Disturbance event - frequency
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mean number of disturbances that occur within a particular time interval
How can parasites regulate host populations?
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function as density-dependent regulators, outbreak when host N is high,
host N decline quickly resulting in oscillating (around each other) host-
parasite pops
,What does aijNj mean?
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converts individuals of j into equivalent units of species i
Ecosystem inputs
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exchanges from surrounding environment into ecosystem
Zones of production and decomposition - aquatic
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plants do not occupy zones of production and decomposition, need water
mixing to bring nutrients to surface waters
Indirect interactions
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species do not directly interact but influence each other through a direct
interaction with another species
,By-catch
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unused catch discarded at sea, target and non-target species
What rate does decomposition determine?
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rate of transformation of organic to inorganic form
Habitat patch - edge/border
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unstable environment with high environmental heterogeneity
Conserving biodiversity - protect target areas
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biodiversity hotspot approach, define hotspots
, 1st law of thermodynamics and ecosystems
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energy cannot be created or destroyed (is constant) in an ecosystem,
energy from sun harvest by 1 producers and used to form chemical bonds
in carbon-based compounds
Top down (trophic cascade)
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occurs when the top predator is reduced, carnivore intermediate species
increases, herbivore intermediate species decreases, basal species
increases
Conserving biodiversity - function-based
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keystone species, conserve species that actively determine biological
structure
Stability (resistance)
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mean number of disturbances that occur within a particular time interval
How can parasites regulate host populations?
Give this one a try later!
function as density-dependent regulators, outbreak when host N is high,
host N decline quickly resulting in oscillating (around each other) host-
parasite pops
,What does aijNj mean?
Give this one a try later!
converts individuals of j into equivalent units of species i
Ecosystem inputs
Give this one a try later!
exchanges from surrounding environment into ecosystem
Zones of production and decomposition - aquatic
Give this one a try later!
plants do not occupy zones of production and decomposition, need water
mixing to bring nutrients to surface waters
Indirect interactions
Give this one a try later!
species do not directly interact but influence each other through a direct
interaction with another species
,By-catch
Give this one a try later!
unused catch discarded at sea, target and non-target species
What rate does decomposition determine?
Give this one a try later!
rate of transformation of organic to inorganic form
Habitat patch - edge/border
Give this one a try later!
unstable environment with high environmental heterogeneity
Conserving biodiversity - protect target areas
Give this one a try later!
biodiversity hotspot approach, define hotspots
, 1st law of thermodynamics and ecosystems
Give this one a try later!
energy cannot be created or destroyed (is constant) in an ecosystem,
energy from sun harvest by 1 producers and used to form chemical bonds
in carbon-based compounds
Top down (trophic cascade)
Give this one a try later!
occurs when the top predator is reduced, carnivore intermediate species
increases, herbivore intermediate species decreases, basal species
increases
Conserving biodiversity - function-based
Give this one a try later!
keystone species, conserve species that actively determine biological
structure
Stability (resistance)
Give this one a try later!
