Assessing the importance of the riparian zone for stream fish communities in a sugarcane dominated landscape (Piracicaba River Basin, Southeast Brazil)

Santos, Fernanda Bastos dos; Ferreira, Fábio Cop; Esteves, Katharina Eichbaum

doi:10.1007/s10641-015-0406-4

Cited by 39 publications

(33 citation statements)

References 66 publications

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“…Galuch, 2007;Teresa & Casatii, 2010;Cruz et al, 2013;Santos, Ferreira, & Esteves, 2015;Casatti et al, 2015), confirming the initial hypothesis of this study in other regions and ecosystems.…”

Section: Discussionsupporting

confidence: 83%

“…The presence of large amount of submerged litter derived from leaves that fell from the riparian forest resulted in greater number of microhabitats, which ensured greater fish species richness and diversity (Ferreira & Marinelli, 2001). Even so, studies on the effects of riparian vegetation on aquatic communities have stressed the importance of local influence, because riparian buffers help the preservation of mesohabitats and found for forested stream in our study (Lorion & Kennedy 2009;Casatti et al 2012;Casatti et al 2015;Santos et al 2015).…”

Section: Discussionmentioning

confidence: 52%

“…Comparisons made by Santos et al (2015), in streams located in area of native forest (comprised dense ombrophilous forests, lowland vegetation, dense woody vegetation on both banks, with buffer widths of 12-18 m), secondary forest (comprised semi-deciduous and secondary dense ombrophilous vegetation, were located within sugarcane properties showing clear signs of deforestation with a relatively open understory and 6-12 m of riparian buffer zones) and sugarcane (riparian vegetation consisted primarily of Brachiaria type grasses, severe erosion with the presence of gullies), suggested that this component had significant effects on some aspects of the fish assemblages, such as species composition and trophic structure. Although, richness, diversity, biomass and total density were not influenced by riparian condition in Santos et al (2005) study, these parameters of the assemblages were influenced mainly by the dry and rainy periods (seasonality).…”

Section: Discussionmentioning

confidence: 99%

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The influence of habitat structure on fish assemblages in Amazonian streams of Machado river basin

Costa

Rocha

2016

RBT

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Abstract:Igarapés are Amazonian streams that are extremely susceptible to environmental changes. Due to the rapidly occurring riparian land use changes, and the several impacts these may have on fish assemblages, it is highly valuable to describe and understand the current relationships between these assemblages and the local environmental conditions, especially in barely know areas. In this research, we studied the taxonomic composition and fish assemblage attributes variation in three streams with different riparian conservation conditions: forest, intermediate and pasture. Samplings were performed every two months from October 2011 to September 2012, in three 1 st order streams in the Machado River Basin, Rondônia. Fish were collected using trawls (seine net with a mesh size of 2 mm) and dip nets (2 mm mesh) along the entire stretch; the obtained samples were preserved and identified per site type. A total of 2 141 fish specimens belonging to 59 species, 17 families and five orders were recorded. Unlike the intermediate and pasture streams, the forest stream showed a high richness and low abundance. The forested stream exhibited the highest diversity and evenness value, and had low dominance, unlike the other streams. The variance partitioning and partial Redundancy Analysis (pRDA) indicated that assemblage composition was significantly explained by the environmental variables such as: depth, water velocity, pteridophytes and grasses, but not by spatial predictors. The non-metric multidimensional scaling (NMDS) analysis showed that intermediate and pasture streams separated from the forested stream. We concluded that both, the stream environmental variables and fish assemblage attributes were influenced by the different conservation status and land cover. Given the influence of regional processes, which have a pervasive role in local fish assemblages, land use at the watershed scale is important, especially to explain the higher richness and diversity found in forested streams. Rev. Biol. Trop. 65 (1): 103-115. Epub 2017 March 01.Key words: complexity, conservation, richness, fish assemblages.Tropical rainforest streams are nutrientpoor streams with a dense forest cover that prevents light from reaching the water surface (Walker, 1995). Their biological and physicochemical features are therefore greatly influenced by the surrounding vegetation (Mendonça, Magnusson, & Zuanon, 2005). They are also considered to be extremely vulnerable to environmental impacts, such as land-use change by agricultural purposes, which may cause environmental degradation (Dembkowski & Miranda, 2012) and influence aquatic vertebrate fauna (Miserendino et al., 2011).Physicochemical habitat characteristics are considered to be highly relevant factors affecting the distribution of species and the organization of communities in streams (Hoeinghaus, Winemiller, & Birnbaum, 2007). Variations in species composition, structure and distribution in fish assemblages has been attributed to area (i.e. basin area, lake surface area), regional net...

