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1

Marine biology

study of life in the sea- hypersaline environment

2

Taxonomy

how organisms are grouped based on shared/similar characteristics

3

systematics

key to identifying characteristics

4

order of taxonomy

domain, kingdom, phylum, class, order, family, genus, species

5

higher taxonomy-
lower in the taxonomy-

-more conclusive
-more exclusive

6

Species

a group of interbreeding organism, reproductively isolated form others, that have potential to produce unique offspring

7

subduction zone

area where one crustal plate slides on top of the other. they always occur at the deepest part of the ocean.

8

trenches

6000 m

9

tonga trench

10,000 m

10

marianas trench

11,122 mt

11

trenches can be caused by

collision of two oceanic plates

12

shelf break

near shore or shelf zone

13

continental slope

there will be a continental rise (sediments accumulate over time) like long dead organisms. deeper you go the older you get. after the rise, things level out at abyssal plain. its not all smooth. there are rocks and canyons.

14

all of ur major oceanic bases (pacific, atlantic, indian, arctic, antarctic ocean) are

interconnected around antarctica. water moves from antarctic north.

15

why is water is the way it is

1. small molecule. more reactive.
2. polar. can stick to other molecules
3. Covalent bond bw O and H. takes a lot of energy to separate.
high boiling point: 100 deg C
high freezing point: 0 deg C
CO2- boils at -80deg C. they are almost the same size, but diff properties.

16

large bodies of h20 moderate the climate of nearby land masses because

large bodies of water become heat sink, water becomes “resistant to change”
—> Poikilotherms/ectotherm

17

homeotherm/endotherm

(constant)
more ectotherms than homeotherms.

18

most important parts of salinity

sodium and chloride

19

Sechi disk

-clarity or turbidity
-sechi disk used to assess primary productivity which is conducted by photoautotrophs (phytoplankton) converting inorganic carbon (CO2) to sugar (C6H12O6) and O2

20

02 minimum layer

bc net oxygen level is 0. Oxygen minimum layer in subtropical regions due to higher respiration
-primary productivity is approximately equal to respiration.

21

Coriolis effect (force)

objects in motion are deflect due to earth's rotation. bc of coriolis effect, surface currents move at a 45 angle from wind direction.

22

which oceanic base is larger?

north pacific.

23

upwelling

driving warm nutrient off shore. displaces water around and below it. cold water.

24

why is ocean blue?

0 primary productivity at 1000 m. light penetrance dependent on plankton biomass.

25

crypsis

blending coloration. seen in heteropods (transparent)

26

wave

transfer of wind energy to water. The energy moves through the water, but the water does not move.

27

rogue wave

-wave of unexplained origin
-maybe the result of wave amplification

28

tsunami

-not ‘tidal wave’
—> major undersea perturbation
—volcanic eruption earthquake “land slide”

29

spring tides

Earth, sun, and moon align
2 times a month
we get higher high tides and lower low tides

30

Neap tides

two times each month