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It requires an observer to move along a fixed path and to count occurrences along the path and, at the same time (in some procedures), obtain the distance of the object from the path. This results in an estimate of the area covered and an estimate of the way in which detectability increases from
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The estimation of the abundance of populations (such as terrestrial mammal species) can be achieved using a number of different types of transect methods, such as strip transects,
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probability 0 (far from the path) towards 1 (near the path). Using the raw count and this probability function, one can arrive at an estimate of the actual density of objects.
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Transects being used to measure the changes around the boundary of a grassland fire near
Backhouse Tarn, Tasmania.
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is a path along which one counts and records occurrences of the objects of study (e.g. plants).
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Path along which the observer counts and records occurrences of the subjects of the survey
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Line Lex Hiby, M. B. Krishna 2001. "Transect
Sampling from a Curving Path".
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Buckland, S. T.; Anderson, D. R.; Burnham, K. P.; Laake, J. L. 1993.
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Distance
Sampling: Estimating Abundance of Biological Populations
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30:For the urban planning approach, see
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41:A transect running across a stream.
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215:Environmental Sampling Equipment
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180:The dictionary definition of
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80:and curved line transects.
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210:Environmental statistics
200:Scientific observation
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205:Ecological techniques
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159:2007-09-30 at the
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102:Distance sampling
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32:Transect (urban)
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161:Wayback Machine
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108:MegaTransect
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194:Categories
151:Biometrics
115:References
78:gradsects
18:Transects
183:transect
157:Archived
84:See also
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90:Census
135:ISBN
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