Offwell Woodland & Wildlife Trust

Promoting the British Countryside

Home

About us Conservation Education Wildlife Habitats Maps Search Resources Sponsors


The Wet Woodland Plant Survey

Survey Methods

clrng2.JPG (1048044 bytes)

 

Two methods of surveying were employed across the Wet Woodland Area.  One looked at the ground level plants and employed a random sampling method.  The other survey method covered all trees greater than 2m in height, recording the percentage of each species in an area, along with other data such as the maximum height attained by each species.

 

Initial inspection of the Wet Woodland revealed six distinct areas.

1) Wet Seepage
2) Stony Area
3) Clearance
4) Bluebell Area
5) The Mound
6) Non-native cherry Area

 

Ground Level Plant Survey Method

For our survey purposes, ground level plants were limited to all those up to and including 2 metres in height.

Each of the six areas was treated separately for the purposes of the survey.  To avoid a huge work load in data collection from the entire Wet Woodland area, a method of sampling was employed called Stratified Random Quadrat Sampling. 

 

Image01.jpg (371996 bytes)
Random Sampling.  A square wooden frame with sides of 1m length known as a quadrat is placed on the ground at a  position determined by random numbers.  Plant species within the square are recorded, along with the percentage cover within the square and the maximum height to which the species is growing there.

 

Continued

Back to Contents Page

 

 

Copyright Offwell Woodland & Wildlife Trust 1998/9 & 2000/1/2/3/4 http://www.offwell.info

All the information including images, charts, movies and sounds is provided copyright free, only for educational use by: schools, colleges and universities unless you are making a charge. If you wish to use information or any part of this site for commercial purposes or for any purpose where a charge is made then you must get permission, so make sure you contact us first. Remember, if you are not a school, college or university you must obtain permission to use any part of this website. Note that company logos are reproduced with permission and remain copyright of their respective owners.