eprintid: 49520 rev_number: 15 eprint_status: archive userid: 1903 dir: disk0/00/04/95/20 datestamp: 2018-03-15 09:23:54 lastmod: 2022-11-30 09:00:00 status_changed: 2018-03-15 09:23:54 type: article metadata_visibility: show creators_name: Ramón Contento, Pablo Ancelmo creators_name: Cruz Rot, Marcelino de la creators_name: Zavala Morencos, Ignacio de creators_name: Zavala Girones, Miguel Ángel creators_id: marcelino.delacruz@upm,es creators_id: ignacio.zavala.morencos@upm.es title: Factors influencing the dispersion of Arceuthobium oxycedri in Central Spain: evaluation with a new null model for marked point patterrns ispublished: pub subjects: botanica 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. date: 2016-05 date_type: published publisher: Wiley-Blackwell official_url: http://onlinelibrary.wiley.com/doi/10.1111/efp.12279 id_number: 10.1111/efp.12279 full_text_status: public publication: Forest Pathology volume: 46 number: 6 pagerange: 1-12 institution: Agronomica department: Ingenieria_2014 refereed: TRUE issn: 1437-4781 rights: by-nc-nd comprojects_type: MINECO comprojects_type: MINECO comprojects_type: CM comprojects_code: A/030244/10 comprojects_code: CGL2009-13190-C03-02 comprojects_code: S2013/MAE-2719 comprojects_acronym: Islas-Espacio comprojects_acronym: REMEDINAL3-CM comprojects_title: 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 comprojects_title: Restauración y conservación de los ecosistemas mediterráneos: respuesta frente al cambio global citation: 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 . document_url: https://oa.upm.es/49520/1/INVE_MEM_2016_269611.pdf