Habitat use and coexistence in two closely related species of Herpsilochmus (Aves: Thamnophilidae)

Costa, Gabriel C.; França, Karol L.; Oliveira-Júnior, Tonny Marques de; Pichorim, Mauro

doi:10.1080/23311843.2016.1264126

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…Another hypothesis is that within the process of community assembly, biotic interactions drive the observed niche breadth (Rosenzweig, ). High species richness, attributable to external and typically regional processes, forces species to specialize, either in their habitat requirements (Costa, França, Oliveira‐Junior, & Pichorim, ; Darmon et al, ; Rosenzweig, ) or in their ecological function (Kronfeld‐Schor & Dayan, ), in order to coexist. Vazquez and Stevens () propose an alternative hypothetical process with a similar causal direction (high species richness leading to high specialization), based on asymmetrical nested interactions between specialists and generalists.…”

Section: Introductionmentioning

confidence: 99%

Niche breadth and species richness: Correlation strength, scale and mechanisms

Granot

Belmaker

2019

Global Ecol Biogeogr

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Aim It is often assumed that species in richer sites are more specialized, but empirical studies show conflicting results. In the present study, we quantify the correlation between community‐level niche breadth and richness. We contrast three mechanisms for gradients in niche breadth: climate, community assembly and nested interactions. First, the climatic stability within the tropics enables species to specialize, resulting in high richness. Under this scenario, we predict stronger richness–niche breadth correlations over larger latitudinal extents and when using environmental niche breadth measures (e.g., habitat). Second, in species‐rich areas, biotic interactions drive species to specialize. This may yield richness–niche breadth correlations regardless of the latitudinal extent and the type of niche breadth measure examined, whether environmental or functional (e.g., diet). Third, increased richness intensifies interactions between extreme specialists and generalists. Here, we predict stronger richness–niche breadth correlations when using functional niche breadth measures. Location Global. Time period 1973–2018. Major taxa studied Many taxa. Methods We conducted a meta‐analysis, with the effect size estimated as the correlation between richness and community‐averaged niche breadth extracted from each study. We also examined how these correlations depend on the niche breadth measure used (environmental or functional), scale (grain and latitudinal extent), ecosystem and taxa. Results We found a strong negative correlation between richness and niche breadth, and overall, a non‐significant correlation between latitude and niche breadth. The richness–niche breadth correlation was independent of the niche breadth measure used (environmental or functional). Scale, ecosystem and taxa had little effect on the strength of the correlation. Main conclusions We confirm that species in richer sites, but not necessarily in the tropics, are more specialized. This finding is not dependent on scale or on the type of niche breadth measure used. These results suggest that high richness drives community‐level specialization, and thus community assembly is likely to be the major driver of niche breadth rather than climatic gradients shaping both niche breadth and richness.

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Section: Introductionmentioning

confidence: 99%

Niche breadth and species richness: Correlation strength, scale and mechanisms

Granot

Belmaker

2019

Global Ecol Biogeogr

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Tree species diversity analysis using species distribution models: A Faidherbia albida parkland case study in Senegal

Ndao

Leroux

Hema³

et al. 2022

Ecological Indicators

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Phylogenomic analyses reveal non-monophyly of the antbird generaHerpsilochmusandSakesphorus(Thamnophilidae), with description of a new genus forHerpsilochmus sellowi

et al. 2021

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The family Thamnophilidae is a species-rich Neotropical radiation of passerine birds. Current classification of its 235 species is mostly based on morphological similarities, but recent studies integrating comprehensive phenotypic and phylogenetic data have redefined taxonomic limits of several taxa. Here, we assess generic relationships of Herpsilochmus, Sakesphorus, Thamnophilus, Biatas, and Dysithamnus using DNA sequences from the mitochondrion, nuclear exons, and ultraconserved elements, with further attention to interspecific relationships within Herpsilochmus. We show that Herpsilochmus and Sakesphorus are not monophyletic. We resolve Herpsilochmus sellowi as a deep-branch sister to the monotypic genus Biatas and Sakesphorus cristatus as sister to a clade comprising Herpsilochmus sensu stricto and Dysithamnus. These results are consistent across loci, obtained via concatenation and coalescent-based analyses, and supported by likelihood-ratio tests of the distribution of our sampled coalescent histories. The phenotypic distinctiveness of both H. sellowi and Biatas argues against merging them into a single genus. Because no generic name is available for H. sellowi, we describe a monotypic genus. The polyphyly of Sakesphorus warrants recognition of the available generic name Sakesphoroides for the distinctive and monotypic S. cristatus. Furthermore, we recover 6 well-supported species groups within Herpsilochmus sensu stricto. Within the context of the family as a whole, the ubiquity of long terminal branches representing monotypic genera points to extinction events among ancestors of these lineages. We suggest that retention of ancestral characters or random genetic drift coupled with extensive extinction could explain the high degree of morphological and ecological similarity across these taxa, but we highlight the potential role of the environment in driving adaptive phenotypic convergence. Finally, our results send a cautionary message against the blind use of phylogenies containing imputed data based on taxonomy due to the increasingly frequent mismatches between traditional taxonomic classification and molecular phylogenies.

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Habitat use and coexistence in two closely related species of Herpsilochmus (Aves: Thamnophilidae)

Cited by 4 publications

References 42 publications

Niche breadth and species richness: Correlation strength, scale and mechanisms

Niche breadth and species richness: Correlation strength, scale and mechanisms

Tree species diversity analysis using species distribution models: A Faidherbia albida parkland case study in Senegal

Phylogenomic analyses reveal non-monophyly of the antbird generaHerpsilochmusandSakesphorus(Thamnophilidae), with description of a new genus forHerpsilochmus sellowi

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