Concepts in Natural Resources

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8 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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Concepts in Natural Resources


Natural Resources II

Mr. Cole

Concepts in Natural Resources


Concepts we will discuss


Renewable Resource


Nonrenewable Resource


Environment

Concepts in Natural Resources


Concepts we will discuss (continued)


Ecology


Ecosystem


Biome

Concepts in Natural Resources


Concepts we will discuss (continued)


Preservation vs. Conservation


Carrying Capacity


Food Chains

Concepts in Natural Resources


Renewable Resource


Resources that can be replaced by human
efforts


Can be Renewable forever depending on
the management of the resource


Example: Forests and Forest Products

Concepts in Natural Resources


Non
-
Renewable Resources


Limited resources that cannot be replaced
once they are gone


Careful use and extend the length of their
availability


Example: Petroleum and Petroleum
products

Concepts in Natural Resources


Environment


All of the physical surroundings of a
species



Concepts in Natural Resources


Ecology


Study of the complex relationships
among living things and their
environment


Concepts in Natural Resources


Ecosystem


Any partially self
-
contained
environmental and living thing


Example: A lake, a large valley, or a
forest





Concepts in Natural Resources


Biome


A major land area characterized by
dominant plant life forms


Established by altitude and rainfall

Concepts in Natural Resources

Biomes (continued)

Concepts in Natural Resources


Preservation


An attempt to
prevent the use of a
natural resource


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


Conservation


An attempt to use a
natural resource in
a way to minimize
water


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

Concepts in Natural Resources


Carrying Capacity


The ability of an ecosystem to provide
food and shelter for a given population.

Concepts in Natural Resources


Food Web


A group of plants and/ or animals


related to each other by the fact that one
feeds or depends for food on the next


Concepts in Natural Resources

Food Web (continued)


Pyramidal in shape


Many producers


Fewer Consumers


Fewer still predators

Concepts of Natural Resources

Food Web (continued)

Concepts of Natural Resources

Producers


Also known
as autotrophs


Make their
own food


Consumers


Also known
as hetertrophs


Organisms
that feed on
other species


Concepts of Natural Resources


Food Chains (Continued)


Carnivores


First
-
order Carnivores


Carnivores that feed on
herbivores


Second
-
order Carnivores


Carnivores that feed on first order
carnivores


Concepts in Natural Resources


Food Chains (continued)


Omnivores


“All eaters”


These critters are both herbivores and
carnivores

Concepts of Natural Resources


Food Chains (continued)


Predators


Carnivores that feed on live animals


Examples: Owls

Concepts in Natural Resources


Food Chains (continued)


Prey


Animals that are eaten by predators


Examples: Mice

Concepts in Natural Resources


Food Chains (continued)


Scavengers


Critters that feed on dead organisms


Both plants and animals


Examples: snails, crayfish, crow

Concepts in Natural Resources


Food Chains (continued)


Saprophytes


Fungi that feed on dead organisms


Examples: Fungi, bacteria

Concepts in Natural Resources


Food Chains (continued)


Decomposer


Break down and feed on non
-
living
organic matter


Examples: Yeasts, molds