quadrat


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Related to quadrat: quadrat sampling

quadrat

(kwŏd′rət, -răt′)
n.
Any of a group of small, usually rectangular plots of land used for sampling the occurrence of species or of archaeological artifacts.

quadrat

an area of ground surface, often 1 m2, used as a sampling unit in population studies.
References in periodicals archive ?
In these studies, the biomass for different fishing zones was estimated using the samples obtained by scraping the rocky surface within quadrats.
A comparison of the effectiveness of timed searches vs quadrat sampling in mussel surveys.
tumidifructa) were present in 2015 only, in quadrats which were inundated during the environmental watering event, suggesting they may have germinated in response to increased soil moisture resulting from inundation.
The quadrat and the small plankton net influenced the presence of zeros in the data to a larger extent than that of the aquarium net.
There were significant differences between the mean light levels and quadrat location (Fig.
Considering the quadrat sampling method (QuS), we distributed the quadrats arbitrarily, always respecting the limits defined for each base, independently of the substrates.
As for the quadrat method, linear extents of suitable, mostly dead substrate (including that inhabited by the sponge), live surface cover, sand, and mud were noted for the intercepts (Fig.
Slope (S): Slope is measured in five 1 m A- 1m quadrats slope by declinator and the average value is used.
The representation of the number of alien taxa per quadrat using colour coding (Mitchell, 1999) and subsequent comparison of all quadrats under study were done with GIS software ArcView 9.