Effects of local and regional factors on the fish assemblage structure in Meridional Amazonian streams

Fernandes, Izaías Médice; Lourenço, Luzia S.; Ota, Rafaela P.; Moreira, Milena Mathilde Monaco; Zawadzki, Cláudio Henrique

doi:10.1007/s10641-012-0079-1

Cited by 26 publications

(24 citation statements)

References 36 publications

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“…However, the relative influence of the downstream spatial factors and other environmental variables on fish assemblages may depend on regional and variable settings, that is, the conditions of climate and environments, nature of fish communities and variables of survey. For example, the fish assemblage structure was not affected by the distance from the main river in Meridional Amazonian streams (Fernandes et al, 2013), while which was influenced by distance from the main channel in streams of the Paraíba do Sul basin in southeast Brazil (Pinto et al, 2009). Osborne & Wiley (1992) found a significant relationship between D-link and fish species richness in a central Illinois watershed.…”

Section: Determinants Of Fish Assemblagesmentioning

confidence: 95%

“…However, the variation in physical habitat features through time would not always lead to temporal in fish assemblage composition. For example, the environmental variables differed between high and low flow seasons in coastal rivers of the Andalien drainage as well as Meridional Amazonian streams in the Neotropics, while the fish assemblage compositions did not differ between two seasons (Habit et al, 2007;Fernandes et al, 2013). Spatial variation exceeded temporal variation in fish assemblages in five northwestern Great Plains streams and the Upper Mississippi River System (Mullen et al, 2011).…”

Section: Temporal Variation Of Fish Assemblagesmentioning

confidence: 99%

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Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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The East Asian monsoon and related seasonal rain belts are assumed to be significantly variable at intraseasonal, interannual, and interdecadal time scales, and largely determine the hydrology and ecological processes of the streams and rivers in this region. This study investigated the spatiotemporal variation in fish assemblages and the relative importance of local habitat and regional landscape variables in two protected streams in the middle Yangtze River basin. We hypothesized that the stream fish assemblages in this area are strongly influenced by the monsoon climate, and display a spatiotemporal variation in response to changes of stream flow regimes and physical habitats. The results show that species richness and abundance varied with both season and stream size. The distance to the downstream confluence site was the top important environmental factor, followed by altitude and downstream link. The results suggest that the fish assemblages within this protected watershed are mainly affected by regional landscape variables such as longitudinal position and stream position, but less by local habitat variables including water temperature and habitat types. The study highlights the importance of tributary connectivity and continuity to stream fish diversity in this area, indicating that restoration activities should preferentially recover the connectivity between upstream and downstream.Handling editor: M. Power

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Section: Determinants Of Fish Assemblagesmentioning

confidence: 95%

Section: Temporal Variation Of Fish Assemblagesmentioning

confidence: 99%

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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“…For instance, Geophagus mirabilis were rare in Aripuanã River, whereas Hemiodus bimaculatus and H. sterni were in Juruena River. According to Fernandes et al (2013), differences in species composition between regions can be attributed to the success of each species in the colonization of distinct watersheds (local scale) or due to evolutionary events (regional scale). Considering that Aripuanã and river Juruena belong to different ecoregions, it is likely to presume that events at regional scale can be the primary driver for the differences observed in this study.…”

Section: Discussionmentioning

confidence: 99%

Stream fish from recently deforested basins in the Meridional Amazon, Mato Grosso, Brazil

et al. 2020

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The replacement of tropical forests to production systems is one of the leading causes of riverine ecosystem alterations. However, current assemblages’ composition may also result from the time since these transformations have begun. Therefore, the knowledge of diversified historical scenarios can facilitate the accomplishment of actions that involve the aquatic environments recovery. In this study, an inventory of stream fish was carried out in basins whose deforestation was intensified in the last 20 years, to compose a baseline for ecological and taxonomic studies. The habitat, physical and chemical variables, and the fish assemblages from 60 streams in the northwest region of the state of Mato Grosso, in the Aripuanã and Juruena river basins, were sampled with standardized procedures. For a total of 130 species, a numerical predominance of small-sized Characidae and great rarity were registered, with 50 species represented by less than ten individuals and 19 singletons. Approximately 15% of the sampled taxa were identified only at the generic level, and for several taxa, more detailed taxonomic and molecular studies are required in order to achieve satisfactory identifications. None threatened species were so far reported. On the other hand, two specimens of non-native species were sampled. Although habitat quality is higher in forested streams, no differences in the species richness were registered when compared to the pasture with riparian forest streams or to more deforested streams. However, abundance was greater in these last two streams groups as a result of small-sized characins dominance.

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“…Mean annual rainfall is about 3000 mm (Alvares et al 2013). The soil is predominantly redyellow podzolic and litholic, and the vegetation consists of ombrophilous forest remnants mostly replaced by pasture used for cattle-raising, or gold extraction in the last three decades (Fernandes et al 2013). For sample selection, we considered the order (first, second and third) in the Horton scale modified by Strahler (1957), and the accessibility of each stream based on those with mouths downstream and upstream of the Dardanelos-Andorinhas complex waterfalls (Figure 1).…”

Section: Study Areamentioning

confidence: 99%

“…The ichthyofauna of the Aripuanã River basin is little known, mainly upstream of the Dardanelos-Andorinhas complex with only two studies done so far. The first, made in the middle Madeira and lower portion of Aripuanã River (Rapp Py-Daniel et al 2007) recorded 447 fish species, and the second study, made by Fernandes et al (2013), in downstream and near the Dardanelos-Andorinhas complex falls captured 55 fish species. Accordingly, the present study aimed to describe the ichthyofauna from streams of first, second and third order localized downstream and upstream the Dardanelos-Andorinhas waterfalls complex in the Aripuanã River.…”

Section: Introductionmentioning

confidence: 99%

Stream Fish in the Aripuanã River Upstream and Downstream of the Dardanelos-Andorinhas Waterfall Complex, State of Mato Grosso, Brazil

et al. 2019

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The Aripuanã River basin is part of one of the most biodiverse hydrographic basins on the planet; however, the lack of information on fish diversity in the basin is notable, particularly upstream to the Dardanelos and Andorinhas waterfalls complex. For this study, we sampled 50 m stretches of 71 streams in the Aripuanã River basin, upstream and downstream of the Dardanelos and Andorinhas waterfalls complex. Sampling occurred in the drought period in 2013 and 2014. A total of 11,334 specimens were capture, belonging to five orders, 21 families and 80 species. Among the 80 species, 71 were caught in the downstream and 45 in the upstream region. Overall, there were 36 species in both upstream and downstream samples, 35 exclusive to the downstream segment, and nine were restricted to the upstream region. Despite the low levels of current knowledge, at least 15 endemic fish species could be present in the Aripuanã River basin, and four from these 15 species were sampled in this study. Dardanelos and Andorinhas waterfalls complex are important barriers and we found significant differences in fish assemblage between upstream and downstream regions.

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Effects of local and regional factors on the fish assemblage structure in Meridional Amazonian streams

Cited by 26 publications

References 36 publications

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Stream fish from recently deforested basins in the Meridional Amazon, Mato Grosso, Brazil

Stream Fish in the Aripuanã River Upstream and Downstream of the Dardanelos-Andorinhas Waterfall Complex, State of Mato Grosso, Brazil

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