L16 Flashcards
community ecology
study of interactions between populations of different species within a specific area
Community
set or grouping of interacting species
Niche Theory
multidimensional space in which a species occurs and resources are partitioned
community assembly
the study of the processes that shape the identity and abundance of species within ecological communities
fundamental interactions in a community
detritivory, herbivory, predation, parasitism
Shredders= CPOM
leaf litter
wood
Collectors= FPOM
biofilm
fecal pellets
Grazers= Primary producers
Green algae
macrophytes
RCC headstream
CPOM
shredders, collectors
periphyton
P<1
trout
RCC midstream
FPOM
collectors, grazers
hydrophytes/macroalgae
P>1
perch
RCC endstream
FPOM
collectors
phytoplankton
P<1
catfish
dorsal
ventral
anterior
posterior
inferior mouth
down feeding
superior mouth
feeding above
terminal
in front
fish adaptations:
swim bladder
streamline body
spines
paired fins
ecology
study of the effects of the biotic and abiotic conditions on the reproductive success of individuals
abundance and distribution of individuals will depend on:
average reproduction success
patterns of movement
fish assemblage
number of species that co-exist in the same location
How do we define a group of individuals that coexist together?
- natural boundaries
- aribitrary boundaries (human)
- Geographic distance
fecundity
of viable eggs laid by female
components of fitness
growth, survival, and fecundity
fish life cycle
eggs
alevins
fry, parr
adults
life history
age specific traits or factors directly affecting an
individual’s reproductive success
Life history elements (species-species)
- pattern of development and growth
- Lifespan
- timing and quantity of reproduction
Type 1 survivorship
few offspring, high survivorship
Type 2 survivorship
constant survivorship or risk of mortality
Type 3 survivorship
many offspring but low survivorship
