books.google.it - Ecosystems of the benthic environment are a sensitive index to ecological change, and as such demand long-term and effective monitoring. Methods for the Study of Marine Benthos provides comprehensive information on the tools and techniques available to those working in areas where the declining health...http://books.google.it/books/about/Methods_for_the_Study_of_Marine_Benthos.html?hl=it&id=jKByXAo5m5kC&utm_source=gb-gplus-shareMethods for the Study of Marine Benthos