GHOST CRAB BURROWS SIMULATION SHOWS DIFFERENTIAL ACROSS-SHORE PERSISTENCE

Autor(es)

Campagnoli, Mariana L. ^[1] ; Pombo, Maira ^{[2, 3]} ; Turra, Alexander ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Biosci Inst, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Oceanog Inst, Dept Biol Oceanog, BR-05508120 Sao Paulo, SP - Brazil

^[3] Univ Fed Amapa, BR-68903419 Macapa, Amapa - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CRUSTACEANA; v. 91, n. 7, p. 821-830, 2018.
• Citações Web of Science: 2

Resumo

Ghost-crab abundance is often used as an indicator of sandy beach environmental quality. Most studies use an indirect approach, assuming a direct relationship between the number of burrows and individuals. We here hypothesized that burrows could remain open for different periods of time according to the beach strata. We performed a field manipulation to simulate burrows, with persistence of each one individually assessed over a month. Results succeeded in demonstrating a significant differential persistence of burrows among beach compartments (backshore, frontal dune, and coastal vegetation, i.e., in a landward oriented sequence), which can affect abundance estimates and are thus prone to overestimating larger size classes, which inhabit the landward limit of the species' range of occurrence. We recommend that this information is taken into consideration in population studies, and encourage the development of similar studies over broader spatial and temporal scales. (AU)

• Processo FAPESP: 10/20720-0 - Avaliação do potencial do caranguejo Ocypode quadrata (Crustacea: Decapoda: Brachyura: Ocypodidae) como bioindicador em praias arenosas: uma análise comportamental e metodológica
• Beneficiário: Maíra Pombo
• Linha de fomento: Bolsas no Brasil - Doutorado