quadrat

(kwŏd′rət, -răt′)

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.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

A total of 155 plant taxa was identified from the sampled quadrats for all study sites.

Exotic Species Occurrence in Remnant and Restored Eastern Prairie Ecosystems and their Relation to Native Species Richness, Evenness, and Functional Group Abundance

The database did not indicate the absence of canopy in quadrats where there was no canopy.

An exploration of the capacity of a database generated by post-fire vegetation monitoring to yield useful information about responses of individual species to fire

As for the roller chain method, this procedure was repeated for three transects per quadrat, which were averaged to provide a single mean value for each quadrat.

The pugometer: an evaluation of a new tool for assessing treading damage of pasture soils and comparisons with other methods

PVC quadrats were inexpensive and easy to construct.

SEAGRASS MONITORING IN SAN ANTONIO BAY, TEXAS WITH IMPLICATIONS FOR MANAGEMENT

Seven sample quadrats were taken randomly and decided the species area curves of the vegetation of Yemrehane Kirstos Church Forest.

Woody Species Diversity, Structure, and Regeneration Status of Yemrehane Kirstos Church Forest of Lasta Woreda, North Wollo Zone, Amhara Region, Ethiopia

Coverage was calculated as an average of the percentage coverage estimated in quadrats [adapted from Parada et al.

DISTRIBUTION PATTERNS OF THE GOOSENECK BARNACLE (POLLICIPES POLLICIPES [GMELIN, 1789]) IN THE CANTABRIA REGION (N SPAIN): EXPLORING DIFFERENT POPULATION ASSESSMENT METHODS

quadrats within the entire 200 m reach, extending across the entire width of the river for the length of the survey area.

Modern occurrence of and size data for Quadrula aurea (Mollusca: Unionidae) from the Medina River of Texas

Possible covariates that could be predictors of abundance were depth of the measurements, date, site effect (UPJP versus UPR), type of collection gear or net effect (quadrat, aquarium net, small plankton net, and large plankton net).

First assessment of the field ecology of larval Atlantic silverside (Menidia menidia)

Each transect line was then divided into three quadrats that measure 50m x 50m each.

Density of Tripneustesgratilla (Linnaeus, 1758) in the coastal area of Binuni, Bacolod, Lanao del Norte: potentials for sea urchin grow-out culture

There is only one study comparing sampling methods in caves (WEINSTEIN; SLANEY, 1995) and, in this case, the quadrat sampling method has not been assessed.

Effectiveness of quadrat sampling on terrestrial cave fauna survey a case study in a Neotropical cave/A eficacia do metodo de amostragem por quadrados em levantamentos da fauna terrestre cavernicola--um estudo de caso em uma caverna Neotropical

To evaluate the suitability of using quadrats, a continuous belt transect survey was conducted using a 0.5 X 0.5-m quadrat along the pre-established 100-m transects running at right angles to the shore (Fig.

Monitoring bioeroding sponges: using rubble, quadrat, or intercept surveys?

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