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Re-establishment of epibiotic communities in reforested mangroves of Gazi Bay, Kenya
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för systemekologi.
2006 (English)In: Wetlands Ecology and Management, ISSN 0923-4861, E-ISSN 1572-9834, Vol. 14, no 6, 527-538 p.Article in journal (Refereed) Published
Abstract [en]

Recolonization of epibiotic flora and fauna in two fringing Sonneratia alba reforestation plots was investigated and compared to a natural mangrove stand and a denuded site in Gazi Bay, Kenya. The reforested sites differed with respect to land history and planting density. Habitat availability in the form of pneumatophore surface differed among forested sites (P<0.001), and between landward and seaward zones (P<0.05). Eighteen algal species were found in the natural area compared to 23 and 10 in replanted sites. Only one species was encountered in the denuded area. SIMPER analysis distinguished Enteromorpha ramulosa, Polysiphonia sp., Hypnea sp. and Caloglossa leprieuri as the main algal species responsible for differences between sites. Algal bio- mass was positively correlated to pneumatophores area (P<0.001). Total algal biomass differed mark- edly between forested sites: 1.4 (matrix replantation), 28.6 (natural stand) and 44.3 g m-2 (integrated replantation) in the seaward zones. The matrix replantation showed strong differences in algal community assemblages compared to the other forested sites, and this site also had significantly lower biomass of sessile benthic fauna (P<0.001). Statistical differences in algal (P<0.01) and sponge (P<0.05) community composition between landward and sea- ward zones were observed in all sites and trunk fouling fauna was distinctly different between sites. Reasons for the above patterns are discussed and it is suggested that zonation patterns affecting pneumatophore surface and inundation time, in combination with proximity of sites to natural seeding areas, are the most likely explanations for observed patterns of epibiotic community distribution in this study.

Place, publisher, year, edition, pages
Kluwer Journals Online/SpringerLink , 2006. Vol. 14, no 6, 527-538 p.
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URN: urn:nbn:se:hgo:diva-998DOI: 10.1007/s11273-006-9005-7OAI: oai:DiVA.org:hgo-998DiVA: diva2:424424
Available from: 2011-06-17 Created: 2011-06-17 Last updated: 2014-01-03Bibliographically approved

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