MT1 Content Flashcards
(22 cards)
what is ecology
study of biodiversity, the living and non-living parts of the world and the interaction between them
what are the 5 core ecological processes
species requirements
species interactions
dispersal
evolution
stochasticity
what are species requirements
the range of conditions and resources needed for an individual to survive and reproduce
what is the fundamental niche
species requirements that determine which environments a species will persist in
what happens if only one environmental variable is not met?
species falls outside fundamental niche and will likely not survive
definition of conditions
neither finite nor depletable factors that affect how organisms perform in their environment
examples of conditions
temperature, moisture
definition of resources
finite and depletable factors that species require for energy and materials to survive and reproduce
examples of resources
prey availability
coil nitrogen content
true or false; resources are only abiotic
false; can alo be biotic factors of the environment
definition of species interactions
interactions among individuals from same or different species that affect fitness
what is the realized niche?
conditions in which an individual experiences non-zero fitness in the presence of interacting species
how will an antagonistic interaction affect the realized niche?
realized niche < fundamental niche
how would a beneficial interaction affect the realized niche?
realized niche => fundamental niche
what is dispersal?
the one-way movement of individuals from the location in which they were born to another location
movements that are NOT dispersal;
foraging activities
migration
what is passive dispersal
dispersal reliant on surrounding medium or biotic interactions to disperse
examples of passive dispersal
wind
ocean current
waste
what is active dispersal
dispersal in animals that can move on their own
allows them to make choices about when to leave and where to go
pros of passive dispersal over active dispersal
higher potential for long-dsitance dispersal
saves energy
pros of active dispersal over passive dispersal
can leave a poor habitat
can make informed choices about habitat
what is a dispersal kernal
probability distribution of of dispersal distancefrom parent
