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The Strange Summer of 2005 from a Nearshore Perspective

The Strange Summer of 2005 from a Nearshore Perspective Jack Barth 1 , Francis Chan 1 , Patrick Drake 2 , Chris Gotschalk 3 , Anthony Kirincich 1 , Jane Lubchenco 1 , Bruce Menge 1 , Margaret McManus 4,2 , Libe Washburn 3 1 Oregon State University 2 University of California Santa Cruz

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The Strange Summer of 2005 from a Nearshore Perspective

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  1. The Strange Summer of 2005 from a Nearshore Perspective Jack Barth1, Francis Chan1, Patrick Drake2, Chris Gotschalk3, Anthony Kirincich1, Jane Lubchenco1, Bruce Menge1, Margaret McManus4,2, Libe Washburn3 1Oregon State University 2University of California Santa Cruz 3University of California Santa Barbara 4University of Hawaii PISCO

  2. Spring transition Interannual variability in wind stress Equatorward, Upwelling favorable 2005 2000 Cumulative wind stress since Spring Transition Fall transition Barth/Pierce (OSU)

  3. 2000 Barth et al. (2005)

  4. 2005 Barth/Pierce (OSU)

  5. Spring transition Interannual variability in wind stress Equatorward, Upwelling favorable Cumulative wind stress since Spring Transition Fall transition Barth/Pierce (OSU)

  6. Annual cycle of northward wind stress (monthly means 1985-2005) at Tatoosh, Newport, Monterey and Pt. Conception Barth/Pierce (OSU)

  7. 48.4N 44.6N 37.4N 34.3N Barth/Pierce (OSU)

  8. HSU PISCO

  9. Barth/Kirincich (PISCO-OSU)

  10. PISCO

  11. Fig 1 2005 Chlorophyll just off the shore Chan/Nielsen (PISCO-OSU)

  12. Fig 2 2005 Chlorophyll anomaly Chan/Nielsen (PISCO-OSU)

  13. Fig 3 2005 Chlorophyll time series Chan (PISCO-OSU)

  14. Fig 4 2005 nitrate+nitrite just off the shore Chan/Nielsen (PISCO-OSU)

  15. Fig 5 2005 nitrate+nitrite anomalies Chan/Nielsen (PISCO-OSU)

  16. Fig 6 2005 N+N (mM) N+N (mM) N+N (mM) N+N time series N+N (mM) N+N (mM) Chan (PISCO-OSU)

  17. Phytoplankton assemblage shift: Five weeks of sampling in Monterey Bay revealed differences in the types of phytoplankton inhabiting the bay; dinoflagellates were dominant in 2005, while diatoms were dominant in a similar study in 2002. (M. McManus) Zooplankton: M. McManus and Van Holliday are working on acoustic data (TAPS) from Monterey Bay. “Five weeks of sampling in Monterey Bay during summer 2005 showed significantly lower zooplankton biomass compared to 2002.”

  18. Timeline: initiation of mussel and barnacle recruitment sampling Tokatee Klootchman Fogarty Creek Yachats Beach Cape Meares Boiler Bay 89 90 91 92 93 94 95 96 97 98 99 00 01 02 02 03 04 05 Seal Rock Cape Arago Strawberry Hill Cape Blanco, Rocky Point Menge/Lubchenco (PISCO-OSU)

  19. 2005 mussels North South Menge/Lubchenco (PISCO-OSU)

  20. Menge/Lubchenco (PISCO-OSU)

  21. Menge/Lubchenco (PISCO-OSU)

  22. 2005 barnacles North South Menge/Lubchenco (PISCO-OSU)

  23. Menge/Lubchenco (PISCO-OSU)

  24. Menge/Lubchenco (PISCO-OSU)

  25. Larval Fish (subtidal monitoring) In the Santa Cruz region, nearshore monitoring of rockfish recruitment showed a failure of recruitment of OYB complex (blue, black, boccacio, widow, olive, yellow). This information compliments offshore trawl surveys by NOAA which likewise showed extremely low numbers of larval rockfish. The later-season recruiting KGB complex (Kelp, Gopher, and Black-and-Yellow rockfish) were observed, suggesting that the impact from the warm water event was not cross-cutting across all rockfish species. (M. Carr, UCSC) In Santa Barbara region, there was likewise a failure of recruitment by the OYB complex- however, in contrast to the Santa Cruz area, NOAA surveys indeed found larval rockfish offshore. This may mean that offshore abundances are not being translated to inshore kelp forests. (J. Caselle, UCSB)

  26. To Do: • finish assembling nearshore time series through fall 2005 (OCNMS, HSU, others?) • quantify phytoplankton assemblage and zooplankton abundance estimates from Monterey Bay • quantify PISCO measurements of larval fish recruitment

  27. EXTRAS

  28. Glider observations 16-17 August 2005 NH-20 NH Line Kosro (OSU) Barth/Shearman/Erofeev (OSU)

  29. Glider observations 16-17 August 2005 9.5 T (°C) 7.5 0 33.8 S depth (m) 33.1 80 26.4 density (kg/m3) 25.6 20 0 Barth/Shearman/Erofeev (OSU) cross-shelf distance (km)

  30. Time series from Santa Cruz Wharf NEOCO station

  31. Warm temperatures off central Oregon OSU PISCO Late spring transition to upwelling Barth/Pierce (OSU)

  32. Glider observations 16-17 August 2005 9.5 T (°C) 7.5 33.8 S 33.1 26.4 Density (kg/m3) 25.6 Barth/Shearman/Erofeev (OSU)

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