transect

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transect

(trăn-sĕkt′)
tr.v. tran·sected, tran·secting, tran·sects
To divide by cutting transversely.
n.
A usually straight line along which measurements or observations are made at regular intervals, as for purposes of ecological study.

tran·sec′tion n.

transect

[transekt′]
Etymology: L, trans + secare, to cut
to sever or cut across, as in preparing a cross section of tissue. See also transsect, transsection.

transect

a line across a habitat or habitats along which organisms are sampled in order to study changes that may occur along that line. Transects are most frequently used in studying changes in vegetation (often a particular species) across a physically changing habitat such as blanket bog or sand dunes. A belt transect may be considered as a widening of a line transect or as a continuous line of QUADRATS, and all plants within the belt are recorded, as opposed to only those t ouching the line in the case of the line transect. Recording in a belt transect is much more time-consuming but gives more accurate results. Association transects are very long and usually only dominant species or ASSOCIATIONS are recorded.
References in periodicals archive ?
All but 1 individual were present in the transect that was located along the northern talus-dominated shoreline of the lake (Fig.
We monitored vegetation along each of the 10 transects to identify changes in plant species composition and live-canopy cover over the 33-year period of 1981-2014.
The transects were established following Peres (1999); cut with a machete, directed with a compass, and marked every 50 m with flagging and using a handheld GPS (Garmin GPSmap 62s).
Pygmy rockfish accounted for 70% of the 5-cm-TL fish and 51% of 10-cm-TL fish from the ROV transects but for only 26% of 5-cm-TL fish and 40% of 10-cm-TL fish from the HOV transects.
The evidence here does however suggest that spatial autocorrelation in pine marten detections operates at a small scale and that data from earlier surveys can therefore be reanalysed using occupancy modelling techniques, provided locations of transects and detected scats were recorded and that scats were selected for genetic analysis independently.
Similar trends were also recorded in the mean transect count population in different vulture colonies during the study period.
Furthermore, the recorded transects can be used to quantify habitat characteristics on a fine and broadscale (Spencer et al.
Finally, D was normalized so that all distances were in the interval [0,1], thus providing a scale-free representation of each specimen in a common multivariate-morphometric space, allowing the direct comparison of the two transects in terms of morphological distance.
In each sampling plot, two line transects were marked on which roe deer snow tracks crossing the transect lines had been erased one day before the population census.
Standard errors were used to depict differences among mean values of vegetation structure within transects.
Lastly, the area sampled for fruits actually corresponds to only a small fraction within the home range of primate groups and some of group sightings recorded may have been of primate groups moving between foraging areas well beyond the study transects (Rovero and Struhsaker, 2007).