Evolution and Biogeography of Deep-Sea Vent and Seep Invertebrates

Author:

Van Dover C. L.1,German C. R.2,Speer K. G.3,Parson L. M.2,Vrijenhoek R. C.4

Affiliation:

1. Biology Department, College of William and Mary, Williamsburg, VA 23187, USA.

2. Southampton Oceanography Centre, Southampton, SO14 3ZH, UK.

3. Oceanography Department, Florida State University, Tallahassee, FL 32306, USA.

4. Monterey Bay Aquarium Research Institute, 7700 Sandholt Road, Moss Landing, CA 95039, USA.

Abstract

Deep-sea hydrothermal vents and cold seeps are submarine springs where nutrient-rich fluids emanate from the sea floor. Vent and seep ecosystems occur in a variety of geological settings throughout the global ocean and support food webs based on chemoautotrophic primary production. Most vent and seep invertebrates arrive at suitable habitats as larvae dispersed by deep-ocean currents. The recent evolution of many vent and seep invertebrate species (<100 million years ago) suggests that Cenozoic tectonic history and oceanic circulation patterns have been important in defining contemporary biogeographic patterns.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference89 articles.

1. C. L. Van Dover The Ecology of Deep-Sea Hydrothermal Vents (Princeton Univ. Press Princeton NJ 2000).

2. R. R. Hessler V. A. Kaharl in Seafloor Hydrothermal Systems: Physical Chemical Biological and Geological Interactions S. E. Humphris R. A. Zierenberg L. S. Mullineaux R. E. Thomson Eds. (American Geophysical Union Washington DC 1995) pp. 72–84.

3. C. K. Paull et al. Science 226 965 (1984).

4. Deep-sea vents and seeps are typically at depths greater than 1000 m well below the euphotic zone. Ambient seawater temperature is 1° to 3°C oxygen concentrations are near saturation and ambient pressure exceeds 100 atm (1 atm 10 −1 m). Anoxic conditions exist at the interface between chemoautotrophic communities and the emanating flux of reduced compounds. Thermally buoyant fluids (from a few degrees to >60°C above ambient) enriched with heavy metals and radioactive elements bathe hydrothermal vent invertebrates. Vent ecosystems are most often associated with bare basalt substrata whereas seeps occur in sedimented environments where accumulations of detrital organic material are present. See (1) for a more complete review.

5. Hecker B., Bull. Biol. Soc. Wash. 6, 465 (1985).

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