The Marine chapter of the 2016 State of the Environment (SoE) report incorporates multiple expert templates developed from
streams of marine data. This metadata record describes the Expert Assessment "The state and trends of non-indigenous/non-endemic
species – number and abundance of introduced species". The full Expert Assessment, including figures and tables (where provided),
is attached to this record. Where available, the Data Stream(s) used to generate this Expert Assessment are accessible through
the "On-line Resources" section of this record.
DESCRIPTION OF ECOLOGICAL PROCESS FOR EXPERT ASSESSMENT
There are over 250 introduced marine plants and animals established in Australian waters (see marine pests.gov.au). Some
have hitch-hiked to Australian waters on the hulls of vessels of all types from yachts to commercial ships, or in their ballast
water. Others have been introduced to support local aquaculture, with the aquarium industry another vector. Some species
are listed on the National Introduced Marine Pest Information System and are assessed under the ‘Number and abundance of
NIMPIS-listed species’ assessment. This assessment covers those species not currently on the list.
DATA STREAM(S) USED IN EXPERT ASSESSMENT
This assessment is based on peer-review papers and reports as well as information on the marine pests website: see http://www.marinepests.gov.au.
2016 SOE ASSESSMENT SUMMARY [see attached Expert Assessment for full details]
• 2016 •
Assessment grade: Good
Assessment trend: Unclear
Confidence grade: Limited evidence or limited consensus
Confidence trend: Evidence or consensus too low to make an assessment
Comparability: Grade and trend are comparable to the 2011 assessment
• 2011 •
CHANGES SINCE 2011 SOE ASSESSMENT
The 2016 assessment is similar to the 2011 assessment. With very little information on most species abundances and no long-term
monitoring of populations with which clear trends could be determined it was considered appropriate to assign a trend of
QUALITY OF DATA USED IN THE ASSESSMENT
Publications are based on the best data available.
CUSTODIAN AND LOCATION OF DATA
Data in individual peer-review papers and reports are the IP of the relevant authors and institutions, marine pests website
copyright Commonwealth of Australia (details of specific data sets used to generate the assessment have not been provided).
METHOD USED TO DETERMINE STATE OR RECENT TREND
There are currently no systemic surveys carried out to determine the abundance of introduced pests. Identification of state
is therefore based on reporting rates of introduced pest species presence only.
When citing this Expert Assessment in a list of references use the following format:
citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data
accessed at (add http link).