Climate, habitat associations and the potential distributions of Neotropical birds: Implications for diversification across the Andes

Cadena, Carlos Daniel; Pedraza, Carlos; Brumfield, Robb T.

doi:10.18257/raccefyn.280

Cited by 38 publications

(44 citation statements)

References 54 publications

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“…In contrast with this predominant view, a recent comparative phylogeographic study found discordant divergence times for multiple avian lineages with cross‐Andean distribution, a result that is better explained by dispersal ability across the Andes rather than a single vicariant event (Smith, Harvey, Faircloth, Glenn, & Brumfield, ; Smith, McCormack et al., ). In line with this finding, new evidence supports the notion that common diversification modes in Neotropical birds include secondary contact between cross‐Andean populations or between divergence in the presence of gene flow, facilitated by low‐elevation corridors along the Andes (Cadena, Pedraza, & Brumfield, ; Oswald, Overcast, Mauck, Andersen, & Smith, ).…”

Section: Introductionsupporting

confidence: 76%

Gene flow and Andean uplift shape the diversification of Gasteracantha cancriformis (Araneae: Araneidae) in Northern South America

Salgado-Roa

Pardo‐Díaz

Lasso

et al. 2018

Ecology and Evolution

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The Andean uplift has played a major role in shaping the current Neotropical biodiversity. However, in arthropods other than butterflies, little is known about how this geographic barrier has impacted species historical diversification. Here, we examined the phylogeography of the widespread color polymorphic spider Gasteracantha cancriformis to evaluate the effect of the northern Andean uplift on its divergence and assess whether its diversification occurred in the presence of gene flow. We inferred phylogenetic relationships and divergence times in G. cancriformis using mitochondrial and nuclear data from 105 individuals in northern South America. Genetic diversity, divergence, and population structure were quantified. We also compared multiple demographic scenarios for this species using a model‐based approach (phrapl) to determine divergence with or without gene flow. At last, we evaluated the association between genetic variation and color polymorphism. Both nuclear and mitochondrial data supported two well‐differentiated clades, which correspond to populations occurring on opposite sides of the Eastern cordillera of the Colombian Andes. The final uplift of this cordillera was identified as the most likely force that shaped the diversification of G. cancriformis in northern South America, resulting in a cis‐ and trans‐Andean phylogeographic structure for the species. We also found shared genetic variation between the cis‐ and trans‐Andean clades, which is better explained by a scenario of historical divergence in the face of gene flow. This has been likely facilitated by the presence of low‐elevation passes across the Eastern Colombian cordillera. Our work constitutes the first example in which the Andean uplift coupled with gene flow influenced the evolutionary history of an arachnid lineage.

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Section: Introductionsupporting

confidence: 76%

Gene flow and Andean uplift shape the diversification of Gasteracantha cancriformis (Araneae: Araneidae) in Northern South America

Salgado-Roa

Pardo‐Díaz

Lasso

et al. 2018

Ecology and Evolution

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“…However, Pleistocene climatic fluctuations may have facilitated the movement of dry forest plant species through Porculla Pass leading to the dispersal of other species, such as birds (Cadena et al . ). Within the Tumbes and the Marañón Valley, taxonomic assemblages show high community turnover (Stotz et al .…”

Section: Introductionmentioning

confidence: 97%

“…Cheviron & Brumfield ; DuBay & Witt ; Cadena et al . ). Distinguishing among these alternative hypotheses is possible by inferring the degree of congruence in diversification pattern and mode.…”

Section: Introductionmentioning

confidence: 97%

“…Currently, this pass sustains mesic montane vegetation (Bridgewater et al 2003) and may serve as a dispersal barrier for aridadapted taxa. However, Pleistocene climatic fluctuations may have facilitated the movement of dry forest plant species through Porculla Pass leading to the dispersal of other species, such as birds (Cadena et al 2016). Within the Tumbes and the Marañ on Valley, taxonomic assemblages show high community turnover (Stotz et al 1996;Pennington et al 2009;Linares-Palomino et al 2010;Oswald et al 2016) and high levels of species endemism, both in the region as a whole and within each subregion (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Isolation with asymmetric gene flow during the nonsynchronous divergence of dry forest birds

