Influence of fishes on macroinvertebrate communities and insect emergence production in intermittent stream refuges

Bonjour, Sophia M.; Whiles, Matt R.; Gido, Keith B.

doi:10.1111/fwb.13509

Cited by 4 publications

(2 citation statements)

References 87 publications

(106 reference statements)

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“…A DNA-based MSAM could therefore improve our understanding of phenology for whole communities, temporal partitioning among functional groups, as well as the potential value of abundance information for construction of ecological networks (Freilich et al, 2018). The exclusion treatment represents a dramatic change in ecological interaction strengths and confirmed that direct fish predation can significantly depress average invertebrate abundance in the stream (Bonjour et al, 2020;Dudgeon, 1991;Williams et al, 2003;Winkelmann et al, 2011). Cages inherently alter microhabitat factors, such as flow and shading, but our Open control cages were designed to account for those confounding effects.…”

Section: Discussionmentioning

confidence: 81%

Replicate DNA metabarcoding can discriminate seasonal and spatial abundance shifts in river macroinvertebrate assemblages

Буш

Compson

Rideout

et al. 2023

Molecular Ecology Resources

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The delivery of consistent and accurate fine‐resolution data on biodiversity using metabarcoding promises to improve environmental assessment and research. Whilst this approach is a substantial improvement upon traditional techniques, critics note that metabarcoding data are suitable for establishing taxon occurrence, but not abundance. We propose a novel hierarchical approach to recovering abundance information from metabarcoding, and demonstrate this technique using benthic macroinvertebrates. To sample a range of abundance structures without introducing additional changes in composition, we combined seasonal surveys with fish‐exclusion experiments at Catamaran Brook in northern New Brunswick, Canada. Five monthly surveys collected 31 benthic samples for DNA metabarcoding divided between caged and control treatments. A further six samples per survey were processed using traditional morphological identification for comparison. By estimating the probability of detecting a single individual, multispecies abundance models infer changes in abundance based on changes in detection frequency. Using replicate detections of 184 genera (and 318 species) from metabarcoding samples, our analysis identified changes in abundance arising from both seasonal dynamics and the exclusion of fish predators. Counts obtained from morphological samples were highly variable, a feature that limited the opportunity for more robust comparison, and emphasizing the difficulty standard methods also face to detect changes in abundance. Our approach is the first to demonstrate how quantitative estimates of abundance can be made using metabarcoding, both among species within sites as well as within species among sites. Many samples are required to capture true abundance patterns, particularly in streams where counts are highly variable, but few studies can afford to process entire samples. Our approach allows study of responses across whole communities, and at fine taxonomic resolution. We discuss how ecological studies can use additional sampling to capture changes in abundance at fine resolution, and how this can complement broad‐scale biomonitoring using DNA metabarcoding.

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Section: Discussionmentioning

confidence: 81%

Replicate DNA metabarcoding can discriminate seasonal and spatial abundance shifts in river macroinvertebrate assemblages

Буш

Compson

Rideout

et al. 2023

Molecular Ecology Resources

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“…Southern redbelly dace and central stonerollers (hereafter referred to as redbelly dace and stonerollers) are two small cyprinids that impact structural (algal filament length, organic matter) and functional (stream metabolism) properties of streams (e.g., Bengtson et al., 2008 ; Bertrand & Gido, 2007 ; Bonjour et al., 2020 ; Gelwick & Matthews, 1992 ; Martin et al., 2016 ; Power & Matthews, 1983 ). Few studies have directly analyzed the relationship of fish size and their influence on stream ecosystem properties.…”

Section: Introductionmentioning

confidence: 99%

The response of stream ecosystem properties to two size classes of herbivorous minnow species

Martin

2023

Ecology and Evolution

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Losses in freshwater fish diversity might produce a loss in important ecological services provided by fishes in particular habitats. An important gap in our understanding of ecosystem services by fishes is the influence of individuals from different size classes, which is predicted based on known ontogenetic shifts in metabolic demand and diet. I used 20 experimental stream mesocosms located at Konza Prairie Biological Station (KPBS), KS, USA, to assess the influence of fish size on ecosystem properties. Mesocosms included two macrohabitats: one riffle upstream from one pool filled with consistent pebble and gravel substrate. There were four experimental and one control treatment, each replicated four times (N = 20). I used two size classes of central stonerollers (Campostoma anomalum) and southern redbelly dace (Chrosomus erythrogaster). Five ecosystem properties were assessed: algal filament length (cm), benthic chlorophyll a (μg/cm2), benthic organic matter (g/m2), macroinvertebrate biomass (g/m2), and stream metabolism (g O2/m2/day−1). Size structure of fish populations affected some, but not all, ecosystem properties, and these effects were dependent upon species identity. Size structure of both species had effects on algal filament lengths where stonerollers of both size classes reduced algal filaments, but only small redbelly dace kept filaments short. A better understanding of the relationship between these prairie stream minnows and their small stream habitats could be useful to both predict changes in stream properties if species are lost (redbelly dace are a Species In Need of Conservation) or size structure shifts.

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Restoring land–water transition areas to stimulate food web development is mediated by the hydrological connectivity

Jin,

van Leeuwen,

Bakker

2024

Ecological Indicators

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Influence of fishes on macroinvertebrate communities and insect emergence production in intermittent stream refuges

Abstract: This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

Cited by 4 publications

References 87 publications

Replicate DNA metabarcoding can discriminate seasonal and spatial abundance shifts in river macroinvertebrate assemblages

Replicate DNA metabarcoding can discriminate seasonal and spatial abundance shifts in river macroinvertebrate assemblages

The response of stream ecosystem properties to two size classes of herbivorous minnow species

Restoring land–water transition areas to stimulate food web development is mediated by the hydrological connectivity

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