Nutrients and eutrophication in estuaries and coastal waters : proceedings of the 31st Symposium of the Estuarine and Coastal Sciences Association (ECSA), held in Bilbao, Spain, 3-7 July 2000

This volume focuses on the nutrient and organic matter inputs in estuaries and other coastal ecosystems, their effects on geochemistry and community structure and possibilities for recovery of the systems to a trophic state that is beneficial for man and nature. The book provides many examples of the effects of the enhanced supply of nutrients and organic matter on the chemical features of the water and on the structure, metabolism and trophic pathways of the biological communities. Also included are several case studies providing considerable insight into the response of the different coastal ecosystems to long term changes in the trophic state of the water. Current knowledge on modeling as a tool to manage the trophic state of the coastal ecosystems is also dealt with, making this book one of interests to scientist and students as well as managers. Front Matter....Pages i-x Causes, historical development, effects and future challenges of a common environmental problem: eutrophication....Pages 1-19 Modern foraminiferal record of alternating open and restricted environmental conditions in the Santo André lagoon, SW Portugal....Pages 21-27 Nutrient inputs to the Irish Sea: temporal and spatial perspectives....Pages 29-38 Nutrient-enhanced productivity in the northern Gulf of Mexico: past, present and future....Pages 39-63 Potential modification of the fluxes of nitrogen from the Humber Estuary catchment (U.K.) to the North Sea in response to changing agricultural inputs and climate patterns....Pages 65-77 Estimation of ecological exergy using weighing parameters determined from DNA contents of organisms — a case study....Pages 79-90 Trophic status based on nutrient concentration scales and primary producers community of tropical coastal lagoons influenced by groundwater discharges....Pages 91-98 ‘Ferry-Boxes’ and data stations for improved monitoring and resolution of eutrophication-related processes: application in Southampton Water UK, a temperate latitude hypernutrified estuary....Pages 99-110 Identifying ‘hot spots’ of biological and anthropogenic activity in two Irish estuaries using means and frequencies....Pages 111-123 Distribution patterns of nutrients and symptoms of eutrophication in the Rio de la Plata River Estuary System....Pages 125-139 Baseline study of soft bottom benthic assemblages in the Bay of Santander (Gulf of Biscay)....Pages 141-149 Nutrient (N, P, Si) fluxes between marine sediments and water column in coastal and open Adriatic....Pages 151-159 Nitrogen fluxes and budget seasonality in the Ria Vigo (NW Iberian Peninsula)....Pages 161-171 The winter and summer partitioning of dissolved nitrogen and phosphorus. Observations across the Irish Sea during 1997 and 1998....Pages 173-184 Long-term changes in Wadden Sea nutrient cycles: importance of organic matter import from the North Sea....Pages 185-194 Particulate inputs to Dublin Bay and to the South Lagoon, Bull Island....Pages 195-204 A model for predicting the temporal evolution of dissolved oxygen concentration in shallow estuaries....Pages 205-211 Modelling the faecal coliform concentrations in the Bilbao estuary....Pages 213-219 Simulating vertical water mixing in homogeneous estuaries: the SADO Estuary case....Pages 221-227 Mathematical modelling as a management tool for water quality control of the tropical Beberibe estuary, NE Brazil....Pages 229-237 The prediction of nutrients into estuaries and their subsequent behaviour: application to the Tamar and comparison with the Tweed, U.K.....Pages 239-250 Seasonal change in the proportion of bacterial and phytoplankton production along a salinity gradient in a shallow estuary....Pages 251-262 The planktonic food web structure of a temperate zone estuary, and its alteration due to eutrophication....Pages 263-333 The feeding strategy of the dunlin ( Calidris alpina L.) in artificial and non-artificial habitats at Ria de Aveiro, Portugal....Pages 335-343 Short-term variations in the physiological state of phytoplankton in a shallow temperate estuary....Pages 345-358 Evidence of a planktonic food web response to changes in nutrient input dynamics in the Mar Menor coastal lagoon, Spain....Pages 359-369 Some ecological properties in relation to eutrophication in the Baltic Sea....Pages 371-377 Evaluation of the nutrient inputs to a coastal lagoon: the case of the Ria de Aveiro, Portugal....Pages 379-385 Evaluation of a eutrophic coastal lagoon ecosystem from the study of bottom sediments....Pages 387-401 Changes in point and non-point sources phosphorus loads in the Thau catchment over 25 years (Mediterranean Sea — France)....Pages 403-411 Nutrients related to the hydrologic regime in the coastal lagoons of Viladecans (NE Spain)....Pages 413-422 Filling of a wetland (Seine estuary, France): natural eutrophication or anthropogenic process? A sedimentological and geochemical study of wetland organic sediments....Pages 423-435 The effects of macroalgal cover on the spatial distribution of macrobenthic invertebrates: the effect of macroalgal morphology....Pages 437-448 Importance of discards of a beam trawl fishery as input of organic matter into nursery areas within the Tagus estuary....Pages 449-455 The intertidal soft-bottom infaunal macrobenthos in three Basque estuaries (Gulf of Biscay): a feeding guild approach....Pages 457-468 ‘ In vitro ’ and ‘ in situ ’ decomposition of nuisance macroalgae Cladophora glomerata and Pilayella littoralis ....Pages 469-476 Late Holocene pollution in the Gernika estuary (southern Bay of Biscay) evidenced by the study of Foraminifera and Ostracoda....Pages 477-491 Planktonic chlorophyll a and eutrophication in two Mediterranean littoral systems (Mallorca Island, Spain)....Pages 493-504 Physiological response of Spisula subtruncata (da Costa, 1778) to different seston quantity and quality....Pages 505-511 The management of nutrients and potential eutrophication in estuaries and other restricted water bodies....Pages 513-524 Back Matter....Pages 525-526 Proceedings of the 31st Symposium of the Estuarine and Coastal Sciences Association (ECSA) held in Bilbao, Spain, 3-7 July 2000