Osenberg Craig W.

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Last Name
Osenberg
First Name
Craig W.
ORCID
0000-0003-1918-7904

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  • Dataset
    Settlement events and survivorship of six bar wrasse cohorts in the lagoons surrounding the island of Moorea, French Polynesia from 1996-1997 (CDD_in_Reef_Fish project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-06-21) Shima, Jeffrey ; Osenberg, Craig
    Settlement events and survivorship of six bar wrasse cohorts in the lagoons surrounding the island of Moorea, French Polynesia from 1996-1997. Fieldwork was conducted in the lagoons surrounding the island of Moorea, French Polynesia and focused on the six bar wrasse (Thalassoma hardwicke). Researchers made 480 observations of settlement events (i.e., pulses of settlement to individual sites) and monitored survivorship of six bar wrasse cohorts formed by these events. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/727143
  • Article
    Local versus site-level effects of algae on coral microbial communities
    (The Royal Society, 2021-09-15) Briggs, Amy A. ; Brown, Anya L. ; Osenberg, Craig W.
    Microbes influence ecological processes, including the dynamics and health of macro-organisms and their interactions with other species. In coral reefs, microbes mediate negative effects of algae on corals when corals are in contact with algae. However, it is unknown whether these effects extend to larger spatial scales, such as at sites with high algal densities. We investigated how local algal contact and site-level macroalgal cover influenced coral microbial communities in a field study at two islands in French Polynesia, Mo'orea and Mangareva. At 5 sites at each island, we sampled prokaryotic microbial communities (microbiomes) associated with corals, macroalgae, turf algae and water, with coral samples taken from individuals that were isolated from or in contact with turf or macroalgae. Algal contact and macroalgal cover had antagonistic effects on coral microbiome alpha and beta diversity. Additionally, coral microbiomes shifted and became more similar to macroalgal microbiomes at sites with high macroalgal cover and with algal contact, although the microbial taxa that changed varied by island. Our results indicate that coral microbiomes can be affected by algae outside of the coral's immediate vicinity, and local- and site-level effects of algae can obscure each other's effects when both scales are not considered.