Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Changes in spatial point patterns of pioneer woody plants across a large tropical landslide
Year:2014
Research Areas
  • Botany,
  • Ecology
Information
Abstract
We assessed whether the relative importance of positive and negative interactions in early successional communities varied across a large landslide on Casita Volcano (Nicaragua). We tested several hypotheses concerning the signatures of these processes in the spatial patterns of woody pioneer plants, as well as those of mortality and recruitment events, in several zones of the landslide differing in substrate stability and fertility, over a period of two years (2001 and 2002). We identified all woody individuals with a diameter >1 cm and mapped them in 28 plots measuring 10 × 10-m. On these maps, we performed a spatial point pattern analysis using univariate and bivariate pair-correlation functions; g (r) and g12 (r), and pairwise differences of univariate and bivariate functions. Spatial signatures of positive and negative interactions among woody plants were more prevalent in the most and least stressful zones of the landslide, respectively. Natural and human-induced disturbances such as the occurrence of fire, removal of newly colonizing plants through erosion and clearcutting of pioneer trees were also identified as potentially important pattern-creating processes. These results are in agreement with the stress-gradient hypothesis, which states that the relative importance of facilitation and competition varies inversely across gradients of abiotic stress. Our findings also indicate that the assembly of early successional plant communities in large heterogeneous landslides might be driven by a much larger array of processes than previously thought.
International
Si
JCR
Si
Title
Acta Oecologica
ISBN
1146-609X
Impact factor JCR
1,84
Impact info
Volume
61
. http://dx.doi.org/10.1016/j.actao.2014.09.001
Journal number
From page
9
To page
18
Month
SIN MES
Ranking
Participants
  • Autor: Eduardo Velázquez (Helmholtz-Zentrum für Umweltforschung)
  • Autor: Marcelino de la Cruz Rot (UPM)
  • Autor: Antonio Gómez-Sal (Universidad de Alcalá)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Biodiversidad y conservación de recursos fitogenéticos
  • Departamento: Biotecnología - Biología Vegetal
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)