Fishes of North America Endangered, Threatened, or of Special Concern: 1989

Deacon, James E.; Kobetich, Gail; Williams, Jeffrey; Contreras, S.

doi:10.1577/1548-8446(1989)014<0002:fonaet>2.0.co;2

Cited by 409 publications

(248 citation statements)

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“…Native fish species were prominent in the drainages of the Mississippi River (Figure 2g). High endemic areas of freshwater fishes also coincide with the unique geologic history of the southern Appalachians (Williams et al 1989;Warren and Burr 1994). Likewise, California has an overwhelming abundance of total species and endemic species (Dobson et al 1997), in part due to its unique paleo-biogeography (Stebbins and Major 1965), high habitat heterogeneity, large area, and abundant soil and water resources in many areas (see Stein et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Species Richness and Patterns of Invasion in Plants, Birds, and Fishes in the United States*

et al. 2006

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We quantified broad-scale patterns of species richness and species density (mean # species/km 2 ) for native and non-indigenous plants, birds, and fishes in the continental USA and Hawaii. We hypothesized that the species density of native and non-indigenous taxa would generally decrease in northern latitudes and higher elevations following declines in potential evapotranspiration, mean temperature, and precipitation. County data on plants (n = 3004 counties) and birds (n=3074 counties), and drainage (6 HUC) data on fishes (n = 328 drainages) showed that the densities of native and nonindigenous species were strongly positively correlated for plant species (r = 0.86, P < 0.0001), bird species (r = 0.93, P<0.0001), and fish species (r = 0.41, P<0.0001). Multiple regression models showed that the densities of native plant and bird species could be strongly predicted (adj. R 2 =0.66 in both models) at county levels, but fish species densities were less predictable at drainage levels (adj. R 2 = 0.31, P<0.0001). Similarly, non-indigenous plant and bird species densities were strongly predictable (adj. R 2 = 0.84 and 0.91 respectively), but non-indigenous fish species density was less predictable (adj. R 2 = 0.38). County level hotspots of native and non-indigenous plants, birds, and fishes were located in low elevation areas close to the coast with high precipitation and productivity (vegetation carbon). We show that (1) native species richness can be moderately well predicted with abiotic factors; (2) human populations have tended to settle in areas rich in native species; and (3) the richness and density of non-indigenous plant, bird, and fish species can be accurately predicted from biotic and abiotic factors largely because they are positively correlated to native species densities. We conclude that while humans facilitate the initial establishment, invasions of non-indigenous species, the spread and subsequent distributions of non-indigenous species may be controlled largely by environmental factors.

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Section: Discussionmentioning

confidence: 99%

Species Richness and Patterns of Invasion in Plants, Birds, and Fishes in the United States*

et al. 2006

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“…The underlying mechanisms and processes that gave rise to cave biodiversity and its ecology constitute one of the major research themes for modern biospeleology (Peck & Finston, 1993;Sket, 1999;Juan et al, 2010). Stygobitic fish, particularly eel-like fish (orders Ophidiiformes, Synbranchiformes) and eleotrids (order Perciformes), can be encountered in anchialine caves (Williams et al, 1989;Humphreys, 2001a;Medina-Gonzalez et al, 2001;Wilkens, 2001;Larson et al, 2013). However, these habitats are clearly dominated by invertebrates both in terms of diversity and biomass (Iliffe, 2002).…”

Section: Ecology and Biodiversity Of Anchialine Cavesmentioning

confidence: 99%

Life in the Underworld: Anchialine cave biology in the era of speleogenomics

Pérez‐Moreno

Iliffe²,

Bracken‐Grissom³

2016

IJS

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Abstract:Anchialine caves contain haline bodies of water with underground connections to the ocean and limited exposure to open air. Despite being found on islands and peninsular coastlines around the world, the isolation of anchialine systems has facilitated the evolution of high levels of endemism among their inhabitants. The unique characteristics of anchialine caves and of their predominantly crustacean biodiversity nominate them as particularly interesting study subjects for evolutionary biology. However, there is presently a distinct scarcity of modern molecular methods being employed in the study of anchialine cave ecosystems. The use of current and emerging molecular techniques, e.g., next-generation sequencing (NGS), bestows an exceptional opportunity to answer a variety of long-standing questions pertaining to the realms of speciation, biogeography, population genetics, and evolution, as well as the emergence of extraordinary morphological and physiological adaptations to these unique environments. The integration of NGS methodologies with traditional taxonomic and ecological methods will help elucidate the unique characteristics and evolutionary history of anchialine cave fauna, and thus the significance of their conservation in face of current and future anthropogenic threats. Here we review previous contributions to our understanding of anchialine biodiversity and evolution, and discuss the potential of "speleogenomic" methods for future research in these threatened systems.

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“…Introductions provide opportunities to examine responses of local communities to invasion and to draw inferences about community saturation. Although introduced fishes are widely thought to be key agents of endangerment for native fishes (Williams et al 1989, Flather et al 1994 there are few focused studies that clearly compare the community structure of pre-and post-introduction scenarios. Success rates for introducing stream fishes, which should be inversely related to community saturation, are highly variable among systems (Ross 1991), but some patterns are consistent with expectations for saturated communities.…”

Section: Introductionmentioning

confidence: 99%

Local vs. Regional Influences on Local Diversity in Stream Fish Communities of Virginia

Angermeier¹,

Winston²

1998

Ecology

137

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Abstract. Local species richness is a function of many factors operating at multiple spatial and temporal scales. We examined stream fish communities from regions throughout Virginia to assess (1) the relative influence of local vs. regional factors on local species richness, (2) evidence for community saturation, and (3) scale dependency of regional influences. We defined regions at four spatial scales: major drainages, drainage-physiography units, hydrologic-physiography units, and sites. We used multiple regression to identify key correlates of local native and introduced diversity for each regional scale. Both local (e.g., microhabitat diversity) and regional (e.g., species richness) factors were correlated with local diversity; regional diversity was the most consistent correlate. Plots of local vs. regional native diversity were asymptotic for the three largest regional definitions, thereby suggesting community saturation. However, analogous plots for introduced species were not asymptotic; local introduced diversity was a linear function of regional introduced diversity. Introduced populations were pervasive, but less abundant locally than native populations, thereby suggesting that native species are better adapted. Overall, stream fish communities in Virginia appeared to be neither completely saturated nor freely invadable.The ability of regression models and particular independent variables to account for variation in local diversity changed considerably with regional scale. Most regional correlates of local diversity were scale dependent. The concept of hierarchical environmental filters provides a useful framework for integrating the multiple scales over which ecological processes organize communities. Retrospective analyses of the impacts of introduced species on native communities provide some insight regarding community saturation, but conclusive evidence must await studies that couple comparative and experimental approaches. Clear interpretation of regional influences on local diversity will require careful definition of regions. Comparative analyses at multiple regional scales may be the most insightful approach to understanding the complete array of processes that organize communities.

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Fishes of North America Endangered, Threatened, or of Special Concern: 1989

Cited by 409 publications

References 0 publications

Species Richness and Patterns of Invasion in Plants, Birds, and Fishes in the United States*

Species Richness and Patterns of Invasion in Plants, Birds, and Fishes in the United States*

Life in the Underworld: Anchialine cave biology in the era of speleogenomics

Local vs. Regional Influences on Local Diversity in Stream Fish Communities of Virginia

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