Volcanism rather than climatic oscillations explains the shared phylogeographic patterns among ecologically distinct plant species in the southernmost areas of the South American Arid Diagonal

2020 ◽  
Vol 45 ◽  
pp. 125542
Author(s):  
Matias Cristian Baranzelli ◽  
Andrea Cosacov ◽  
Nicolás Rocamundi ◽  
Eduardo Andrés Issaly ◽  
Dana Lucía Aguilar ◽  
...  
Keyword(s):  
Plant Species ◽  
South American ◽  
The South ◽  
Climatic Oscillations

Biogeographic origins and floristic affinities of the bryophytes of the Tota-Bijagual-Mamapacha complex in the Páramos of Boyacá, Colombia

Phytotaxa ◽  
2020 ◽  
Vol 477 (2) ◽  
pp. 171-193
Author(s):  
JORGE ENRIQUE GIL-NOVOA ◽  
MARÍA E. MORALES-PUENTES ◽  
JORGE D. MERCADO GÓMEZ
Keyword(s):  
Transition Zone ◽  
Plant Species ◽  
Endemic Species ◽  
High Elevation ◽  
Environmental Services ◽  
South American ◽  
The South ◽  
The Andes ◽  
Biogeographic Regionalization ◽  
Surface And Groundwater

Páramos are Neotropical high-elevation isolated ecosystems in the Andes. These areas are inhabited by many distinct plant species, such as bryophytes, which provide environmental services including the storage and regulation of surface and groundwater; however, the diversity and biogeographic affinities of bryophytes are still unknown. We used phytogeographic analysis and biogeographic regionalization approaches to determine the biogeographic origins and floristic affinities of this flora in the Tota-Bijagual-Mamapacha (TBM) páramos complex. We found 219 species of bryophytes, 145 mosses, and 75 liverworts. These species are mainly of Neotropical origin, although we also found relationships with Ethiopian, Nearctic, Australian, Antarctic, Palearctic and Oriental regions. According to Morrone (2014), the TBM is located in the South American Transition Zone, the Páramo province, and the Páramos de la cordillera Oriental biogeographic district. The TBM had important floristic relationships with the South Brazilian subregion and the Magdalena province. We found no endemic species to the TBM complex, but identified several endemic species for the Andean páramos.

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