Term
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Definition
species richness + species evenness |
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Term
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Definition
number of different species in an area |
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Term
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Definition
the abundance of individuals within each of those species |
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Term
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Definition
how many potential ecological niches could occur, how they differ/resemble each other, and how the species within them interact |
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Term
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Definition
species diversity is highest in the tropics and declines as it moves north and south toward the poles |
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Term
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Definition
those species that normally and thrive in a particular community |
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Term
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Definition
other species that migrate into or are deliberately or accidently introduced into a community |
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Term
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Definition
species that serve as early warnings of damage to an ecosystem |
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Term
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Definition
a species that play a key role in its eco-system |
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Term
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Definition
(type of keystone species) species that play a major role in shaping communities by creating and enhancing their habitat |
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Term
interspecific competition |
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Definition
competition between species for a shared resource. Instead of fighting, this means its a race to adapt best |
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Term
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Definition
when creatures using the same resource, evolve to share it |
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Term
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Definition
members of one species feed directly on all or part of a living organism |
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Term
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Definition
occurs when one species (the parasite) feeds on part of another (the host) who is harmed by the interaction |
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Term
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Definition
two species or a network of species interact in a way that benefits both or all |
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Term
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Definition
a relationship that benefits one species but has little, or no effect on the other species |
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Term
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Definition
the gradual change of species composition in an area |
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Term
thre patters of population distribution |
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Definition
1. clumping 2. uniform dispersion 3. random dispersion |
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Term
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Definition
(birth rate + immigration) - (death rate + emmigration) |
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Term
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Definition
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Term
intrinsic rate of increase (r) |
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Definition
rate at which a population would grow if it had unlimited resources |
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Term
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Definition
all factors that act to limit growth of a population |
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Term
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Definition
environmental resistance + biotic potential |
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Term
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Definition
high rate of population increase, usually small, parents do not care for children |
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Term
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Definition
small number of offspring, usually larger and live longer |
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Term
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Definition
regulate their body temperature by producing heat from within the body (warm blooded) |
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Term
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Definition
use heat from outside their body (cold-blooded) |
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Term
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Definition
each individual is formed directly from the zygote and the development is high predictable |
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Term
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Definition
have zygotes that develop into a module |
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Term
intraspecific competition |
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Definition
competition occurring within the same species |
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Term
interspecific competition |
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Definition
competition occurring between different species |
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Term
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Definition
competition between plants and toxins |
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Term
three assumptions of lotka-volterra predator-prey model |
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Definition
1.there is one predator and one prey species in the interactions 2. prety numbers decrease if predators rise and vice versa 3. predator numbers increase when prey increases, and decreases when they fall |
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