Chapter 54 Flashcards
Examples of Interspecific relationships
Competition
Predation
Herbivory
Symbiosis
Interspecific interactions
Relationships between species in a community
Competition
-/- interaction
Occurs when species compete for a resource in short supply
What can strong competition lead to?
Competitive exclusion
Competitive Exclusion
Local elimination of a competing species
A species total use of biotic and abiotic resources
Ecological niche
Resource partitioning
Differentiation of ecological niche
What does resource partitioning enable?
Similar species to coexist in a community
Predation
+/- interaction
Occurs when a species (predator) kills and eats the prey
Predation feeding adaptions
Claws Teeth Fangs Stingers Poison
Cryptic coloration
Camouflage
Herbivory
+/- interaction
Occurs when a herbivore eats parts of plant or alga
Symbiosis
A relationship where 2 or more species live in direct and intimate contact with one another
Mutualism
Commensalism
Parasitism
Mutualism
+/+ interaction
Obligate & Facultative
Obligative mutualism
1 species cannot survive without the other
Facultative mutualism
Both species can survive alone
Commensalism
+/o interaction
One species benefits and the other is apparently unaffected
Parasitism
\+/- interaction One organism (parasite) derives nourishment from another organism (host) which is harmed in the process
Endoparasites
Live within the body of the host
Extoparasites
Live on the external surface of the host
Fundamental features of community structures
Species diversity
Trophic structures
Species diversity
Variety of organisms that make up the community
Tropic structures
Feeding relationships between organisms in a community
4 kinds of species that have an impact on community structure
Dominant
Invasive
Keystone
Foundation
