Shredders are abundant and species-rich in tropical continental-island low-order streams: Gorgona Island, Tropical Eastern Pacific, Colombia
| Autor: | Juan F. Blanco, Magnolia Longo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Biomass (ecology)
leaf litter Tropical Eastern Pacific Ecology la superposición en la dieta hojarasca Plant litter Biology shredders dietary overlap trituradoras lcsh:Biology (General) Benthic zone Abundance (ecology) spatial arrangement Guild la disposición espacial Species richness General Agricultural and Biological Sciences lcsh:QH301-705.5 Invertebrate |
| Zdroj: | Revista de Biología Tropical, Vol 62, Iss suppl 1, Pp 85-105 (2014) Revista de Biología Tropical; Vol. 62 No. S1 (2014): Volume 62 – Supplement 1 – February 2014: Research in the Gorgona National Natural Park, Colombia; 85-105 Revista de Biología Tropical; Vol. 62 Núm. S1 (2014): Volumen 62 – Suplemento 1 – 2014: Investigaciones en el Parque Nacional Gorgona, Colombia; 85-105 Revista Biología Tropical; Vol. 62 N.º S1 (2014): Volumen 62 – Suplemento 1 – 2014: Investigaciones en el Parque Nacional Gorgona, Colombia; 85-105 Portal de Revistas UCR Universidad de Costa Rica instacron:UCR Revista de Biología Tropical, Volume: 62 Supplement 1, Pages: 105-85, Published: FEB 2014 |
| ISSN: | 0034-7744 2215-2075 |
| DOI: | 10.15517/rbt.v62i0 |
| Popis: | Macroinvertebrate shredders may have been overlooked in tropical streams due to the geographical bias of early studies, methodological limitations, and the complex influences of local-scale factors. While shredders seem to be scarce in most oceanic island streams, we here test if they are abundant in a continental island. Gut content analyses of benthic macroinvertebrates were used to identify shredding taxa in streams located in different types of forest in Gorgona Island (Tropical Eastern Pacific). General dietary overlap (GO) was quantified and relative biomass, relative frequency and the leaf litter percentage in the guts were used to establish the relative importance of each taxon in the shredding guild. Various indices were used to identify the spatial arrangement (i.e. contagious or random) of each taxon and shredding guild among streams. We identified 31 shredding taxa that were divided into specialist-shredders (14 taxa), generalist-shredders (10), and collector-shredders (7). There was a complete GO (0.75, p |
| Databáze: | OpenAIRE |
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