Indicator guidelines: surface water chlorophyll a concentrations 2008-08-12T00:39:34Z 2008-09-04T06:53:33Z Indicator guidelines: surface water chlorophyll a concentrations Estuarine, coastal and marine habitat condition National Land and Water Resources Audit National Land and Water Resources Audit <p>This document presents the recommended monitoring guidelines for collecting, collating and reporting information on surface water chlorophyll a concentrations for national, state/territory and regional application.</p> PN21537 PN21537