Lecture1Intro&Terminology

Lecture1Intro&Terminology - MSCI/BIOL 450...

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MSCI/BIOL 450 Principles of Biological Oceanography Lecture 1 Intro & Terminology
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Goal of biological oceanography To describe how physics (hydrography and light), chemistry (nutrients) and biology (primary production, food web processes) interact to determine: distributions composition (species or biochemical) biogeochemical activities trophic interactions of marine communities
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Unifying themes Quantitative approach Explicit consideration of interacting factors (physics, chemistry, biology) Focus populations, communities and ecosystems NOT on individuals
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Ecosystems Upwelling ecosystems Oligotrophic gyres Deep sea Coastal and estuarine ecosystems
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What’s in the water? Viruses, bacteria (heterotrophic, chemosynthetic), phytoplankton (procaryotes eukaryotes), zooplankton (micro, meso, macro), nekton 1 μ m 10 μ m 100 μ m 1mm 1cm 10cm 10m 1m 0.1 μ m 1min 1h 1d 1wk 1mo 1yr 10yr 100yr 1sec Size Temporal scale B a c t e r i Z o p l n k P h y F s M m ls
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Plankton = incapable of sustained, directed horizontal movement Thalassiosira weissflogii Crab zoea jelly “wandering” or “drifting”
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Nekton = Active swimmers www.shellbackdon.com
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Benthos Inhabitants of the benthic environment (bottom of a body of water) www.ucsc.edu/opers/ scuba/ Pleurosigma Microbial mat community – Salt Pond, Bahamas
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Components of the Plankton 1. Virioplankton: Viruses (phages: e.g., bacteriophage cyanophage) From L.M. Proctor and J. A Fuhrman 1990, Nature 343: 60 - 62 0.1 µm
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Similarities based on 16s ribosomal RNA (not morphology) From Carl Woese, presented at http://nai.arc.nasa.gov/news_stories/news_detail.cfm?ID=274
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This note was uploaded on 12/12/2011 for the course BIOL 450 taught by Professor Ms.richardson during the Fall '10 term at South Carolina.

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Lecture1Intro&Terminology - MSCI/BIOL 450...

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