Wildlife Rehabilitation Flashcards
ecosystem ecology
study of biotic and abiotic interactions with naturally and human-induced impacts
biotic
living organisms
abiotic
non-living organisms
nutrient cycle
continual cycle of chemical production consuming products and decomposing products
describes the use, movement, and recycling of nutrients in the environment
micro-climates
usually have predictable changes
ex: seasons occur consistently from year to year
el nino
warm water
la nina
cold water
what causes el nino and la nina?
caused by a disruption in the trade wind direction which then affects our jet streams and then the ocean
ex: el nino causes loss of cold nutrient dense waters —> phytoplankton declines which is the main food supply for fish, birds, and marine mammals and those at the top of the food chain
what may be caused by el nino and la nina?
famine, flooding, hurricanes, drought, fires
el nino events can become stronger and turn into super el ninos which can mean extreme floods and droughts
community ecology
study of individual populations and the interactions of species within natural communities
we can look at the ecosystem as a whole or at smaller habitats or ecosystems
biological characteristics and resource use
when species with biological characteristics occur together they can exhibit complementary resource use
they may use different resources or the same resources but at different times which leads to less competition
predator-prey relationship
density of prey population affects the birth and death rates of predator population
losing important predators increases the prey population
parasites and predator-prey relationship
parasites are like predators and impact their prey
male biased parasitism
males tend to be more heavily parasitized which may be because males tend to be larger so they can carry a larger parasite load or because testosterone is immunosuppressive
commensalism
relationship where 1 species benefits without affecting the other
mutualism
relationship where both species benefit
what are the 2 parts of biodiversity?
- richness: number of species in a habitat
- evenness: abundance of each species in a habitat
Simpson’s diversity index results
near 0 = low diversity
near 1 = high diversity
what are the 3 types of population dispersion?
uniform, random, clumped
uniform population dispersion
ex: penguins
they maintain this by being active territoriality
random population dispersion
ex: daisies
based on where the seeds fall
clumped population dispersion
ex: elephants
stay in groups
carrying capacity
maximum population of a given species that can survive indefinitely in a given environment
this is dependent on food, water, competition, predation, and disease; these are always changing so carrying capacity is always changing
effects of exceeding carrying capacity
has a compounding effect
too many animals in a habitat —> over-browse and kill shrubs
K (constant) selected species
long gestation, maturation, and lifespan
species that increase rapidly while food/habitat are abundant and slow down as factors like lower birth rate and decreased food availability come into play, as rate of population growth slows the population reaches a stable level
R selected species
short gestation, maturation, lifespan
population increases rapidly to the point where it exhausts its resources
mortality becomes the main regulator and population will collapse to a low level; when resources are replenished the population begins to rise again and the process is repeated
ethogram
quantitative description of an animal’s normal behavior
1. characterize the range of behaviors you see; build a catalog of behaviors without interpreting the behavior; make notation of habitat, other animals in habitat, time/temp/lighting, info about animal (sex, nutritional state, etc)
2. quantify information and apply it