IBS   24490
INSTITUTO DE BIOLOGIA SUBTROPICAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Understory influence over tree saplings in native Araucaria angustifolia plantations, Argentina.
Autor/es:
PÉREZ FLORES, MAGALÍ; CELLINI, JUAN MANUEL; RITTER, LUIS JAVIER; MEDINA, MICAELA; EICHELBERGER, RENZO ANTONIO; ARTURI, MARCELO FABIÁN; LENCINAS, MARÍA VANESSA; PÉREZ FLORES, MAGALÍ; CELLINI, JUAN MANUEL; RITTER, LUIS JAVIER; MEDINA, MICAELA; EICHELBERGER, RENZO ANTONIO; ARTURI, MARCELO FABIÁN; LENCINAS, MARÍA VANESSA
Lugar:
Cartagena de Indias, D.T. y C.
Reunión:
Congreso; SCB's 28th International Congress for Conservation Biology; 2017
Institución organizadora:
Society for Conservation Biology
Resumen:
Forest plantations with native species are usually valued because their ability to hold species which belong to the original forest ecosystems, depending on its biotic and abiotic ecosystem characteristics (i.e. ground cover). The occurrence of native tree species saplings in plantations could conduce to their transformation into novel or restored ecosystems. The aim of this work was to assess the occurrence of native tree species saplings within plantations with a native species, Araucaria angustifolia, in northeastern Argentina, and correlated them with some plantation characteristics. Likewise, we characterized saplings (up to 0.8 m height) taxonomic and biometrically (root collar diameter-RCD and height). We worked in 75 linear transects 9 m long, evenly distributed in 15 plantations, identifying ground cover of debris-D and life forms (ferns-F, canes-C, Poaceae herbs-PH, non Poaceae herbs-nPH, climbing plants-CP and shrubs-S) by the point-intercept method up to 1.3 m in height. We performed a canonical correspondence analysis (CCA) to assess relations between sapling occurrence and ground covers. We found saplings in 43 of the 75 transects, belonging to 37 tree species, which vary from 0.1 to 1.9 cm in RCD and from 6.9 to 80.0 cm in height. CCA showed occurrence of Ocotea puberula, O. diospyrifolia, Nectandra lanceolata, A. angustifolia, Allophylus edulis, Matayba eleagnoides was more related to CP and nPH; Prunus brasiliensis occurred mostly under C and D; and Guarea macrophylla, Cedrela fissilis and Sorocea bonplandii preferred to growth under S. Occurrence of other species was not clearly related to any variable. The order of influence was D>C>S>T>nPH>CP>F=PH, where axis 1 (Eigenvalue 0.382) explained 36% variance, and axis 2 (Eigenvalue 0.232), 22% variance (58% with both). This information could be used to develop understory management practices to facilitate the installation and growth of native forest species within plantations.