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Copyright of Sabuco Revista de Estudios Albacetenses is the property of Instituto de Estudios Albacetenses and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Sabuco Revista de Estudios Albacetenses is the property of Instituto de Estudios Albacetenses and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Laguna del Caney in the Municipality of Chinácota, Norte de Santander, Colombia, is a place frequently visited by different species of birds, especially some ducks and herons. It’s due the birds find food and a place to rest and reproduce. However, the community of birds that visit this lagoon is unknown. Thus, both bird diversity and its community structure were determined through a rapid sampling of direct observation. The specific diversity of bird species was obtained, this was 19, which are grouped into 9 orders and 13 families. The most common species was Dendrocygna autumnalis (38%), followed by Jacana jacana (17%) and Columbina talpacoti (10%). In addition, the Shannon diversity was found to be 8.59, and the Simpson diversity was 5.11. Also, for the first time, the duck species Anas andium (3%) is reported in a lagoon located at an altitude of 1000 m.a.s.l. In Colombia. Currently, the factors that may be influenced the behavior of the species are unknown, so this work opens the door to new ecological research on this species of waterfowl. [ABSTRACT FROM AUTHOR]

Copyright of Ornitologia Colombiana is the property of Asociacion Colombiana de Ornitologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Sabuco Revista de Estudios Albacetenses is the property of Instituto de Estudios Albacetenses and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Universidad del Valle de Guatemala is the property of Universidad del Valle de Guatemala and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Toxicología is the property of Asociacion Espanola de Toxicologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Iheringia. Série Zoologia is the property of Fundacao Zoobotanica do Rio Grande do Sul and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: The colonies of wading birds reach thousands of highly grouped nests, which have a marked influence on the characteristics of the soil or the water that surrounds them due to a hyperfertilization effect. This causes the harmful accumulation of nitrogen compounds altering the chemistry of the substrate and causing defoliation and death of vegetation. The impact of these colonies on the mangroves in Cuba has not been evaluated, due to the logistical difficulties involved and the complexity of their processes. Objective: Mathematical modeling is a useful tool in these situations, so in this work the estimation of the quantities of biomass, energy and nutrients mobilized in a colony of herons was carried out, through a bioenergetic model of system dynamics. Methods: We used 29 primary variables, 3 bioenergetic equations and the postnatal growth equation of this species, implemented in the STELLA 9.1.3 program. From the interaction of these variables, the energy required by the reproduction cycle, the biomass consumed and the nutrients deposited in the colony were obtained. A sensitivity analysis and an uncertainty analysis were carried out to explore the variables that have the most influence on the results. The model was validated by the consistency in the units, the test of extreme values and the comparison with values recorded in the literature. Finally, disturbances scenarios that can affect a real colony were simulated. Results: According to the model, each nestling require 10 219.2 kcal to growth. The colony must totally invest 6.71x106 kcal, which represents consumption close to 2.2 tons of dams. Due to this consumption, the nutrients deposited in the colony by the excreta were 49 kg of nitrogen, 7 kg of phosphorus and 56 kg of calcium. According to the sensitivity analysis, the variables that produce the strongest changes in the result are the number of adults in the colony and the average clutch size. The uncertainty analysis showed little influence of the variables selected on the response variables. The most harmful simulated disturbances for the colony were the affectations to the recruitment and the increase of the mortality of the nestlings. [ABSTRACT FROM AUTHOR]

The purpose of this investigation was to carry out the first inventory of helminths collected from waterfowl (n=52) of the family Anatidae. This work took place in wetland Atlangatepec, Tlaxcala. Helminths were collected from the digestive tract and the respiratory system of waterfowl donated by hunters. Collected parasites were processed using conventional fixation and staining techniques for the identification of helminth. Twenty-one taxa of helminth swere identified as follow: seven trematodes (Cotylurus cornutus, Australapatemon burti, Zygocotyle lunata, Notocotylus seineti, Typhlocoelum sisowi, Echinostoma sp. and Echinoparyphium recurvatum), four cestodes (Hymenolepis sp, Cloacotaenia megalops, Choanotaenia infundibulum and Fimbriaria fasciolaris), eight nematodes (Amidostomum sp., Streptocara sp., Epomidiostomum uncinatum, Syphaciella sp., Capillaria sp., Tetrameres fissispina, Tetrameres sp. and Echinuria uncinata) and two Acanthocephala (Pseudocorynosoma constritum and Polimorphus sp.). It is relevant to highlight that this is the first report of Syphaciella sp. in waterfowl in Mexico. [ABSTRACT FROM AUTHOR]

