Monterey Bay Aquarium Research Institute
CANON Initiative
Seabird Stranding Graph

conceptual illustration showing the Correspondence between the spatial and temporal patterns of seabird strandings and red tide during November-December 2007 in Monterey Bay

Black circles represent the approximate location and magnitude of morbidity and mortality, and satellite data represent the red tide for panels (A–C). Three pulses of seabird stranding were observed: A) focused along the northern bay, B) focused in the southcentral portion of the bay, and C) in both northern and central portions of the bay. In (A) and (B) the MERIS data indicate extreme bloom conditions above MCI level of ,0.3. Although ideal for red tide detection, MERIS coverage was not adequate for the third pulse. In (C) the reddish discoloration on the MODIS true color image during the third pulse (28 Nov) shows the spatial extent and location of the red tide. Panels (D) and (E) show increased seabird stranding during the November–December 2007 red tide event. Light bars are 10-year average (1997–2006) standardized monthly stranding counts on nine Monterey Bay beaches. Dark bars are 2007 counts for western/Clark’s grebes and Northern fulmar, the species most affected during the mass-stranding event. Panel (D) corresponds to the first stranding event, while panel (E) corresponds to the second and third waves of strandings.


Last updated: Aug. 17, 2010