Species Interactions ( Interspecific Or Multiple Species That Afe Different) Flashcards
Competition interaction
(-/-) two or more species compete for a resource that is in short supply
Predation
(+/-) one species the predator kills and eats the other , prey.
Herbivory
(+/-) An herbivore eats part of a plant or alga
Parasitism
(+/-)
The parasite derived is nourishment from a second organism the host which is harmed
Mutualism
(+-)
Symbiosis
Individuals of two or more species live in close contact with one another different types 3 types. Commensalism
Mutualism
Parasitism
Commensalism
(+\0)
One species benefits while the other is unaffected by the other
This is the rarest symbiosis
Facilitation
(++) (+\0)
Helping out usually a plant that’s a facilitator and has an positive effect on the other without contact.
Not a symbiosis
Niche
Originally meant a recess associated with location
In biology it’s location and a complete set of resources that organisms uses and how much along with location
What do niches allow for species
For species to minimize competition
Realized niche
The actually niche they occupy
Fundamental niche
Could be bigger than the realized but depends on some sort of restriction
Cryptic coloration
Hard to understand is cryptic
Harder to see coloration in the environment so predators can’t find you
Aposematic okoratoon
Easily seen in their environment to indicate something. Can indicate that the species is dangerous like being poisonous. Intentionally standing out
Batesian mimicked
A harmless species mimics a harmful one. Like a harmless caterpillar mimicking the aposematic coloration of a venomous snake
Mullerian mimickry
Two unpalatable species mimic each other like things telling their predators that they don’t taste well
What are the two components to biodiversity
Species richness- how many different species live there
Relative abundance -
Greater biodiversity
Has more relative abundance of species. The ratio is better.
Food chains
Trophic structure
Food chains at the base must have
Producers that carbon fixate. So consumers can consume them for the organic material
Primary consumers
Consumers that eat the producers
Secondary eat primary
Tertiary eat the secondary
Quaternary
Food web
Food chains hooked together in different ways
More real cause organisms eat different things but at the base is producers
Phytoplankton
Plankton that use photosynthesis and at the bottom of food chains/ web
The top of food chains are
Are in the most precarious position because they rely on everything below it, so if something goes extinct they will be effected greatly
The dominant species
The species that is more abundant.
Very inportant.
Can be good for others or bad but ecologically inportant
Keystone
Of high importance. Hold things together like the top of an arch
For the health of the ecosystem.
The sphenoid bone in the cranium is considered the keystone
Usually not the dominant species
Ecosystem engineer
Not conscious thought. Like a beaver that creates a dam. Transforms the ecosystem or changes the landscape
Intermediate disturbance hypothesis
Disturbance- any unusual occurance in an ecosystem
Intermediate meaning not too low or high
Biodiversity will be maximized at an intermediate level of disturbance
Niches can open up with disturbance so other species can occupy those niches
Succession
The process of recovery from major disturbances.
Categories of succession
Primary and secondary.
Primary is for really bad disturbances so not many things. Soil is destroyed
Secondary. Not as bad and the soil is still in place
Primary succession example constantly occurring is
Glacial movement that scrapes soil away and the things that were there are gone and must start over
Lichens
Symbiotic relationship between fungus and microscopic producer on bare rock and produces soil. Soil contains particles of rock and organic materials from the producers. Allows plants to grow
Human caused disturbances
There are becoming more intense
Overfishing and deforestation are examples
Trolling is a type of fishing that includes huge nets that pull everything off the ocean floor. Huge disturbance