1 / 12

W.E. Eash-Loucks

Sea anemones (Cnidaria: Actiniaria, Corallimorpharia) of the deep northeastern Pacific Ocean: a baseline survey. W.E. Eash-Loucks. University of Kansas – Department of Ecology and Evolutionary Biology and Biodiversity Institute. Why Study Deep Sea Anemones?.

kim
Télécharger la présentation

W.E. Eash-Loucks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sea anemones (Cnidaria: Actiniaria, Corallimorpharia) of the deep northeastern Pacific Ocean: a baseline survey. W.E. Eash-Loucks University of Kansas – Department of Ecology and Evolutionary Biology and Biodiversity Institute

  2. Why Study Deep Sea Anemones? • Very little is known about the fauna and their distribution • Much is known about shallow water anemones • Growing oxygen minimum zone off the coast of Oregon

  3. Oxygen Minimum Zones (OMZs) • ~150 worldwide • Low oxygen • Hypoxia • Anoxia • Below photic zone • Areas where little mixing occurs • Can be natural or manmade http://earthguide.ucsd.edu

  4. The OMZ off the Coast of Oregon • Caused by upwelling • High nutrients • Low oxygen • Strongest in summer • Growing mcbi.org Chan et al., 2007

  5. Effects of OMZ on Marine Life • Increased mortality • Cnidarians have high tolerance to low O2 • Sea anemones are likely to be the last group effected Grantham et al., 2004 Vaquer-Sunyer and Duarte, 2008

  6. Establishing a Baseline • Southern California to British Columbia • 60 – 4,100 m • 1960s – 1970s • Approximately 25 species • 13 studied closely • Large • Abundant

  7. Methods for Species Identification • External Anatomy • Body form and color • Tentacle number and arrangement • Internal Anatomy • Histology • Cnidae etc.usf.edu

  8. Previously Described Species • Metridium farcimen • Paractinostola faeculenta • Anthosactis nomados • Actinauge verrillii • Paraphelliactis pabista

  9. Previously Described Species • Corallimorphus denhartogi • Monactis vestita • Bathyphellia australis • Liponema brevicornis

  10. New/Unidentified Species • Bolocera sp. • Actinoscyphia n. sp. • Sicyonis n. sp. • Member of Family Sagartiidae

  11. Summary • OMZ in northeastern Pacific Ocean poses a threat to marine life • Established baseline of anemone fauna can be used to make conclusions about how anemones are effected by the growing OMZ • Identified 13 of approximately 25 species of deep sea anemones

  12. Acknowledgments • Funding • Department of Ecology and Evolutionary Biology, Travel Fund • Biodiversity Institute, Panorama Society Small Grant • Specimen Loans • Santa Barbara Museum of Natural History • Daphne Fautin

More Related