Long-term chlorophyll monitoring in the Great Barrier Reef Lagoon : status report 1, 1993-1995

Abstract

In 1992 the Great Barrier Reef Marine Park Authority initiated the Great Barrier Reef Nutrient Status Monitoring Network (hereafter the Network). The broad objectives of the Network are to document the nutrient status of regional waters within the Great Barrier Reef lagoon using chlorophyll a concentration as a proxy nutrient bioindicator. Chlorophyll a is used in preference to routine nutrient analysis because (a) chlorophyll a integrates change in nutrient availability over time; (b) samples are comparatively simple to collect; and (c) chlorophyll a is comparatively inexpensive to analyse. The Network was conceived to be ongoing, and to complement and collaborate with a number of other existing monitoring programs to ensure comprehensive reporting of the status of the Great Barrier Reef (GBR).