A predictive modeling approach to test distributional uniformity of Uruguayan harvestmen (Arachnida: Opiliones)

Simó, Miguel; Guerrero, José Carlos; Giuliani, L.; Castellano, Ismael; Acosta, Luis Eduardo

doi:10.1186/s40555-014-0050-2

Cited by 15 publications

(13 citation statements)

References 31 publications

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“…The same distribution pattern of D. amica , associated with the riparian forests of Uruguay River course, is observed for other recorded species such as Uloborus elongatus, Neotrops sciosciae and Mesabolivar uruguayensis . These findings reinforce the connection role of the river in a biogeographic crossroad (Simó et al 2014). …”

Section: Discussionsupporting

confidence: 84%

“…Subsequently, Gutiérrez et al (2015) identified and delimited the main conservation corridors of Uruguay, establishing them as national connectors to the so-called Uruguay River Valley, based on ecological links at the regional level and trees and birds distribution (Nores et al 2005, Sganga et al 1984). To this evidence should be added others, such as those reported by Simó et al (2014) for harvestmen, in particular the species Discocyrtus prospicuus Holmberg, 1876 that is distributed along the riparian forest corridor along the river, according with a Paranaense influence. The authors conclude that the distribution of the opiliofauna is coincident with the distribution of dendroflora proposed by Grela (2004) with the convergence of Pampean and Paranaense biotas.…”

Section: Discussionmentioning

confidence: 99%

“…Knowledge of connections between environments and the biota exchange is essential for planning the accurate management of natural areas and avoiding habitat fragmentation processes (Evans et al 2013, Kormann et al 2016, MacClintock et al 1977). Studies on connections and interactions between the biota are considered as a crossroad where biogeographical provinces converge (Morrone 2017), creating a mosaic of environments in a relatively small territory (Grela 2004, Simó et al 2014, Simó et al 2015). One of these convergences occurs especially in the riparian forests of the Uruguay River, where the dendroflora presents components of the biogeographic provinces of Chaco and Paranaense Forest (Grela 2004).…”

Section: Introductionmentioning

confidence: 99%

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The spider fauna from Uruguay River islands: understanding its role in a biological corridor

Laborda¹,

de²,

Pérez‐Miles³

et al. 2018

BDJ

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Biological corridors are connections which link habitats in a regional scale, allowing the gene flow between populations. The Uruguay River comprises riverside and insular riparian forests along subtropical to temperate zones passing through different biogeographic provinces. The aim of this study was to characterise the spider fauna from the Uruguay River islands highlighting their connection role for the spider community of riparian forest. Spiders were studied from surveys in a fluvial island of the southern course of the river with nine campaigns being carried out from September 2007 to September 2009. Three complementary collecting methods were used: G-Vac, night hand collecting and pitfall traps. A total of 58 samples were taken in each campaign. A total of 33 families, 145 species/morphospecies and 8 guilds were registered. Theridiidae and space web weavers showed the highest abundance and species richness. Web weavers were predominant in the spider community evidencing the importance of the forest vegetation heterogeneity in spider diversity. Fifteen species have been recorded for the first time for Uruguay. Additional data of previous surveys in the northern islands of the river were analysed and compared. Several species confirm the role of the Uruguay River as a biological corridor from the upper to lower course of the river. The riparian forests from the islands constitute a southernmost intromission of Paranaense biota between Chaco and Pampa regions along the river. The results obtained are an important input for the conservation of these areas. Knowing the biodiversity, as well as its dynamics and the flow of biota that exists in these environments, would allow planning the management from a regional point of view.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

Laborda¹,

de²,

Pérez‐Miles³

et al. 2018

BDJ

Self Cite

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“…Despite the similarities mentioned above, the area encompasses significant climatic and biophysical heterogeneity (Paruelo et al ., ; Vega et al ., ), non‐uniform history (Ab'Saber, ; Donato et al ., ), unsuspected diversity (Fidelis, ; Guido & López Mársico, ) and contradictory affinities with neighbouring areas (Simó et al ., ). Grela () demonstrated the influence of Paranense Forest in the Uruguayan dendroflora.…”

Section: Introductionmentioning

confidence: 97%

On the position of Uruguay in the South American biogeographical puzzle: insights from Ephemeroptera (Insecta)

