Part of the reason there are more land species is a

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Unformatted text preview: evel Observational Observe, no manipulation Advantages: ecologically and evolutionarily relevant, multiple variables & interactions, the scope of inference can be larger in the observational manner, new discoveries Disadvantages: expensive, hard to determine cause and effect (all are correlational), not repeatable, harder to interpret (stats, analysis) The vast majority of marine science is through observational studies. Part of the reason there are more land species is a bias: progress slow, problems with marine research. Difficulties: Large area (3D) Inaccessible Expensive Dynamic Politics Methods: Plankton nets Grab sampling- sediment, invertebra...
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This document was uploaded on 03/23/2014 for the course BIOL 403 at Georgetown.

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