Olive Ridley Sea Turtle Hatching Success as a Function of Microbial Abundance and the Microenvironment of In Situ Nest Sand at Ostional, Costa Rica

Figure 2

Mean (± SE) partial pressure of oxygen (pO₂, kPa) in nests throughout the incubation period for nests located in the high-density, tidal-wash, and low-density nesting areas of the beach (). The pO₂ within nests in the high-nest-density area was significantly lower than that in other areas of the beach in both the first and the second half of incubation ( and , resp.).