Overestimating Fish Counts by Non-Instantaneous Visual Censuses: Consequences for Population and Community Descriptions

  title={Overestimating Fish Counts by Non-Instantaneous Visual Censuses: Consequences for Population and Community Descriptions},
  author={Christine A. Ward-Paige and Joanna Mills Flemming and Heike K Lotze},
  booktitle={PloS one},
BACKGROUND Increasingly, underwater visual censuses (UVC) are used to assess fish populations. Several studies have demonstrated the effectiveness of protected areas for increasing fish abundance or provided insight into the natural abundance and structure of reef fish communities in remote areas. Recently, high apex predator densities (>100,000 individuals x km(-2)) and biomasses (>4 tonnes x ha(-1)) have been reported for some remote islands suggesting the occurrence of inverted trophic… CONTINUE READING
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