State and trends of the national marine environment

This assessment summary has changed in 2016

  • The new 2016 assessment summary combines ecological processes, physical & chemical processes and pests, introduced species. diseases and algal blooms
Component
Summary
Grade
Very poor Poor Good Very good
Confidence
In Grade In Trend
Comparability
To previous years

Overall, the 22 types of habitats assessed are in very good condition. However, nationally, two seabed habitats of the outer continental shelf and slope are in poor condition, and the condition of the water column of the inner shelf and shoreline (

Year(s): 
2011
4
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Overall, the 32 species groups assessed are in good condition, but 13 groups are in poor or very poor condition, and only 5 groups are considered to be in very good condition. Nationally, 4 species groups are in decline, and 7 are recovering from extensive hunting and fishing of earlier times. The species of the east are in the poorest condition

Year(s): 
2011
3
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Overall, the 16 types of ecological processes are in very good condition. Nationally, predation is poor, reflecting the extensive impacts of historical and present-day fishing, and connectivity in the south-east continues to decline

Year(s): 
2011
4
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Overall, the 27 physical and chemical processes assessed are in excellent condition, with most indicating no significant changes caused by humans that would affect ecosystem structure or functions. However, the worst places show substantial changes, with significant ecological impacts—the south-east region is the worst affected, with major changes to freshwater, sediments and nutrients to estuaries and bays

Year(s): 
2011
4
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Overall, there are no regionally or nationally significant changes to ecosystems caused by these factors, although in the worst places there are effects that are significant. The east, south-east and south-west regions are the worst affected, and impacts are major in some areas

Year(s): 
2011
4
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed
Ward T (2011). Marine environment: State and trends of the national marine environment. In: Australia state of the environment 2011, Australian Government Department of the Environment and Energy, Canberra, https://soe.environment.gov.au/assessment-summary-66-state-and-trends-national-marine-environment, DOI 10.4226/94/58b657ea7c296