Bias in underwater visual census has always been elusive. In fact, the choice of sampling method and the behavioural traits of fish are two of the most important factors affecting bias, but they are still treated separately, which leads to arbitrarily chosen sampling methods. FishCensus, a two-dimensional agent-based model with realistic fish movement, was used to simulate problematic behavioural traits in SCUBA diving visual census methods and understand how sampling methodology affects the precision and bias of counts. Using a fixed true density of 0.3 fish/m2 and a fixed visibility of 6 m, 10 counts were simulated for several combinations of parameters for transects (length, width, speed) and point counts (radius, rotation speed, time), ...
Accurate estimates of fish species occurrence are important to any species’ assessments and ha...
Underwater visual census (UVC) is the most common approach for estimating diversity, abundance and s...
Diver-based Underwater Visual Censuses (UVCs), particularly transect-based surveys, are key tools in...
Bias in underwater visual census has always been elusive. In fact, the choice of sampling method and...
Underwater visual census (UVC) methods are used worldwide to monitor shallow marine and freshwater h...
Non-random movement has been observed in a number of reef fish species but its effect on visual coun...
BACKGROUND: Increasingly, underwater visual censuses (UVC) are used to assess fish populations. Seve...
Abstract. Underwater visual census (UVC) is a widely used technique for estimating species richness,...
1. Underwater visual census (UVC) using SCUBA is a commonly used method for assessing reef fish comm...
The need to address biodiversity information requirements has led to ‘methods research’ growing sign...
) have been reported for some remote islands suggesting the occurrence of inverted trophic biomass p...
Background Underwater visual surveys (UVSs) for monitoring fish communities are preferred over fishi...
Visual standardised methods for census of reef fishes have long been used in fisheries management an...
Estimates of reef fish densities made by divers visually censusing 5 m wide strip transects were co...
Underwater Visual Samples are used widely in marine ecology to determine an accurate population and ...
Accurate estimates of fish species occurrence are important to any species’ assessments and ha...
Underwater visual census (UVC) is the most common approach for estimating diversity, abundance and s...
Diver-based Underwater Visual Censuses (UVCs), particularly transect-based surveys, are key tools in...
Bias in underwater visual census has always been elusive. In fact, the choice of sampling method and...
Underwater visual census (UVC) methods are used worldwide to monitor shallow marine and freshwater h...
Non-random movement has been observed in a number of reef fish species but its effect on visual coun...
BACKGROUND: Increasingly, underwater visual censuses (UVC) are used to assess fish populations. Seve...
Abstract. Underwater visual census (UVC) is a widely used technique for estimating species richness,...
1. Underwater visual census (UVC) using SCUBA is a commonly used method for assessing reef fish comm...
The need to address biodiversity information requirements has led to ‘methods research’ growing sign...
) have been reported for some remote islands suggesting the occurrence of inverted trophic biomass p...
Background Underwater visual surveys (UVSs) for monitoring fish communities are preferred over fishi...
Visual standardised methods for census of reef fishes have long been used in fisheries management an...
Estimates of reef fish densities made by divers visually censusing 5 m wide strip transects were co...
Underwater Visual Samples are used widely in marine ecology to determine an accurate population and ...
Accurate estimates of fish species occurrence are important to any species’ assessments and ha...
Underwater visual census (UVC) is the most common approach for estimating diversity, abundance and s...
Diver-based Underwater Visual Censuses (UVCs), particularly transect-based surveys, are key tools in...