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Palaeolimnological responses of nine North African lakes in the CASSARINA Project to recent environmental changes and human impact detected by plant macrofossil, pollen, and faunal analyses

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dc.contributor.author Birks, Hilary H.
dc.contributor.author Peglar, Sylvia M.
dc.contributor.author Boomer, Ian
dc.contributor.author Flower, Roger J.
dc.contributor.author Ramdani, Mohammed
dc.contributor.author Appleby, P. G.
dc.contributor.author Bjune, Anne Elisabeth
dc.contributor.author Patrick, Simon T.
dc.contributor.author Kraïem, Mohammed M.
dc.contributor.author Fathi, Adel A.
dc.contributor.author Abdelzaher, H. M. A.
dc.date.accessioned 2007-12-20T09:03:57Z
dc.date.available 2007-12-20T09:03:57Z
dc.date.issued 2001
dc.identifier.citation Aquatic Ecology 2001 35 (3/4): 405-430 en
dc.identifier.issn 1386-2588
dc.identifier.uri http://dx.doi.org/10.1023/A:1013265310922
dc.identifier.uri http://hdl.handle.net/1956/2512
dc.description.abstract This paper presents multi-proxy palaeolimnological analyses from recent sediments in the nine CASSARINA lakes in northernmost Africa, three from each of Morocco, Tunisia, and Egypt. The lakes are diverse, ranging from hypersaline to brackish lagoons and fresh-water lakes from high to low conductivity and pH. The macrofossils analysed include fruits, seeds, and vegetative remains of plants, lagoon and fresh-water Mollusca, a range of other aquatic animals, and from one site in each country, Ostracoda and Foraminifera. The diverse macrofossils are multi-proxy indicators of environmental change, and demonstrate changes in response to human activities in the catchments of all the lakes. The three Egyptian Nile Delta lakes have received massive inputs of fresh-water due to modifications of the flow of the R. Nile culminating in the Aswan High Dam built in 1964. Elsewhere, water withdrawal is frequently a serious threat. One lake with high biodiversity in Morocco has been drained and cultivated, and a rare acid-water lake in Tunisia is in danger of drying up. The internationally famous Garaet El Ichkeul in Tunisia, which was so important for birds, has become permanently saline with a loss of diversity. All the lakes are affected by agricultural and/or urban run-off and are experiencing changes as a result of human activities. Several are in a marginally sustainable condition, whereas others are permanently damaged. en
dc.language.iso eng en
dc.publisher Springer en
dc.subject Aquatic ecosystem responses en
dc.subject Aquatic plants en
dc.subject Mollusca en
dc.subject Multi-proxy study en
dc.subject Ostracoda en
dc.subject Sustainability en
dc.title Palaeolimnological responses of nine North African lakes in the CASSARINA Project to recent environmental changes and human impact detected by plant macrofossil, pollen, and faunal analyses en
dc.type Peer reviewed en
dc.type Journal article en
dc.subject.nsi VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 no


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