By Giulio Relini
The most subject matters of the Symposium have been biodiversity in enclosed and semi-enclosed seas and synthetic habitats, and the recovery of degraded platforms. those topics are hugely suitable this day either from a easy medical perspective and from an utilized process. The papers facing the 1st subject characterize present learn and matters approximately marine biodiversity in enclosed seas and may have broad entice all these attracted to figuring out and retaining the biodiversity of the seas and particularly of the Mediterranean and Black Seas. The papers within the moment subject matter symbolize a synthesis of up to date wisdom on synthetic habitats and the way they could give a contribution to defense of coastal marine ecosystems, to enhancement of species variety and organic assets and to recovery of degraded marine environments.
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Additional info for Biodiversity in Enclosed Seas and Artificial Marine Habitats: Proceedings of the 39th European Marine Biology Symposium, held in Genoa, Italy, 21-24 July 2004 (Developments in Hydrobiology)
Marine biodiversity and ecosystem services: an elusive link. Journal of Experimental Marine Biology and Ecology 250: 117–131. Duarte, C. , 2002. The future of seagrass meadows. Environmental Conservation 29(2): 192–206. Duarte, C. M. & C. L. Chiscano, 1999. Seagrass biomass and production: a reassessment. Aquatic Botany 65: 159–174. Duarte, C. M. & K. Sand-Jensen, 1990a. Seagrass colonisation: patch formation and patch growth in Cymodocea nodosa. Marine Ecology Progress Series 65: 193– 200. Duarte, C.
In sector II, the meadow enlarged towards the river mouth and onshore by about 26% but the lower limit regressed in a similar proportion; 48% remained stable. In Hydrobiologia (2007) 580:35–41 sector III there was no relevant change: around 77% of the meadow kept steady and the upper and lower limits remained basically the same. Discussion Comparing data from different sources and methods makes it possible that some differences do not reflect change over time, as pointed out by Leriche et al. (2004).
2004). During recent years the reconstruction of historical data has become of great interest in relation to changes and regressions of coastal biotic assemblages under the influence of natural and anthropogenic factors, as pointed out by several authors (Underwood, 1996; Munda, 2000; Falace, 2000; Giangrande, 2003). , 2005). g. diversity of habitats or environmental gradients) but also on sampling 123 Hydrobiologia (2007) 580:43–56 methods, specific systematic knowledge, nomenclature discrepancies from author to author, and systematic revisions over time.