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      Avifauna en monocultivos agroforestales comerciales en Huimanguillo, Tabasco, México Translated title: Avifauna in commercial agroforestry monocultures in Huimanguillo, Tabasco, Mexico

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          Abstract

          Resumen El sureste de México ha sufrido una gran transformación del paisaje, en parte por la presencia de sistemas de aprovechamiento forestal. Describimos comunidades de avifauna en monocultivos de eucalipto y hule en Huimanguillo, Tabasco, y evaluamos la influencia estructural de estos monocultivos en las aves. Se establecieron 118 puntos de conteo de aves (6 réplicas) y parcelas para evaluar la vegetación. En los 708 puntos se observaron 4,699 individuos de 148 especies de aves; la mayor riqueza y abundancia se presentó en eucalipto. El Anosim mostró diferencias significativas entre hule y eucalipto. El Simper indicó que Psilorhinus morio y Eupsittula nana aportaron mayores porcentajes de disimilitud. La estructura de vegetación difirió estadísticamente entre sitios, particularmente las variables arbóreas en plantaciones con respecto a sus matrices circundantes. Los modelos lineales generalizados (GLM) indicaron que la estructura de sotobosque y el tipo de plantación influyen sobre la diversidad de aves. Los monocultivos de eucalipto en Huimanguillo sustentan una comunidad de aves más rica que la del hule. El eucalipto parece formar parte fundamental del hábitat invernal para aves migratorias en esta región. El sotobosque en sistemas agroforestales es un elemento esencial para las aves en paisajes dominados por actividades antrópicas.

          Translated abstract

          Abstract The southeast of Mexico has undergone a great landscape transformation, partly due to the presence of forest harvesting systems. We describe bird communities in eucalyptus and rubber tree monocultures in Huimanguillo, Tabasco, and evaluate the structural influence of these monocultures on bird communities. We sampled 118 bird count points (with 6 replicates) and established vegetation plots for assessment. Across the 708 survey points, 4,699 individuals of 148 bird species were observed. The highest richness and abundance of birds were found in eucalyptus. The ANOSIM showed significant differences between rubber tree and eucalyptus sites. SIMPER analysis indicated that Psilorhinus morio and Eupsittula nana contributed the highest percentages of dissimilarity. The vegetation structure differed statistically between sites, particularly regarding tree variables within plantations compared to their surrounding matrices. Generalized linear models (GLM) indicated that bird diversity is influenced by understory structure and plantation type. In Huimanguillo, eucalyptus monocultures support a richer bird community than the rubber tree one. The eucalyptus seems to play a vital role as a winter habitat for migratory birds in this region. The presence of understory in agroforestry systems is an essential element for birds in landscapes dominated by anthropic activities.

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          Most cited references105

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          Entropy and diversity

          Lou Jost (2006)
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            Principal component analysis

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              Partitioning diversity into independent alpha and beta components.

              Lou Jost (2007)
              Existing general definitions of beta diversity often produce a beta with a hidden dependence on alpha. Such a beta cannot be used to compare regions that differ in alpha diversity. To avoid misinterpretation, existing definitions of alpha and beta must be replaced by a definition that partitions diversity into independent alpha and beta components. Such a unique definition is derived here. When these new alpha and beta components are transformed into their numbers equivalents (effective numbers of elements), Whittaker's multiplicative law (alpha x beta = gamma) is necessarily true for all indices. The new beta gives the effective number of distinct communities. The most popular similarity and overlap measures of ecology (Jaccard, Sorensen, Horn, and Morisita-Horn indices) are monotonic transformations of the new beta diversity. Shannon measures follow deductively from this formalism and do not need to be borrowed from information theory; they are shown to be the only standard diversity measures which can be decomposed into meaningful independent alpha and beta components when community weights are unequal.
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                Author and article information

                Journal
                rmbiodiv
                Revista mexicana de biodiversidad
                Rev. Mex. Biodiv.
                Instituto de Biología (México, DF, Mexico )
                1870-3453
                2007-8706
                2023
                : 94
                : e944913
                Affiliations
                [2] Villahermosa Tabasco orgnameEl Colegio de la Frontera Sur México
                [1] Villahermosa orgnameUniversidad Juárez Autónoma de Tabasco orgdiv1División Académica de Ciencias Biológicas Mexico
                Article
                S1870-34532023000100104 S1870-3453(23)09400000104
                10.22201/ib.20078706e.2023.94.4913
                85cc62a6-a328-40f7-a26d-e308ddb930ff

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 24 August 2023
                : 03 January 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 108, Pages: 0
                Product

                SciELO Mexico

                Categories
                Biogeografía

                Aves,Rubber tree,Plantations,Birds,Hule,Eucalipto,Plantaciones,Eucalyptus

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