Spatial-Temporal Distribution of the Burrowing Shrimp Callichirus major (Say, 1818) (Decapoda, Callichiridae) in Preserv
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Spatial-Temporal Distribution of the Burrowing Shrimp Callichirus major (Say, 1818) (Decapoda, Callichiridae) in Preserved Populations of Southeastern Brazil Ivan Rodrigo Abrão Laurino 1,2
&
Francisco Sekiguchi Buchmann 2
&
Patricio Hernáez 3
Received: 11 May 2020 / Revised: 30 June 2020 / Accepted: 3 August 2020 # Springer Nature Switzerland AG 2020
Abstract 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. Keywords Ghost shrimp . Global changes . Seasonality . Intertidal zonation . Sandy beaches . Tidal amplitude
Introduction Sandy beaches are dynamic environments subject to modifying action of waves, tides and winds, which causes effects and changes on the spatial distribution and life-history of the resident macroinfauna (Short 1996; Schlacher et al. 2007). In
these environments, intertidal organisms are cyclically exposed to large variations in temperature and emersion periods that play a key role in the horizontal zonation and segregation of organisms (McLachlan et al. 1993; Rodil and Lastra 2004; McLachlan and Defeo 2013). Insight about the biological populations on sandy beaches, their distribution changes and
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s41208-020-00243-7) contains supplementary material, which is available to authorized users. * Ivan Rodrigo Abrão Laurino [email protected] Francisco Sekiguchi Buchmann [email protected]
1
Instituto Oceanográfico (IO), Laboratório de Manejo, Ecologia e Conservação Marinha,
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