Ecology Flashcards Preview

BIO FINAL > Ecology > Flashcards

Flashcards in Ecology Deck (17)
Loading flashcards...
1

Negative, Negative interactions

competition

2

Negative, Positive interaction

predation

3

positive, positive interactions

mutualism

4

Neural mechanisms

physiological signaling mechanisms rapid/brief

5

Hormonal mechanisms

signals secreted into blood stream, slower/long term

6

Signals

influence predator/prey relationships, help organisms locate food sources/ideal habitats/potential mates

7

competition among species

Interspecific: may be important in determining diversity of species in an area (barnacles)

8

competition within a species

Intraspecific: intense because all members of species have the same needs

9

Niche

Set of environmental conditions/factors that allow populations of organisms to remain viable

10

Fundamental niche

Established by physical (abiotic) conditions: environment etc. Larger than realized niche

11

Realized Niche

Established by biotic/abiotic conditions: ability to survive because of certain characteristics

12

coevolution

the influence of closely related species on each other during evolution

13

commensalism

One organism benefits and the other remains neutral

14

mutualism

Each individual benefits
Obligate (must have: clownfish/sea anenome)
Facultative (take it/leave it: Acacia ants + acacia trees)

15

Symbiosis

living together

16

Trophic cascades

energy flows through trophic cascades: primary producers --> multiple levels of consumers

17

Bioamplification

Happens due to pollution, increase in substance as move up food chain