4 Works

Assessing the genetic diversity in Argopecten nucleus (Bivalvia: Pectinidae), a functional hermaphrodite species with extremely low population density and self-fertilization: effect of null alleles

Judith Barros Gómez, Federico M. Winkler & Luz A. Velasco
Argopecten nucleus is a functional hermaphroditic pectinid species that exhibits self-fertilization, whose natural populations have usually very low densities. In the present study, the genetic diversity of a wild population from Neguanje Bay, Santa Marta (Colombia), was estimated using microsatellite markers, and the effect of the presence of null alleles on this estimation was assessed. A total of 8 microsatellite markers were developed, the first described for this species, and their amplification conditions were standardized....

Data from: Multiple late-Pleistocene colonisation events of the Antarctic pearlwort Colobanthus quitensis (Caryophyllaceae) reveal the recent arrival of native Antarctic vascular flora

E. M. Biersma, C. Torres-Díaz, K. K. Newsham, M. A. Vidal, G. Ballesteros, C. C. Figueroa, W. P. Goodall-Copestake, M.A. Leppe, M. Cuba-Díaz, M. A. Valladares, L. R. Pertierra, P. Convey, I. S. Acuña-Rodríguez, G. A. Collado & M. A. Molina-Montenegro
Aim: Antarctica’s remote and extreme terrestrial environments are inhabited by only two species of native vascular plants. We assessed genetic connectivity amongst Antarctic and South American populations of one of these species, Colobanthus quitensis, to determine its origin and age in Antarctica. Location: Maritime Antarctic, sub-Antarctic islands, South America Taxon: Antarctic pearlwort Colobanthus quitensis (Caryophyllaceae) Methods: Four chloroplast markers and one nuclear marker were sequenced from 270 samples from a latitudinal transect spanning 21–68° S....

The role of island physiography and oceanographic factors in shaping species richness and turnover of nesting seabird assemblages on islands across the southeastern Pacific

Joao B. Gusmao, Guillermo Luna-Jorquera, Claudia Fernández, Nicolás Luna, Paula Plaza, Matías Portflitt_Toro, Juan Serratosa, Pamela Nuñez, Andrea I. Varela & Marcelo Rivadeneira
For seabirds, food supplies and nest sites are largely driven by oceanographic gradients and island habitats, respectively. Research into seabirds’ ecological roles in insular ecosystems is crucial to understanding processes that structure seabird nesting assemblages. We examined the influence of island physiography and oceanographic factors on the spatial variation in α and β-diversity of nesting seabird assemblages. Location Southeastern Pacific Ocean. Taxon Birds Methods We compiled data from 53 seabirds breeding on 41 coastal and...

Plant dispersal strategies of high tropical alpine communities across the Andes

Carolina Tovar, Inga Melcher, Buntarou Kusumoto, Francisco Cuesta, Antoine Cleef, Rosa Isela Meneses, Stephan Halloy, Luis Daniel Llambi, Stephan Beck, Priscilla Muriel, Ricardo Jaramillo, Jorge Jacome & Julieta Carilla
• Dispersal is a key ecological process that influences plant community assembly. Therefore, understanding whether dispersal strategies are associated with climate is of utmost importance, particularly in areas greatly exposed to climate change. We examined alpine plant communities located in the mountain summits of the tropical Andes across a 4000 km latitudinal gradient. We investigated species dispersal strategies and tested their association with climatic conditions and their evolutionary history. • We used dispersal-related traits (dispersal...

Registration Year

  • 2020
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Resource Types

  • Dataset
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Affiliations

  • Catholic University of the North
    4
  • Higher University of San Andrés
    1
  • Centre for Ecology and Hydrology
    1
  • Royal Botanic Gardens
    1
  • British Antarctic Survey
    1
  • University of Talca
    1
  • King Juan Carlos University
    1
  • Instituto Antártico Chileno
    1
  • Universidad de las Américas
    1
  • Universidad de Los Andes
    1