KEGS Biology Blog

Monday 10th September 2012 Section 2
September 10, 2012, 1:29 pm
Filed under: Uncategorized

What is Biodiversity? Definition of a species. Sampling techniques.


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Coursework lesson on Biodiversity and definitions of key terms relating to it

Biodiversity is: the number of living things in an area and in how many different areas they can be found in
However Biodiversity is not evenly spread throughout the globe, for example in the tropics much more biodiversity can be found compared to the Polar habitats

Different species of animal, plants and microorganisms make up the biodiversity of an area and therefore the definition of a species is needed
A species is: A group of organisms able to interbreed and give rise to fertile offspring
For example a horse and a Zebra may be able to breed and make a Zeedonk but the Zeedonk is unable to reproduce meaning it dies out, confirming horses and zebras are separate species, even if the differences are obvious, the two may have been just different morphs of the same animal.

The older definition of species is still useful for observations and is a group of organisms that share many physical features; these could be similar anatomy, behavior, nutrition or physiology
Different species have genetic diversity; however each member of the species will look different from simple height difference to the obvious differences like, skin colour. Therefore it can be hard to classify species like this

A habitat is where an organism lives and could range from a simple food chain living there or a complex food web with a large biodiversity.

Our coursework will involve studying the biodiversity of a meadow
A Quadrat will be used for this by choosing a random area to place the Quadrat and counting the different plant life found there, then the data will be extrapolated to the whole meadow, this doesn’t harm the meadow and makes it easier and less time consuming to get an estimate of the plant life in the meadow.

By Jaimie Clifford

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Comment by deelanvadher

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