Marine Organisms Flashcards
Why are there fewer marine species than land species?
The oceans conditions stay relatively the same so there is less of a need to adapt and make new adaptations. This causes there to be less species.
Benthic vs Pelagic percentage distribution?
98% benthic and 2% pelagic
How are living things classified?
o By whom they are?
o By where they live?
o By size?
o By what they do?
o By trophic level?
What are the taxonomic units/groups?
Kingdom
Phylum
Class
Order
Family
Genus
Species
Benefit of scientific names
A universal name so no confusion
What is plankton?
Organisms that float around and make up most of the Earths biomass
Nekton
Organisms that can independently swim
Benthos
Organisms that live on the ocean floor
4 major types of plankton
Phytoplankton, Zooplankton, Holoplankton, Meroplankton
What type of organisms are responsible for Harmful Algal Blooms (HAB)?
Dinoflagellates (a microscopic algae) by making toxins or growing too dense.
What type of plankton is thought to produce ~50% of marine photo synthesizers?
Phytoplankton
Epifauna
Live on the surface of the seafloor; generally attached to a rock
Infauna
Live in buried sediments
Nektobenthos
Crawl or swim on the seafloor
Which environment is more stable, land or ocean?
Ocean, because it experiences less change