unit 1 Flashcards

Energy conversions underlie all ecological processes. Energy cannot be created; it must come from somewhere. As energy flows through systems, at each step, more of it becomes unusable. The Earth is one interconnected system. Natural systems change over time and space. Biogeochemical systems vary in ability to recover from disturbances.

1
Q

competition

A

interaction is detrimental to both species; intra or interspecific

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2
Q

predation

A

one species is benefits, the other is harmed; one organism consumes another

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3
Q

mutualism

A

both species are benefited

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4
Q

commensalism

A

one species benefits, the other is unaffected

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5
Q

intraspecific

A

within the same species

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6
Q

interspecific

A

between different species

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7
Q

fundamental niche

A

full potential role of an organism with NO competition

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8
Q

realized niche

A

actual role of an organism including predation and competition + resource partitioning

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9
Q

resource partitioning

A

different species in an ecosystem split resources to avoid competition (utilize realized niche)

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10
Q

parasitism

A

one species is benefits, the other is harmed; parasite takes nutrients from host

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11
Q

animal defenses against predation

A

tasting bad, defensive coloration, chemical defenses, mimicry

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12
Q

aposematic coloring

A

warning color to advertise poisonous nature

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13
Q

cryptic coloration

A

camoflage/blending in to hide from predators or ambush prey

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14
Q

chemical defenses

A

bites, stings, poisons

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15
Q

ecosystem

A

biological community of interacting organisms and their physical environment

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16
Q

biotic components

A

living organisms; ex. plants, animals, bacteria

17
Q

abiotic components

A

nonliving; ex. air, water, soil, rock

18
Q

primary productivity

A

rate at which solar energy is converted into organic compounds via photosynthesis (kcal/m^2/yr)

19
Q

gross primary productivity

A

total photosynthesis rate for all AUTOTROPHS

20
Q

net primary productivity

A

GPP - energy lost due to cellular respiration

21
Q

biomes with highest primary productivity

A

tropical and wet biomes, most biodiversity

22
Q

biomes with the lowest primary productivity

A

dry, deserts, lacking in vegetation

23
Q

primary productivity in the ocean

A

low, photosynthesis can only occur where light can reach in the ocean

24
Q

law of entrophy/rule of 10%

A

only 10% of energy stored in one trophic level will be passed to the next trophic level upon consumption

25
Q

positive feedback loop

A

increasing or amplifying change, cannot be reversed

26
Q

negative feedback loop

A

dampening or reversal of a condition, goes up and down in cycles