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Evaluation of Line Transect Sampling Based on Remotely Sensed Data from Underwater Video
Author(s) -
Bergstedt Roger A.,
Anderson David R.
Publication year - 1990
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1990)119<0086:eoltsb>2.3.co;2
Subject(s) - transect , underwater , estimator , hectare , sampling (signal processing) , line (geometry) , environmental science , distance sampling , statistics , remote sensing , geology , mathematics , geography , computer science , oceanography , telecommunications , geometry , archaeology , detector , agriculture
We used underwater video in conjunction with the line transect method and a Fourier series estimator to make 13 independent estimates of the density of known populations of bricks lying on the bottom in shallows of Lake Huron. The pooled estimate of density (95.5 bricks per hectare) was close to the true density (89.8 per hectare), and there was no evidence of bias. Confidence intervals for the individual estimates included the true density 85% of the time instead of the nominal 95%. Our results suggest that reliable estimates of the density of objects on a lake bed can be obtained by the use of remote sensing and line transect sampling theory.