton Blooms Secondary Productivity and Trophic Organization Mediomastus ambiseta Streblospio benedicti Callinectes sapidus Leiostomus xanthurus Micropogonias undulatus Rangia cuneata Conclusions Part IV Impacts of Anthropogenic Nutrient Loading Estuarine Response to Urban Nutrient Loading Choctawhatchee Estuary Background River Flow and Nutrient Loading Salinity Stratification and Dissolved Oxygen Sediment and Water Quality Factors Plankton Distributions Infaunal Macroinvertebrates and Fishes Discussion Pensacola Estuary Background River Flows and Nutrient Loading Sediment and Water Quality Salinity Stratification and Dissolved Oxygen Chlorophyll a Plankton Assemblages and Blooms Animal Population Distribution and Trophic Organization Statistical Analyses Discussion Part V Comparative Analysis of Gulf Ecosystems Trophic Organization Interacting Processes Background Sediment Comparisons Salinity/Depth Relationships Comparison of FII Trophic Indices Apalachicola Model Part VI Information Dissemination Omission and Misrepresentation by Regional News Media Part VII Closing Conclusion Appendices Index.
(source: Nielsen Book Data)
Produced by a Leading Aquatic Scientist A narrative account of how estuaries around the world are being altered by human forces and human-induced global climate changes, Climate Change and Coastal Ecosystems: Long-Term Effects of Climate and Nutrient Loading on Trophic Organization chronicles a more than 40-year-old research effort conducted by Dr. Robert J. Livingston and his research team at Florida State University. Designed to evaluate system-level responses to natural and anthropogenic nutrient loading and long-term climate changes, the study focused on the northeast Gulf of Mexico river-bay systems, and concentrated on phytoplankton/benthic macrophyte productivity and associated food web organization. It addressed the changes of food web structure relative to long-term trends of climatological conditions, and was carried out using a combination of field-descriptive and experimental approaches. Details Climate Change, Climate Change Effects, and Eutrophication This book includes comparative analyses of how the trophic organization of different river-bay ecosystems responded to variations of both anthropogenic impacts and natural driving factors in space and time. It incorporates a climate database and evaluates the effects of climate change in the region. It also provides insights into the effects of nutrient loading and climate on the trophic organization of coastal systems in other global regions. * Presents research compiled from consistent field sampling methods and detailed taxonomic identifications over an extended period of study * Includes the methods and materials that the research team used to access the health and trophic organization of Florida's estuaries * Provides an up-to-date bibliography of estuarine publications and reports Based on a longitudinal study of anthropogenic and natural driving factors on river-estuarine systems in the northeast Gulf of Mexico, Climate Change and Coastal Ecosystems: Long-Term Effects of Climate and Nutrient Loading on Trophic Organization is useful as a reference for researchers working on riverine, estuarine, and coastal marine systems. (source: Nielsen Book Data)
Leiden, the Netherlands : CRC Press/Balkema, 2014.
Book — xix, 160 p. : col. ill. ; 24 cm
2. Eutrophication and nutrient release in urban areas of sub-Saharan Africa - a review
3. Using hydrochemical tracers to identify sources of nutrients in unsewered urban catchments
4. Nutrient pollution in shallow aquifers underlying pit latrines and domestic solid waste dumps in urban slums
5. Understanding the fate of sanitation-related nutrients in a shallow sandy aquifer below an urban slum area
6. Phosphorus transport and retention in a channel draining an urban tropical catchment with informal settlements 7.Conclusions, recommendations and future research needs.
(source: Nielsen Book Data)
Urban informal settlements or slums are growing rapidly in cities in sub-Saharan Africa. Most often, a sewer system is not present and the commonly-used low-cost onsite wastewater handling practices, typically pit latrines, are frequently unplanned, uncontrolled and inefficient. Consequently, most households dispose of their untreated or partially treated wastewater on-site, generating high loads of nutrients to groundwater and streams draining these areas. However, the fate of nutrients in urban slums is generally unknown. In excess, these nutrients can cause eutrophication in downstream water bodies. This book provides an understanding of the hydro-geochemical processes affecting the generation, fate and transport of nutrients (nitrogen and phosphorus) in a typical urban slum area in Kampala, Uganda. The approach used combined experimental and modeling techniques, using a large set of hydrochemical and geochemical data collected from shallow groundwater, drainage channels and precipitation. The results show that both nitrogen-containing acid precipitation and domestic wastewater from slum areas are important sources of nutrients in urban slum catchments. For nutrients leaching to groundwater, pit latrines retained over 80% of the nutrient mass input while the underlying alluvial sandy aquifer was also an effective sink of nutrients where nitrogen was removed by denitrification and anaerobic oxidation and phosphorus by adsorption to calcite. In surface water, nutrient attenuation processes are limited. This study argues that groundwater may not be important as regards to eutrophication implying that management interventions in slum areas should primarily focus on nutrients released into drainage channels. This research is of broad interest as urbanization is an ongoing trend and many developing countries lack proper sanitation systems. (source: Nielsen Book Data)