Hi,
Known to be good pollinators after Apoidae, the diversity of Hoverflies is linked to plant diversity. In order to understand this relationship, I will establish transects in different types of environments.In each environment, I will opt for several transects. Each transect has 30m ( Taken from a bibliographic reference).
Why 30 meters? On what depends the length of the sampling transect ?
Thank you.
Interesting question which depends on the first question of what is a site? In the UK we can answer this by saying that this is determined by an area subject to a uniform management. In this way a site can be any size! In practice large sites can be divided into smaller sub sites. More important is that it generally takes 20 sub samples to record a representative sample of the biodiversity. Check my papers on RG for further details (the one on setting baselines is probably the most useful). Any questions please do not hesitate to contact me. Good luck
Alam
The transect line should span the area of interest rather than being a fixed length. Also give consideration to width. And decide if you want continuous sampling, or sampling at intervals along the line :-)
Thanks for your quick answer.
Sampling will be done in monocultures (plantations of prickly pear or Olive grove) as well as along a hedge along the roadside.
If I have fixed the length of the transect, it is so that it is homogeneous in all the sites whatever the surface of the studied area. Is that wrong?
On the size of your research object and efficacy. On the latter we usually test the efficacy/accuracy, but this is mostly not reported in articles as journals/reviewers seem not to require such 'details'.
Article Invasion of an alien shrub across four land management regim...
The answer of Alan Feest seems very reasonable and acceptable for me and I also agree with it.
Best wishes
SM Najim
Thanks Dr Feest,
I will consult your papers and will contact you if necessary
Length of sampling transect depends on the gradient you are sampling. For instance, a research in a forest ecosystem, “edge effect of a forest may be seen upto a distance of 100m long
I have attached the correct paper for the sampling on my earlier answer.
I would like to express my sincere thanks to all the researchers who answered my question.
Thank you Dr Hein Van-Gill for the paper.
Long transects and avoidance of edge effects as illustration (attached) of the points made by Agevi
Article Sharing natural resources: Mountain gorillas and people in t...
- Badges
- Science topic
- Similar topics
- Biological Science
- Biota
- Eukaryota
- Viridiplantae
- Streptophyta
- Plants