Upload
lizette-thrall
View
215
Download
1
Tags:
Embed Size (px)
Citation preview
Ecosystem health index and the annual
report card
Ben Longstaff
4-August-2005
Presentation to TMAW
• All major waterways from Noosa All major waterways from Noosa River to the NSW BorderRiver to the NSW Border
• 250 water quality sites (monthly)250 water quality sites (monthly)
• 250 sewage plume mapping sites 250 sewage plume mapping sites (annual)(annual)
• 20 seagrass monitoring sites20 seagrass monitoring sites
• 6 coral monitoring sites6 coral monitoring sites
• Maps of entire region (Bay and estuaries)• Most water quality parameters
Annual mediansMonthly Uncertainty in prediction
Spatial presentation
Regional overviews
• Comparison between waterways• Prioritization of action
0.0 1.0 2.0 3.0
BremerBrisbane
AlbertLogan
PimpamaCaboolture
PineNoosa
MaroochyNerang
MooloolahCurrumbinCoomera
TallebudgeraPumicestoneCoombabah
Bramble BayDeception
Broadw aterSouthern
Waterloo BayCentral BayEastern Bay
Eastern
Nutrient Concentration (mg/L)
Total Nitrogen (mg/L)
Total Phosphorus (mg/L)
**
**
**
*
*STP discharge into system
Local waterway synthesisEach year all data for one waterway analyzed,
synthesized and presented
Ecosystem Health Report Card
Moreton Bay (Australia):– Annual release since 1999
– The most important tool for evaluating and communicating health of the regions waterways
– Significantly raised awareness of waterways health
– Often directed / focused management action
– Impetus for some costly (but environmentally important) intervention
High profile media release:
Media Interest Public Awareness Political Interest Action
Report Card needs to be robust and defendable
Proportion of the waterways area that complies with the established objectives (EHI)
Report CardRating
Wat
erw
ay /
regi
on o
f bay A
C
F
D
B
How the report card grades are generatedHow the report card grades are generated
• 80% of grade determination based on Ecosystem Health Index (EHI)• 20% of grade determination based on interpretation of data not compatible with EHI approach / expert opionio
Annual
SEQRWQMS water quality objectives
Central Bay
Eastern Bay
Bramble Bay
Eastern BanksWaterloo Bay
Nth Deception Bay
Sth Deception Bay
1 year of monthly monitoring data
Spatial interpolation of annual median
Area of compliance calculated
Ecosystem health indicator (e.g. Secchi depth)
Central Bay
Eastern Bay
Bramble Bay
Eastern BanksWaterloo Bay
Nth Deception Bay
Sth Deception Bay
Central Bay
Eastern Bay
Bramble Bay
Eastern BanksWaterloo Bay
Nth Deception Bay
Sth Deception Bay
Central Bay
Eastern Bay
Bramble Bay
Eastern BanksWaterloo Bay
Nth Deception Bay
Sth Deception Bay
Central Bay
Eastern Bay
Bramble Bay
Eastern BanksWaterloo Bay
Nth Deception Bay
Sth Deception Bay
Process repeated for
each indicator and averaged
Central Bay
Eastern Bay
Bramble Bay
Eastern BanksWaterloo Bay
Nth Deception Bay
Sth Deception Bay
Ecosystem Health Index (80%)Ecosystem Health Index (80%)Proportion of the waterways area that complies with the established objectives
Estuaries
Moreton Bay
Different indicators for estuaries and Moreton Bay….
Region of Moreton Bay EHI Chl_a TN delN Secchi LyngbyaBramble Bay 0.64 0.75 0.75 0.59 0.55 N/ACentral Bay 0.93 0.75 1.00 1.00 0.97 0.94Deception Bay 0.81 0.77 0.92 0.99 0.61 0.70
1 = 100% of area complies with objective0 = 0% of the area complies with the objective
Ecosystem Heath Index
• Spatial compliance of key indicators
Proportion of the waterways area that complies with the established objectives (EHI)
Report CardRating
Wat
erw
ay /
regi
on o
f bay A
C
F
D
B
How the report card grades are generatedHow the report card grades are generated
• 80% of grade determination based on Ecosystem Health Index (EHI)• 20% of grade determination based on interpretation of data not compatible with EHI approach
Communication
• Report card– Grades– Management response– Regional summaries
• Annual report– Linked to report card– Regional overview– Local waterway summaries