Extinctions of North American Fishes During the past Century

Miller, Robert Rush; Williams, James D.; Williams, Jack E.

doi:10.1577/1548-8446(1989)014<0022:eonafd>2.0.co;2

Cited by 420 publications

(307 citation statements)

References 32 publications

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“…Whittier et al (1997) reported that piscivores, especially nonnative piscivores introduced to improve fishing, were associated with lower minnow species richness (lower IBI scores) in northeastern U.S. lakes. Many other authors have also raised concerns about the association of nonnative game fish-deliberately introduced to improve fisheries-with declines or extirpation of native fishes (e.g., Miller et al 1989;Rahel 2002;Sanderson et al 2009). Clearly, fishery quality is often a fundamentally different ecological endpoint or ecosystem service than fish assemblage condition as measured by an IBI or by native species richness.…”

Section: Discussionmentioning

confidence: 99%

A Preliminary Fishery Quality Index for Portuguese Streams

Oliveira¹,

Ferreira²,

Morgado³

et al. 2009

N American J Fish Manag

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Abstract.-There is a need to quantify the multivariate quality of a recreational fishery at the site scale to better communicate the relative quality among sites to the public and anglers. Borrowing on the general approach of multimetric indices of biotic integrity (IBIs), we developed fishery quality indices (FQIs) from species quality indices (SQIs) based on measures of fish abundance and size structure for northern and central Portuguese streams. Our FQIs showed regional patterns indicating a range in fishery quality. Higher coldwater FQI scores were mostly found in the northwestern (Minho and Lima), northeastern Douro, and northern Tagus basins. Higher warmwater FQI scores occurred in the eastern Tagus basin. The species that contributed the most to warmwater FQI scores were largemouth bass Micropterus salmoides, pumpkinseed Lepomis gibbosus, the cyprinid Luciobarbus bocagei, chubs Squalius carolitertii and S. pyrenaicus, and nases Pseudochondrostoma duriense and P. polylepis. The chubs, nases, and brown trout Salmo trutta contributed the most to coldwater FQI scores. As expected, our indices were correlated with river size and with disturbance at the catchment, segment, and site scales. Regression models for separate coldwater and warmwater FQIs were stronger than those for the individual SQIs and for an all-site FQI. The correlation was positive between the coldwater FQI and a coldwater IBI but negative between the warmwater FQI and warmwater IBIs. The proposed FQIs offer a quantitative approach for assessing relative fishery quality among sites and for making regional assessments given an appropriate study design. The component SQIs and SQI metrics of the FQIs can be disassociated to determine the population and species characteristics most affected by various environmental variables.

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Section: Discussionmentioning

confidence: 99%

A Preliminary Fishery Quality Index for Portuguese Streams

Oliveira¹,

Ferreira²,

Morgado³

et al. 2009

N American J Fish Manag

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“…The major factors responsible for this rapid decline in freshwater species are physical alteration, habitat loss, water withdrawal, pollution, overexploitation and the introduction of non-native species (Sala et al, 2000;Millennium Ecosystem Assessment, 2005;Revenga et al, 2005). Habitat alteration is cited as a leading cause of extinction in general, and has contributed to 73% (Miller et al, 1989) of the fish extinctions in North America during the twentieth century (Allan and Flecker, 1993;Sala et al, 2000). In this study, focus is on the effects of catchment alteration and increasing nutrient concentrations on macroinvertebrate and fish biodiversity in rivers and streams.…”

Section: Introductionmentioning

confidence: 99%

Quantifying the effect of catchment land use and water nutrient concentrations on freshwater river and stream biodiversity

Weijters

Janse

Alkemade

et al. 2008

Aquatic Conservation

134

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ABSTRACT1. A major threat to freshwater taxon diversity is the alteration of natural catchment Land use into agriculture, industry or urban areas and the associated eutrophication of the water. In order to stop freshwater biodiversity loss, it is essential to quantify the relationships between freshwater diversity and catchment Land use and water nutrient concentrations.2. A literature survey was carried out on biodiversity data from rivers and streams. Fish and macroinvertebrates were selected as focal groups as they are widely used as indicator species of river and stream health. Only published data were selected that (a) compared data found at impaired sites with a pristine reference situation (either in time or space), (b) clearly defined the stressors studied (Land use cover and/or nutrient concentrations), and (c) clearly defined biodiversity (number of native species, species lists or IBI-scores).3. The number of native taxa found in each study was transferred in an index of relative taxon richness (RTR) ranging from 0 (severely altered) to 100 (pristine reference conditions). Only those taxa were included that were (at least) present in the most pristine situation. This made it possible to combine, compare and analyse results from different studies. Catchment Land use was expressed as the percentage of non-natural Land use (agriculture, industry, housing or mining). As a measure of nutrients, the concentrations of NO 3 , NH 4 , PO 4 , total N and total P in the river and stream water were used.4. Over 240 published articles have been studied, but only 22 met the criteria described above and could be used for further analysis.5. This study showed that altered catchment Land use has a major effect on freshwater biodiversity and that the rate of species loss is serious; on average every 10% of lost natural catchment Land use cover leads to a loss of almost 6% ( AE 0.83) of the native freshwater fish and macroinvertebrate species.

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“…river or lake basins) with very reduced ability for inter-basin movement (Hocutt and Wiley, 1986;Unmack, 2001), in contrast with the relatively free-moving marine fishes, lays in the base of the conservation problems of the former (Richter et al, 1997). The decline of freshwater fishes is a generalised phenomenon noticeable on global (Duncan and Lockwood, 2001;Cowx and Collares-Pereira, 2002), regional and local (Miller et al, 1989;Crivelli, 1996;Moyle and Randall, 1998;López-Rojas and Bonilla-Rivero, 2000) scales. The principal threats to freshwater fishes are the deterioration or destruction of habitats, both by pollution and intense modifications (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Species introductions have been frequently cited as an important threat to native freshwater fauna, including amphibians and fishes (Miller et al, 1989).…”

Section: Introduced Species Dams and Conservation Statusmentioning

confidence: 99%

Fish fauna in Iberian Mediterranean river basins: biodiversity, introduced species and damming impacts

Clavero

Blanco

Prenda

2004

Aquatic Conservation

143

137

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1.We used a basin approximation to analyse distribution patterns of different components of biodiversity (taxonomic richness, endemicity, taxonomic singularity, rarity) and conservation status of freshwater fish fauna in 27 Mediterranean Iberian rivers. 2.Basin area alone explained more than 80% of variation in native species richness. Larger basins featured not only a higher number of native species, but also more endemic and rare species and less diversified genera than smaller ones. 3.In contrast, smaller basins scored higher community conservation values, due to their lower degree of invasion by introduced species. 4.The presence of dams was the most important factor determining the conservation status of fish communities, and it was also positively associated with the number of introduced species. 5.While the most important components of Iberian freshwater fish biodiversity are located in large basins, small unregulated ones feature better conserved fish communities.2

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Extinctions of North American Fishes During the past Century

Cited by 420 publications

References 32 publications

A Preliminary Fishery Quality Index for Portuguese Streams

A Preliminary Fishery Quality Index for Portuguese Streams

Quantifying the effect of catchment land use and water nutrient concentrations on freshwater river and stream biodiversity

Fish fauna in Iberian Mediterranean river basins: biodiversity, introduced species and damming impacts

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