Key Terms
This group of organisms create their own food through photosynthesis.
Producers
This term refers to cold regions of the world, regions with this description are on the opposite temperature range of the tropics.
Arctic or boreal
What direction does the arrow point in a food web or chain?
Toward the consumer (the one eating)
What term refers to an organisms role or job in an ecosystem?
Niche
What is the difference between a food chain and food web?
Food web shows multiple possible food sources/predators/ is more complex
What is the difference between a community and population?
Community includes all the organisms in an area while population is just one species.
What biome do we live in?
Temperate Deciduous Forest
How much energy is transferred up to the next trophic level at each step?
10%
What term refers to organisms with similar roles diversifying by changing diets, time of activity, or location?
Niche partitioning
How can an areas geography change its biome?
Higher elevations have lower temperatures
What is detritus?
Waste, dead matter
Why are aquatic ecosystems not defined by the climate like terrestrial biomes?
Rainfall does not affect them very much, resistant to temperature changes.
Draw a trophic pyramid including the following organisms from the ankarana region: Crocodiles, sanford lemurs, figs, fruit bats, crowned lemurs. Label each group
Producers = figs
primary consumers = both lemurs + bats
secondary consumer = crocodiles
What happens when two organisms have the same or very similar niches?
Competition
What is the difference between an alpine tundra and arctic tundra?
Arctic tundras have a layer of permafrost.
A __________ is defined as an area classified by its annual climate and organisms found within it.
Biome
Draw a simple biome chart, label the both axes, and show where a tropical desert would be.
Axes = avg temp + avg precip
Tropical desert at the highest temp and lowest precipitation range
Describe why there is a loss of energy at each stage of the trophic chart.
What 4 key attributes determine an organisms niche?
Diet, predators, time active, habitat.
What is an estuary?
Where rivers/streams meet the ocean
Give an example of a microclimate
Answers will vary, microclimate = an isolated area within a biome or ecosystem with a unique temp or precipitation
This aquatic ecosystem is defined by having acidic soil and being dominated by mosses and carnivorous plant.
Bog
Draw a 10 organism food web for our local ecosystem.
Answers will vary but must include only local species
Give an example of temporal niche partitioning
Bees and moths consume the same foods but bees are active during the day and moths at night.
Gazelles, wildebeests, and zebras all eat the same grasses but at different months of the year.
What are the 3 possible results for organisms competition for the same role (niche)?
Extinction/death, adaptation/evolve, emigration