Author(s): Laurino, Ivan Rodrigo Abrão [UNESP] ; Buchmann, Francisco Sekiguchi [UNESP] ; Hernáez, Patricio
Date: 2020
Persistent ID: http://hdl.handle.net/11449/200899
Origin: Oasisbr
Subject(s): Ghost shrimp; Global changes; Intertidal zonation; Sandy beaches; Seasonality; Tidal amplitude; Ghost shrimp; Ghost shrimp; Global changes; Global changes; Intertidal zonation; Intertidal zonation; Sandy beaches; Sandy beaches; Seasonality; Seasonality; Tidal amplitude; Tidal amplitude
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
The understanding of the processes that regulates the distribution of the resident macroinfauna on sandy beaches is an urgent need at the current global change scenario. Here, we examine whether the spatial-temporal distribution of the burrowing shrimp Callichirus major (Callichiridae) is affected by the climatic and tidal regimes in two sandy beaches of Brazil (José de Menino and Itaguaré), where is totally prohibited the capture of this species. To this end, we counted shrimp burrows across transects plotted perpendicular to the water line. We found that C. major had a non-random pattern of distribution with dense aggregations of burrows near to the low-tide line. Burrow density and distribution of C. major did not differ across the annual cycle, not following the remarkably environmental seasonality of the southeastern region of Brazil. However, both population parameters were adversely affected when C. major was subject to a high tidal variability. Also, the probability of C. major builds a gallery in intertidal habitats is greater on beaches with very fine sand and low variability of tide amplitude than on beaches with coarser sediments and greater tidal dynamics. Our results point to survival of C. major is not seriously compromised by temperature and precipitation variations, but rather by eventual changes in the tidal regime and sediments. Considering the current scenario of climate change, we argue in favor of C. major may be a good biological model to assess the potential impact of tidal flooding connected to the sea level rise and erosion on coastal habitats.
Instituto Oceanográfico (IO) Laboratório de Manejo Ecologia e Conservação Marinha Praça do Oceanográfico Universidade de São Paulo – USP, 191 - CEP: 05508-120, Cidade Universitária
Instituto de Biociências (IB) Campus do Litoral Paulista (CLP) Laboratório de Estratigrafia e Paleontologia Praça Infante Dom Henrique Universidade Estadual Paulista – UNESP, s/n°, Parque Bitaru, CEP 11330-900
Facultad de Ciencias Centro de Estudios Marinos y Limnológicos Universidad de Tarapacá – UTA, Av. General Velásquez
Instituto de Biociências (IB) Campus do Litoral Paulista (CLP) Laboratório de Estratigrafia e Paleontologia Praça Infante Dom Henrique Universidade Estadual Paulista – UNESP, s/n°, Parque Bitaru, CEP 11330-900
FAPESP: 2011/09627-0
