NRES 348 Quiz #1 with Complete Solutions
Edge Effects
~Outer boundary of patch has different environmental conditions such as micro climate or light
penetration
~may function as ecological traps owing to comparatively great rates of predation or other
interspecific interactions
Demographic Stochasticity
~varability in population growth rates arising from random differences among individuals in
survival and reproduction within a season
~even though it is important only in populations that are fairly small
Environmental Stochasticity
~variation in birth and death rates from one season to the next in response to weather, disease,
competition, predation, or other factors external to the population
Stochastic
of or pertaining to a process involving a randomly determined sequence of observations
Metapopulation
~series of semi-isolated populations with some level of migration and/or gene flow among them
~local sub-populations may go extinct and then be recolonized (rescue effect)
Population Source
patch of habitat where reproduction exceeds mortality
, Population Sink
patch of habitat where reproduction is less than mortality
Recruitment
~reflection of the number of young produced during the breeding season and enter into the
breeding population
~may not reflect the number of young produced within the population if young do not exhibit
natal philopatry
Biotic Homogenization
where generalist, "weedy" species will become relatively more common and ecological
specialists will lose out
Manipulative Management
acts on population, either changing its numbers by direct means of influencing numbers by
indirect means of altering food supply, habitat, etc
Custodial Management
preventive or protective management; aims to minimize external influences on the population
and its habitat
Life History
traits that describe the life cycle of an organism (birth, maturation, reproduction, death)
Lacey Act
Edge Effects
~Outer boundary of patch has different environmental conditions such as micro climate or light
penetration
~may function as ecological traps owing to comparatively great rates of predation or other
interspecific interactions
Demographic Stochasticity
~varability in population growth rates arising from random differences among individuals in
survival and reproduction within a season
~even though it is important only in populations that are fairly small
Environmental Stochasticity
~variation in birth and death rates from one season to the next in response to weather, disease,
competition, predation, or other factors external to the population
Stochastic
of or pertaining to a process involving a randomly determined sequence of observations
Metapopulation
~series of semi-isolated populations with some level of migration and/or gene flow among them
~local sub-populations may go extinct and then be recolonized (rescue effect)
Population Source
patch of habitat where reproduction exceeds mortality
, Population Sink
patch of habitat where reproduction is less than mortality
Recruitment
~reflection of the number of young produced during the breeding season and enter into the
breeding population
~may not reflect the number of young produced within the population if young do not exhibit
natal philopatry
Biotic Homogenization
where generalist, "weedy" species will become relatively more common and ecological
specialists will lose out
Manipulative Management
acts on population, either changing its numbers by direct means of influencing numbers by
indirect means of altering food supply, habitat, etc
Custodial Management
preventive or protective management; aims to minimize external influences on the population
and its habitat
Life History
traits that describe the life cycle of an organism (birth, maturation, reproduction, death)
Lacey Act
