Seagrass Ecology by Marten A. Hemminga

By Marten A. Hemminga

Seagrasses take place in coastal zones through the global within the parts of marine habitats which are so much seriously motivated by means of people. regardless of a starting to be information of the significance of those vegetation, an entire appreciation in their position in coastal ecosystems has but to be reached. This e-book presents an access aspect for these wishing to profit approximately seagrass ecology and offers a huge evaluation of the current country of information. the amount discusses the hot development in study and present learn foci, complemented via huge literature references to lead the reader to extra precise stories. This e-book can be useful to scholars of marine biology wishing to concentrate on this region and to validated researchers eager to input the sphere. moreover, it is going to supply a very good reference for these eager about the administration and conservation of coastal parts that harbor seagrasses.

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2A(e) 43 44 Seagrass architectural features Fig. 0 Rhizome diameter (cm) Fig. 5. Allometric relationships between module sizes (leaves, fruits and shoots and rhizome elongation rate, and the diameter of seagrass rhizomes. Each data point represents an individual species. ) (Duarte, 1991). As a consequence, the horizontal elongation rate of the rhizome tends to be slower in species with thick rhizomes (Duarte, 1991; Marba & Duarte, 1998; Fig. 5). e. surface L2 and mass L3), as expected from isometric growth (Duarte, 1991; Marba & Duarte, 1998).

Granata, T. (1999). An approach to the measurement of particlefluxand sediment retention within seagrass (Posidonia oceanicd) meadows. Aquatic Botany 65, 255-68. B. & May, B. (1980). Genetic identity of annual and perennial forms of Zostera marina L. Aquatic Botany, 8, 157-62. L. D. (1979). Biogeography of seagrasses: evidence from associated organisms. New Zealand Department of Scientific and Industrial Research Information Series, 137, 109-28. A. (1998). The root/rhizome system of seagrasses: an asset and a burden.

7 B, biomass; P, production Source: Adapted from Duarte & Chiscano (1999). Concluding remarks 23 1996; Duarte & Agusti, 1998). Current knowledge indicates that about 16% of seagrass production is stored in the sediments, which - if entering long-term burial - represents a net sink of carbon in the ecosystem. 16 x 1015 g C yr" 1 , or about 15% of the total carbon storage in marine ecosystems (Duarte & Cebrian, 1996; Duarte & Chiscano, 1999). Hence, seagrasses are important components of the marine carbon cycle, being responsible for a significant fraction of the net CO 2 uptake by marine biota.

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