Category Archives: fisheries management

Should we account for imperfect detection when evaluating patterns in fish abundance?

Our recent paper sheds light on the issue of imperfect detection when evaluating patterns in fish abundance. We synthesize the information from numerous studies to develop a realistic expectation of when and how the detection probability should vary when sampling fish. Our … Continue reading

Posted in Ecological statistics, Ecology, Experimental design, fisheries management, population modeling, recreational fisheries, Uncategorized | Leave a comment

Effects of antecedent flow patterns on juvenile fish of the Murray River.

Our new paper shows a divergent response between native and non-native floodplain wetland fish of the Murray River to different temporal scales of wetland connectivity to the river.  This finding has implications for the management of native fish communities with … Continue reading

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Novel gear combinations for meeting the assumptions of occupancy models in marine systems.

Our new paper demonstrates how applying novel sampling gear combinations can provide statistical replication that is necessary for fitting a class of hierarchical models of occurrence and abundance that use detection/non-detection data. We apply this method to marine reef fish … Continue reading

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Estimating the uncertainty in exploitation rates using parametric bootstrapping

Recently I taught a class on estimating fisheries exploitation rates with tagging studies.  A common study design to estimate exploitation rates is to release tagged fish into the system and allow anglers to return the tags when they harvest a … Continue reading

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Using movement information to approximate population closure for mark-recapture sampling designs:

Abundance of animals in an area (i.e. density) is one of the most basic population parameters desired in applied ecology. Many methods have been developed to estimate abundance within an area such as mark-recapture; however, it is often unclear the … Continue reading

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Under what conditions do we expect spawning-season closures to be effective at protecting largemouth and smallmouth bass stocks?

Black basses such as largemouth bass and smallmouth bass support popular recreational fisheries across North America.  In addition to length limits and bag limits, bass stocks are often managed with seasonal closures during spawning, particularly in their northern regions.  Spawning … Continue reading

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