ecosystems 05/11/24 Flashcards
revising year 9 content
what is intraspecific competition
competition for a shared resource between two individuals/organisms of the same species
what is interspecific competition
competition for a shared resource between two individuals/organisms of different species
what do plants compete against each other for
- light
- space
- mineral ions
- water
what do animals compete for
- food +/ water
- territory
- mates
what is ecology
the study of organisms and the environment in which they live as well as how they both interact
give 3 examples of abiotic factors which can affect a community
- light intensity
- temperature
- moisture levels
- soil pH and mineral content
- wind intensity and direction
- CO2 levels for PLANTS
- O2 levels for AQUATIC ANIMALS
give 3 examples of biotic factors which could affect a community
- availability of food
- new predators introduced/arriving
- new pathogens (disease)
- one species outcompeting the other so the numbers are no longer sufficient to breed
what is a trophic level
a feeding stage within a food chain
trophic levels can be represented by ___ starting at level ___ with plants and algae
- numbers
- level
plants and algae make their own “food” and are called — ?
producers
— only eat plants/algae and are called — — ?
- herbivores
- primary consumers
—s that eat herbivores are called — — ?
- carnivores
- secondary consumers
carnivores that eat other carivores are called — —
tertiary consumers
carnivores that have no predators are found at the — of the food chain and are called — —
- top of the food chain
- apex predators