Patterns and processes of global riverine fish endemism

Tedesco, Pablo A.; Leprieur, Fabien; Hugueny, Bernard; Brosse, Sébastien; Dürr, Hans H.; Beauchard, Olivier; Busson, F.; Oberdorff, Thierry

doi:10.1111/j.1466-8238.2011.00749.x

Cited by 80 publications

(110 citation statements)

References 57 publications

(81 reference statements)

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“…A1), maybe reflecting that biogeographical differences and ecological processes (e.g. higher interspecific competition) at local or evolutionary scales lead to increased niche specialisation towards low latitudes, as has been found in several previous studies (Griffiths 2006, Reyjol et al 2007, Mason et al 2008, Tedesco et al 2012, Schleuter et al 2012, Cirtwill et al 2015.…”

Section: Discussionsupporting

confidence: 63%

Size diversity and species diversity relationships in fish assemblages of Western Palearctic lakes

et al. 2017

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Body size, coupled with abundance and taxonomy, may help to understand the mechanisms shaping community structure. Since the body size of fish is closely related to their trophic niche, size diversity (based on individual body size) of fish communities may capture intraspecific variations in fish trophic niches that are not detected by species diversity. Thus, the relationship between size diversity and species diversity may help to integrate variation at both intraspecific and interspecific levels. We studied the relationship between species diversity and size diversity as a measure of the degree of overlap in size among species and thereby the potential overlap in niches in a community. We hypothesized that the relationship between size diversity and species would be different across the European continent due to different levels of size overlap in fish communities. The data were derived from samplings of fish communities using standardised benthic gill nets in 363 lakes. At the continental scale, size diversity increased with species diversity; at the ecoregion scale, the slope of the relation changed across the continent, with the greatest mismatch occurring in northern Europe where communities comprised only one or a few species, but each of which exhibited a great range in size. There was an increase in slope towards the south with significant relations for four out of six ecoregions. The steeper size diversity‐species diversity slope at lower latitudes is attributable to a lower overlap in fish size and thus likely to finer niche separation. Our results also suggest that size diversity is not a strong surrogate for species diversity in European lake fish communities. Thus, particularly in fish communities composed of few species, measuring size diversity may help to detect potential functional variation which may be neglected by measuring species diversity alone.

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Section: Discussionsupporting

confidence: 63%

Size diversity and species diversity relationships in fish assemblages of Western Palearctic lakes

et al. 2017

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“…High levels of neoendemism (endemism originating from speciation within a single drainage basin, sensu Tedesco et al. 2012) are promoted by isolation (Oberdorff et al. 1999; Fu et al.…”

Section: Discussionmentioning

confidence: 99%

“…2004; Tedesco et al. 2012). In fact, the northern Andes have the highest levels of fish endemism in their headwater streams (Maldonado-Ocampo et al.…”

Section: Discussionmentioning

confidence: 99%

Variation in freshwater fish assemblages along a regional elevation gradient in the northern Andes, Colombia

Carvajal‐Quintero

Escobar

Alvarado

et al. 2015

Ecology and Evolution

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Studies on elevation diversity gradients have covered a large number of taxa and regions throughout the world; however, studies of freshwater fish are scarce and restricted to examining their changes along a specific gradient. These studies have reported a monotonic decrease in species richness with increasing elevation, but ignore the high taxonomic differentiation of each headwater assemblage that may generate high β-diversity among them. Here, we analyzed how fish assemblages vary with elevation among regional elevation bands, and how these changes are related to four environmental clines and to changes in the distribution, habitat use, and the morphology of fish species. Using a standardized field sampling technique, we assessed three different diversity and two structural assemblage measures across six regional elevation bands located in the northern Andes (Colombia). Each species was assigned to a functional group based on its body shape, habitat use, morphological, and/or behavioral adaptations. Additionally, at each sampling site, we measured four environmental variables. Our analyses showed: (1) After a monotonic decrease in species richness, we detected an increase in richness in the upper part of the gradient; (2) diversity patterns vary depending on the diversity measure used; (3) diversity patterns can be attributed to changes in species distribution and in the richness and proportions of functional groups along the regional elevation gradient; and (4) diversity patterns and changes in functional groups are highly correlated with variations in environmental variables, which also vary with elevation. These results suggest a novel pattern of variation in species richness with elevation: Species richness increases at the headwaters of the northern Andes owing to the cumulative number of endemic species there. This highlights the need for large-scale studies and has important implications for the aquatic conservation of the region.

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“…The significance of the tests was checked using F-tests based on sequential sums of squares from 1000 permutations of the raw data (ns, non-significant, *P < 0.05, ***P < 0.001). that characterizes the Neotropical fish faunas (Hubert and Renno, 2006;Leprieur et al, 2011;Tedesco et al, 2012), and more precisely the high species turnover between the two basins, i.e., Oyapock contains 66 unique species and the Maroni basin 104, while only 138 species are shared between the two basins (Le . The orientation of the river basin also profoundly affected fish assemblage structure as it explained about 28% of the variability between assemblages.…”

Section: Discussionmentioning

confidence: 99%

Determinants of fish assemblage structure in Mount Itoupé mountain streams (French Guiana)

Brosse

Montoya‐Burgos

Grenouillet

et al. 2013

Ann. Limnol. - Int. J. Lim.

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-Fish assemblages inhabiting the mountain streams of the Guiana shield have scarcely been studied. Here we investigated fish assemblages in eight headwater mountain streams of the Mount Itoupe( French Guiana), and tested how local freshwater fish assemblages are shaped by environmental characteristics. We show that Mount Itoupe´streams host uneven species assemblages, characterized by low species richness (less than ten species per site) and a high proportion of small Siluriform species. Differences in fish assemblage composition between the sites were mainly due to basin identity, but regional climate and position of the site in the river gradient also had a significant effect, although of lower magnitude. In contrast, local habitat hardly affected fish richness, abundances or assemblage composition. Species richness increased along the upstream-downstream gradient, whereas fish abundance depended mainly on the slope orientation of Mount Itoupe´. Although these results need confirmation on a larger amount of sampling sites, located on other Guianese mountains, this preliminary study shows that the mountain streams of the Guiana Shield, although rarely investigated, host not only uneven species assemblages, but also present an original combination of environmental determinants shaping fish assemblage structure. Those rare and original ecosystems hence deserve more attention and should be preserved from human disturbances.

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Patterns and processes of global riverine fish endemism

Cited by 80 publications

References 57 publications

Size diversity and species diversity relationships in fish assemblages of Western Palearctic lakes

Size diversity and species diversity relationships in fish assemblages of Western Palearctic lakes

Variation in freshwater fish assemblages along a regional elevation gradient in the northern Andes, Colombia

Determinants of fish assemblage structure in Mount Itoupé mountain streams (French Guiana)

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