The relative influence of catchment and site variables on fish and macroinvertebrate richness in cerrado biome streams

Macedo, Diego Rodrigues; Hughes, Robert M.; Ligeiro, Raphael; Ferreira, Wanyr Romero; Castro, Miriam A.; Junqueira, Nara Tadini; Oliveira, Deborah; Firmiano, Kele R.; Kaufmann, Philip R.; Pompeu, Paulo Santos; Callisto, Marcos

doi:10.1007/s10980-014-0036-9

Cited by 95 publications

(84 citation statements)

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“…It is well established that the loss of riparian vegetation can be detrimental to several stream characteristics and processes, such as sediment filtration, bank and flow stability, and channel shading with resultant changes in temperature and primary production regulation (Karr and Schlosser 1978;Peterjohn and Correll 1984;Osborne and Koviacic 1993;Sweeney 1993;Nerbonne and Vondracek 2001;Wang et al 2006b;Sály et al 2011;Macedo et al 2014). However the common focus on management priorities within the riparian zone usually implies that the rest of the catchment is completely ignored (Allan et al 1997).…”

Section: The Importance Of Catchment Scale Managementmentioning

confidence: 99%

“…high water temperatures relative to similar elevations at other latitudes, high levels of hydrological periodicity with intense rainfall and runoff, distinct structural features of tropical vegetation) and high natural environmental heterogeneity (Junk and Wantzen 2004;Ortiz-Zayas et al 2005;Boulton et al 2008;Boyero et al 2009). Natural regional differences are reflected in regional instream habitat and biological differences in tropical (Pinto et al 2009;Uriarte et al 2011;Macedo et al 2014) and temperate (Whittier et al 1988;Allan et al 1997;Hughes et al 2006) streams. A major research challenge therefore, is to untangle how rapidly changing disturbance processes interact with high levels of natural environmental heterogeneity to influence the structure and diversity of tropical stream habitats in different regions and over gradients of LUC (Ramírez et al 2008;Boyero et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Multi-scale assessment of human-induced changes to Amazonian instream habitats

et al. 2016

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Context Land use change and forest degradation have myriad effects on tropical ecosystems. Yet their consequences for low-order streams remain very poorly understood, including in the worlds largest freshwater basin, the Amazon. Objectives Determine the degree to which physical and chemical characteristics of the instream habitat of low-order Amazonian streams change in response to past local-and catchment-level anthropogenic disturbances.Methods To do so, we collected field instream habitat (i.e., physical habitat and water quality) and landscape data from 99 stream sites in two eastern Brazilian Amazon regions. We used random forest regression trees to assess the relative importance of different predictor variables in determining changes in instream habitat response variables. Results Multiple drivers, operating at multiple spatial scales, were important in determining changes in the physical habitat and water quality of the sites. Although we found few similarities in modelled relationships between the two regions, we observed non-linear responses of specific instream Ecol (2016) 31:1725-1745 DOI 10.1007 characteristics to landscape change; for example 20 % of catchment deforestation resulted in consistently warmer streams.Conclusions Our results highlight the importance of local riparian and catchment-scale forest cover in shaping instream physical environments, but also underscore the importance of other land use changes and activities, such as road crossings and upstream agriculture intensification. In contrast to the propertyscale focus of the Brazilian Forest code, which governs environmental regulations on private land, our results reinforce the importance of catchment-wide management strategies to protect stream ecosystem integrity.

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Section: The Importance Of Catchment Scale Managementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi-scale assessment of human-induced changes to Amazonian instream habitats

et al. 2016

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“…For French streams, Marzin et al [27] reported that anthropogenic variables at network riparian, catchment, shared site-riparian, or shared site-catchment scales explained more variation than sitescale anthropogenic variables. However, Macedo et al [28] determined that site variables in Brazilian streams explained more variability in fish species richness than did catchment land use variables. For additional reading on landscape-scale effects on fish assemblages, see the books by Hughes et al [29] and Yeakley et al [30].…”

Section: Land Usementioning

confidence: 99%

Recreational fisheries in the USA: economics, management strategies, and ecological threats

Hughes

2014

Fish Sci

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Recreational fishing has a long history in the USA, developing from the subsistence fisheries of Native Americans together with a partial subsistence fishery of later immigrants. Marine, diadromous, and aquatic taxa are targeted, including both vertebrates and macroinvertebrates. This paper defines recreational fishing, describes the main fishing techniques, identifies target taxa by region, summarizes the socio-economic values of recreational fishing, and discusses management strategies and major ecological threats.

