Comparison of transient and asymptotic perturbation analyses of three epiphytic orchid species growing in coffee plantations in Mexico: effect on conservation decisions

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Title: Comparison of transient and asymptotic perturbation analyses of three epiphytic orchid species growing in coffee plantations in Mexico: effect on conservation decisions
Authors: Raventós, José | García-González, Alfredo | Riverón-Giró, Frander B. | Damon, Anne
Research Group/s: Gestión de Ecosistemas y de la Biodiversidad (GEB)
Center, Department or Service: Universidad de Alicante. Departamento de Ecología
Keywords: Conservation | Matrix | Population dynamics | Sensitivity analysis | Transfer function
Knowledge Area: Ecología
Issue Date: 20-Mar-2018
Publisher: Taylor & Francis
Citation: Plant Ecology & Diversity. 2018, 11(2): 133-145. doi:10.1080/17550874.2018.1444110
Abstract: Background: Epiphyte removal forms part of routine management in shade coffee plantations. Aims: Assess the current status of three population orchids growing in Mexican shaded coffee plantations and evaluate the effect of perturbing the transient behaviour of different life stages. Methods: We modelled the short-term response of eliminating I) non-reproductive juveniles, or II) reproductive adult plants from coffee bushes, on populations of Oncidium poikilostalix, Lepanthes acuminata and Telipogon helleri (Orchidaceae). First, we calculated the transient dynamics per se and second, we made a perturbation analysis on population inertia. Finally, we made a comparison with a traditional sensitivity analysis. Results: All three species showed different positive asymptotic growth rate: O. poikilostalix (λmax = 1.106), L. acuminata (λmax = 1.209), and T. helleri (λmax = 1.012). The effect of eliminating the major part of the juvenile or adult orchids gave population inertia in relation to steady state, respectively, (+19%, -24%) for O. poikilostalix, (+17%, -28%) for T. helleri and (+57%, -35%) for L. acuminata. Conclusions: Eliminating juveniles or adults affects in different ways the short-term dynamics due to differential impact on size stages that have the non-linear effects associated with important disturbances that currently affect orchids growing in coffee plantations.
Sponsor: The work was supported in part by the National Council for Science and Technology (CONACYT), Mexico.
URI: http://hdl.handle.net/10045/83773
ISSN: 1755-0874 (Print) | 1755-1668 (Online)
DOI: 10.1080/17550874.2018.1444110
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Botanical Society of Scotland and Taylor & Francis
Peer Review: si
Publisher version: https://doi.org/10.1080/17550874.2018.1444110
Appears in Collections:INV - GEB - Artículos de Revistas

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