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Journal of Coastal Conservation

, Volume 22, Issue 2, pp 369–383 | Cite as

Deconstructing responses of sandy beach arthropodofauna to shoreline erosion: looking for the proper spatial scale to monitor biodiversity

  • Felicita Scapini
  • Simone Gambineri
  • Lucia Fanini
Article

Abstract

The suitability of the small spatial scale of sandy beaches was tested as unit for monitoring biodiversity. The study targeted a coastal stretch in central Mediterranean, characterised by a patchy landscape and erosion trend. Beach arthropod communities (abundance, biodiversity and behavioural adaptation) were considered in the context of ongoing changes and threats to beach habitats. Nine beach units were selected as part of three main coast sectors, each with a different exposure. Beach units were sampled for arthropod diversity, which was assessed at different levels of organisation: taxa abundance, diversity indices and behavioural adaptation. These features were used as response variables in models considering beach physical factors. Sand grain size, swash extent and beach slope resulted the driving forces for abundance and diversity. Behavioural tests indicated a local adaptation to the shoreline direction, with mean angles of orientation seawards. Data related to biodiversity assessment were applied to the estimate of Conservation and Recreation Indices (CI and RI). Coast sectors subject to different erosion rates scored differently, pointing to a potential conflict in management of beaches subject to physical erosion. Overall, data depicted beach sectors, each one including one or more beach units, as the most suitable dimension for deconstruction to the small-spatial scale. The selection of the scale for deconstruction, applicable to geomorphological, biological and managerial contexts, would be of paramount importance to guide decision-making and compare coastal stretches also in other geographic contexts.

Keywords

Sandy beaches Diversity Talitrid orientation Habitat fragmentation Management Conservation 

Notes

Acknowledgements

We thank the students Sabina Antonelli. Simona Fabiano and Dino Mazzei for their help in the samplings, experiments and sample processing, and professor Antonio Mingozzi for having illustrated us the problems affecting the coastline subject of this study. The research comply with the spirit of Italy and Calabria Region regulation regarding research and responsible collecting samples and specimens. The research was funded by the University of Florence.

Supplementary material

11852_2017_585_MOESM1_ESM.docx (16 kb)
Table S1 (DOCX 16 kb)
11852_2017_585_MOESM2_ESM.docx (17 kb)
Table S2 (DOCX 16 kb)
11852_2017_585_MOESM3_ESM.docx (16 kb)
Table S3 (DOCX 16 kb)

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© Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of BiologyUniversity of FlorenceFlorenceItaly
  2. 2.Institute for Marine Biology Biotechnology and Aquacolture, Hellenic Centre for Marine Research (IMBBC-HCMR), Gournes Pediados former US baseCreteGreece

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