Definition of quadrat in English:

quadrat

noun ˈkwɒdrət

Ecology

1Each of a number of small areas of habitat, typically of one square metre, selected at random to act as samples for assessing the local distribution of plants or animals.
Example sentencesExamples
- Forest quadrats showed a less pronounced seasonal decline in light availability.
- For every nightly census, a minimum of three and a maximum of 21 quadrats were sampled.
- Nonuse quadrats were the 413 vegetation quadrats that fell outside of territories.
- Territory quadrats were the vegetation quadrats sampled at the center of each of 88 territories.
- A total of 199 quadrats were sampled in closed canopy areas.
1. 1.1 A portable frame, typically with an internal grid, used to mark out a quadrat.
  Example sentencesExamples
  A plastic grid with 25 small quadrats (each corresponding to 4% of the total cover) was used.
  Canopy cover was dominated by Quercus macrocarpa with a relative frequency of 63% of quadrats with a wooded canopy.
  Percent cover of each species in the herb stratum was estimated visually using a portable 1 X 1 m quadrat with 1 dm graduations.

Origin

Early 20th century: variant of quadrate.

Definition of quadrat in US English:

quadrat

noun

Ecology

1Each of a number of small areas of habitat, typically of one square meter, selected at random to act as samples for assessing the local distribution of plants or animals.
Example sentencesExamples
- Territory quadrats were the vegetation quadrats sampled at the center of each of 88 territories.
- For every nightly census, a minimum of three and a maximum of 21 quadrats were sampled.
- Nonuse quadrats were the 413 vegetation quadrats that fell outside of territories.
- Forest quadrats showed a less pronounced seasonal decline in light availability.
- A total of 199 quadrats were sampled in closed canopy areas.
1. 1.1 A portable frame, typically with an internal grid, used to mark out a quadrat.
  Example sentencesExamples
  Canopy cover was dominated by Quercus macrocarpa with a relative frequency of 63% of quadrats with a wooded canopy.
  Percent cover of each species in the herb stratum was estimated visually using a portable 1 X 1 m quadrat with 1 dm graduations.
  A plastic grid with 25 small quadrats (each corresponding to 4% of the total cover) was used.

Origin

Early 20th century: variant of quadrate.

单词	quadrat
释义	Definition of quadrat in English: quadrat noun ˈkwɒdrət Ecology 1Each of a number of small areas of habitat, typically of one square metre, selected at random to act as samples for assessing the local distribution of plants or animals. Example sentencesExamples Forest quadrats showed a less pronounced seasonal decline in light availability. For every nightly census, a minimum of three and a maximum of 21 quadrats were sampled. Nonuse quadrats were the 413 vegetation quadrats that fell outside of territories. Territory quadrats were the vegetation quadrats sampled at the center of each of 88 territories. A total of 199 quadrats were sampled in closed canopy areas. 1.1 A portable frame, typically with an internal grid, used to mark out a quadrat. Example sentencesExamples A plastic grid with 25 small quadrats (each corresponding to 4% of the total cover) was used. Canopy cover was dominated by Quercus macrocarpa with a relative frequency of 63% of quadrats with a wooded canopy. Percent cover of each species in the herb stratum was estimated visually using a portable 1 X 1 m quadrat with 1 dm graduations. Origin Early 20th century: variant of quadrate. Definition of quadrat in US English: quadrat noun Ecology 1Each of a number of small areas of habitat, typically of one square meter, selected at random to act as samples for assessing the local distribution of plants or animals. Example sentencesExamples Territory quadrats were the vegetation quadrats sampled at the center of each of 88 territories. For every nightly census, a minimum of three and a maximum of 21 quadrats were sampled. Nonuse quadrats were the 413 vegetation quadrats that fell outside of territories. Forest quadrats showed a less pronounced seasonal decline in light availability. A total of 199 quadrats were sampled in closed canopy areas. 1.1 A portable frame, typically with an internal grid, used to mark out a quadrat. Example sentencesExamples Canopy cover was dominated by Quercus macrocarpa with a relative frequency of 63% of quadrats with a wooded canopy. Percent cover of each species in the herb stratum was estimated visually using a portable 1 X 1 m quadrat with 1 dm graduations. A plastic grid with 25 small quadrats (each corresponding to 4% of the total cover) was used. Origin Early 20th century: variant of quadrate.
随便看	needle-bath needle bearing needle beer needle biopsy needle-board needle-book needlebush needlebushes needle case needle-cast needle coke needlecord needlecraft needlecrafts needled needle-dial needledick needle exchange needle exchanges needle eye needle-felt needle file needlefish needlefishes needle freak