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The Managed Recession of Lake Okeechobee, Florida: Integrating Science and Natural Resource Management Ecology and Society
Steinman, Alan; Annis Water Resources Institute, Grand Valley State University; steinmaa@gvsu.edu; Havens, Karl; South Florida Water Management District; khavens@sfwmd.gov; Hornung, Lewis; South Florida Water Management District; lhornun@sfwmd.gov.
Resource management decisions often are based on a combination of scientific and political factors. The interaction of science and politics is not always apparent, which makes the decision-making process appear arbitrary at times. In this paper, we present a case study involving Lake Okeechobee, a key environmental resource in South Florida, USA, to illustrate the role that science played in a high-profile, highly contentious natural resource management decision. At issue was whether or not to lower the water level of Lake Okeechobee. Although scientists believed that a managed recession (drawdown) of water level would benefit the lake ecosystem, risks were present because of possible future water shortages and potential environmental impacts to downstream...
Tipo: Peer-Reviewed Reports Palavras-chave: Aquatic resource management; Environmental management; Lake Okeechobee; Lake restoration; Light and aquatic plants; Restoration ecology; Role of science in management; Submerged aquatic vegetation; Water supply vs. ecological health.
Ano: 2002
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Re-oligotrophication trajectories of macrophyte assemblages in Mediterranean coastal lagoons based on 17-year time-series ArchiMer
Le Fur, Ines; De Wit, Rutger; Plus, Martin; Oheix, Jocelyne; Derolez, Valerie; Simier, Monique; Malet, Nathalie; Ouisse, Vincent.
Since the mid-20th century, Mediterranean lagoons have been affected by eutrophication, leading to significant changes in primary producers. In the early 2000s, management actions have been implemented to reduce nutrient inputs with the aim to achieve a good ecological status as requested by the EU water framework directive. As a result of these actions, a sharp decline in nutrient loads has been recorded in several lagoons leading to an oligotrophication of the water column. The analyses of a long-term data set (1998-2015) of 21 polyhaline and euhaline lagoons with contrasting trophic status allowed us to infer a general scheme for the changes in macrophyte assemblages during the oligotrophication process. Placing hypertrophic and oligotrophic conditions...
Tipo: Text Palavras-chave: Submerged aquatic vegetation; Recovery; Nutrient reduction; Restoration; Long-term data series; Resilience; Regime shift; Coastal lagoon.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00474/58555/61110.pdf
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Aquatic food webs in mangrove and seagrass habitats of Centla Wetland, a Biosphere Reserve in Southeastern Mexico Neotropical Ichthyology
Mendoza-Carranza,Manuel; Hoeinghaus,David J; Garcia,Alexandre M; Romero-Rodriguez,Ángel.
Mangrove and seagrass habitats are important components of tropical coastal zones worldwide, and are conspicuous habitats of Centla Wetland Biosphere Reserve (CWBR) in Tabasco, Mexico. In this study, we examine food webs in mangrove- and seagrass-dominated habitats of CWBR using stable isotope ratios of carbon and nitrogen. Our objective was to identify the importance of carbon derived from mangroves and seagrasses to secondary production of aquatic consumers in this poorly studied conservation area. Carbon and nitrogen isotope ratios of basal sources and aquatic consumers indicated that the species-rich food webs of both habitats are dependent on riparian production sources. The abundant Red mangrove Rhizophora mangle appears to be a primary source of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon flow; Food chains; Neotropical; Rizophora mangle; Submerged aquatic vegetation; Vallisneria americana.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100020
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