Results 271 to 280 of about 23,818 (286)
Some of the next articles are maybe not open access.
Using Frequency Distributions of Catch per Unit Effort to Measure Fish-Stock Abundance
Transactions of the American Fisheries Society, 1983Abstract Mean catch per unit effort often is used as an index of fish abundance, N. This index is often biased. Frequency distributions of catch per unit effort (C/f) and independent estimates of N from a headboat sport fishery for yellowtail snappers Ocyurus chrysurus off Islamorada, Florida, indicated that mean C/f underestimated changes in N ...
Scott P. Bannerot, C. Bruce Austin
openaire +1 more source
Journal of Applied Ichthyology, 2015
Summary Different types of fishing gear are known to vary in catch per unit effort (CPUE), but little is known regarding this in respect to the three-spined stickleback Gasterosteus aculeatus (Linnaeus 1758). The influence of the three-spined stickleback CPUE by trap model, baiting and visual attractors was investigated.
openaire +1 more source
Summary Different types of fishing gear are known to vary in catch per unit effort (CPUE), but little is known regarding this in respect to the three-spined stickleback Gasterosteus aculeatus (Linnaeus 1758). The influence of the three-spined stickleback CPUE by trap model, baiting and visual attractors was investigated.
openaire +1 more source
Comparison of Two Methods of Combining Catch-Per-Unit-Effort Data from Geographic Regions
Canadian Journal of Fisheries and Aquatic Sciences, 1982We examined two methods of combining catch-and-effort data from small geographic regions into large regulatory areas to estimate catch-per-unit-effort (CPUE): (1) weighting regional CPUE by bottom area occupied by the population; (2) weighting by fishing effort.
Terrance J. Quinn II +2 more
openaire +1 more source
Evaluation of Electrofishing Catch per Unit Effort for Indexing Fish Abundance in Florida Lakes
Transactions of the American Fisheries Society, 2012AbstractElectrofishing CPUE data are commonly used to index temporal trends in abundance in fish monitoring programs, but the reliability of this index requires the assumption that the fraction of fish stock caught per unit effort (catchability, q) is relatively precise and constant through time. We evaluated how fish species, season, and lake affected
Matt A. Hangsleben +2 more
openaire +1 more source
Hunter Reporting of Catch per Unit Effort as a Monitoring Tool in a Bushmeat‐Harvesting System
Conservation Biology, 2010Abstract: Growing threats to biodiversity in the tropics mean there is an increasing need for effective monitoring that balances scientific rigor with practical feasibility. Alternatives to professional techniques are emerging that are based on the involvement of local people.
Janna, Rist +3 more
openaire +2 more sources
Catch-Per-Unit-Effort: A Statistical Model for Pacific Halibut (Hippoglossus stenolepis)
Canadian Journal of Fisheries and Aquatic Sciences, 1985The empirical distributions of catch-per-unit-effort (CPUE) of Pacific halibut (Hippoglossus stenolepis) were positively skewed and could be modeled by a general family of distributions involving power transformations. The root normal distribution, a special case from the family, was found to be a convenient model for the data. Measures of the central
openaire +1 more source
Marine and Freshwater Research, 2019
Quantitative models that predict stock abundance can inform stock assessments and adaptive management that allows for less stringent controls when abundance is high and environmental conditions are suitable, or tightening controls when abundance is low and environmental conditions are least suitable.
Karina L. Ryan, Denny Meyer
openaire +2 more sources
Quantitative models that predict stock abundance can inform stock assessments and adaptive management that allows for less stringent controls when abundance is high and environmental conditions are suitable, or tightening controls when abundance is low and environmental conditions are least suitable.
Karina L. Ryan, Denny Meyer
openaire +2 more sources
Marine and Freshwater Research, 2009
Spatial scale is an important factor that needs to be considered in data collection and analysis in ecological studies. Studies focusing on the quantitative evaluation of impacts of spatial scales are, however, limited in fisheries. Using the Chinese squid-jigging fishery in the north-western Pacific Ocean as an example, we evaluated impacts of spatial
Siquan Tian +4 more
openaire +1 more source
Spatial scale is an important factor that needs to be considered in data collection and analysis in ecological studies. Studies focusing on the quantitative evaluation of impacts of spatial scales are, however, limited in fisheries. Using the Chinese squid-jigging fishery in the north-western Pacific Ocean as an example, we evaluated impacts of spatial
Siquan Tian +4 more
openaire +1 more source
Modelling catch per unit effort of the Black Volta near the Bui dam in Ghana
African Journal of Ecology, 2016AbstractThe chlorophyll a concentration and water level of the Black Volta near the Bui dam were studied in relation to fish production as measured by catch per unit effort (CPUE) between February 2011 and December 2012. The primary objective was to develop a simple linear regression model for predicting CPUE levels.
Elliot H. Alhassan +2 more
openaire +1 more source
Catch-Per-Unit-Effort Models: An Application to an Elk Population in Colorado
1992Catch-per-unit-effort (CPUE) models have been a traditional tool of fisheries management but have been relatively unexplored and unused for estimating abundance and survival rates of terrestrial game populations. CPUE models are appealing because they use harvest data traditionally collected by wildlife managers and do not require marking animals.
openaire +1 more source