Patterns in Freshwater Fish Ecology

Matthews, William J.

doi:10.1007/978-1-4615-4066-3

Cited by 985 publications

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“…In such cases, the watershed acts as a barrier to the dispersal of species between basins. However, fish community structure is also thought to be influenced by biotic and abiotic factors, which operate and interact on various spatial and temporal scales (Angermeier and Winston, 1998;Matthews, 1998). On a regional scale, physical characteristics, such as stream size (Angermeier and Karr, 1984), water velocity (Mendonça et al, 2005), depth (Angermeier and Karr, 1984;Martin-Smith, 1998), and habitat diversity (Gorman and Karr 1978;Angermeier and Schlosser, 1989), or physico-chemical properties, such as electrical conductivity (Taylor et al, 1993;Mérigoux et al, 1998) and pH (Townsend et al, 1983), have also been considered to be factors that govern the occurrence and distribution of fish species.…”

Section: Introductionmentioning

confidence: 99%

Effects of isolation and environmental variables on fish community structure in the Brazilian Amazon Madeira-Purus interfluve

et al. 2013

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Due to the existence of terrestrial barriers to freshwater fish dispersion, it is believed that its distribution is strongly associated with historical factors related to the formation of the habitats they occupy. By the other hand, some studies reveal the influence of abiotic conditions (such as size of water bodies, pH, conductivity) on the composition of fish fauna occurring in small streams. This study aimed to investigate whether drainage basins, because catchment boundaries are potential barriers to fish dispersion, or the physical structure and physico-chemical characteristics of water have a greater influence on fish community structure in small streams. We sampled 22 streams belonging to five drainage basins in the Madeira-Purus interfluve. Fish were caught with dip nets and a small trawl, and data were simultaneously obtained on structural characteristics of the streams and physico-chemical characteristics of the water. Community composition was analyzed using Non-Metric Multidimensional Scaling (NMDS), and variables related to structural and physico-chemical characteristics were summarized by Principal Component Analysis (PCA). Two explanatory models relating faunal composition to environmental factors were constructed: the first using only continuous variables and the second including the drainage basin as a categorical variable. The Akaike Information Criterion (AIC) and AIC weight were used to select the best model. Although structural and physico-chemical variables significantly contributed to explaining faunal composition, the model including the drainage basin was clearly the better of the two models (more than 90% support in the data). The importance of drainage basins in structuring fish communities in streams may have significant consequences for conservation planning in these environments.Keywords: Ichthyofauna, fish ecology, physical variables, chemical variables, western Amazon. Efeito do isolamento e das variáveis ambientais na estrutura de comunidades de peixes do interflúvio Madeira-Purus na Amazônia brasileira ResumoDevido à existência de barreiras terrestres à dispersão de peixes de água doce, acredita-se que sua distribuição é fortemente associada a fatores históricos relacionados à formação dos habitats que ocupam. Por outro lado, alguns estudos revelam a influência de condições abióticas (tais como o tamanho do corpo d'água, pH, condutividade) na composição da fauna ictiíca de rios de pequena ordem. Este trabalho teve como objetivo investigar se bacias hidrográficas, cujo divisor de águas representa uma potencial barreira para a dispersão dos peixes, ou a estrutura física e características físico-químicas da água têm maior efeito sobre a estrutura de comunidades de peixes de riachos de pequena ordem.

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Section: Introductionmentioning

confidence: 99%

Effects of isolation and environmental variables on fish community structure in the Brazilian Amazon Madeira-Purus interfluve

et al. 2013

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“…This can provide opportunities for more rare species to compete with once predominant species after the environmental conditions have changed. A primary focus of aquatic ecology is to understand how severe environmental changes can alter fish assemblages (Matthews 1998), although there are few studies connecting major disturbances with significant changes in the composition of freshwater fish assemblages (Tillman 1989;Dolloff et al 1994;Collins 2000).…”

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Effects of Hurricane Katrina on Freshwater Fish Assemblages in a Small Coastal Tributary of Lake Pontchartrain, Louisiana

