INVESTIGADORES
MARTINEZ PASTUR Guillermo Jose
artículos
Título:
Potential biodiversity map of understory plants for Nothofagus forests in Southern Patagonia: Analyses of landscape, ecological niche and conservation values
Autor/es:
YM ROSAS; PL PERI; MV LENCINAS; G MARTÍNEZ PASTUR
Revista:
THE SCIENCE OF TOTAL ENVIRONMENT
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2019 vol. 682 p. 301 - 309
ISSN:
0048-9697
Resumen:
The role of understory plants in native forests is critical for ecosystemfunction,wildlife protection and ecosystemproductivity. The interest to estimate biodiversity increased during the last decades at landscape level. The objectivewas to elaborate a map of potential biodiversity (MPB) of understory species of Nothofagus forest using potentialhabitat suitability maps (PHS) of 15 plants in Santa Cruz province, Argentina. Additionally, we asked thefollowing questions: (i) Were plant species differentially distributed according to the forest types?, (ii) do foresttypes represent different plant species assemblagewith specific ecological niche requirements?, and (iii) is it possibleto detect hotspots in the MBP according to the forest types?We used 721 plots database of vascular plants,fromwhere 15 indicator specieswere identified. The assemblage species for different forests (Nothofagus antarctica,N. pumilio and evergreen mixed) were analysed using a detrended correspondence analysis. Also, we explored41 potential explanatory variables to develop PHS, and combined these maps to obtain one MPB(1?100%). Finally, we analysed the outputs into a GIS through different landscapes alternatives to detect hotspotareas. Marginality and specialization values allowed identifying species assemblage that presented similar variabilityin the habitat requirements. MPB varied across the landscape, with higher values in the south andlower values near glaciers. MPB had the highest values in N. antarctica forest with N50% cover at landscapelevel. N. antarctica present more hotspots than N. pumilio forests, mainly in the south, compared to mixed