BIOL3701 Lecture Notes - Lecture 5: Food Chain, 5Star, Ecological Niche

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apricotseal718

26 Jun 2018

School

Flinders University

Department

BIOD Biodiversity and Conservation

Course

BIOL3701

Professor

Duncan Mackay

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Responses to Radicalism

Assisted Migration

Moving species so they ‘colonise’ in changed climates

Arguments put forward:

oIntroduces species at risk of extinction to new habitats, in anticipation

of more suitable conditions

oSave biodiversity

oLesser of 2 evils

oOvercoming natural barriers of dispersal that are accidents of chance

anyway

oNot viable

oExhausts most of the value of the species moved

PROS CONS

Bring back productivity

Save species

Shift the right species  gain

Destination impacts

Impacts on moved populations

Dominance change

Cross breeding

Gene pool issues

Rewilding

Bring back fierce, big animals that are locally extinct

Arguments put forward:

oA way to restore wilderness

oWorrying lack of consensus of what it is

oOriginal meaning misinterpreted

oReturning proxy species to fill a presumed ecological niche is a

problem

oWilderness paradox

oNo scientific grounds

PROS CONS

Restore ecological function

Strong evidence

Ecotourism

Increase gene pool

More natural selection

Conservation

Policy conflict

Undesirable population outcomes

Economic anxiety

De-Extinction

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BIOL3701 Lecture Notes - Lecture 5: Food Chain, 5Star, Ecological Niche

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