Stream Erosion and Densities of Etheostoma rubrum (Percidae) and Associated Riffle-Inhabiting Fishes: Biotic Stability in a Variable Habitat

Ross, Stephen T.; O'Connell, Martin T.; Patrick, David M.; Latorre, Carlos A.; Slack, William T.; Knight, Jeremy G.; Wilkins, Selwyn

doi:10.1643/0045-8511(2001)001[0916:seadoe]2.0.co;2

Cited by 12 publications

(44 citation statements)

References 17 publications

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“…In recent population studies of E. rubrum, based on a random, stratified sampling program, we have shown that the greatest population densities were in the upper reaches of Bayou Pierre in areas of active erosion (stage II, cf. Schumm et al 1984), or just below such areas (stage III, Ross et al 2001). Consequently, we hypothesize that metapopulation structure of E. rubrum may include source-sink dynamics (sensu Pulliam 1988), whereby downstream local populations are a sink for larvae or early juveniles originating from high population densities in upstream riffle areas.…”

Section: Introductionmentioning

confidence: 89%

“…Sampling was restricted to the lower 3 km of the stream (T01N, R04W,Sec 8,9,16,17) which is characterized as erosional stage III (hereafter termed stage) and which supports high densities of E. rubrum (Ross et al 2001). Larval sampling occurred during summer low-flow within the known (April through August) spawning period of E. rubrum .…”

Section: Sampling Of Larvaementioning

confidence: 99%

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Ecology and population structure of the bayou darter, Etheostoma rubrum: disjunct riffle habitats and downstream transport of larvae

Slack

Ross

Ewing

2004

Environmental Biology of Fishes

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SynopsisThe bayou darter, Etheostoma rubrum (Percidae), is endemic to the Bayou Pierre system in Mississippi. Adult and juvenile E. rubrum occupy swift, shallow riffles or runs over coarse gravel and pebble substrata. Habitat requirements of larval and post-larval stages, and the role of downstream dispersal of larvae in colonizing riffles are poorly known. The potential for movement and the high level of habitat specificity for the discontinuous riffle habitat suggest that E. rubrum may comprise a metapopulation of linearly arranged local populations. The greatest population densities of E. rubrum occur in the upper reaches of Bayou Pierre. We hypothesized that metapopulation structure of E. rubrum may include source-sink dynamics, whereby downstream areas are a sink for larvae/early juveniles originating upstream. We tested hypotheses that a transport mechanism, larval drift, occurred in E. rubrum, and that downstream riffles showed characteristics of population sinks. We captured larval stages of E. rubrum in cross-sectional and longitudinal drift nets, and rates of drift tended to increase during the day. Larval E. rubrum (n ¼ 19) occurred in samples above and below riffle areas, with no differences among longitudinal drift nets placed above and below riffles. Thus, larval drift is a viable transport mechanism. Relative abundance of adults and juveniles declined from upstream to downstream, and inter-riffle distances increased with cumulative downstream distance. However, both predictions of the source-sink hypothesis were not supported. The distribution of size classes did not change between upstream and downstream riffles nor did the mean size-adjusted body mass.

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Section: Introductionmentioning

confidence: 89%

Section: Sampling Of Larvaementioning

confidence: 99%

Ecology and population structure of the bayou darter, Etheostoma rubrum: disjunct riffle habitats and downstream transport of larvae

Slack

Ross

Ewing

2004

Environmental Biology of Fishes

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“…Recent research has suggested that human-induced disturbances in Gulf Coastal Plain drainages cause severe geomorphic instability in these easily eroded, alluvial streams (Box and Mossa 1999;Patrick et al 1991;Ross et al 2001), and disproportionately impact benthic organisms (Box and Mossa 1999;Hartfield 1993). In the Pearl River drainage, accelerated erosion and geomorphic instability have lead to distinct changes in the percid fish community, particularly in areas inhabited by the frecklebelly madtom (Tipton et al, in press).…”

mentioning

confidence: 99%

Decline of the Frecklebelly Madtom in the Pearl River Based on Contemporary and Historical Surveys