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“…Between each transect, we measured thalweg depth and channel slope (with a clinometer). All variables were assessed as described in Peck et al (2006) through use of pre-printed field forms that were widely used in similar studies (Hughes & Peck, 2008;Bryce et al, 2010;Macedo et al, 2014;Leal et al, 2016). From the site variables measured in the field, we calculated 11 physical habitat metrics according to Kaufmann et al (1999) ( Table 1).…”

Section: N T Junqueira D R Macedo R C R Souza R M Hughesmentioning

confidence: 99%

“…Consequently, they cause many environmental changes such as physical habitat loss, sedimentation, bank erosion and bed destabilization, contaminant loadings, canopy opening, and nutrient enrichment (Allan, 2004). Moreover, local habitat conditions are directly or indirectly affected by catchment conditions, including land use changes (e.g., Sály et al, 2011;Marzin et al, 2012;Macedo et al, 2014). Local habitat conditions are a fundamental factor for determining the structure and composition of stream biota (Schlosser, 1982;Rosenzweig, 1995;Harding et al, 1998;Brown et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Influence of environmental variables on stream fish fauna at multiple spatial scales

et al. 2016

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Effects of environmental variables at different spatial scales on freshwater fish assemblages are relatively unexplored in Neotropical ecosystems. However, those influences are important for developing management strategies to conserve fish diversity and water resources. We evaluated the influences of site-(in-stream) and catchment-scale (land use and cover) environmental variables on the abundance and occurrence of fish species in streams of the Upper Araguari River basin through use of variance partitioning with partial CCA. We sampled 38 1 st to 3 rd order stream sites in September 2009. We quantified site variables to calculate 11 physical habitat metrics and mapped catchment land use/cover. Site and catchment variables explained > 50% of the total variation in fish species. Site variables (fish abundance: 25.31%; occurrence: 24.51%) explained slightly more variation in fish species than catchment land use/cover (abundance: 22.69%; occurrence: 18.90%), indicating that factors at both scales are important. Because anthropogenic pressures at site and catchment scales both affect stream fish in the Upper Araguari River basin, both must be considered jointly to apply conservation strategies in an efficient manner.Os efeitos das variáveis ambientais em diferentes escalas espaciais sobre as assembleias de peixes de água doce ainda é um tema pouco explorado na região Neotropical. Entretanto é um assunto de extrema relevância, pois gera subsídios para definições de estratégias de manejo e conservação de ictiofauna e dos recursos hídricos. Nós avaliamos a influência de variáveis ambientais em escalas local (dentro do rio) e da paisagem (uso e cobertura do solo) na abundância e ocorrência das espécies de peixes de riachos da bacia do alto rio Araguari através da partição da variância usando CCA parcial. Um total de 38 riachos de até 3ª ordem foi amostrado em setembro de 2009. Nós quantificamos variáveis locais para calcular 11 métricas de hábitats físicos e mapeamos o uso e cobertura do solo. O conjunto de dados (variáveis locais e da paisagem) explicou mais de 50% da variação total nas espécies de peixes. Variáveis em escala local (abundância: 25,31%; ocorrência: 24,51%) explicaram levemente uma maior variação nas assembleias de peixes do que o uso e cobertura do solo (abundância: 22,69%; ocorrência: 18,90%), indicando que os fatores em ambas as escalas de estudo são importantes. Uma vez que a influência antrópica em diferentes escalas afeta as espécies de peixes em riachos da bacia do alto rio Araguari, ambas devem ser consideradas juntamente para a adoção de estratégias de conservação de uma forma racional. Keywords IntroductionStreams are hierarchically organized and spatially nested systems (Frissell et al., 1986 in which conditions at smaller spatial scales are constrained by processes at larger spatial scales (O'Neill et al., 1989). In other words, site conditions are influenced by regional conditions (Hildrew & Giller, 1994), and different variables may act at different scales (Willis & Whittaker, 2002). Some...

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The relative influence of catchment and site variables on fish and macroinvertebrate richness in cerrado biome streams

Cited by 95 publications

References 75 publications

Multi-scale assessment of human-induced changes to Amazonian instream habitats

Multi-scale assessment of human-induced changes to Amazonian instream habitats

Recreational fisheries in the USA: economics, management strategies, and ecological threats

Influence of environmental variables on stream fish fauna at multiple spatial scales

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