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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. eng
dc.contributor.author Peglar, Sylvia M. eng
dc.contributor.author Boomer, Ian eng
dc.contributor.author Flower, Roger J. eng
dc.contributor.author Ramdani, Mohammed eng
dc.contributor.author Appleby, P. G. eng
dc.contributor.author Bjune, Anne Elisabeth eng
dc.contributor.author Patrick, Simon T. eng
dc.contributor.author Kraïem, Mohammed M. eng
dc.contributor.author Fathi, Adel A. eng
dc.contributor.author Abdelzaher, H. M. A. eng
dc.date.accessioned 2007-12-20T09:03:57Z
dc.date.available 2007-12-20T09:03:57Z
dc.date.issued 2001 eng
dc.identifier.citation Aquatic Ecology 2001 35 (3/4): 405-430 en
dc.identifier.issn 1386-2588 eng
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 eng
dc.publisher Springer eng
dc.subject Aquatic ecosystem responses eng
dc.subject Aquatic plants eng
dc.subject Mollusca eng
dc.subject Multi-proxy study eng
dc.subject Ostracoda eng
dc.subject Sustainability eng
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 eng
dc.type Peer reviewed eng
dc.type Journal article eng
dc.subject.nsi VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 nob
bora.peerreviewed Peer reviewed eng
bibo.doi http://dx.doi.org/10.1023/A:1013265310922 eng
dc.identifier.doi http://dx.doi.org/10.1023/A:1013265310922


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