Shared Flashcard Set

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WFC 10- Chapter 7
N/A
16
Other
Undergraduate 1
11/05/2009

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Cards

Term
Biodiversity
Definition

Wealth of life on earth (all plants, animals and microorganisms), the genes they contain and the intricate ecosystems they help build

Term
Species Diversity
Definition

Conceders the wealth of species on the plant or at some more local or geographical level

Term
Genetic diversity
Definition
Natural variation
Term
Ecosystem diversity
Definition

Areas with suites of interacting populations of plants, animals and microbes “all living organism in a place combined with the non-living characteristics”

Term
Alpha diversity
Definition

The number of species counted in a local community

Term
Gama Biodiversity
Definition

The number of species counted across multiple communities

Term
Human Population Growth
Definition

Each individual needs to consume other organisms to survive and all of these come from the world’s biodiversity.  Humans are the ultimate predator. It is unknown when we will hit carrying capacity and if we will have eliminated majority of the worlds biodiversity before we do so

Term
Habitat Destruction
Definition

Human population keeps grown and need space: clear cutting of rainforest, draining of wetlands, coral bleaching.  Biodiversity is lost if habitat is lost, species can’t survive without their habitat.

Term
Alien Species
Definition

Second leading cause to loss of biodiversity, people transport non-native species around the world and majority of the time they don’t know they are doing it

Term
Climate change
Definition

Result of large scale pollution of the atmosphere with carbon dioxide and other compounds.  Habitats are changing due to climate change such as precipitation patterns, ice caps melting, sea level rising, ocean currents changing

Term
Pollution
Definition

Excrement’s of human life effecting the environment, toxic chemicals being put into the natural environment.  Many acts have been passed to attempt to protect species and habitats from pollution, but much is still at risk.

Term

Causes of Biodiversity decline (5)

Definition

Human population growth

Habitat destruction

Alien species

Climate change

Pollution

Term
Extirpation
Definition
Local extinction, a species may exist in other regions
Term
Epiphyte
Definition

A plant species that lives on another plant, but is not a parasite and does not derive any nutrients from the host plant

Term
Taxonomy
Definition
Classification based on similarities
Term
The sixth mass extinction
Definition
We are currently in the 6th mass extinction on earth: about 80,000 square miles of rainforest are cut down each year, about 100,000 species are lost each year due to deforestation and it is estimated 1/3 of all mammals will be extinct within 30 years
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