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precedente: S2.2
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livello superiore: S2
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seguente: S2.4
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S2.3 - Biodiversity and ecosystem functioning in tropical marine environments
(Celebes Sea, Indonesia)
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Pusceddu Antonio (1)*,
Scopa Mariaspina (1),
Danovaro Roberto (1)
| (1) |
Dipart. di Scienze del Mare, Università Politecnica delle
Marche, Via Brecce Bianche, 60131 Ancona, Italia |
| * |
a.pusceddu@univpm.it |
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Despite tropical areas are considered highly diverse, available studies on
the relationships between biodiversity and ecosystem functioning in coastal
marine environments are almost not existent. Using nematodes as a model for
biodiversity patterns, we investigated the relationship between structural and
functional diversity and ecosystem functioning in mangroves, reef, river
estuary and seagrass sediments of the Pacific Ocean (Celebes Sea , Indonesia).
Here nematode species richness was on average 33% higher than in analogous
temperate habitats. We found that ecosystem functioning was independent from
structural biodiversity, but was related with functional diversity. This
result strongly supports the hypothesis that the loss of functions, rather
than the disappearance of a certain number of species, is a crucial step
leading to a potential collapse of ecosystem functioning. Both structural and
functional diversity were positively related with the maturity index,
suggesting that in tropical coastal marine sediments the highest diversity is
associated with nematode communities composed of a mixture of r- and
k-strategists. The results of the present study highlight that the
relationship between functional biodiversity and ecosystem functioning is
dependent upon life strategies of the involved species.
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consulta l' Indice analitico (alfabetico per autore) |
sfoglia l' Indice delle sessioni del Congresso |
a cura di Comoglio, Comino, e Bona
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