MARS FINAL EXAM study guide

MARS FINAL EXAM study guide - MARS FINAL EXAM STUDY GUIDE...

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MARS FINAL EXAM – STUDY GUIDE **Know the PACMAN model… I have it in my notes – u MUST know it **Also know the seas diagram… also in my notes… **If you see two stars next to something, it is coming out of my class notes… MARINE REPTILES - Snakes 1 – Turtles 2 – Crocodiles -Derived from terrestrial ancestors so have challenges associated with air breathing, locomotion and salt exclusion SEASNAKES 1 - Inquisitive - Highly toxic venom but largely inoffensive - Paddle-shaped tail - Nostrils on top of snout 2 - Nostril flaps & snug mouth scales - Specialized diet - Shed skin more frequently than land snakes - Pelamis – yellow warning coloration 3 - Can swallow large prey - can be under water for up to 2 hours 0 - can dive very deep, very fast - Aipysurus laevis - tail light sensitive 1 LIFE HISTORY OF GREEN TURTLE **Male turtles swim around and bang… female turtles spend a few months close to shore. In two week intervals, she bones in the water, and crawls on shore and lays eggs. There’s a few months of nesting, then back to feeding and boning, and then to laying eggs again.
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OPEN OCEAN ENVIRONMENTS (LEVELS AND CHARACTERISTICS) Epipelagic zone = The Surface 1 - regulates climate and provides food and other resources 2 - surface layer of the pelagic (epipelagic) => zone from the surface to about 200 m. 1 - relatively warm and well lit 2 - component of the photic zone, the layer from the surface to the depth where light limits photosynthesis 3 - Surface waters beyond the coastal shelf (neritic) are known as the oceanic part of the epipelagic Pelagic realm = The open sea Mesopelagic - animals can also be separated into two groups: 1.Those that migrate to the surface at night (strong bones) 2.Those that remain in the mesopelagic (sit and wait predetors) Abyssopelagic(The Deep Sea) –There is no need for counter shading in the perpetual dark and many deep sea animals (especially zooplankton) are either drab grey or off-white in color - Most deep sea animals are blind or have very small eyes The ocean floor –The deep-sea benthos is dominated by deposit feeders. <= Notice the amounts of animals in the different layers. Also, should give you a visual of where the layers of the ocean are, as well as how big, what lives in them, etc. Know basic facts – ex. Names and depths of oceanic layers, and if there’s a lot of plankton and animals in them, etc.
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MAJOR GROUPS OF PHYTOPLANKTON –Most single or simple chains of microalgae (phytoplankton) – contribute to almost all the photosynthesis in the open ocean, => half the oxygen in the atmosphere –Most important are diatoms, dinoflagellates and several types nanoplankton Zooplankton –Phytoplankton base to oceanic food web –Herbivores feed on the phytoplankton –Vital link to the rest of the community
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This note was uploaded on 04/10/2008 for the course MARS 2005 taught by Professor Gregeddie during the Three '08 term at Queensland.

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MARS FINAL EXAM study guide - MARS FINAL EXAM STUDY GUIDE...

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