| Autor: |
Magnolia Longo, Juan F. Blanco |
| Jazyk: |
English<br />Spanish; Castilian |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Revista de Biología Tropical, Vol 62, Iss suppl 1, Pp 85-105 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
0034-7744 |
| 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: |
Directory of Open Access Journals |
| Externí odkaz: |
|
