State and trends of species populations and groups

This assessment summary has changed it's name in 2016.

Component
Summary
Grade
Very poor Poor Good Very good
Confidence
In Grade In Trend
Comparability
To previous years

Sharks and rays

This assessment summary component has changed in 2016. 

  • It was not clear why some species were identified singly and others were not. To maintain consistency across assessments single species categories were removed and where relevant specific case studies on each included in the 2016 report. Further, in regards to the shark assessments available data would have resulted in the same grade and trend being assigned to each, so it was regarded as not sensible to divide off two of the species.
  • This component is now included in a different summary

East, south-east and south-west in poor condition for some species (e.g. east coast population of grey nurse sharks)

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

Whale sharks

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.

  • This component is now included in a different summary

South-west in very poor condition

Year(s): 
2011
2
Deteriorating
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Great white sharks

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.

  • This component is now included in a different summary

Condition continues to decline in the east

Year(s): 
2011
2
Improving
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Tuna and billfish

This assessment summary component has changed in 2016. 

  • It was not clear why some species were identified singly and others were not. To maintain consistency across assessments single species categories were removed and where relevant specific case studies on each included in the 2016 report
  • This component is now included in a different summary

 

Condition very poor in the south-west and continuing to decline

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

Southern bluefin tuna

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.
  • This component is now included in a different summary

Condition very poor and stable

Year(s): 
2011
1
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Outer shelf (>50 m)—demersal and benthopelagic fish species

This assessment summary component has changed in 2016. 

  • Consultation with experts questioned the division of demersal and benthopelagic species into <50m and >50m when most species occur across both depth ranges and therefore would result in repetition of assessments (becuase they would be comprised of the same species). It also wasn't clear why demersal species were included in the inner shelf, outer shelf and slope assessment, while benthopelagic species were only included in the outer shelf but not6 the inner shelf or slope assessments. The assessments were therefore standardised to include demrsaland nethopelgic species across all depth categories and the depth categories were standardised to reflect recognised categorisation of the marine environment by the scientific community, and to avoid repetition of content between assessments
  • This component is now included in a different summary

Condition improving in all regions except the north-west, where the condition is generally stable but the worst areas continue to decline

Year(s): 
2011
2
Improving
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Inner shelf —demersal fish species

This assessment summary component has changed in 2016. 

  • The depth categorisation has been revised to reflect species composition change points. Titles have been standardised across the two assessments.
  • This component is now included in a different summary

South-east in good condition and improving

Year(s): 
2011
2
Improving
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Slope—demersal fish species

This assessment summary component has changed in 2016. 

  • Consultation with experts questioned the division of demersal and benthopelagic species into <50m and >50m when most species occur across both depth ranges and therefore would result in repetition of assessments (becuase they would be comprised of the same species). It also wasn't clear why demersal species were included in the inner shelf, outer shelf and slope assessment, while benthopelagic species were only included in the outer shelf but not6 the inner shelf or slope assessments. The assessments were therefore standardised to include demrsaland nethopelgic species across all depth categories and the depth categories were standardised to reflect recognised categorisation of the marine environment by the scientific community, and to avoid repetition of content between assessments
  • This component is now included in a different summary

Only south-east was assessed

Year(s): 
2011
2
Improving
Confidence (in grade): 
Limited
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Small pelagics—inner shelf

This assessment summary component has changed in 2016. 

  • Assessment title has been revised to maintain consistency in the use of ocean zone terms (epipelagic, mesopelagic, benthopelagic)
  • This component is now included in a different summary

South-east and south-west were assessed, with condition improving in the south-west

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

Inner-shelf reef fish species

This assessment summary component has changed in 2016. 

  • The original 2011 summary, grade, trend and confidence levels have been replicated here to assist comparison of changes between reporting cycles.
  • This component is now included in a different summary

South-west, east and south-east were assessed, and are all in poor condition

Year(s): 
2011
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Inner shelf—invertebrate species

This assessment summary component has changed in 2016. 

  • The depth range in the title of the assessment has been defined to maintain consistency in use across assessments.
  • This component is now included in a different summary

 

East and south-east in poor condition

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

Outer shelf and inner slope—invertebrate species

This assessment summary component has changed in 2016. 

  • The depth range in the title of the assessment has been defined to maintain consistency in use across assessments.
  • This component is now included in a different summary

South-east in poor condition

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

East in poor condition and declining

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

Seabirds—resident

This assessment summary component has changed in 2016. 

  • The assessment title has been revised to reflect that some seabird species can be resident during components of the year/their life cycle and migratory during other components the year/their life cycle, thereby making it difficult to consistently divide species by the two categories.

This component is now included in a different summary

South-east in poor condition

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

Seabirds—migratory

This assessment summary component has changed in 2016. 

  • The assessment title has been revised to reflect that some seabird species can be resident during components of the year/their life cycle and migratory during other components the year/their life cycle, thereby making it difficult to consistently divide species by the two categories.
  • This component is now included in a different summary

South-west in very poor condition

Year(s): 
2011
2
Deteriorating
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

East and south-east in poor condition

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

East and south-east in poor condition

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

East and south-east in poor condition

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

East in poor condition and declining

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

East in poor condition

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

Turtles

This component is now included in a different summary

North and east in poor condition (greater understanding in east region)

Year(s): 
2011
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Sea snakes

This component is now included in a different summary

East in very poor condition and declining

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

Populations increasing

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

Dolphins and porpoises

This component is now included in a different summary

Populations generally stable, although some are declining in the east and south-east

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

Baleen whales (not including humpbacks)

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.
  • This component is now included in a different summary

Condition and trends are poorly understood for some species, but recovery occurring generally

Year(s): 
2011
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Humpback whales

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.

This component is now included in a different summary

Condition in the east and south-east remains very poor and stable

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

Toothed whales

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.

This component is now included in a different summary

 

Condition and trends are poorly understood

Year(s): 
2011
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Fur seals

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.
  • This component is now included in a different summary

Assessed only in the south-west and east

Year(s): 
2011
2
Improving
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Australian sea lions

This assessment summary component has changed in 2016. 

  • To maintain consistency with the subsection header (species groups) and consistency across assessments only species groups were assessed in 2016. Where relevant single species accounts have been provided in greater detail in individual case studies.

This component is now included in a different summary

Assessed in the south-west

Year(s): 
2011
1
Deteriorating
Confidence (in grade): 
Adequate
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Assessed in the south-west and south-east

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

Assessed nine species or population features that principally occur in only one region

Year(s): 
2011
3
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed
Ward T (2011). Marine environment: State and trends of species populations and groups. In: Australia state of the environment 2011, Australian Government Department of the Environment and Energy, Canberra, https://soe.environment.gov.au/assessment-summary-62-state-and-trends-species-populations-and-groups, DOI 10.4226/94/58b657ea7c296