Biomes
Characteristics of a grassland biome
What are very few trees, moderate rainfall, or seasonal drought?
What is a primary producer?
Only this percent of energy is transferred from one trophic level to the next
What is 10%?
The term for the cycling of water through an ecosystem
What is the hydrologic cycle?
Two factors that influence primary productivity in an ecosystem
What are light availability, nutrients, temperature, water availabilty, or carbon dioxide levels?
Two key threats facing aquatic biomes
What are pollution, climate change, overfishing, habitat destruction, or invasive species?
An organism that is vital to supporting the entire food web
What is a keystone species?
Energy is lost as this as it is transferred to the next trophic level
What is heat?
The largest impact humans have on the carbon cycle
What are CO2 emissions from fossil fuel burning?
The rate of photo- or chemosynthesis in an ecosystem
What is primary productivity?
The type of vegetation in temperate deciduous forests
What are trees that lose their leaves seasonally (oak, maple, beech, etc)?
Describe a secondary consumer
What is an organism that eats primary consumers?
What is the sun?
The only biogeochemical cycle that does not have an atmospheric component
What is the phosphorus cycle?
The organism responsible for most of the world's atmospheric oxygen
What are phytoplankton?
The terrestrial biome with the largest temperature range
What is a desert?
Describe the flow of energy in a food chain
What is energy flows from producers to consumers to decomposers?
The amount of biomass of tertiary consumers if there is 10,000 kg of biomass at the producer level
The process that converts nitrogen gas into ammonia
What is nitrogen fixation?
The difference between GPP and NPP
What is NPP accounts for respiration by producers?
The countries that have the most tropical rainforest
What are Brazil and Democratic Republic of the Congo? (Indonesia is third)
The classification of organism typically not included in a food web
What are detritivores?
The way energy flow is different in aquatic vs. terrestrial systems
The process that converts nitrates back into nitrogen gas
What is denitrification?
The main difference in primary productivity in terrestrial vs. aquatic systems
What is terrestrial systems have more light availability, and therefore higher GPP?