Event Title

Session A4: Standardization of Study Design and Data Parameters for Analysis of Fish Passage Performance

Presenter Information

Christopher Bunt, Biotactic Inc.

Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

23-6-2015 10:50 AM

End Date

23-6-2015 11:05 AM

Description

Abstract:

A meta-analysis was recently designed and executed to compare attraction efficiency and passage efficiency of pool-and-weir, Denil, vertical-slot and nature-like fishways from evaluation studies conducted worldwide since the late 1980s. Studies were considered appropriate for inclusion in the analysis if they used similar methodology, to minimize confounding factors, and to permit valid statistical comparisons of the data. Unfortunately, it was necessary to exclude potentially valuable data from several dozen performance evaluation studies due to inconsistencies in data collection methods, and consequential deviation from the strict rubric that was developed for this work. From an initial pool of over 150 fishway evaluation studies, only 19 studies were comparable, with data from 26 species of anadromous and potamodromous fishes from 6 countries. Each species was separated by year and taxonomic family into a matrix with 101 records that followed the rubric, and produced data that could be standardized and compared with PCA and logistic regression modelling. Details of the rubric and rationale for its development will be described, in addition to major findings from the meta-analysis including the need for more standardized research. Until this is done, existing data are insufficient to support confident fishway design recommendations.

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Jun 23rd, 10:50 AM Jun 23rd, 11:05 AM

Session A4: Standardization of Study Design and Data Parameters for Analysis of Fish Passage Performance

Groningen, The Netherlands

Abstract:

A meta-analysis was recently designed and executed to compare attraction efficiency and passage efficiency of pool-and-weir, Denil, vertical-slot and nature-like fishways from evaluation studies conducted worldwide since the late 1980s. Studies were considered appropriate for inclusion in the analysis if they used similar methodology, to minimize confounding factors, and to permit valid statistical comparisons of the data. Unfortunately, it was necessary to exclude potentially valuable data from several dozen performance evaluation studies due to inconsistencies in data collection methods, and consequential deviation from the strict rubric that was developed for this work. From an initial pool of over 150 fishway evaluation studies, only 19 studies were comparable, with data from 26 species of anadromous and potamodromous fishes from 6 countries. Each species was separated by year and taxonomic family into a matrix with 101 records that followed the rubric, and produced data that could be standardized and compared with PCA and logistic regression modelling. Details of the rubric and rationale for its development will be described, in addition to major findings from the meta-analysis including the need for more standardized research. Until this is done, existing data are insufficient to support confident fishway design recommendations.

https://scholarworks.umass.edu/fishpassage_conference/2015/June23/98