Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico

Biologists commonly use standard sampling protocols to ensure that data are comparable spatiotemporally. Data also need to be precise to allow for statistically meaningful comparisons. However, the effort needed to precisely sample desert fishes is unclear. We used a resampling approach to evaluate...

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Main Authors: Zach Klein, Matt Zeigler
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Hydrobiology
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Online Access:https://www.mdpi.com/2673-9917/4/1/3
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author Zach Klein
Matt Zeigler
author_facet Zach Klein
Matt Zeigler
author_sort Zach Klein
collection DOAJ
description Biologists commonly use standard sampling protocols to ensure that data are comparable spatiotemporally. Data also need to be precise to allow for statistically meaningful comparisons. However, the effort needed to precisely sample desert fishes is unclear. We used a resampling approach to evaluate the effort requirements needed to precisely sample fishes among six wadeable rivers in the Gila River basin, New Mexico. We evaluated the number of samples that are necessary to obtain relative density estimates that had 25% relative standard error 80% of the time. We also estimated the effort needed to precisely characterize species richness. Our results indicate that precisely sampling fish in the Gila River basin is difficult. Sonora Sucker <i>Catostomus insignis</i>, Desert Sucker <i>C. clarkii</i>, Longfin Dace <i>Agosia chrysogaster</i>, and Speckled Dace <i>Rhinicthyes osculus</i> were generally the only species that could be precisely sampled. Characterizing the native species assemblage in the Gila River basin required between two and seven reaches, whereas the entire species assemblage could only be characterized in 50% of the study systems. The challenge of precisely sampling fish in the Gila River basin suggests that alternative sampling methods may be required to characterize changes in density or species distribution in desert Southwest systems.
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spelling doaj-art-e5caf991bb8f497bab6a54840c477c0c2025-08-20T02:11:26ZengMDPI AGHydrobiology2673-99172025-01-0141310.3390/hydrobiology4010003Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New MexicoZach Klein0Matt Zeigler1Department of Fish, Wildlife and Conservation Ecology, New Mexico State University, 2980 South Espina, Las Cruces, NM 88033, USANew Mexico Department of Game and Fish, Fisheries Management Division, 1 Wildlife Way, Santa Fe, NM 87505, USABiologists commonly use standard sampling protocols to ensure that data are comparable spatiotemporally. Data also need to be precise to allow for statistically meaningful comparisons. However, the effort needed to precisely sample desert fishes is unclear. We used a resampling approach to evaluate the effort requirements needed to precisely sample fishes among six wadeable rivers in the Gila River basin, New Mexico. We evaluated the number of samples that are necessary to obtain relative density estimates that had 25% relative standard error 80% of the time. We also estimated the effort needed to precisely characterize species richness. Our results indicate that precisely sampling fish in the Gila River basin is difficult. Sonora Sucker <i>Catostomus insignis</i>, Desert Sucker <i>C. clarkii</i>, Longfin Dace <i>Agosia chrysogaster</i>, and Speckled Dace <i>Rhinicthyes osculus</i> were generally the only species that could be precisely sampled. Characterizing the native species assemblage in the Gila River basin required between two and seven reaches, whereas the entire species assemblage could only be characterized in 50% of the study systems. The challenge of precisely sampling fish in the Gila River basin suggests that alternative sampling methods may be required to characterize changes in density or species distribution in desert Southwest systems.https://www.mdpi.com/2673-9917/4/1/3sampling precisiondesert fishsouthwest USA
spellingShingle Zach Klein
Matt Zeigler
Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico
Hydrobiology
sampling precision
desert fish
southwest USA
title Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico
title_full Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico
title_fullStr Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico
title_full_unstemmed Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico
title_short Evaluation of Sampling Precision for Native and Nonnative Fish in the Gila River Basin, New Mexico
title_sort evaluation of sampling precision for native and nonnative fish in the gila river basin new mexico
topic sampling precision
desert fish
southwest USA
url https://www.mdpi.com/2673-9917/4/1/3
work_keys_str_mv AT zachklein evaluationofsamplingprecisionfornativeandnonnativefishinthegilariverbasinnewmexico
AT mattzeigler evaluationofsamplingprecisionfornativeandnonnativefishinthegilariverbasinnewmexico