GREAT BARRIER REEF
// Outlook Report 2014
2.5.1 Habitats to support species continued
Current summary and assessment components
Assessment grade and trend Very good Good Poor Very poor
Confidence Grade Trend
Continental slope: Much of the continental slope remains undisturbed and minimally impacted by human activities. In the south-east, an area is at high ecological risk because of sustained high levels of trawling. Open waters: Inshore open water habitats are degraded in the southern twothirds of the Region principally due to pollutants from land-based run-off. This habitat is thought to be minimally impacted in the remainder of the Region. Grading statements
All major habitats are essentially structurally and functionally intact and able to support all dependent species.
h n i 0
Trend since 2009
Improved Stable Deteriorated No consistent trend Adequate high-quality evidence and high level of consensus Limited evidence or limited consensus Inferred, very limited evidence
There is some habitat loss, degradation or alteration in some small areas, leading to minimal degradation but no persistent, substantial effects on populations of dependent species.
Habitat loss, degradation or alteration has occurred in a number of areas leading to persistent substantial effects on populations of some dependent species.
There is widespread habitat loss, degradation or alteration leading to persistent, substantial effects on many populations of dependent species.
Populations of species and groups of species
Outlook Report 2009: Assessment summary Populations of almost all known Great Barrier Reef species or groups of species appear to be intact, but some populations such as dugongs, as well as some species of sharks, seabirds and marine turtles, are known to have seriously declined, due mainly to human activities and declining environmental conditions. Many species are yet to be discovered and for many others, very little is known about their status. In time, more populations are likely to decline. Populations of some formally listed threatened species have stabilised but at very low numbers; other potentially threatened species continue to be identified.