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Flashcards in Ecology Part II Deck (541)
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1

Major communities

Aquatic
Terrestrial

2

Aquatic communities

Marine
Freshwater

3

Marine communities

estuaries, intertidal, sub-tidal kelp beds, pelagic, deep sea, coral reefs

4

Terrestrial communities

tundra, temperate coniferous forests, temperate deciduous forests, grasslands, deserts, tropical forests

5

temperate coniferous forests

Boreal/Taiga

6

Estuaries are

partially enclosed body of water where freshwater flows into the ocean and mixes with salt water

7

Estuaries have

variable salinity, pH, sediments, nutrients, temperature
large # niches, biodiversity, productivity

8

important estuary ecology

major stopover for migratory birds throughout world
ex. fraser estuary

9

Different types of tides

MHWS, MHWN, MLWN, MLWS
Mean high/low water neap/spring

10

smaller high/low tides

neap tide

11

larger high/low tides

spring tides

12

Emersion curve

MHWS, MHWN, MLWN, MLWS (ft) vs. % exposure to air (0-100)
MLWS- pretty much 0%
curve tends towards 100 towards MHWS

13

Subtidal kelp bed ecology

high PP on planet
physical protection to shoreline communities
foraging/shelter for large # species

14

Types of benthic communities

Hot vents
Glass Sponge reefs
Deep water coral reefs (bioherms)

15

Arctic marine communities

frozen ocean surrounded by land
~4000m depth, ~3m ice
upper 15m low salinity
layering of Atl./Pac. water
high summer plankton, cod, seals

16

Antarctic communities

frozen continent surrounded by ocean
~98% ice up to 2km thick
mountainous- up4500m
low diversity- bacteria, lichen, penguins
ocean high PP and diversity

17

lake classifications

oligotrophic
dysotrophic
mesotrophic
eutrophic

18

oligotrophic

clear water - low productivity

19

dystrophic

stained lakes - low productivity

20

mesotrophic

intermediate productivity

21

eutrophic

high productivity

22

lake stratification

separation of lakes into three layers- Epilimnion, Metalimnion, Hypolimnion
due to density change with temperature

23

epilimnion

top of the lake

24

metalimnion

thermocline
middle layer- may change depth throughout the day

25

hypolimnion

bottom layer

26

dimictic lake

lake water turns over during the spring and the fall due to the higher density colder water and of 4ºC water, lower density of ice and warm water

27

Tundra characteristics

3-6mnths dark, north America, north Europe/Asia ice/snow/permafrost
surface soil .5m thaws in summer
3 strata

28

tundra strata

soild
ground
low shrubs

29

tundra ecology

cold-hardy plants
aquatic/terrestrial insects
shorebirds, waterfowl, seasonal
hare, fox, wolves, caribou, grizz, polar bear

30

Temperate coniferous forests found

central interior north america/europe/asia