what are limitations of random sampling to measure plant species richness

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ElectronDonor
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kka25
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(Original post by ElectronDonor)
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Random sampling is just that, random; you wouldn't necessarily get a representation of the actual population. If I'm not mistaken (pleace check), you'd use this to have a quick overview of your targeted study.
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(Original post by kka25)
Random sampling is just that, random; you wouldn't necessarily get a representation of the actual population. If I'm not mistaken (pleace check), you'd use this to have a quick overview of your targeted study.
Are there anymore need at least three
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liamb80
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species richness is the number of different species in a habitat.
Random sampling only measures a small part of the area, for example 10 random meter squares areas in a field.
Random sampling may miss out some of the species as it does not measure the whole area meaning that the results will not be accurate and reliable.
To increase the accuracy and reliability lots of samples should be taken.
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ElectronDonor
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(Original post by liamb80)
species richness is the number of different species in a habitat.
Random sampling only measures a small part of the area, for example 10 random meter squares areas in a field.
Random sampling may miss out some of the species as it does not measure the whole area meaning that the results will not be accurate and reliable.
To increase the accuracy and reliability lots of samples should be taken.
How would it affect the data
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Tarte Tatin
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You may not get an accurate representation of the whole habitat.
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liamb80
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(Original post by ElectronDonor)
How would it affect the data
if some of the species are missed out then the value of species richness would be too low.
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liamb80
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if this a a 3 mark question then
there will probably be 1 mark for:saying what species richness is
1 mark for:showing you know what random sampling is.
1 mark for :stating problems caused by random sampling eg, data is not reliable, may not give a accurate representation of the whole area.
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ElectronDonor
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(Original post by liamb80)
if this a a 3 mark question then
there will probably be 1 mark for:saying what species richness is
1 mark for:showing you know what random sampling is.
1 mark for :stating problems caused by random sampling eg, data is not reliable, may not give a accurate representation of the whole area.
In my evaluation i need to know limitations of random sampling there effect and improvement i think it will be worth 6 marks
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liamb80
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improvements: sample a larger area, sampling the whole area would be even better, however this is often not viable as the time taken would be too great. If this is biology coursework you could take about how sampling the entire area is not viable, and how scientist use random sampling as it is much quicker to give a representation of species richness in an area.
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(Original post by liamb80)
improvements: sample a larger area, sampling the whole area would be even better, however this is often not viable as the time taken would be too great. If this is biology coursework you could take about how sampling the entire area is not viable, and how scientist use random sampling as it is much quicker to give a representation of species richness in an area.
Would that be a limitation though it takes too much time
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liamb80
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(Original post by ElectronDonor)
Would that be a limitation though it takes too much time
That would a limitation for the experiment (too time consuming to measure the entire area.​) but not a limitation of random sampling as random sampling saves time!
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(Original post by liamb80)
That would a limitation for the experiment (too time consuming to measure the entire area.​) but not a limitation of random sampling as random sampling saves time!
Ive only got one limitation which is sample may not be representative of population, and is there anymore
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#14
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Anymore guys please
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