A quadrat can be used by researchers to methodically count organisms within a smaller, representative area in order to extrapolate to a larger habitat when comprehensive sampling is impossible or not …

Using the magnifying glass, count every insect inside the quadrat. Avery Hurt, National Geographic, 26 June 2020

Feb 26, 2025 · A quadrat is a square or rectangular sampling frame used in ecological research to study and measure the distribution of organisms in a particular area. It helps researchers collect data on...

quadrat in American English (ˈkwɑdrət ) noun Origin: ME, var. of quadrate 1. quad 2

A quadrat is a frame, traditionally square, used in ecology, geography and biology to isolate a standard unit of area for study of the distribution of an item over a large area.

There are four meanings listed in OED's entry for the noun quadrat, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Quadrat definition: A piece of type metal lower than the raised typeface, used for filling spaces and blank lines.

Once the quadrat is assembled, cut two ~10 foot long pieces of fishing line per quadrat. Leaving a few inches of fishing line free, wind the line a few times around the PVC pipe near one of the holes …

quadrat a plot of land, square or rectangular, marked off or set out for the study of plant or animal life.

The study defines populations as the number of individuals in a given species in a 10,000-square-kilometer unit of habitat, known as a quadrat. From New York Times