Four new endemic species of Nolana (Solanaceae-Nolaneae) from Arequipa, Peru

Silvestre, Víctor Quipuscoa; Dillon, Michael O.

doi:10.22497/arnaldoa.252.25201

Cited by 2 publications

(3 citation statements)

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“…In these areas of highly seasonal fog, oases develop, the so-called "loma vegetation" (loma-Spanish: "hill" ;Ferreyra, 1961;Rundel et al, 1991). This loma vegetation and its typical flora have been extensively studied and documented in the past (e.g., Ferreyra, 1961;Dillon, 2005;Schulz et al, 2011;Muenchow et al, 2013), but taxonomic novelties keep being discovered even in this relatively well studied ecosystem (e.g., Hepp, 2018;Quipuscoa Silvestre and Dillon, 2018;Cáceres de Baldárrago et al, 2019). A recent study employing remote sensing mapped these fog oases with unprecedented precision, arguing that the spatial extent of fog oases is roughly four times as large as previously reported (Moat et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Unlike the loma vegetation of the coast, this precordillera vegetation has been rarely studied and we are not aware of any comprehensive treatment. As our knowledge of this vegetation zone gradually increases, new records are being made and species new to science keep being discovered and described (e.g., Montesinos-Tubée et al, 2016;Quipuscoa Silvestre and Dillon, 2018;Montesinos-Tubée and Chicalla-Rios, 2021). At present, the floristics of the precordillera remains dramatically understudied and no comprehensive overview on the phytodiversity has been provided, neither for the entire Pacific coastal desert nor for either of the two countries.…”

Section: Introductionmentioning

confidence: 99%

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Two Sides of the Same Desert: Floristic Connectivity and Isolation Along the Hyperarid Coast and Precordillera in Peru and Chile

et al. 2022

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In this study we aim at refining our understanding of the floristic connectivity of the loma- and precordillera floras of southern Peru and northern Chile and the parameters determining vegetation cover in this region. We used multivariate analyses to test for floristic- and environmental similarity across 53 precordillera and loma locations in Peru and Chile. We propose the use of predictive modeling in estimating the extent of desert vegetation as a complementary method to remote sensing. We created habitat suitability models for the vegetation on the coast and in the precordillera based on a combination of latent bioclimatic variables and additional environmental predictors using Maxent. We found Peruvian and Chilean lomas to be strongly floristically differentiated, as are the Chilean precordillera and lomas. Conversely, there is clear connectivity between both the Peruvian loma- and precordillera floras on the one hand and the Peruvian and Chilean precordillera floras on the other. Divergent environmental conditions were retrieved as separating the precordillera and lomas, while environmental conditions are not differentiated between Peruvian and Chilean lomas. Peruvian and Chilean precordilleras show a gradual change in environmental conditions. Habitat suitability models of vegetation cover retrieve a gap for the loma vegetation along the coast between Peru and Chile, while a continuous belt of suitable habitats is retrieved along the Andean precordillera. Unsuitable habitat for loma vegetation north and south of the Chilean and Peruvian border likely represents an ecogeographic barrier responsible for the floristic divergence of Chilean and Peruvian lomas. Conversely, environmental parameters change continuously along the precordilleras, explaining the moderate differentiation of the corresponding floras. Our results underscore the idea of the desert core acting as an ecogeographic barrier separating the coast from the precordillera in Chile, while it has a more limited isolating function in Peru. We also find extensive potentially suitable habitats for both loma- and precordillera vegetation so far undetected by methods of remote sensing.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two Sides of the Same Desert: Floristic Connectivity and Isolation Along the Hyperarid Coast and Precordillera in Peru and Chile

et al. 2022

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“…In many modern classifications, members of Nolana have been recognized at familial (Nolanaceae) or subfamilial (Nolanoideae) rank due to their unusual carpel morphology, but data from molecular studies have provided unequivocal evidence that Nolana is nested within the Solanaceae (Dillon et al, 2007b;2009). We have described several new species from Peru (Dillon et al, 2007a;Quipuscoa and Dillon, 2018) and the species described here do not conform to any previously encountered within Nolana (Dillon, 2016).…”

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confidence: 99%