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13:18
Data Collection on Marine Litter Ingestion in Sea Turtles and Thresholds for Good Environmental Status
Published on: May 18, 2019
Sea turtle nesting distributions and oceanographic constraints on hatchling migration
Nathan F Putman1, John M Bane, Kenneth J Lohmann
1Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA. nputman@email.unc.edu
Proceedings. Biological Sciences
|June 25, 2010
Summary
Loggerhead sea turtle nesting density increases closer to the Gulf Stream System (GSS). Proximity to this ocean current significantly influences sea turtle nesting distributions, impacting offspring survival.
Area of Science:
- Marine Biology
- Ecology
- Oceanography
Background:
- Offspring survival is crucial for species' reproductive success.
- Marine animals with long-distance migrations may favor reproductive sites near facilitating ocean currents.
- Selection may disadvantage reproductive areas hindering offspring emigration.
Purpose of the Study:
- To investigate the influence of ocean currents on marine animal reproductive distributions.
- To analyze loggerhead sea turtle (Caretta caretta) nest abundance in relation to the Gulf Stream System (GSS).
Main Methods:
- Analyzed loggerhead sea turtle nest abundance along the southeastern US coast.
- Correlated nest density with distance to the Gulf Stream System (GSS).
Main Results:
- Nest density significantly increases as the distance to the GSS decreases.
- Distance to the GSS explains over 90% of spatial variation in regional nest density.
- Even at local scales, distance to the GSS explains at least 38% of variance in nest density.
Conclusions:
- Proximity to favorable ocean currents, like the GSS, is a strong determinant of sea turtle nesting distributions.
- These findings suggest that ocean currents may similarly influence the abundance patterns of other marine species.
- Ecological and environmental factors, particularly ocean currents, play a vital role in shaping marine species' reproductive success.
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