Biotic Immigration Events, Speciation, and the Accumulation of Biodiversity in the Fossil Record

Stigall, Alycia L.; Lam, Adriane R.; Wright, David F.; Bauer, Jennifer E.

doi:10.1130/abs/2016am-279835

Cited by 10 publications

(15 citation statements)

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“…A simplicity-based view of the biosphere is countered by considerable empirical observations and the nature of episodic perturbation, dispersal and host/geographical colonization as factors central to diversification, assembly and persistence of intricate faunal mosaics (e.g. Hoberg & Brooks, 2008, 2013; Hoberg et al, 2012; Araujo et al, 2015; Stigall et al ., 2017).…”

Section: Coevolutionary Thinking Contrasts With Complexity Thinkingmentioning

confidence: 99%

“…As a synthesis, the SP is a fundamentally different view of the biosphere that codifies the nature of complexity in faunal assembly and evolution (e.g. Hoberg et al, 2015; Stigall et al ., 2017). SP contrasts with prevailing paradigms that embrace relative simplicity (e.g.…”

Section: Explanations Of Complexity – Stockholm Paradigmmentioning

confidence: 99%

“…In deeper time, oscillation processes must be demonstrated in a coevolutionary and phylogenetic context. In this regard, palaeontology provides a temporal and spatial perspective that may extend to relatively fine scales (Stigall, 2010; Stigall et al ., 2017).…”

Section: Outcomes Of Accelerating Climate Warmingmentioning

confidence: 99%

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Arctic systems in the Quaternary: ecological collision, faunal mosaics and the consequences of a wobbling climate

Hoberg

Cook²,

Agosta

et al. 2017

J. Helminthol.

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Climate oscillations and episodic processes interact with evolution, ecology and biogeography to determine the structure and complex mosaic that is the biosphere. Parasites and parasite-host assemblages are key components in a general explanatory paradigm for global biodiversity. We explore faunal assembly in the context of Quaternary time frames of the past 2.6 million years, a period dominated by episodic shifts in climate. Climate drivers cross a continuum from geological to contemporary timescales and serve to determine the structure and distribution of complex biotas. Cycles within cycles are apparent, with drivers that are layered, multifactorial and complex. These cycles influence the dynamics and duration of shifts in environmental structure on varying temporal and spatial scales. An understanding of the dynamics of high-latitude systems, the history of the Beringian nexus (the intermittent land connection linking Eurasia and North America) and downstream patterns of diversity depend on teasing apart the complexity of biotic assembly and persistence. Although climate oscillations have dominated the Quaternary, contemporary dynamics are driven by tipping points and shifting balances emerging from anthropogenic forces that are disrupting ecological structure. Climate change driven by anthropogenic forcing has supplanted a history of episodic variation and is eliminating ecological barriers and constraints on development and distribution for pathogen transmission. A framework to explore interactions of episodic processes on faunal structure and assembly is the Stockholm Paradigm, which appropriately shifts the focus from cospeciation to complexity and contingency in explanations of diversity.

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Section: Coevolutionary Thinking Contrasts With Complexity Thinkingmentioning

confidence: 99%

Section: Explanations Of Complexity – Stockholm Paradigmmentioning

confidence: 99%

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Arctic systems in the Quaternary: ecological collision, faunal mosaics and the consequences of a wobbling climate

Hoberg

Cook²,

Agosta

et al. 2017

J. Helminthol.

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“…In birds, for instance, the occurrence of nematode parasites increases with the ecological opportunity due to migratory habits and the use of aquatic habitat (Leung and Koprivnikar, 2016; Nylin et al ., 2018). This increase changes the community structure and the formation of new species associations through a combination of mechanisms, such as ecological adaptation and opportunity for interaction between species (Stigall, 2014; Stigall et al ., 2017). In part, the emerging diseases are a result of processes such as those that occur during seasonal floods, in which climate change, travel and global trade generate opportunities for new species associations (Nylin et al ., 2018).…”

