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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.)

Spatial patterns of the gastropod Olivella minuta reveal the importance of tide-dominated beaches and the subtidal zone for sandy beach populations

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Corte, Guilherme N. [1, 2] ; Yokoyama, Leonardo Q. [2, 3] ; Tardelli, Daniel T. [2] ; Checon, Helio H. [1, 2] ; Turra, Alexander [2]
Total Authors: 5
[1] Univ Estadual Campinas, Inst Biol, Dept Biol Anim, BR-13083970 Campinas, SP - Brazil
[2] Univ Sao Paulo, Inst Oceanog, Dept Oceanog Biol, Lab Manejo Ecol & Conservacao Marinha, BR-05508120 Sao Paulo, SP - Brazil
[3] Univ Fed Sao Paulo, Inst Mar, Dept Ciencias Mar, Lab Ecol & Gestao Costeira, BR-11070100 Santos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Web of Science Citations: 0

The main ecological hypotheses on spatial patterns of intertidal sandy beach populations predict that they are mainly influenced by morphodynamic features, with most population parameters (e.g., number of individuals, reproductive effort, recruitment rates) increasing from wave-dominated reflective to wave-dominated dissipative beaches. Yet, these hypotheses did not take into account tidemodified and tide-dominated environments due to the lack of data from these habitats. Also, they were based on species inhabiting the intertidal and supratidal zones while those living in the intertidalsubtidal beach gradient (marine component of the Littoral Active Zone) remain largely overlooked. We investigated differences in abundance and size of the sea snail Olivella minuta in the intertidal and subtidal zones of two beach types: a wave-dominated dissipative beach and a tide-dominated sandmud flat. Samplings were performed at three different times (September and December 2011, and March 2012). Abundance was higher at the tidal flat, with a high number of small (young) and large (old) individuals. On the other hand, individuals from the dissipative beach mainly belonged to larger size classes. Furthermore, we observed that individuals were more homogeneously distributed in the across-shore gradient of the tidal flat, with a similar number of individuals inhabiting both intertidal and subtidal zones, whereas most individuals (especially young ones) from the dissipative beach were found in the subtidal zone. Overall, our results support the importance of beach morphodynamics as a main driver of sandy beach populations along the Littoral Active Zone and emphasize the relevance of tide-dominated environments for coastal species. Importantly, our results demonstrate the ecological role of the subtidal zone for sandy beach macrobenthic populations and the necessity of performing ecological investigations along the whole Littoral Active Zone. (C) 2020 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 17/17071-9 - Preserving sandy beaches: biodiversity, goods and services, and impacts on a neglected ecosystem
Grantee:Guilherme Nascimento Corte
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 18/22036-0 - Evaluating the potential of different benthic indicators to assess sandy beach ecological integrity: subsides for management and monitoring practices
Grantee:Hélio Hermínio Checon
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/15893-5 - Interpopulation variability in sandy beaches: case study about the zonation, reproduction, and growth of Olivella minuta (Gastropoda, Olividae)
Grantee:Leonardo Querobim Yokoyama
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/17585-6 - Population ecology of Olivella minuta (Link, 1807) (Gastropoda, Olividae) in the intertidal of Araçá and Barequeçaba beaches, northern coast of São Paulo State
Grantee:Alexander Turra
Support type: Regular Research Grants
FAPESP's process: 15/03804-9 - Environmental governance of macrometropolis paulista in face of climate variability
Grantee:Pedro Roberto Jacobi
Support type: Research Program on Global Climate Change - Thematic Grants