Studying Organisms In Ecosystems Flashcards
What factors affect distribution of organisms on earth
Abiotic factors
Seasons are a thing why?
The earth is tilted
What creates biomes around the earth
Temperature and precipitation
Abiotic factors have a __________ with organisms found within a biome
Direct relationship
What is the littoral zone
A zone where there is enough light for footed plants to go in a lake
What is the limnetic zone
Open water, no roots and floating organisms can perform photosynthesis
What is the benthic zone
Bottom of the lake, covered by mud
Profundal zone
Deep, below light penetration zone of lake where bottom dwelling organisms live
What is a niche?
The role a species plays in a community
Two species can share a ___________ as long as they have a different niche
Habitat
What are some abiotic limiting factors?
Sunlight
Temperature
Precipitation
How to sample organisms in a ecosystem?
1.Use a transect(long, narrow rectangular area)
2. Count the number of individuals found within a certain distance
3. Use a larger area to study mobile organisms