Section: Discussionmentioning

confidence: 99%

The role of ecological opportunity in shaping host–parasite networks

et al. 2020

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Despite the great interest to quantify the structure of host–parasite interaction networks, the real influence of some factors such as taxonomy, host body size and ecological opportunity remains poorly understood. In this paper, we investigate the general patterns of organization and structure of interactions in two anuran–parasite networks in the Brazilian Pantanal (seasonally flooded environment) and Atlantic Forest (non-flooded forest). We present theoretical models to test whether the structures of these host–parasite interaction networks are influenced by neutrality, host taxonomy and host body size. Subsequently, we calculated metrics of connectance, nestedness and modularity to characterize the network structure. We demonstrated the structure networks were influenced mainly by body size and taxonomy of the host. Moreover, our results showed that the seasonally flooded environment present networks with higher connectance/nestedness and lower modularity compared to the other environment. The results also suggest that seasonal floods may promote ecological opportunities for new species associations.

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“…Similarly, many studies of diversity curves, origination, and extinction rates of Paleozoic echinoderms have been conducted at the genus level, without the context of evolution (e.g., Nardin and Lefebvre 2010). Interpretation of such patterns of evolution within a phylogenetic framework is important, because biogeographic processes are critical for understanding large-scale patterns in biodiversity and paleoecology through time, particularly through the Middle to Late Ordovician (e.g., Miller 1997; Wright and Stigall 2013; Trubovitz and Stigall 2016; Lamsdell et al 2017; Stigall et al 2017). The Ordovician is a critical time to investigate in order to understand patterns of evolution and dispersal, as two of the largest diversity booms and busts occur within this period: the great Ordovician biodiversification event (GOBE) and the Late Ordovician mass extinction (LOME).…”

Section: Introductionmentioning

confidence: 99%

Estimating dispersal and evolutionary dynamics in diploporan blastozoans (Echinodermata) across the great Ordovician biodiversification event

Lam

Sheffield²,

Matzke³

2020

Paleobiology

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Echinoderms make up a substantial component of Ordovician marine invertebrates, yet their speciation and dispersal history as inferred within a rigorous phylogenetic and statistical framework is lacking. We use biogeographic stochastic mapping (BSM; implemented in the R package BioGeoBEARS) to infer ancestral area relationships and the number and type of dispersal events through the Ordovician for diploporan blastozoans and related species. The BSM analysis was divided into three time slices to analyze how dispersal paths changed before and during the great Ordovician biodiversification event (GOBE) and within the Late Ordovician mass extinction intervals. The best-fit biogeographic model incorporated jump dispersal, indicating this was an important speciation strategy. Reconstructed areas within the phylogeny indicate the first diploporan blastozoans likely originated within Baltica or Gondwana. Dispersal, jump dispersal, and sympatry dominated the BSM inference through the Ordovician, while dispersal paths varied in time. Long-distance dispersal events in the Early Ordovician indicate distance was not a significant predictor of dispersal, whereas increased dispersal events between Baltica and Laurentia are apparent during the GOBE, indicating these areas were important to blastozoan speciation. During the Late Ordovician, there is an increase in dispersal events among all paleocontinents. The drivers of dispersal are attributed to oceanic and epicontinental currents. Speciation events plotted against geochemical data indicate that blastozoans may not have responded to climate cooling events and other geochemical perturbations, but additional data will continue to shed light on the drivers of early Paleozoic blastozoan speciation and dispersal patterns.

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Biotic Immigration Events, Speciation, and the Accumulation of Biodiversity in the Fossil Record

Cited by 10 publications

References 0 publications

Arctic systems in the Quaternary: ecological collision, faunal mosaics and the consequences of a wobbling climate

Arctic systems in the Quaternary: ecological collision, faunal mosaics and the consequences of a wobbling climate

The role of ecological opportunity in shaping host–parasite networks

Estimating dispersal and evolutionary dynamics in diploporan blastozoans (Echinodermata) across the great Ordovician biodiversification event

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