Interdependence of Life: Ecosystems and Biogeochemical Cycles

These flashcards cover the key concepts from the lecture on ecosystems and biogeochemical cycles, including terminology, functions, and processes within environmental science.

What is the definition of an ecosystem?

An ecosystem includes all members of a community, along with their physical and chemical environments.

What promotes stability and productivity in ecosystems?

Diversity promotes stability and productivity.

Name three types of terrestrial biomes.

Tropical Rainforests, Savannas, Deserts.

What is primary production?

Primary production is the conversion of light energy to chemical energy, primarily through photosynthesis.

What are the two types of autotrophs in an ecosystem?

Producers (Autotrophs) and Consumers (Heterotrophs).

What does the Pyramid of Energy illustrate?

The Pyramid of Energy illustrates the energy flow through different trophic levels in an ecosystem.

What is net primary production?

Net primary production is the energy that is accumulated in plant biomass after accounting for the energy used in maintenance and growth.

What cycles of materials between the environment and organisms?

Biogeochemical Cycles.

What are the main components of the water cycle?

Evaporation, precipitation, and runoff.

How do plants contribute to the nitrogen cycle?

Plants obtain nitrogen from nitrogen-fixing bacteria and pass it to other organisms through the food chain.

What are the major ways carbon is cycled in the environment?

Photosynthesis, respiration, decomposition, and combustion of fossil fuels.

In the phosphorus cycle, what are the main sources of phosphorus?

Inorganic and organic phosphorus from natural and human activities.