Presentation is loading. Please wait.

Presentation is loading. Please wait.

The Deep Sea By Brady Romero.

Similar presentations


Presentation on theme: "The Deep Sea By Brady Romero."— Presentation transcript:

1 The Deep Sea By Brady Romero

2 Intro Undocumented What is it?
Physically Environmentally Biologically

3 Physically Beneath continental shelf Originally thought as flat
Order of shelf? Originally thought as flat Trench benthic zone?

4 Our problems We know nothing Bathysnap Expensive Hard Time consuming
Inaccurate Bathysnap Camera Bathysnack

5 Environment Light Temperature Dissolved oxygen Order? Food?
Exceptions? Temperature Constant -1* to 4* Celsius Dissolved oxygen Minimum under _____ Then constant

6 Environment Currents Hydrostatic pressure Keep measurements constant
Three types Tidal currents Oceanic conveyor Coriolis effect Hydrostatic pressure _atmospheres for _m Organisms adapt

7 Environment Sediment Mainly soft, fine mud Thick 2 classes
Inorganic Biogenous Percentage? Types? Dependent on surface Whales Important We suck even more

8 Food supply Production Dissolved Organic Matter
Chemosynthesis Sulfur compounds Mainly allochthonous Rely on POM 1-3%primary production reach seabed Dissolved Organic Matter Needed for carbon

9 Food supply Large food falls
Carcasses Important food source Scavengers Unpredictable Long times between food sources Plant falls provide C Terrestrial matter is unused Think there is other food

10 Food supply POM from euphotic Timing of food 3 main groups
Fecal pellets Moults Marine snow Grows like snow Timing of food Directly associated with surface blooms

11 Organisms Slope Distribution Size of organisms
Hard to determine changes Distribution More in shallow then deep Size of organisms Generally Direct relationship Gigantism

12 Organisms Diversity Composition Species Forbes Don’t know much
Assume little Composition Realized nice Small overlap of animal Species 1.4 million species on Earth

13 Organisms Mobile megafauna Echinoderms Crustaceans Benthopelagic fish
Lobsters Ontogenetic Benthopelagic fish

14 Hydrothermal vents First vent observed Atochthonous Thermophiles
1977 Galapagos rift By Robert Ballard Atochthonous Chemosynthesis Thermophiles Super Hyper Cold seeps

15 Hydrothermal vents Vestimentarians Trophosome Lecitrophicism Worms
Special organ Holds bacteria Lecitrophicism Short larval stage


Download ppt "The Deep Sea By Brady Romero."

Similar presentations


Ads by Google