et al. 2017

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Dry forest bird communities in South America are often fragmented by intervening mountains and rainforests, generating high local endemism. The historical assembly of dry forest communities likely results from dynamic processes linked to numerous population histories among codistributed species. Nevertheless, species may diversify in the same way through time if landscape and environmental features, or species ecologies, similarly structure populations. Here we tested whether six co-distributed taxon pairs that occur in the dry forests of the Tumbes and Marañón Valley of northwestern South America show concordant patterns and modes of diversification. We employed a genome reduction technique, double-digest restriction site-associated DNA sequencing, and obtained 4407-7186 genomewide SNPs. We estimated demographic history in each taxon pair and inferred that all pairs had the same best-fit demographic model: isolation with asymmetric gene flow from the Tumbes into the Marañón Valley, suggesting a common diversification mode. Overall, we also observed congruence in effective population size (N ) patterns where ancestral N were 2.9-11.0× larger than present-day Marañón Valley populations and 0.3-2.0× larger than Tumbesian populations. Present-day Marañón Valley N was smaller than Tumbes. In contrast, we found simultaneous population isolation due to a single event to be unlikely as taxon pairs diverged over an extended period of time (0.1-2.9 Ma) with multiple nonoverlapping divergence periods. Our results show that even when populations of codistributed species asynchronously diverge, the mode of their differentiation can remain conserved over millions of years. Divergence by allopatric isolation due to barrier formation does not explain the mode of differentiation between these two bird assemblages; rather, migration of individuals occurred before and after geographic isolation.

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“…Schönswetter, Stehlik, Holderegger, & Tribsch, 2005;Wallis, Waters, Upton, & Craw, 2016;Weir, Haddrath, Robertson, Colbourne, & Baker, 2016) versus gene flow and dispersal (e.g. Cadena, Pedraza, & Brumfield, 2016;Knowles & Massatti, 2017;Kolář, Dušková, & Sklenář, 2016;Smith et al, 2014) in driving fast diversification rates (i.e. the 'species-pump' effect, Rull, 2005;Rull & Nogué, 2007;Winkworth, Wagstaff, Glenny, & Lockhart, 2005;Ramírez-Barahona & Eguiarte, 2013;Steinbauer et al, 2016;Flantua & Hooghiemstra, 2018) are still debated.…”

Section: Introductionmentioning

confidence: 99%

The flickering connectivity system of the north Andean páramos

Flantua

O’Dea

Onstein

et al. 2019

Journal of Biogeography

165

149

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Aim To quantify the effect of Pleistocene climate fluctuations on habitat connectivity across páramos in the Northern Andes. Location Northern Andes. Methods The unique páramos habitat underwent dynamic shifts in elevation in response to changing climate conditions during the Pleistocene. The lower boundary of the páramos is defined by the upper forest line, which is known to be highly responsive to temperature. Here, we reconstruct the extent and connectivity of páramos over the last 1 million years (Myr) by reconstructing the upper forest line from the long fossil pollen record of Funza09, Colombia, and applying it to spatial mapping on modern topographies across the Northern Andes for 752 time slices. Data provide an estimate of how often and for how long different elevations were occupied by páramos and estimate their connectivity to provide insights into the role of topography in biogeographical patterns of páramos. Results Our findings show that connectivity amongst páramos of the Northern Andes was highly dynamic, both within and across mountain ranges. Connectivity amongst páramos peaked during extreme glacial periods but intermediate cool stadials and mild interstadials dominated the climate system. These variable degrees of connectivity through time result in what we term the ‘flickering connectivity system’. We provide a visualization (video) to showcase this phenomenon. Patterns of connectivity in the Northern Andes contradict patterns observed in other mountain ranges of differing topographies. Main conclusions Pleistocene climate change was the driver of significant elevational and spatial shifts in páramos causing dynamic changes in habitat connectivity across and within all mountain ranges. Some generalities emerge, including the fact that connectivity was greatest during the most ephemeral of times. However, the timing, duration and degree of connectivity varied substantially among mountain ranges depending on their topographical configuration. The flickering connectivity system of the páramos uncovers the dynamic settings in which evolutionary radiations shaped the most diverse alpine biome on Earth.

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Climate, habitat associations and the potential distributions of Neotropical birds: Implications for diversification across the Andes

Cited by 38 publications

References 54 publications

Gene flow and Andean uplift shape the diversification of Gasteracantha cancriformis (Araneae: Araneidae) in Northern South America

Gene flow and Andean uplift shape the diversification of Gasteracantha cancriformis (Araneae: Araneidae) in Northern South America

Isolation with asymmetric gene flow during the nonsynchronous divergence of dry forest birds

The flickering connectivity system of the north Andean páramos

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