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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional de Costa Rica
2009
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| Online Access: | https://www.redalyc.org/articulo.oa?id=633766716001 |
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Table of Contents:
- SPATIAL AND SEASONAL VARIABILITY OF THALASSIA TESTUDINUM IN NUEVITAS BAY, CUBA Beatriz Martínez-Daranas Rubén Cabrera Fabián Pina-Amargós Biología bottom sewage Biomass shoot density trawl Àsheries A study was carried out on biomass, shoot density and leaf production variability in three Thalassia testudinum meadows under different environmental characteristics in Nuevitas Bay, Cuba, in different seasons. The Àrst site has muddy-sandy sediments and it is affected by bottom trawl Àshing; the second has sandy sediments and it is affected by waste-water discharges, and the third has sandy-muddy sediments and no human impacts are present. Leaf, rhizome, and root biomass, daily production of leaves, density of short shoots, and length and width of leaves were estimated Àve times in a year. Seasonal variations were observed, with higher values of leaf and rhizome biomass, short shoot density, and daily production of leaves occurring in spring and summer. Spatial differences seem to be related to the environmental characteristics of each site: Leaf daily production, leaf biomass and leaf length were lower, and root biomass was higher in the site where sediments are impacted by Àshing with bottom trawls; short shoot density and rhizome biomass were higher in the nonaffected site. Lower values of root biomass appeared where waste-water discharges occurred. 2009 artículo científico 1659-455X https://www.redalyc.org/articulo.oa?id=633766716001 en http://www.redalyc.org/revista.oa?id=6337 Revista Ciencias Marinas y Costeras application/pdf Universidad Nacional de Costa Rica Revista Ciencias Marinas y Costeras (Costa Rica) Vol.1