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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A protocol for measuring spatial variables in soft-sediment tide pools

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Brenha-Nunes, Marina R. [1] ; Contente, Riguel F. [1] ; Rossi-Wongtschowski, Carmen L. D. B. [1]
Total Authors: 3
[1] Univ Sao Paulo, Inst Oceanog, Dept Oceanog Biol, Lab Ictiol & Crescimento, Praca Oceanog 191, Cidade Univ, BR-05508120 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Zoologia; v. 33, n. 2 2016.
Web of Science Citations: 1

We present a protocol for measuring spatial variables in large (>50 m(2)) soft-sediment tide pool. Secondarily, we present the fish capture efficiency of a sampling protocol that based on such spatial variables to calculate relative abundances. The area of the pool is estimated by summing areas of basic geometric forms; the depth, by taken representative measurements of the depth variability of each pool's sector, previously determined according to its perimeter; and the volume, by considering the pool as a prism. These procedures were a trade-off between the acquisition of reliable estimates and the minimization of both the cost of operating and the time spent in field. The fish sampling protocol is based on two consecutive stages: 1) two people search for fishes under structures (e.g., rocks and litters) on the pool and capture them with hand seines; 2) these structures are removed and then a beach-seine is hauled over the whole pool. Our method is cheaper than others and fast to operate considering the time in low tides. The method to sample fish is quite efficient resulting in a capture efficiency of 89%. (AU)

FAPESP's process: 11/50317-5 - Biodiversity and functioning of a subtropical coastal ecosystem: a contribution to integrated management
Grantee:Antonia Cecília Zacagnini Amaral
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 13/19435-7 - Characterization of ecological patterns of the ichthyofauna of Bay of Araçá (Southeastern Brazilian coast) through the complementarity among analytical methods and samplers
Grantee:Ríguel Feltrin Contente
Support type: Scholarships in Brazil - Post-Doctorate