Please enable JavaScript.
Coggle requires JavaScript to display documents.
Community Ecology (concepts (climax community (patch undergoes succesion,…
Community Ecology
concepts
community
group
of species that occur together
same time
same place
successison
predictable
sequence of changes
climax community
patch undergoes succesion
occurs in many communties
stability returns
community restoration
reducing wolves
onto Yellowstone
encouraging migration
of bears
mountain lions
interrupting nature
habitat loss
habitat fragmentation
beneficial interactions between species
mutualism
various organisms interacting
in a community
ways that is beneficial
interaction between two organisms
both benefit
facilitation
organisms
helps another without receiving benefit
first organisms
facilitates
presence of the other
nurse plants
alter small area
of habitat immediately
below themselves
more favorable to the survival of
seedlings other plants
compared to plants
not below nurse plants
primary succession
organisms become established
on newly created substrates
volcanoes
produce ash fields
metapopulations in patchy environments
metapopulation local population
interconnected by migration
and gene flow
metapopulation
source habitat
high quality patch
sink habitat
low quality patch
fugitive species
survives by
colonizing new patches
flourishing temporarily
colonizing new patches before
it dies out of old ones
predator- prey interactions
one Predator , One prey
zero growth isocline
line
indicates population stability
paradox of enrichment
important factor
in loss of species
diversity when
habitat improves
maximum sustained yield
keeping population
at a specific point
fixed effort harvesting
population health is determined by
fish
deer
fixed quota harvesting
fisherman or hunters
harvest amount
predator selection among multiple prey
optimal foraging theory
interaction examining
understand why
herbivores eat some plants and ignore the others
optimal diet model
this makes four predictions
apparent competition
increase of one plant
and decrease of the other
completion between species
exploitation competition
organisms consume shared resource
interference competition
organsims restricts
another organisms access
to resources
invasive
increase from low population
resource
any substance or factor
leads to increased growth rate
consumed by an organism
interconnectedness of species: food chains and food webs
food web
network of numerous
interrelationships
energy flow web
trace how energy flows
through a community
food chain
direct line of consumption
keystone species
presence
or absence of certain species
diversity
diversity and scale
scale
diversity we should be studying
species area relationship
relationship
between are and
species richness
species abundance distribution
number of species
in abundance
diversity and latitude
checklist
national parks
wildlife preserves