Santos

Emmerich

Molineri

et al. 2015

Journal of Biogeography

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Aim To study the relationships between Uruguay and neighbouring geographical areas based on distributions of Ephemeroptera species (mayflies: an ancient order of aquatic insects). We wanted to evaluate whether Uruguay more closely represents (1) the southern limit of the tropical (Paranense and Amazonian) fauna or (2) the northern limit of the temperate (Pampean-Bonaerense) fauna.Location South America with an emphasis on Uruguay.Methods We compiled more than 5000 collection records of mayfly species throughout South America and evaluated these using current taxonomy and geographical validity. We used the Network Analysis Method (NAM) on these data to identify units of co-occurrence (UCs: mutually exclusive groups of codistributed species, with each group connected through strong links of sympatry and disconnected from the others). We focused solely on those UCs that included Uruguay in their spatial ranges and used these to infer the vicinity relationships.Results We recovered four UCs consisting of many species that link Uruguay with tropical areas of Brazil and NE Argentina. These groups followed a geographically nested pattern. The results contradict the previously held view that the Uruguayan fauna holds strong affinities to that of temperate grasslands that lie to the south in central oriental Argentina (i.e. the currently accepted concept of Pampas). A comparison of the genera known from Uruguay and Buenos Aires Province further reinforces the distinction between Uruguay and temperate areas to the south. Main conclusionsThe hypothesis that Uruguay represents the southern limit of tropical affinities is strongly supported by mayfly distributions, indicating that a reappraisal of the Pampas as a cohesive biogeographical province is needed. We suggest that Uruguay and Buenos Aires should belong to different provinces, the former aligned with tropical provinces and the latter aligned with more temperate areas.

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“…Para la región centro-este del país se han reconocido las áreas Mesopotámica y Pampásica. La primera ocupa gran parte de la Mesopotamia argentina, la zona húmeda lindante hasta el flanco oriental de las sierras cordobesas y la vecina República Oriental del Uruguay (Simó et al, 2014). La segunda ocupa el sur y este de la Mesopotamia, regiones adyacentes en Uruguay, sur de Brasil y gran parte de la provincia de Buenos Aires.…”

Section: Introductionunclassified

First record of Pucrolia minuta (Sörensen, 1884) (Opiliones: Gonyleptidae) in Buenos Aires province: a case of recent expansion?

Guerrero¹,

Gaddi²,

Apodaca³

2018

Rev. Soc. Entomol. Arg.

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First record of Pucrolia minuta (Sörensen, 1884) (Opiliones: Gonyleptidae) in Buenos Aires province: a case of recent expansion? ABSTRACT. The Mesopotamian harvestmen are a faunistic set whose distribution coincides with the Argentinean Mesopotamia wetlands and surrounding areas as the Humid Chaco, north Buenos Aires province and eastern Uruguay. Pucrolia minuta (Sörensen, 1884) (Gonyleptidae: Pachylinae) is a Mesopotamian harvestman that lives in highly humid sites and tree dominated physiognomies. In this work, we cite for the first time this species in Buenos Aires province. The new record is located 400 km further south from the previously known collecting sites of the species, in the provinces of Entre Ríos and Santa Fe. The new finding site, in the Pampean plain, is associated to a Eucalyptus sp. (Myrtaceae) tree plantation in a highly modified area by agricultural and livestock activities. Due to its ecological requirements, its limited dispersal abilities and the adverse climatic pulses for its presence that occurred in the Pampean plain between the Pleistocene and the XIX century is improbable that a population of P. minuta had survived during this temporal lapse in the region. Possibly, the species has recently colonized the zone by anthropocory or by its natural dispersal abilities across non-native tree galleries in water courses of north Buenos Aires. KEYWORDS. Anthropocory. Climatic change. Dispersal. Gallery forests. Pampean plain. RESUMEN. Los opiliones mesopotámicos son un conjunto faunístico cuya distribución coincide a grandes rasgos con los humedales de la Mesopotamia Argentina y áreas aledañas como el Chaco Húmedo, el norte de la provincia de Buenos Aires y el este de Uruguay. Pucrolia minuta (Sörensen, 1884) (Gonyleptidae: Pachylinae) es un opilión mesopotámico que habita sitios con alta humedad y fisonomías dominadas por vegetación de porte arbóreo. En este trabajo se cita por primera vez a esta especie en la provincia de Buenos Aires, Argentina. El nuevo registro dista 400 kilómetros al sur de los sitios de colecta más australes conocidos hasta el momento para la especie, en las provincias de Entre Ríos y Santa Fe. La nueva localidad de hallazgo, en la llanura pampeana, se asocia a una arboleda implantada de Eucalyptus sp. (Myrtaceae) en un área fuertemente modificada por actividades agrícolaganaderas. Debido a sus requerimientos ecológicos, a su limitada capacidad de dispersión y a los pulsos climáticos adversos para la presencia de esta especie que acontecieron en la llanura pampeana entre el Pleistoceno y el siglo XIX, es poco probable que hubiera sobrevivido una población de P. minuta en la región durante dicho espacio temporal.

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A predictive modeling approach to test distributional uniformity of Uruguayan harvestmen (Arachnida: Opiliones)

Cited by 15 publications

References 31 publications

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

On the position of Uruguay in the South American biogeographical puzzle: insights from Ephemeroptera (Insecta)

First record of Pucrolia minuta (Sörensen, 1884) (Opiliones: Gonyleptidae) in Buenos Aires province: a case of recent expansion?

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