2004

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Abstract.-The Pearl River has experienced numerous human-caused disturbances since the 1950s, including completion of a navigation channel, reservoir construction, and channel modifications on the main stem of the river. These types of disturbances are known to negatively impact the biotic and abiotic components of riverine ecosystems. Since the 1960s, several fish species in the drainage have declined in abundance or have been extirpated from the drainage. We undertook this study to assess the current conservation status of the frecklebelly madtom Noturus munitus in the Pearl River drainage. A 1999 survey of 53 sites within the historic range of the frecklebelly madtom yielded only 13 specimens from eight localities. We also examined historical population trends for the frecklebelly madtom and other benthic fishes using archived museum material . After standardizing for variation in collection effort, analysis of long-term collection data indicated that frecklebelly madtom populations have declined significantly since the 1960s. Despite greater sampling effort in the postmodification period , frecklebelly madtoms were most abundant in samples during the modification period (1950)(1951)(1952)(1953)(1954)(1955)(1956)(1957)(1958)(1959)(1960)(1961)(1962)(1963)(1964). Similar declines were observed for the brighteye darter Etheostoma lynceum, a gravel-riffle-dependent species. Other percid taxa (including the crystal darter Crystallaria asprella (formerly Ammocrypta asprella), the saddleback darter Percina vigil, the Gulf logperch P. suttkusi, and the dusky darter P. sciera) showed no significant changes between modification and postmodification periods. However, benthic taxa (including the naked sand darter Ammocrypta beani, longnose shiner Notropis longirostris, channel catfish Ictalurus punctatus, hogchoker Trinectes maculatus, gulf darter E. swaini, speckled chub Macrhybopsis aestivalis, and silver chub M. storeriana) increased in abundance between modification and postmodification study periods. We suggest that channel changes and the loss of gravel substrates are related and are contributing to the decline of the frecklebelly madtom in the Pearl River drainage.

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“…Although channelization, incision, and headcutting are known to influence stream faunal assemblages (Gordon S et al 1992;Shields et al 1994;Ross et al 2001), a diverse stream fauna persists in the study area (Warren et al 2002). More than 35 fish and five crayfish species commonly occur in the streams.…”

Section: Introductionmentioning

confidence: 99%

Crayfish Use of Trash Versus Natural Cover in Incised, Sand-Bed Streams

Adams

2013

Environmental Management

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Historic land use changes and subsequent river channelization created deeply incised, unstable stream channels largely devoid of natural cover throughout the Yazoo River basin, Mississippi, USA. Large trash (e.g., televisions, toilets, car parts) dumped in streams provided shelter for some aquatic fauna. To determine whether trash served as a surrogate for natural cover, I examined crayfish use of both cover types. I sampled crayfishes by kickseining 2 9 1-m plots in three cover classes: trash, natural cover, and no cover. I captured 415 crayfishes from 136 of the 294 plots. Most crayfishes were in natural cover (253), followed by trash (154), and no-cover (8) plots. Trash use varied by crayfish genus and size. Frequencies of all size classes of Procambarus and of the smallest Cambarus were higher in natural cover than trash. Many of the smallest individuals were found in live root mats. As Cambarus and Orconectes grew, they shifted more toward trash, and the largest Orconectes size class was significantly more abundant than expected in trash. Trash served as ''artificial reefs,'' providing cover for crayfishes and other fauna, but functioned differently than the remaining natural cover. The results confirmed that stream substrate did not provide adequate instream cover for crayfishes in the study area and suggested that high-quality natural cover for large crayfishes was in short supply, at least for some species. Land management that provides for abundant, ongoing input and retention of complex cover, such as trees and live roots, to stream channels should be beneficial for crayfish assemblages.

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Stream Erosion and Densities of Etheostoma rubrum (Percidae) and Associated Riffle-Inhabiting Fishes: Biotic Stability in a Variable Habitat

Cited by 12 publications

References 17 publications

Ecology and population structure of the bayou darter, Etheostoma rubrum: disjunct riffle habitats and downstream transport of larvae

Ecology and population structure of the bayou darter, Etheostoma rubrum: disjunct riffle habitats and downstream transport of larvae

Decline of the Frecklebelly Madtom in the Pearl River Based on Contemporary and Historical Surveys

Crayfish Use of Trash Versus Natural Cover in Incised, Sand-Bed Streams

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