KEGS Biology Blog


Monday 22nd October Section 2
October 21, 2012, 6:39 pm
Filed under: Uncategorized

Conservation in situ and ex situ

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2 Comments so far
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IN SITU conservation is minimising impact on the natural environment and protecting the natural environment. It includes leaving plants and animals in their natural habitats and enforcing laws to protect them.

Key points regarding in sut conservation include:
-Comprehensiveness (how many species are represented?)
-Adequacy (is it large enough for long term survival?)
-Representative (is there a full range of biodiversity?)

Advantages of in situ conservation include:
-Plants and animals are conserved in their natural habitat.
Protects biodiverswity.
-Scientific research.
May be possible to restore the plants back into the wild.

National parks (10 in the UK). National Nature Reserves (215) and Sites of Special Scientific Interest (SSSI- 6000+) are all examples of in situ conservation areas; Dawes Hall is a SSSI and conserves Black Poplar clone bakns and Yellow Rattle.

EX SITU means taking the animal or plant outside of its natural environment such as in botanical gardens or by captive breeding of animals.

Zoos specialise in breeding endangered animals as they keep the animals away from predators, provide medical care and feed the animals regularly and appropriately.

The problems with ex situ conservation are:
-Very expensive.
-Genetic diversity reduced.
-Less adaption.
-Reintroduction possible?

Comment by danialnaqvi

There’s ex-sitru conservation of plants using Botanical Gardens.
Advantages include – Seeds produced in large numbers
– They can be stored / germinated in protected surroundings
-Plants can be bred asexually ( however if this is the case genetic diversity is reduced and mutations can occur affecting the plants and maybe even other plants)
-It’s generally quick to reproduce Large numbers
However, disease, less adaptation to natural enviroment are problems that may arise.
The sample may not be representative
Seeds collected from one area will be genetically different from those from anther area so they may not survive in a new area.
Not all seeds stored for a long time will remain viable
Then there’s always the question of whether they can be reintroduced into their natural enviroment ?

Comment by halima101




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