Concepts in Natural Resources. Concepts we will discuss Concepts we will discuss Renewable Resource...

Concepts in Natural Resources

Concepts we will discussConcepts we will discuss Renewable ResourceRenewable Resource Nonrenewable ResourceNonrenewable Resource EnvironmentEnvironment

Concepts we will discuss (continued)Concepts we will discuss (continued) EcologyEcology EcosystemEcosystem BiomeBiome

Concepts we will discuss (continued)Concepts we will discuss (continued) Preservation vs. ConservationPreservation vs. Conservation Carrying CapacityCarrying Capacity Food ChainsFood Chains

Renewable ResourceRenewable Resource Resources that can be replaced by human Resources that can be replaced by human

effortsefforts Can be Renewable forever depending on Can be Renewable forever depending on

the management of the resourcethe management of the resource Example: Forests and Forest ProductsExample: Forests and Forest Products

Non-Renewable ResourcesNon-Renewable Resources Limited resources that cannot be replaced Limited resources that cannot be replaced

once they are goneonce they are gone Careful use and extend the length of their Careful use and extend the length of their

availabilityavailability Example: Petroleum and Petroleum Example: Petroleum and Petroleum

productsproducts

EnvironmentEnvironment All of the physical surroundings of a All of the physical surroundings of a

species species

EcologyEcology Study of the complex relationships among Study of the complex relationships among

living things and their environmentliving things and their environment

EcosystemEcosystem Any partially self-contained environmental Any partially self-contained environmental

and living thingand living thing Example: A lake, a large valley, or a forestExample: A lake, a large valley, or a forest

BiomeBiome A major land area characterized by A major land area characterized by

dominant plant life formsdominant plant life forms Established by altitude and rainfallEstablished by altitude and rainfall

Concepts in Natural ResourcesBiomes (continued)

Concepts in Natural Resources PreservationPreservation An attempt to prevent An attempt to prevent

the use of a natural the use of a natural resourceresource

Aim is to “preserve” Aim is to “preserve” or keep it intact as it is or keep it intact as it is or wasor was

ConservationConservation An attempt to use a An attempt to use a

natural resource in a natural resource in a way to minimize waterway to minimize water

Aim is to maintain the Aim is to maintain the resource in as good of resource in as good of condition as possiblecondition as possible

Carrying CapacityCarrying Capacity The ability of an ecosystem to provide food The ability of an ecosystem to provide food

and shelter for a given population.and shelter for a given population.

Food WebFood Web A group of plants and/ or animals A group of plants and/ or animals related to each other by the fact that one related to each other by the fact that one

feeds or depends for food on the nextfeeds or depends for food on the next

Concepts in Natural ResourcesFood Web (continued) Pyramidal in shapePyramidal in shape Many producersMany producers Fewer ConsumersFewer Consumers Fewer still predatorsFewer still predators

Concepts of Natural ResourcesFood Web (continued)

Concepts of Natural Resources

ProducersProducers• Also known Also known

as autotrophsas autotrophs• Make their Make their

own food own food

ConsumersConsumers• Also known Also known

as hetertrophsas hetertrophs• Organisms Organisms

that feed on that feed on other speciesother species

Concepts of Natural Resources Food Chains (Continued)Food Chains (Continued)

CarnivoresCarnivores• First-order CarnivoresFirst-order Carnivores

–Carnivores that feed on Carnivores that feed on herbivoresherbivores

• Second-order CarnivoresSecond-order Carnivores–Carnivores that feed on first Carnivores that feed on first

order carnivoresorder carnivores

Food Chains (continued)Food Chains (continued) OmnivoresOmnivores

““All eaters”All eaters”These critters are both herbivores and These critters are both herbivores and

carnivorescarnivores

Concepts of Natural Resources

Food Chains (continued)Food Chains (continued) PredatorsPredators

Carnivores that feed on live animalsCarnivores that feed on live animalsExamples: OwlsExamples: Owls

Food Chains (continued)Food Chains (continued) PreyPrey

Animals that are eaten by predatorsAnimals that are eaten by predatorsExamples: MiceExamples: Mice

Food Chains (continued)Food Chains (continued) ScavengersScavengers

Critters that feed on dead organismsCritters that feed on dead organismsBoth plants and animalsBoth plants and animalsExamples: snails, crayfish, crowExamples: snails, crayfish, crow

Food Chains (continued)Food Chains (continued) SaprophytesSaprophytes

Fungi that feed on dead organismsFungi that feed on dead organismsExamples: Fungi, bacteriaExamples: Fungi, bacteria

Food Chains (continued)Food Chains (continued) DecomposerDecomposer

Break down and feed on non-living Break down and feed on non-living organic matterorganic matter

Examples: Yeasts, moldsExamples: Yeasts, molds

Concepts in Natural Resources. Concepts we will discuss Concepts we will discuss Renewable Resource...

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