Influence of Urbanization on the Distribution of Fishes in a Southeastern Upper Piedmont Drainage

Tabit, Christopher R.; Johnson, Gina M.

doi:10.1656/1528-7092(2002)001[0253:iouotd]2.0.co;2

Cited by 10 publications

(9 citation statements)

References 14 publications

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“…While many authors have documented local fish‐habitat associations in southeastern U.S.A. rivers (e.g. Wood & Bain, 1995; Bowen, Freeman & Bovee, 1998; Tabit & Johnson, 2002), this study is, to the best of our knowledge, the first to quantify zonal structure along complete (>300 km) river profiles within the region. Using a spatially extensive, abundance dataset, we detected lower, middle and upper zones in three large, southeastern rivers.…”

Section: Discussionmentioning

confidence: 99%

Scale dependence in the species‐discharge relationship for fishes of the southeastern U.S.A.

McGarvey

Ward

2008

Freshwater Biology

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1. Species-discharge relationships (SDR) are aquatic analogues of species-area relationships, and are increasingly used in both basic research and conservation planning. SDR studies are often limited, however, by two shortcomings. First, they do not determine whether reported SDRs, which normally use complete drainage basins as sampling units, are scale dependent. Second, they do not account for the effects of habitat diversity within or among samples. 2. We addressed both problems by using discrete fish zones as sampling units in a SDR analysis. To do so, we first tested for longitudinal zonation in three rivers in the southeastern U.S.A. In each river, we detected successive 'lower', 'middle', and 'upper' fish zones, which were characterized by distinct fish assemblages with predictable habitat requirements. Because our analyses combined fish data from multiple sources, we also used rarefaction and Monte Carlo simulation to ensure that our zonation results were robust to spurious sampling effects. 3. Next, we estimated the average discharge within each zone, and plotted these estimates against the respective species richness within each zone (log 10 data). This revealed a significant, linear SDR (r 2 = 0.83; P < 0.01). Notably, this zonal SDR fit the empirical data better than a comparable SDR that did not discriminate among longitudinal zones. We therefore conclude that the southeastern fish SDR is scale dependent, and that accounting for within-basin habitat diversity is an important step in explaining the high diversity of southeastern fishes. 4. We then discuss how our zonal SDR can be used to improve conservation planning. Specifically, we show how the slope of the SDR can be used to forecast potential extinction rates, and how the zonal data can be used to identify species of greatest concern.

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Section: Discussionmentioning

confidence: 99%

Scale dependence in the species‐discharge relationship for fishes of the southeastern U.S.A.

McGarvey

Ward

2008

Freshwater Biology

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“…A general observation from the fish community studies is that altered habitats in streams contained fewer fish species and a lower diversity than undisturbed habitats (e.g. Tabit & Johnson 2002; Leitao et al. 2007).…”

Section: Discussionmentioning

confidence: 99%

Environmental assessment of boreal rivers using fish data – a contribution to the Water Framework Directive

Vehanen¹,

Sutela²,

Korhonen³

2010

Fisheries Management Eco

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A fish-based assessment method was developed to estimate the ecological status of boreal rivers. Electric fishing data were collected from 902 rapids, together with information on the land use, channel modification and water chemistry. Discriminant function analysis was used to select fish variables that most correctly classified the undisturbed reference sites and human impacted sites into exact classes. The relationship between the level of human alteration and fish metrics was examined. Five metrics were selected for the index: the number of fish species, proportion of sensitive species, proportion of tolerant species, density of cyprinid individuals and the density of age-0+ salmonids. The value for each metric (between 0 and 1) was calculated according to a point estimate for classical probability. The index is used to estimate the ecological classification of rivers according to the EU Water Framework Directive.

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“…Declines in stream habitat quality such as increased turbidity and sedimentation may negatively affect stream fishes by reducing prey abundance or foraging success or degrade spawning or nonspawning habitats (Hatch 1985; Sutherland et al. 2002; Tabit & Johnson 2002; Bolliet et al. 2005).…”

Section: Discussionmentioning

confidence: 99%

Microhabitat use, movements and abundance of gilt darters (Percina evides) in southern Appalachian (USA) streams

Skyfield

Grossman

2007

Ecology of Freshwater Fish

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– We examined microhabitat use by gilt darters (Percina evides) in two streams in the south‐eastern USA. Darters were over‐represented in erosional microhabitats with higher average velocities and more cobble. Male darters tended to show stronger selection than females. Size‐based analyses showed that larger (≥60 mm) gilt darters tended to use microhabitats with more heterogeneous substrata and more boulder than smaller (≤59 mm) darters. We also conducted a short‐term movement study and calculated population estimates based on mark–recapture data in autumn 2005. Darters moved both long and short distances with 40% of all recaptures occurring within 5 m of the initial capture point. Using Program mark and model‐averaged parameter estimates gilt darter density was 0.31 darters·m−2 (225 darters/730 m2). Conservation of this species will require the preservation of erosional habitats in streams.

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Influence of Urbanization on the Distribution of Fishes in a Southeastern Upper Piedmont Drainage

Cited by 10 publications

References 14 publications

Scale dependence in the species‐discharge relationship for fishes of the southeastern U.S.A.

Scale dependence in the species‐discharge relationship for fishes of the southeastern U.S.A.

Environmental assessment of boreal rivers using fish data – a contribution to the Water Framework Directive

Microhabitat use, movements and abundance of gilt darters (Percina evides) in southern Appalachian (USA) streams

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