The lagoon of Zumpango has become an urban wetland with a high degree of alteration that threatens its biodiversity. This lagoon is one of the last ecological relicts of the Basin of Mexico, home to a great variety of wetland birds, including some that breed in the lagoon. In this study we describe some aspects of the breeding biology of birds from the family Anatidae that reproduce in the lagoon of Zumpango. We registered five species that breed there: the Fulvous Whistling-Duck (Dendrocygna bicolor) the Mallard (Anas platyrhynchos diazi), the Cinnamon Teal (Anas cyanoptera), the Ruddy Duck (Oxyura jamaicensis) and also one species that was considered before as a winter visitor: the Gadwall (Anas strepera). The breeding season in 2015 started in February and endend in September. We describe the nesting substrate, clutch size for three of the species and hatching success for one. The main causes of reproductive failure were nest abandonment, the loss of clutch and egg infertility. We also report for the first time cooperative breeding in the Ruddy Duck. The lagoon of Zumpango is a fundamental habitat for the reproduction of wetland birds like ducks, whose nesting success is affected as a result of the continiuous habitat transformation and perturbation. It is necessary to implement actions that reduce bird and nest disturbance during the breeding season, as well as to maintain nesting sites. [ABSTRACT FROM AUTHOR]

Copyright of Zeledonia is the property of Asociacion Ornitologica de Costa Rica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Toxicología is the property of Asociacion Espanola de Toxicologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

We recorded the presence and abundance of birds, as well as the habitat and breeding temporality of species at Pajaros, Venados, Lobos, Hermano Norte and Hermano Sur islands, located in Mazatlan bay. We conducted seven surveys between November 2014 and May 2015, plus information collected during May 2004 and 2015 by walking on the study islands. We observed a total of 59 species of birds, of which 15 were breeding species: Dendrocygna autumnalis (Black-bellied Whistling-Duck), Phaethon aethereus (Red-billed Tropicbird), Sula leucogaster (Brown Booby), Pelecanus occidentalis (Brown Pelican), Ardea herodias (Great Blue Heron), Ardea alba (Great Egret), Egretta thula (Snowy Egret), Bubulcus ibis (Cattle Egret), Nycticorax nycticorax (Black-crowned Night-Heron), Nyctanassa violácea (Yellow-crowned Night-Heron), Eudocimus albus (White Ibis), Coragyps atratus (Black Vulture), Haematopus palliatus (American Oystercatcher), Larus hermanni (Heermann’s Gull) and Falco peregrinus (Peregrine Falcon). For P. aethereus and S. leucogaster there were not previous reports indicating breeding on these islands; also we confirmed the nesting of L. hermanni. Pájaros Island harbors the largest number of breeding species (10 species). Pelecanus occidentalis was the most abundant species with 1 559 individuals, followed by Fregata magnificens (Magnificent Frigatebird) and Sula nebouxii (Blue-footed Booby) with 1 526 and 1 100 individuals respectively, although for the last two species there were no records of their breeding. These islands are under federal protection, but a monitoring effort is required to know the status and trends of bird populations, and the effects of disturbances by human activities and by introduced species. [ABSTRACT FROM AUTHOR]

Remote sensing is an emerging tool in ecology, but of limited use in Neotropical countries. In this study, we tested the relationship between both bird communities and spectral variables in a wetland of Cuba. We determined the composition and structure of the birdlife in three locations in the Gran Humedal del Norte de Ciego de Ávila and its relationship with the spectral variables. We performed 78 transects and determined the relative abundance, richness, Brillouin index, Simpson index, and guilds composition. On a Landsat 7 satellite image, we measured humidity levels, greenery, living bushes diversity, normalized difference water index and ndvi. We performed multivariate analysis to estimate similarity between vegetation classes from community and spectral variables. To test whether there was correlation between variables we performed a Mantel test and a correlation between the values of the first component of both Principal Component Analysis, from the community and spectral variables. We counted 1,298 birds belonging to 73 species, 14 orders and 33 families. Each plant formation had its own combination of spectral indices. The coastal vegetation differed from the rest of the vegetation and other vegetation had overlap. We found no significant relationship between the community and spectral variables. This may be due to a selection of uninformative indices. Still, the method could be efficient as a complement for biodiversity monitoring and valid as a methodological resource for conservation purposes. [ABSTRACT FROM AUTHOR]

The natural value of Zapata Swamp have been highly recognized, especially in relation to bird conservation, but few ornithological papers had been published, and most of them had been anecdotic or restricted to one area. The waterbirds assemblage have never been evaluated for a long period in Las Salinas for example, in spite of it is considered an outstanding birdwaching site. With the current development of ecoturism is important to have baseline information to be able to evaluate their impact and future management measures in the area. We studied the temporal variation in the aquatic bird assemblage in Las Salinas during 2012-2013 (7 months sampled by year) using an 8 km transect where we combined circular plots and transect lines were combined to make the surveys. We found 64 species mostly winter residents (44%). In 2012 we observed 62 species and 58 in the next year. The assemblage was very similar in both years for both indexes, Comunitary Coeficient and Proportional Similarity (S = 0,90). Anas discors, Fulica americana and Phoenicopterus ruber were the most common species during the study (>60 aves/km²). Species richness and abundance had similar variation pattern in both years but with different numerical values. The biggest populations were observed during the winter migration period. There were no differences in the assemblage structure between years (ANOSIM, R =0,019, p = 0,24). The knowledge of the occurrence of the waterbirds species and the stability found between years may contribute to more effective management and conservation measures and give the scientific bases to improve the quality and quantity of the information to be given through the ecotourism services offered in Las Salinas. [ABSTRACT FROM AUTHOR]

Wood Stork (Mycteria americana) is considered a rare and permanent resident bird in Cuba, with few studies on its ecology and particularly on its reproduction. The aim of this paper is the description of reproduction and habitat of wood stork colonies in Cayo Romano and Zapata Swamp, Cuba, in 2015 reproductive season. We describe two colonies, one at Fauna Refuge Correa in Cayo Romano, Camagüey and the other in the Faunal Refuge Las Salinas (Quitasol), in the Zapata Swamp, Matanzas, during February 2015. In Fauna Refuge Correa, 26 nests were found with 48 chicks, averaging 2.67 chicks per nest. These values were lower than those reported in that area in previous years, but higher than those founded in Quitasol colony, where we found only 8 nests and 16 chicks, averaging 2.09 chicks per nest. The mean height and diameter of the nests in Quitasol colony, of 2.3 m and 48 cm respectively, were lower than those observed in Correa (6.74 m and 56 cm), probably due to the smaller size of mangrove trees. Some environmental variables of the area of the colonies were measured, to get a first idea of the species spatial requirements for breeding. Distances from Correa colony to nearest village and road were 18,9 km and 2.00 km, respectively, while for Quitasol colony was lower (5.54 km and 2.72 km respectively). The temperature and average precipitation in the driest quarter were similar for both breeding areas. [ABSTRACT FROM AUTHOR]

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Spanish Journal of Rural Development is the property of Spanish Journal of Rural Development and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Se determinó la composición y abundancia de la avifauna en las islas de barrera del sistema lagunar San Ignacio-Navachiste-Macapule de julio de 2006 a junio de 2007. Se determinó la riqueza específica y abundancia relativa para todo el complejo y para cada isla. La abundancia acumulada fue 55,849 individuos pertenecientes a 71 especies, 54 géneros y 26 familias distribuidas de la siguiente manera: 51% de especies residentes, 5% de especies migratorias de verano, 41% de especies migratorias de invierno y 3% de especies transitorias. Las familias con mayor riqueza específica fueron Laridae (14 especies, 20%), Scolopacidae (12 especies, 17%) y Ardeidae (10 especies, 14%). El grupo de los pelecánidos presentó mayor abundancia acumulada (38,661 individuos, 69%), mientras que el grupo de los anátidos presentó menor abundancia (0.6%). Las especies con mayor abundancia relativa fueron Pelecanus occidentalis (16,355 individuos, 29%), Phalacrocorax auritus (13,209 individuos, 24%) y Fregata magnificens (5,964 individuos, 11%). Las 68 especies restantes representaron sólo el 36% de la abundancia acumulada. Diecinueve especies utilizan las islas para anidación, y los ardeidos representaron el grupo más importante con 12 especies (60%). Las islas Pájaros y San Ignacio son las principales zonas de anidación dentro del complejo insular, siendo Isla Pájaros la de mayor riqueza y abundancia de individuos. El presente estudio resalta la importancia de las islas de barrera del norte de Sinaloa como zonas de anidación de especies migratorias y residentes. [ABSTRACT FROM AUTHOR]

Copyright of Boletin SAO is the property of Sociedad Antioquena de Ornitologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To test the hypothesis that spatial heterogeneity determines waterbird diversity in a coastal wetland, we compared waterbird density, diversity, and species composition among various habitats and landscapes units in Bahía Magdalena-Almejas, Baja California Sur, Mexico. Based on diversity patterns and bird distribution, we assessed the effect of coastal development on the waterbird community structure. To gather information on habitat features and waterbird populations we conducted waterbird censuses in 329 habitat segments along the internal coastline of the study area, from February 2002 to February 2003. We performed non-parametric analyses to test the null hypothesis of no diference on waterbird density, and diversity among landscape units and seasons. The species composition was evaluated using ordination techniques. Waterbird density was higher in winter and autumn in the three lagoons of the study area, particularly in the insular coast, sandy beach and dunes; it was higher in the few segments of antropic sustrate. Diversity was significantly higher in mangrove habitat along the peninsular coast, and in mangrove-dunes association on the insular coast. Although modification of coastal natural habitat and boat transit disturbance had no influence on waterbird density or diversity, the highest richness of waterbirds occurred in well preserved areas. Species composition analysis showed differences between Santo Domingo Channel and Magdalena Bay. Pelagic and mangrove habitat had a species composition difference higher than those associations in other habitats. Such differences in species assemblages by habitat and landscape units suggest that communities are structured according to the range of available natural resources in structurally complex habitats, and that dominant piscivorous waterbird species were favored in this community. [ABSTRACT FROM AUTHOR]

The article presents an inventory of birds species in Birama swamp, the second largest wetland of Cuba and the Caribbean. This inventory was obtained between 1997 and 2005. Aerial surveys were conducted over the all wetland. The localities surveyed include Monte Cabaniguán, Birama lagoon, Las Playas lagoon, Leonero dam and the Carenas key. There were a total of 143 species of birds of 15 orders detected in the area.

Morphological characteristics of the species determine their possibilities of adaptation to the changing conditions of the ecosystems and establish differences in the community through mechanisms of segregation. In this way we evaluated the behavior of the body mass and tarsus length in 1330 specimens living in the rice paddies of Sur del Jíbaro, their densities in the 17 different habitats were calculated as well. Of the 41 species studied, 15 showed significant differences between sexes for the two variables and 24 in one of the two. Body mass showed a broad variability with the majority of the species having values similar or less than 400g. The same effect was found for the body mass and tarsus when the guilds for both sexes in each species were analyzed. The weighted mean for the two variables showed a relative stable behavior in a great part of the rice cycle and pronounced variations were found in the harvest and the surrounding areas. Finally the correlation between the weighted variance of the body mass of the preys living in the microhabitats and the same parameter of the bird community was significant and very high (r= 0.89). [ABSTRACT FROM AUTHOR]

Copyright of FABICIB: Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral is the property of Universidad Nacional del Litoral and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Caribbean Ornithology is the property of Society for the Conservation & Study of Caribbean Birds and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

El Plan de Conservación p ara las Aves Playeras recalca al río Guaviare como potencial p ara el estudio de aves acuáticas. En este sentido se pretendió conocer la abundancia y distribución de las Aves acuáticas en la Cuenca Media y Baja del Rio Guaviare. Se realizaron 12 salidas de campo durante febrero 2013 y enero 2104, p ara un total de 175 horas de observación. Se visitaron seis lagunas lacustres y dos playas de arenas asociadas al Río Guaviare. Se realizaron recorridos en bote al interior de las Lagunas y recorridos a pie en Playas y bosques inundados, utilizando la metodología de punto transepto. Un total de 2112 individuos fueron observados, distribuidos en 59 especies, 50 géneros y 24 familias. La familia más representativa fue Ardeidae con 12 especies registradas, seguido de Threskiornithidae con seis especies, y Anatidae, Scolopacidae, Alcedinidae con cinco especies respectivamente. Vanellus chilensis es la especies con más individuos observados (134), seguido de Egretta caerulea (104), Egretta thula (99), Phaetusa simplex (97), y Sterna superciliaris (88). De las 266 especies de aves acuáticas registradas p ara Colombia, nuestro studio rep o rta el 22% en la Cuenca media y Baja del Rio Guaviare. [ABSTRACT FROM AUTHOR]