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- W2015306770 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 294:181-188 (2005) - doi:10.3354/meps294181 Size matters: bleaching dynamics of the coral Oculina patagonica N. Shenkar1,*, M. Fine2, Y. Loya1 1Department of Zoology, The George S. Wise Faculty of Life Sciences and the Porter Super-Center for Ecological and Environmental Studies, Tel-Aviv University, Tel Aviv 69978, Israel2The Leon Recanati Institute for Maritime Studies, University of Haifa, Mount Carmel, Haifa 31905, Israel *Email: levinn@post.tau.ac.il ABSTRACT: A 2-yr continuous photographic monitoring of a tagged population of the encrusting coral Oculina patagonica in the Mediterranean was conducted to study intra-colonial bleaching dynamics and the relationship between bleaching, mortality, and colony size. Surveys of non-tagged colonies showed that during the peak bleaching season (August, sea surface temperature = 31°C), non-bleached colonies were frequently found to be small colonies averaging 4.6 ± 2.3 cm in diameter. Within tagged colonies, percent bleached surface area was correlated to water temperature. In colonies that underwent bleaching, the perimeter of the colony was affected first, and, as water temperatures increased, bleaching progressed toward the colony center. During the summer months, partial mortality occurred in the perimeter region of bleached colonies in 22% of the tagged colonies and 25% of the tagged colonies died; 40% of the colonies that died belonged to the largest size group. This partial mortality caused an average decline of 46 ± 27% in the average colony size, resulting in a shift to a smaller size group within the monitored population. Since in this species, colonies as small as 2 cm in diameter are reproductive, bleaching may have a less significant effect on the reproductive fitness of the small size groups in the population. The high mortality of large colonies, high survivorship of the small colonies, and the decline in colony size, due to partial mortality, suggest that, in the case of bleaching in populations of O. patagonica, small colony size is advantageous. KEY WORDS: Coral bleaching · Mediterranean Sea · Population dynamics · Oculina patagonica Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 294. Online publication date: June 09, 2005 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2005 Inter-Research." @default.
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- W2015306770 title "Size matters: bleaching dynamics of the coral Oculina patagonica" @default.
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