Please enable JavaScript.
Coggle requires JavaScript to display documents.
Community Ecology (Concepts of Community Ecology (Community (group of…
Community Ecology
Concepts of Community Ecology
Community
group of species that occur together at the same time and place
Succesion
sequence of changes that alter a habitat for the better of some organisms
Climax Community
pioneers come into an area after a disturbance doing so makes the area suitable for organisms that were once there before
Community Restoration
people helping an environment thrive instead of killing it off
Habitat Fragmentation
conversion of large habitat into several smaller ones
Habitat Loss
result of processes that cause a habitat to no longer support the species diversity it had in its natural state
Predator-Prey Interactions
One Predator, One Prey
Functional Response
feeding rate and handling time of a predator
Prey-dependent
feeding rate depends on the amount of prey that the individuals have
Zero growth isocline
line indicating population density
Paradox of Enrichment
when there is not enough prey for the the predator to live off of eventually leading to loss of both species
Maximum sustained yield
theoretical point of view where we could harvest just enough of the species to level out
Fixed effort harvesting
population health is determined by how much can be harvested with a particular amount of effort
Fixed quota harvesting
a certain amount of species is able to be harvested
Predator Selection Among Multiple Prey
Ultimate foraging theory
interactions in an attempt to understand why herbivores eat the plants they do while ignoring others
Optimal diet model
an optimal foraging diet
Competition Between Species
Exploitation competition
organisms actually consume a shared resource, making it less available for the organism
Interface competition
one organism restricts access to resources even though the first might not be using it
Invasive
if a species increases from a low population density even with competitors present
resource
any substance or factor that can lead to increased growth rates as its availability is increased and that is consumed by an organism
Apparent Competition
Apparent competition
plants not actually competing for and using a resource
Beneficial Interactions between species
Mutualism
two organisms interact in a beneficial way for both
Facilitation
one organism helps another without receiving and benefit
Nurse Plants
interaction in a way that one species alters the environment in a way that enhances the survival and reproduction of a second
Primary Succesion
organisms become established on newly created substrates
Diversity
Checklist
count of species that are present in a specific area
Diversity and Scale
Scale
size of areas being studied
Species-area Relationship
relationship between area and the species richness in it
Species abundance distribution
a plot of the number of species in a region into various abundance classes
Diversity and Latitude
Metapopulations in Patchy Environments
Metapopulation
several populations interconnected by migration and gene flow
Source habitat
High quality patch
Sink habitat
low quality patch
Fugitive Species
one species survives by colonizing new patches, flourishing temporarily, and the colonizing a new patch before dying out
Interconnectedness of species: Food Chains and Food Webs
Food Chain
direct line of consumption
Food web
trace the prey of top carnivores and then trace the food sources of each of those prey species into a network
Energy flow web
map that traces the energy flow of consumption through species
Keystone Species
presence or absence of certain species, this dramatically affects the structure to their community
