LAST 5 BASIC CONCEPTS Flashcards
what is the 6th concept?
natural resources
materials and energy in nature that are essential or useful to humans
renewable
any natural resource that is recycled or replaced constantly by nature
renewable
depleted much faster than they are formed
non-renewable
limited in supply and cannot be used sustainably
non-renewable
example of inexhaustible
sun/light energy
what is the 7th concept?
natural/ecosystem services
services that the nature provides for people
provisional
ecosystems themselves couldn’t be sustained without the consistency of underlying natural processes
supporting services
without supporting services, provisional, regulating, and cultural services wouldn’t exist
supporting services
non-material benefit that contributes to the development and cultural advancement of people, building of knowledge and the spreading of ideas, creativity born from interactions with nature, and recreation
cultural
plants clean air and filter water, bacteria decompose wastes, bees pollinate flowers, and tree roots hold soil in place to prevent erosion
regulating
what is the 8th concept?
natural capital
natural resources + natural services + sun
natural capital
rate at which an ecosystem’s producers convert solar energy into chemical energy in the form of biomass found in their tissues
gross primary productivity
- dry weight of all organic matter contained in its organisms
- transferred from one trophic level to another
biomass
rate at which producers use photosynthesis to produce and store chemical energy minus the rate at which they use some of this stored chemical energy through aerobic respiration
net primary productivity
measures how fast producers can produce chemical energy that is stored in their tissue and potentially available to other organisms in an ecosystem
net primary productivity
types of consumers
herbivores, carnivores, omnivores
who are the primary consumers
herbivore, feeds on producers
who are the secondary consumers
carnivores feed on herbivores
who are the tertiary consumer
carnivores that feed on other carnivores