Volta

Taxonomic and functional diversity patterns of nematode assemblages in a semi-enclosed coastal system (Pagasitikos gulf, Central Aegean Sea)

Taxonomic and functional diversity patterns of nematode assemblages were examined in a trawl-restricted gulf (Pagasitikos Gulf, Central Aegean Sea). The goal was to determine the drivers that structure nematode communities and examine whether functional approaches add information beyond taxonomic patterns. Samples were taken from 36 stations across three nutrient zones and genus-level abundances were combined with categorical traits to calculate taxonomic and functional indices. Environmental drivers were examined using multivariate analyses, including RLQ ordination, variance partitioning, null models, and generalized additive models of functional groups. Genus richness, Shannon diversity, Rao's Q, functional dispersion, functional richness and maturity index differed among zones and these differences remained significant after accounting for depth. The lower external zone contained 76.71% of the total genus …

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