Fish assemblage changes along a trophic gradient induced by agricultural activities (Santa Lucía, Uruguay)

Chalar, Guillermo; Delbene, Lucia; González‐Bergonzoni, Ivan; Arocena, Rodrigo

doi:10.1016/j.ecolind.2012.08.010

Cited by 45 publications

(28 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, at the catchment scale, the topography and land use/cover within a catchment may affect water-source supply and nutrient and sediment inflow (Omernik 2004;Wang et al 2006), and influence the distributions and abundance of stream fishes thereafter (Allan 2004;Wang et al 2006;Lange et al 2014). Numerous researchers have documented the correlations between stream fish assemblages and forest cover (Jones et al 1999;Sutherland et al 2002), farmland use (Heitke et al 2006;Chalar et al 2013) and urbanization (Weaver & Garman 1994;Morgan & Cushman 2005).…”

Section: Introductionmentioning

confidence: 99%

Effects of local, river-network and catchment factors on fish assemblages in the headwater streams of the Xin'an basin, China

Zhu

Wang

et al. 2017

Journal of Freshwater Ecology

View full text Add to dashboard Cite

Identifying the spatial pattern of fish assemblages and the correlation between fish assemblages and environmental factors is basic for conserving and managing stream fishes. Based on data collected from 91 sampling segments within first-order through third-order streams of the Xin'an basin, China, we examined the spatial variation of fish assemblages in this area and related it to local, river-network and catchment factors. We found that fish species richness significantly increased from first-order to second-and third-order streams, but assemblage structures showed no among-stream variation. When the independent influence of the three categories of factors was considered, fish assemblages were significantly related to local habitat (e.g. wetted and substrate heterogeneity), tributary spatial position (e.g. confluence link and distance from mouth) and land use (e.g. agriculture and urbanization areas), respectively. However, when the effects of the these factors were considered jointly, local habitat and tributary spatial position were more important in influencing fish assemblages than land use. Our results suggest that fish assemblages in the headwater streams of the Xin'an basin were mainly determined by both local and spatial factors. The landscape data should be further refined in the future to provide more information for assessing how land use influence stream fishes.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of local, river-network and catchment factors on fish assemblages in the headwater streams of the Xin'an basin, China

Zhu

Wang

et al. 2017

Journal of Freshwater Ecology

View full text Add to dashboard Cite

show abstract

“…The trophic guilds of the ten representative species also were not related to the ecoregion; omnivores and carnivores or invertivores were found across regions. Other studies have shown that trophic guilds change longitudinally (Vannote et al 1980) and with increasing degradation, such that species with specialized diets (e.g., carnivores, invertivores, herbivores) decrease, while those fish with generalized diets (i.e., omnivores) increase (Quist et al 2005;Pont et al 2006;Schmutz et al 2007;Chalar et al 2013). Goldstein and Meador (2004) found, however, that the high frequency of invertivores remained constant even as stream size increased, thus demonstrating the variability of trophic responses and the potential role of the flood-pulse concept in providing food sources to large floodplain rivers.…”

Section: Discussionmentioning

confidence: 97%

“…Water quality and habitat structure are essential local factors for determining fish distribution (Pinto et al 2009). Fish have been shown to be sensitive indicators of water quality (Chalar et al 2013); community condition is variously associated with water quality parameters, such as water temperature, dissolved oxygen, pH, total dissolved solids, nitrogen, and phosphorus (Meador and Goldstein 2003;Hering et al 2006;Pinto et al 2009). Fish also respond negatively to heavy metal concentrations, either dissolved or within sediments, and total suspended solids (Griffith et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Differences in stream fish assemblages subjected to different levels of anthropogenic pressure in the Taizi River catchment, China

et al. 2015

View full text Add to dashboard Cite

This study was conducted in the Taizi River catchment, located in northeastern China. Six representative streams in three regions (upper mountains, middle hills, lower plains) with different levels of anthropogenic disturbances were surveyed to describe the structure of fish assemblages and their relationship to environmental parameters. The results showed that the fish assemblages were significantly different among the three regions in the Taizi River catchment. Indicator species analysis found ten representative fish species in the Taizi River catchment and four species in the upper, four species in the middle, and two species in the lower regions. The ecological traits of the representative fish species were generally in agreement with the physiochemical features of the streams located within different regions. Multivariate analysis indicated that altitude, water temperature, and total nitrogen were the three most significant environmental parameters influencing the fish assemblage structure in the Taizi River catchment. Based on the different environmental features and fish assemblages found in each region, fish management and conservation strategies should be tailored to the specific characteristics of each region.

show abstract

“…The degraded water condition at river downstream was dominated by Barilius pakistanicus which has omnivore feeding habit and was tolerant to degradations of environmental conditions like high nutrient loadings and conductivity. Disturbed water quality often favors the occurrence of omnivore individuals as they are more tolerant of degradation (Chalar et al, 2013). Omnivore fauna has the diverse feeding habits and relies on diverse sources for their food which make them tolerant to degrading ecosystem (Das and Chakarbarty, 2007).…”

Section: Impact Of Environmental Conditionsmentioning

confidence: 99%

Spatial and seasonal dynamics of fish assemblage along river Soan, Pakistan and its relationship with environmental conditions

Nazeer

Hashmi

Malik

2016

Ecological Indicators

View full text Add to dashboard Cite

Fish assemblage changes along a trophic gradient induced by agricultural activities (Santa Lucía, Uruguay)

Cited by 45 publications

References 29 publications

Effects of local, river-network and catchment factors on fish assemblages in the headwater streams of the Xin'an basin, China

Effects of local, river-network and catchment factors on fish assemblages in the headwater streams of the Xin'an basin, China

Differences in stream fish assemblages subjected to different levels of anthropogenic pressure in the Taizi River catchment, China

Spatial and seasonal dynamics of fish assemblage along river Soan, Pakistan and its relationship with environmental conditions

Contact Info

Product

Resources

About