Asociaciones espaciales y temporales de aves acuáticas durante los ciclos de mareas diurnos, en la laguna costera Barra de Navidad, del Pacífico central mexicano

Abstract Hydrological dynamics driven by tidal cycles in estuaries affect waterbird distribution and the availability of their prey. To evaluate the effect of tides on waterbird abundance, distributions, and activity, monthly censuses were conducted from March 2011 to February 2012 (12 at high tide...

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Bibliographic Details
Published in:Revista de biología marina y oceanografía 2022-12, Vol.57 (2), p.89-101
Main Authors: Hernández Vázquez, Salvador, Aguilar Betancourt, Consuelo, Castillo Guerrero, José Alfredo, González Sansón, Gaspar
Format: Article
Language:Spanish
Subjects:
abundance
abundancia
aves
Coastal wetlands
distribución
distribution
Humedal costero
mareas
tides
waterbirds
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Summary:Abstract Hydrological dynamics driven by tidal cycles in estuaries affect waterbird distribution and the availability of their prey. To evaluate the effect of tides on waterbird abundance, distributions, and activity, monthly censuses were conducted from March 2011 to February 2012 (12 at high tide and 12 at low tide) along a transect parallel to the edge of Barra de Navidad lagoon, which contains substrates that are used by migratory and resident birds as feeding and resting sites. The lagoon perimeter was divided into four zones; A, B, C, and D. In total, 52 species were identified with 7,775 records at high tide and 68 species with 16,469 records at low tide. At high tide, seabirds (14 species, 3,590 records) and waders (15 species, 2,075 records) predominated, whereas shorebirds (23 species, 5,975 records) and waders (17 species, 5,458 records) predominated at low tide. The seasonal abundance patterns indicated increases in winter (January to March) for all bird groups except ducks and related species (Podicipedidae and Rallidae), which showed low abundances year-round. The tidal cycle significantly affected wader and shorebird abundance, with greater abundance observed during low tides. The greatest waterbird abundance occurred in the mudflats, primarily in those located in the southeastern portion of the lagoon (zone C), which were mainly used as feeding areas during low tides. The information generated in this study can be used to inform decision-making in urban and tourism projects planned for the lagoon to ensure adequate substrate availability for this waterbird species. Resumen La dinámica hidrológica originada por los ciclos de marea en estuarios causa cambios en la diversidad, distribución y abundancia de las aves y de sus presas. Para evaluar el efecto de las mareas en la abundancia, distribución y actividad en las aves acuáticas se realizaron conteos mensuales a lo largo de un transecto paralelo al margen de la laguna Barra de Navidad, desde marzo 2011 a febrero 2012 (12 en marea alta y 12 en marea baja). El perímetro de la laguna fue dividido en cuatro zonas con la misma longitud; A, B, C y D. En total, se identificaron 52 especies con 7.775 registros en marea alta y 68 especies con 16.469 registros en marea baja. En marea alta predominaron las aves marinas (14 especies y 3.590 registros) y zancudas (15 especies y 2.075 registros), y en marea baja fueron las aves playeras (23 especies, 5.975 registros) y las aves zancudas (17 especies, 5.45
ISSN:0718-1957
0717-3326
DOI:10.22370/rbmo.2022.57.2.3527