Ocean Habitats Chapter 12
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Transcript of Ocean Habitats Chapter 12
Ocean HabitatsChapter 12
Animals of the Benthos
98% of marine species are benthic Hydrothermal vents Rocky shore Sandy shore Coral reefs
Coral Reefs of the World(Figure 12-16)
Coral Reefs: Tops in Marine Biodiversity
Coral & Zooxanthellae(Figure 12-14)
Coral Reef Morphology(Figure 12-17)
wave surge, currents, sunlight, water depth
National Marine Sanctuaries
Map courtesy of NOAA National Marine Sanctuary System
The World Ocean Floor
Maps courtesy of National Park of American Samoa
Artwork by Jayne Doucette, Woods Hole Oceanographic Institution
By OrSt grad student Emily Larkin
FBNMS: Some Major Issues Natural & human impacts
– Crown-of-thorns invasion, hurricanes, bleaching– Illegal fishing, sewage outfall
Photos courtesy of NOAA National Marine Sanctuary System
FBNMS: Some Major Issues Prior to 2001…–Sanctuary largely unexplored below depths of ~30-60 m
– no comprehensive documentation of the plants, animals, and submarine topography.
Little is known of tropical “twilight zone” – shelf-edge (50-120 m deep) of coral reef habitats throughout the world
Fagatele Bay National Marine Sanctuary, 2001 bathy
Images courtesy of Kip Evans, Nat. Geographic and Rich Pyle, Bishop Museum
SCUBA / Rebreather Technology
Rebreather Dive Mission, FBNMS, 2001
GIS Terrain Analysis of the Bathymetry
Emily Lundblad, OrSt M.S. Thesis
Emily Lundblad, OrSt M.S. Thesis
More “Ground Truthing”Towboard survey
2005 Hawaii Undersea Research Lab
Submersible DivesR/V Ka‘imikai-o-Kanaloa Pisces V
Map by OrSt grad student Emily Larkin
HURL Cruise KoK0510 Dives
Short program - 3 dives–Taema Bank (2), Fagatele Canyon (1)
32 species of invertebrates IDed
91 species of fish 9 new “records,” i.e., never before seen in American Samoa
Map by former OrSt grad student Emily Larkin
Black-blotched stingray, 100-200 m
Deepsea Coralslive off of the dead
Desmophyllum cristagalli
www.divediscover.whoi.edu