期刊
MARINE POLLUTION BULLETIN
卷 115, 期 1-2, 页码 29-38出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.11.029
关键词
Oil; Seagrass; San Francisco Bay; Cosco Busan; Eelgrass; Zostera marina; PAM
资金
- NOAA (NOAA Fisheries Restoration Center / Damage Assessment, Southwest Region)
- NOAA (National Ocean Service, National Centers for Coastal Ocean Science)
- Cosco Busan Trustee Council
- CSA Ocean Sciences Inc.
Existing literature illustrates inconsistent responses of seagrasses to oil exposure, both in the field and in the laboratory. Here, we add a new study that combined morphometric, demographic and photophysiology assessments to determine the potential oiling impacts to eelgrass (Zostera marina) from the 2007 Cosco Busan event in San Francisco Bay. Shoot densities, reproductive status, and rhizome elongation of Z. marina were examined at sites with pre-spill data, and eelgrass photosynthetic efficiency was measured post-spill. Shoot densities and percent elongation of rhizome internodes formed after the oil spill varied but with no consistent relationship to adjacent shoreline cleanup assessment team (SCAT) oiling categories. Similarly, differences in seagrass photosynthetic efficiency were not consistent with SCAT oiling categories. While thresholds for negative impacts on seagrass in general remain to be defined, conclusive oiling indicators for degree and duration of exposure would be important considerations and need examination under controlled study. (C) 2016 Elsevier Ltd. All rights reserved.
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