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 99%

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The influence of habitat structure on fish assemblages in Amazonian streams of Machado river basin

Costa

Rocha

2016

RBT

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“…In tropical streams, although studies about scale-related effects are still scarce, the findings are similar to those of temperate environments. For example, in tropical agricultural landscapes both catchment-and local-scale features affected both functional and taxonomic diversity of stream fish communities (Cruz et al 2013;Bordignon et al 2015;Santos et al 2015; but see Casatti et al 2015). However, it should be mentioned that although catchment variables are important (Roth et al 1996), in most cases local-scale variables accounted for the most variation in fish community structure (Lammert & Allan 1999;Wang et al 2003;Diana et al 2006;Johnson et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Although there is a substantial number of studies that address this issue (Lammert & Allan 1999;Diana et al 2006;Johnson et al 2007;Cianfrani et al 2012), including in tropical streams (Cruz et al 2013;Casatti et al 2015;Santos et al 2015), the relative importance of catchment-versus local-scale factors for stream biota has remained elusive (Roth et al 1996;Cianfrani et al 2012). Studies addressing the issue are necessary because the assessment of catchment-stream relationships using a hierarchical classification can aid in conservation, restoration, and management of freshwater systems (Frissell et al 1986;Cianfrani et al 2012;Feld 2013;Dembkowski & Miranda 2014) and provides a more efficient and holistic view of these (Dembkowski & Miranda 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of environmental features at multiple scales and spatial structure on stream fish communities in a tropical agricultural region

Roa‐Fuentes

Casatti

2017

Journal of Freshwater Ecology

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Land cover change for agricultural expansion exerts strong pressures on tropical streams. We examined the relative contributions of catchment land cover, local environmental features, and spatial patterns on stream fish communities (n D 43). Explained variation in fish community structure was partitioned (p-RDA) between the explained fractions as follows: pure local 10%, pure catchment 1%, pure spatial 3%, and shared environmental and spatial 7%. Among the possible reasons for the lack of effect of catchment-scale variables on stream fish structure we can cite (1) weak associations between catchment-scale and local-scale features that are affecting stream fish communities, (2) major influence of past land cover on the present-day fish community structure compared to current land cover, or (3) the small variability in catchment variables (e.g. homogeneous landscape) is not able to overcome the impact of localscale variables. The best practice to improve the ecological integrity of streams would be the restoration at the catchment-scale, which is impossible for agricultural lands. In areas with intense land use for agriculture and pasture, our study indicates that restoration of riparian forests and manipulation of local conditions may be an option to reduce the impacts of anthropogenic activities on the stream fish communities.

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The effect of planting grass filter strips on fishes in agricultural headwater streams

Smiley

2024

Aquatic Conservation

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Grass filter strips (i.e., herbaceous riparian buffers) are a widely used conservation practice in the United States to mitigate the impacts of agriculture on streams and rivers. Yet, only a limited amount of information is available on the effects of grass filter strips on stream fishes and instream habitat conditions and long‐term assessments are rare. The objective of this research was to document the long‐term effects of planting grass filter strips adjacent to channelized agricultural headwater streams on fish community structure and instream habitat. Fishes, instream habitat and riparian characteristics were sampled from three channelized agricultural headwater streams without grass filter strips, three channelized agricultural headwater streams with grass filter strips and two unchannelized streams having forested riparian habitats in central Ohio from spring of 2006 to autumn of 2015. Fish species richness, abundance, darter species richness, per cent darters, sunfish species richness, minnow species richness and per cent headwater fishes did not differ among riparian habitat types. Darter species richness and per cent darters differed annually. Mean water depth, velocity, wetted width, instream habitat diversity, dominant grain size and per cent instream wood did not differ among riparian habitat types. Mean water depth, water velocity, wetted width and instream habitat diversity exhibited annual differences. Additionally, mean riparian width, woody vegetation density and per cent canopy cover were greater in forested streams than the unplanted and grass filter strip streams. Riparian characteristics did not differ annually. The lack of fish community responses 10–13 years after planting grass filter strips is probably due to the lack of corresponding changes in hydrological characteristics, substrate and instream wood amounts. These results suggest that grass filter strips should not be implemented alone but in conjunction with conservation practices that will improve physical habitat quality and water quality.

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Assessing the importance of the riparian zone for stream fish communities in a sugarcane dominated landscape (Piracicaba River Basin, Southeast Brazil)

Cited by 39 publications

References 66 publications

The influence of habitat structure on fish assemblages in Amazonian streams of Machado river basin

The influence of habitat structure on fish assemblages in Amazonian streams of Machado river basin

Influence of environmental features at multiple scales and spatial structure on stream fish communities in a tropical agricultural region

The effect of planting grass filter strips on fishes in agricultural headwater streams

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