Seasonal and Inter-annual changes in Marine Biogeographic Provinces

1
Seasonal and Inter-annualchanges in Marine
Biogeographic Provinces

• Determination of provinces
• Validation
• Maps Time-series

2
Static, manual provinces

• Longhurst (1995, 1998, 2006)

3
Questions

• Do automatic maps match community expectations
  (Longhurst)?
• What are seasonal and inter-annual trends in
  province areas?
• How does chlorophyll, primary production change
  over time within provinces?

4
Automatic unsupervised classification
SeaWiFSMODIS/AquaAVHRR SST

• Oliver et al (2004) JGR Oceans

5
2006 Annual mean
6
ENSO indexes
Province areas (sum of 3)
2003 Jan
2006 Dec
7
Jan 2006

• Gyre area
• Jan 1998
• To
• Dec 2006

8
Combined Global Gyres
Total C fixation (g / d) Trend
Combined Tropical Seas
Jan 1998 Dec 2006
9
More Information

• Andrew Irwin airwin_at_mta.ca
• Poster 227
• Matt Oliver moliver_at_udel.edu
• Poster 218
• Oral Friday 1115 Biodiversity Ecological
  Forecasting
• Oliver et al (2004) JGR Oceans