Factors influencing the dispersion of Arceuthobium oxycedri in Central Spain: evaluation with a new null model for marked point patterrns

Ramón Contento, Pablo Ancelmo and Cruz Rot, Marcelino de la and Zavala Morencos, Ignacio de and Zavala Girones, Miguel Ángel (2016). Factors influencing the dispersion of Arceuthobium oxycedri in Central Spain: evaluation with a new null model for marked point patterrns. "Forest Pathology", v. 46 (n. 6); pp. 1-12. ISSN 1437-4781. https://doi.org/10.1111/efp.12279.

Description

Title: Factors influencing the dispersion of Arceuthobium oxycedri in Central Spain: evaluation with a new null model for marked point patterrns
Author/s:
  • Ramón Contento, Pablo Ancelmo
  • Cruz Rot, Marcelino de la
  • Zavala Morencos, Ignacio de
  • Zavala Girones, Miguel Ángel
Item Type: Article
Título de Revista/Publicación: Forest Pathology
Date: May 2016
ISSN: 1437-4781
Volume: 46
Subjects:
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Ingeniería Agroforestal
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[thumbnail of INVE_MEM_2016_269611.pdf]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (869kB) | Preview

Abstract

The dwarf mistletoe, Arceuthobium oxycedri, is found on populations of Juniperus oxycedrus, in central Spain. This species can have negative effects on the physiology of its host, including mortality. Understanding the mechanisms that control its distribution and dispersal is critical to assessing its potential for spread. We assessed dwarf mistletoe distribution within a population of J. oxycedrus, including infected and uninfected host individuals. A new null model of parasitic dispersion was built using two dispersal kernel forms that were simulated with lower and upper envelopes for second-order functions to summarize a point pattern, such as Ripley?s K, nearest-neighbour distribution and pair correlation functions. Nine dispersal scenarios were constructed with half-bandwidth kernels (10, 20, 30 m) and initial population of infected trees (P0 = 05, 10 and 20). These scenarios were compared with the observed pattern and evaluated using the goodnessof- fit test. Significant differences at short distance (r < 10 m) were found between the observed pattern and simulated patterns, corresponding to the range of seed dispersal of the dwarf mistletoe. Interactions between infected and uninfected hosts patterns at all scales were identified, suggesting that A. oxycedri uses other mechanisms in addition to ballistic seed shooting as secondary dispersal agents to spread to distances greater than 20 m. Given that the seed characteristics facilitate dispersal by adhesion, we infer that spread between host individuals is amplified by seed transport by birds or small mammals.

Funding Projects

Type
Code
Acronym
Leader
Title
Government of Spain
A/030244/10
Unspecified
Unspecified
Desarrollo de estrategias de gestión y conservación de la biodiversidad en el sur del Ecuador: mitigación de los efectos del cambio climático y la deforestación
Government of Spain
CGL2009-13190-C03-02
Islas-Espacio
Unspecified
Unspecified
Madrid Regional Government
S2013/MAE-2719
REMEDINAL3-CM
Unspecified
Restauración y conservación de los ecosistemas mediterráneos: respuesta frente al cambio global

More information

Item ID: 49520
DC Identifier: https://oa.upm.es/49520/
OAI Identifier: oai:oa.upm.es:49520
DOI: 10.1111/efp.12279
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/efp.122...
Deposited by: Memoria Investigacion
Deposited on: 15 Mar 2018 09:23
Last Modified: 30 Nov 2022 09:00
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM