Foods of Blue-Winged Teal in Two Neotropical Wetlands

Botero, Jorge E.; Rusch, Donald H.

doi:10.2307/3809329

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…In the United States, fall migrating and wintering blue‐winged teals consume primarily plant material (Collins et al 2017); however, on their neotropical wintering grounds, the diet appears to be more dependent on the location and cover type in which teals are feeding (Sell 1979, Thompson et al 1992, Botero and Rusch 1994). Winter diet is in stark contrast to their summer diet of primarily animal matter (Swanson et al 1974, Swanson and Meyer 1977, DuBowy 1988).…”

Section: Discussionmentioning

confidence: 99%

Variation in the Diet of Ducks During Spring Migration

et al. 2021

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Because management practices that promote the production of plant foods may differ from management practices that promote the production of aquatic invertebrates, a thorough understanding of the diet is needed to develop management strategies for various stages of the annual cycle for dabbling and diving ducks. Diet of dabbling (tribe Anatini) and diving (tribe Aythyini) ducks during breeding, autumn migration, and winter has been documented. Our goal was to estimate and compare the diet of blue‐winged teal (Spatula discors), gadwall (Mareca strepera), mallard (Anas platyrhyncos), lesser scaup (Aythya affinis), and ring‐necked duck (Aythya collaris) during spring migration in the Mississippi Flyway in the United States and evaluate variation among species. We collected 919 ducks for diet analysis from multiple wetlands at 6 sites across 4 states during the spring migration of 2006 and 2007. We collected ≥10 individuals of each species at each of the 6 study sites except we collected only 1 gadwall at the Scioto River site and 2 lesser scaup at the Cache River site. We detected that the proportion of plant and animal material in foods of each spring migrating duck species was in general intermediate of that found in wintering and breeding birds. Furthermore, the proportion of plant and animal material in the diet of species varied even among closely related species, indicating species are partitioning food sources along a protein‐carbohydrate gradient during spring migration. We recommend that resources for ducks be managed to provide diverse wetlands to support the varied diets of even closely related species. © 2021 The Wildlife Society.

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Section: Discussionmentioning

confidence: 99%

Variation in the Diet of Ducks During Spring Migration

et al. 2021

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“…The coastal lagoons and mangrove forests have supported the development of highly diverse communities of molluscs, crustaceans, fish, birds, reptiles and mammals. Additionally, the eco-region is the most important area along the Caribbean coast of Colombia for resident and migratory waterbirds (Botero and Rusch 1994). Some critically endangered species, such as the manatee (Trichechus manatus) and the American crocodile (Crocodylus acutus), have also been recorded here (PROCIÉNAGA 1995).…”

Section: Study Area: the Ciénaga Grande Of Santa Martamentioning

confidence: 99%

Relationships between hydrological regime and ecosystem services supply in a Caribbean coastal wetland: a social-ecological approach

Vilardy

González

Martín‐López

et al. 2011

Hydrological Sciences Journal

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The Ciénaga Grande of Santa Marta is Colombia's largest coastal wetland and one of the most important in the Caribbean. In this paper we evaluate the complex linkages existing among the social-ecological history, provision of ecosystem services and human well-being as perceived by local stakeholders. The most critical anthropogenic impacts occurred during the last 50 years in the period following the construction of the Ciénaga-Barranquilla highway. The changes to the social-ecological system have severely altered hydrological dynamics, reduced mangrove forest coverage and affected the composition of fisheries, with direct and indirect effects on the ecosystem services provision and on the well-being of the local people. Despite the ambitious restoration programmes put in practice during the last two decades, the social-ecological impacts of large infrastructure developments are visible today. The paper offers insights that can improve environmental decision making and promote adaptive governance in coastal wetlands.Key words artisanal fisheries; ecosystem services; human well-being; hydrological regime; mangroves; social-ecological history Relations entre régime hydrologique et fourniture de services écosystémiques dans une zone humide côtière des Caraïbes: une approche socio-écologique Résumé La grande Ciénaga de Santa Marta en Colombie est la plus grande zone humide côtière et l'une des plus importantes dans les Caraïbes. Dans cet article nous évaluons les liens complexes existant entre l'histoire socio-écologique, la fourniture de services écosystémiques et le bien-être humain tels que perçus par les acteurs locaux. Les impacts anthropiques les plus critiques sont survenus au cours des 50 dernières années, au cours de la période suivant la construction de l'autoroute Ciénaga-Barranquilla. Les changements du système socioécologique ont sérieusement altéré la dynamique hydrologique, réduit la couverture forestière de la mangrove et affecté la composition des stocks de poissons, avec des effets directs et indirects sur la fourniture des services écosystémiques et sur le bien-être de la population locale. Malgré les programmes de restauration ambitieux mis en pratique au cours des deux dernières décennies, les impacts socio-écologiques du développement des grandes infrastructures sont visibles aujourd'hui. L'article propose des idées qui peuvent améliorer la prise de décision en matière d'environnement et promouvoir une gouvernance adaptative dans les zones humides côtières.

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“…Los piches (D. autumnalis) en conjunto con los sargentos (A. phoeniceus), son especies de aves que se alimentan de semillas y otras partes vegetativas de las plantas que se desarrollan en los humedales. Anteriormente en Costa Rica, se analizaron los contenidos esofageales de patos en la región Chorotega y se encontró que la dieta estaba dominada principalmente por semillas de arroz (Botero y Rusch 1994). Así mismo, el sargento puede ser una plaga del grano del arroz en Costa Rica (Stiles y Skutch 1995) y en América del Sur (Blanco et al 2006).…”

Section: Resto De Almidónunclassified

Humedal de Medio Queso: contribución al conocimiento y conservación de las aves acuáticas en arrozales de la zona norte de Costa Rica

2022

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En Costa Rica son escasos los estudios de aves en arrozales comerciales de la región Huetar Norte y menos aún en hábitats con presencia de arroz silvestre. Evaluar el uso de hábitat de las aves en los arrozales silvestres y comerciales de Caño Negro y Medio Queso, para detectar potenciales agentes dispersores de semillas de arroz. Se determinó la riqueza de especies, la abundancia y el comportamiento de las aves que utilizaron los arrozales. También se utilizaron redes de niebla en los arrozales. Se registraron 53 especies de aves. La mayor abundancia fue en los arrozales silvestres (Passeriformes 1431 individuos, Anseriformes 764 individuos y Ciconiiformes 444 individuos). Las especies más abundantes fueron: el tordo sargento (Agelaius phoeniceus), 90 individuos (DE=72.0), el piche (Dendrocygna autumnalis), 50 individuos (DE=59.5) y el cigüeñón (Mycteria americana), >40 individuos (DE=50.2). Destaca la presencia de especies con alto valor en conservación como el avetoro norteño (Botaurus lentiginosus), zanate de laguna (Quiscalus nicaraguensis), el pato real (Cairina moschata), el pato cantil (Heliornis fulica), el jabirú (Jabiru mycteria) y el rascón moteado (Pardirallus maculatus). El mayor uso que mostraron las aves en los arrozales fue alimentación. Dos especies de aves (Sporophila corvina y Leptotila plumbeiceps) presentaron rastros de partes vegetativas de arroz. Es latente la probabilidad de que las aves y en especial las Passeriformes, sean agentes potenciales de dispersión de propágulos de arroz en la región Huetar Norte de Costa Rica.

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Foods of Blue-Winged Teal in Two Neotropical Wetlands

Cited by 11 publications

References 14 publications

Variation in the Diet of Ducks During Spring Migration

Variation in the Diet of Ducks During Spring Migration

Relationships between hydrological regime and ecosystem services supply in a Caribbean coastal wetland: a social-ecological approach

Humedal de Medio Queso: contribución al conocimiento y conservación de las aves acuáticas en arrozales de la zona norte de Costa Rica

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