Vrancken

O'Connell

2010

Trans Am Fish Soc

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Hurricane Katrina struck southeastern Louisiana on 29 August 2005 and thereby created an opportunity to examine the effects of a catastrophic storm on fish assemblages in a coastal stream. Bayou Lacombe is a small (46.1 river kilometers), primarily freshwater stream that drains into the northeastern portion of Lake Pontchartrain, a large oligohaline estuary located north of New Orleans. In summer 2005 (prior to the hurricane), three upstream and three downstream reaches of Bayou Lacombe were surveyed by electrofishing. These same six reaches were resurveyed in the summer of 2006 to assess the effects of the hurricane on fish assemblages. There were significant changes in fish assemblages at the downstream and upstream reaches. At the downstream reaches, centrarchid species such as bluegill Lepomis macrochirus, warmouth L. gulosus, and redspotted sunfish L. miniatus increased in abundance after the hurricane, as did inland silverside Menidia beryllina and striped mullet Mugil cephalus, both estuarine‐dependent species. At the upstream reaches, longear sunfish L. megalotis decreased after the hurricane and weed shiners Notropis texanus, goldstriped darters Etheostoma parvipinne, and warmouth were absent from posthurricane samples. Principal components and BEST analyses showed that differences in dissolved oxygen between years were related to fish assemblage changes in the upstream reaches. Salinity and temperature were associated with fish assemblage changes in the downstream reaches. Similar significant changes could occur in other coastal streams prone to increased hurricane activity.

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“…The short-term and long-term movement patterns of many benthic fishes are unknown, but, in general, home ranges appear to be small. While there has been considerable research on fish movements in general (see reviews by Gowan et al 1994;Matthews 1998;Rodriguez 2002), most work has focused on salmonids and other sport fish.Previous research has indicated that most freshwater sculpins (Cottidae) do not move frequently or far (see Table 1 for a detailed summary), but no current information has been published on the movement patterns of Potomac sculpin Cottus girardi. Matheson (1979) and Jenkins and Burkhead (1993) do, however, summarize the general ecology and taxonomy of the Potomac sculpin.…”

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Movement and Recolonization of Potomac Sculpin in a Virginia Stream

Hudy¹,

Shiflet²

2009

N American J Fish Manag

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Abstract.-Movement patterns of benthic fishes have not been widely studied, but an understanding of those movement patterns may be necessary in assessing the full effects of habitat fragmentation and the need to restore connectivity in fragmented watersheds. We evaluated nonspawning movement of 3,353 marked Potomac sculpin Cottus girardi over a 1-year period on a 3.14-km segment of a third-order stream. In addition, we conducted a fish removal experiment at the pool-riffle sequence scale (90 m) to evaluate the effects of fish density on movement and recolonization rates. The majority of recaptured Potomac sculpin stayed within 30 m of their original capture location throughout the study (81% at 30 d; 64% at 75 d; 53% at 363 d). Upstream (US) movement was greater than downstream (DS) movement at 30 d (US 17%; DS 3%), 75 d (US 30%, DS 6%) and 363 d (US 32%, DS 15%). After 75 d, 10% of the fish that moved upstream moved more than 250 m (21% after 363 d). The maximum distance moved was 1,711 m in 75 d. There were no significant differences in mean total length between recaptured Potomac sculpin that either moved or did not move or between upstream and downstream movers. The presence or absence of fishes in adjacent 30-m habitat sections influenced upstream, but not downstream, movement of Potomac sculpin. After 30 d, Potomac sculpin population densities and size structure were similar between fish removal and reference sections. We found our results to be similar to those of other studies, which found that, on average, freshwater sculpin are sedentary. However, we identified great dispersal capabilities (.250 m) for a small percentage of Potomac sculpin. The long dispersal distances suggest that this typically sedentary species may need greater habitat connectivity than previously assumed.Information on movement is necessary for assessing the full effects of fragmentation and a species' population needs when restoring connectivity in fragmented watersheds. The short-term and long-term movement patterns of many benthic fishes are unknown, but, in general, home ranges appear to be small. While there has been considerable research on fish movements in general (see reviews by Gowan et al. 1994;Matthews 1998;Rodriguez 2002), most work has focused on salmonids and other sport fish.Previous research has indicated that most freshwater sculpins (Cottidae) do not move frequently or far (see Table 1 for a detailed summary), but no current information has been published on the movement patterns of Potomac sculpin Cottus girardi. Matheson (1979) and Jenkins and Burkhead (1993) do, however, summarize the general ecology and taxonomy of the Potomac sculpin.Bailey (1952) concluded that mottled sculpin Cottus bairdii were relatively sedentary, with typical yearly movements of 50 m. McCleave (1964) estimated the home range of mottled sculpin to be less than 50 m. In two Montana streams, mottled sculpin movement during nonspawning times (June and July) was found to be short (mean ¼ 1.2 m) and haphazard (no preference for upstream or ...

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Patterns in Freshwater Fish Ecology

Cited by 985 publications

References 0 publications

Effects of isolation and environmental variables on fish community structure in the Brazilian Amazon Madeira-Purus interfluve

Effects of isolation and environmental variables on fish community structure in the Brazilian Amazon Madeira-Purus interfluve

Effects of Hurricane Katrina on Freshwater Fish Assemblages in a Small Coastal Tributary of Lake Pontchartrain, Louisiana

Movement and Recolonization of Potomac Sculpin in a Virginia Stream

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