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https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts1 The Ocean Accounts
Using EMUs as Spatial Units for Ocean Accounting
Issue 1: Spatial Units and Ecosystem Classification
Frank YrleYilun Luo
Kavinda Gunasekara
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts2
The concept: EMUs and Spatial Units
The Ocean Accounts
Shallow / Epipelagic (0 - <200m)
Moderate Depth / Mesopelagic (200 - <1,000m)
Deep / Bathypelagic (1000 - <4,000m)
Very Deep / Abyssopelagic (≥4,000m)
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts3 The Ocean Accounts
16,520
Polygons
1,749
Combinations
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts4
What we looked at
Spatial Unit: Overlay of EMUs
Ecosystem: Coral Reefs (Warm water)
Conditions: Aragonite Saturation State / Temperature
The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts5 The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts6 The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts7 The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts8 The Ocean Accounts
Spatial Units that contain at-risk coral
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts9 The Ocean Accounts
EMU No. EMU Name
18 Shallow, Warm, Normal Salinity, Moderate Oxygen, Low Nitrate,
Low Phosphate, Low Silicate
24 Shallow, Warm, Normal Salinity, Moderate Oxygen, Low Nitrate,
Low Phosphate, Low Silicate
10 Moderate Depth, Cold, Normal Salinity, Very Low Oxygen, High
Nitrate, Low Phosphate, Low Silicate
26 Moderate Depth, Cool, Normal Salinity, Low Oxygen, Medium
Nitrate, Low Phosphate, Low Silicate
13 Deep, Very Cold, Normal Salinity, Low Oxygen, High Nitrate,
Medium Phosphate, High Silicate
36 Deep, Very Cold, Normal Salinity, Moderate Oxygen, Medium
Nitrate, Low Phosphate, Low Silicate
37 Deep, Very Cold, Normal Salinity, Moderate Oxygen, High
Nitrate, Low Phosphate, Medium Silicate
EMUs Present in Spatial Units
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts10
EMUs 18 & 24 (121 total)
The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts11
EMUs 18, 24, 26 (75 total)
The Ocean Accounts
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EMUs 18, 24, 10, 26 (87 total)
The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts13
EMUs 18, 24, 10, 26, 37 (30 total)
The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts14
EMUs 18, 24, 26, 13, 36, 37 (10 total)
The Ocean Accounts
https://www.unescap.org/events/asia-and-pacific-regional-expert-workshop-ocean-accounts15 The Ocean Accounts
Conclusions
Using Overlay of EMUs as spatial units
- difficult from overlapping of EMUs at same depth level
- Break down EMUs to finer classification of depth level?
Thank you
