The amphipod Talitrus saltator as a bioindicator of human trampling on sandy beaches

详细信息    查看全文

• 作者：Alberto Ugolini ; Giuseppe Ungherese ; Silvia Somigli ; Giuditta Galanti ; Davide Baroni ; Francesca Borghini ; Nicola Cipriani ; Massimo Nebbiai ; Maurizio Passaponti ; Silvano Focardi
• 关键词：Human trampling ; Heavy metals ; Mediterranean sandy shores ; Beaches ; Bioindicator ; Amphipod ; Talitrus saltator
• 刊名：Marine Environmental Research
• 出版年：2008
• 出版时间：May 2008
• 年：2008
• 卷：65
• 期：4
• 页码：349-357
• 全文大小：160 K

文摘

The present paper assesses the use of the supralittoral amphipod Talitrus saltator as a bioindicator of the effects of human trampling on the supralittoral sandy band. Samplings in delimited areas were carried out at sites subjected to different human impact. The results showed a strong negative correlation between the number of swimmers and the sandhopper population density, while there was no clear relationship between sandhopper abundance and the other factors considered: granulometry, compactness and organic carbon content of the sand, and trace metal contents in the sand and sandhoppers. A field test of trampling conducted in a confined space showed its direct negative effect on sandhopper survival. However, trace metal analysis confirmed the ability of T. saltator to bioaccumulate some elements (Hg, Zn, Cu, Cd). Our study demonstrates that T. saltator is a good bioindicator of human impact in the supralittoral zone of sandy shores.