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      Aves en un humedal marino del sur de Chile Translated title: Birds in a marine wetland of southern Chile

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          Abstract

          Este estudio evalúa la influencia del ciclo mareal, la hora del día y la estación climática sobre la diversidad del ensamble de aves presentes en el humedal marino de Bahía Lenca en el Seno de Reloncaví, sur de Chile. Las observaciones del estudio fueron realizadas durante las estaciones de un ciclo anual, primavera 2006, verano, otoño e invierno 2007. Durante todo el periodo de estudio, se registraron 2502 aves pertenecientes a 35 especies y 19 familias. La familia Laridae presentó la mayor riqueza de especies. Tres especies fueron las más relevantes de acuerdo a un índice de importancia relativa para el ensamble de aves observado: Larus dominicanus, Larus maculipennis y Cygnus melancorypha. Durante el verano se registró el mayor número de especies y abundancia de aves. Los valores de diversidad fueron significativamente mayores en los momentos de marea baja, debido al ingreso de aves pertenecientes a los "agroecosistemas" y sistemas de vegetación arbustiva colindantes al humedal marino, como las especies terrestres Milvago chimango, Vanellus chilensis, Theristicus melanopis, Polyborus plancus y aves Passeriformes. Los valores de diversidad obtenidos entre los tres horarios de observación no presentaron diferencias significativas, durante todo el período de estudio. Finalmente fueron identificadas algunas acciones humanas que amenazan la conservación de aves en el Seno de Reloncaví.

          Translated abstract

          This study evaluates the influence of tidal cycle, time-of-day and season on the diversity of a bird assemblage in the marine wetland of Lenca Bay in Reloncaví Sound, southern Chile. The study was carried out during four seasons, spring 2006, summer, fall and winter 2007. During all the study period, it was recorded 2502 birds belonging to 35 species and 19 families. The family Laridae had the highest species richness. Three species were the most relevant according to a relative abundance index for the assemblage of studied birds, Larus dominicanus, Larus maculipennis and Cygnus melancorypha. The highest number of bird species and abundance was recorded during summer. The diversity values were high in low tide, due to the entry of birds belonging to the "agroecosystems" and systems of shrub vegetation adjacent to marine wetland, terrestrial species as Milvago chimango, Vanellus chilensis, Theristicus melanopis, Polyborus plancus and passerine birds. The diversity values obtained between the three daily period of observation shows no significant differences. Finally we identified some human activities that threaten the conservation of birds in Reloncaví Sound.

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          Most cited references66

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          Biostatistical Analysis

          Populations and samples. Measures of central tendency. Measures of dispersion and variability. Testing of goodness of fit. Contingency tables. The normal distribuition. One-sample hypotheses. Two-sample hypotheses; Paired-sample hypotheses. Multisample hypotheses. Multisample hypotheses. The analysis of variance. Multiple comparasion. Two factor analysis of variance. Data transformations. Multiway factorial analysis of variance. Nested (hierarchial) analysis of variance. Simple linear regression. Comparing simple linear regression equations. Simple linear correlation. Polynomial regression. The binomial distribution. The posion distribution and randomness. Circular distributions. Descriptive statistics. Circula4 distribution. Hypotheses testing.
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            Métodos para medir la biodiversidad

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              FORAGING AREA FIDELITY OF INDIVIDUAL SEABIRDS IN RELATION TO TIDAL CYCLES AND FLOCK FEEDING

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                Author and article information

                Journal
                revbiolmar
                Revista de biología marina y oceanografía
                Rev. biol. mar. oceanogr.
                Universidad de Valparaíso. Facultad de Ciencias del Mar (Valparaíso, , Chile )
                0718-1957
                December 2010
                : 45
                : 3
                : 441-450
                Affiliations
                [01] Osorno orgnameUniversidad de Los Lagos orgdiv1Laboratorio de Ecología & Programa IBAM Chile
                Article
                S0718-19572010000300009 S0718-1957(10)04500309
                10.4067/S0718-19572010000300009
                29fdc935-7e24-493b-8570-ec7a28fe9978

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

                History
                : 31 August 2010
                : 11 March 2010
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 46, Pages: 10
                Product

                SciELO Chile

                Categories
                ARTÍCULOS

                conservation,hora del día,Ciclo mareal,conservación,variabilidad estacional,Tidal cycle,time-of-day,seasonal variability

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