Fig 1.
Map of Argentina indicating the location of the study area.
Regions where bottlenose dolphins were studied between the 1970’s and 1980’s are also indicated (north to south: Bahía Samborombón (BS), San Clemente del Tuyú (SCT), Mar del Plata (MDP), Miramar (MM), San José Gulf (SJG)). The circle on the right indicates the location of the study area Bahía San Antonio
Table 1.
Hours of photo-identification survey effort over the different seasons (in brackets the number of additional opportunistic photo-identification surveys).
Table 2.
Duration of primary periods (consecutive days) and the number of secondary samples (survey trips) within each primary period used in Pollock’s Robust Design, and number of adult dolphins identified or re-identified within each primary period.
Table 3.
Robust Design candidate models for survival probability (s), capture probability (p), temporary emigration probability (γ) and abundance (N).
Fig 2.
Total abundance estimates with 95%CI for the study area of 2009, 2010 and 2011, corrected for the proportion of unmarked individuals in the population.
Table 4.
Seasonal abundance estimates of bottlenose dolphins in the study area.
Table 5.
List of regional bottlenose dolphin populations (Tursiops sp.) reported to be declining or vulnerable (defined as containing fewer than 1000 mature individuals [76]).