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Registros recuperados: 46 | |
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GODOI,MAURICIO N.; SOUZA,FRANCO L.; LAPS,RUDI R.; RIBEIRO,DANILO B.. |
ABSTRACT The informations of bird species distribution in different habitats and the structure of their communities are crucial for bird conservation. We tested the differences in composition, richness and abundance of birds in different phytophysiognomies at Bodoquena Mountains, western Brazil, and we demonstrated the variations in richness and abundance of birds between different trophic groups. Sampling was conducted between July 2011 and June 2012 in 200 point counts arranged in the study area. A total of 3350 contacts were obtained belonging to 156 bird species. Woodland savannas, seasonal forests and arboreal savannas had higher bird abundance and richness, while riparian forests, clean pastures and dirty pastures had smaller values of these... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Habitat use; Point counts; Private Reserves; Trophic groups. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100211 |
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Geise,Lena; Astúa,Diego. |
Gracilinanus microtarsus, from the Atlantic Forest and G. agilis, widespread in central Brazil in the Cerrado and in the northeastern Caatinga are two small Neotropical arboreal opossum species not frequently recorded in simpatry. Here we report eight G. agilis specimens from three localities and 17 G. microtarsus, from 10 localities, all in Minas Gerais, Rio de Janeiro and Bahia states. Species proper identification followed diagnostic characters as appearance of dorsum pelage, ocular-mark, ears and tail lengths and size proportion of the posteromedial vacuities in cranium. Chromosomes in metaphases of five specimens were obtained for both species. Our records extend the previous known geographical distribution of G. microtarsus to Chapada Diamantina, in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: South America; Neotropical marsupials; Karyotypes; Habitat use. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000400030 |
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Caldart,Vinícius Matheus; Iop,Samanta; Santos,Tiago Gomes dos; Cechin,Sonia Zanini. |
We record for the first time Crossodactylus schmidti (Anura: Hylodidae) and Proceratophrys avelinoi (Anura: Cycloramphidae) from Rio Grande do Sul State, Brazil, based on individuals captured in an area of Mesophytic Semideciduous Forest, the Parque Estadual do Turvo, located in the northwest region of the state. These records extend the geographical range for both species in about 60 km from the nearest known locality, the Municipality of San Vicente, Misiones, Argentina. We provide a characterization of the calling site used by males of Crossodactylus schmidti, and we also determined the niche breadth of P. avelinoi regarding to the use of water bodies. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Range extension; Calling site; Breeding site; Niche breadth; Habitat use; Parque Estadual do Turvo; Mesophytic Semideciduous Forest. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000300015 |
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Andrade,Maria Jaqueline Monte de; Sales,Raul Fernandes Dantas; Freire,Eliza Maria Xavier. |
Composition, species diversity and resource usage in terms of space and time were evaluated for the lizard community of the Ecological Station of the Seridó (ESEC Seridó), Rio Grande do Norte. An observation area of 150 m × 150 m (2.25 ha) was delimited and surveyed monthly in alternate turns (morning, afternoon and night) for three consecutive days from April to October 2011, covering dry and rainy seasons. Fourteen species belonging to eight families were recorded, being Tropidurus semitaeniatus the most abundant. Seasonality influenced species richness and abundance. Regarding habitat usage, Lygodactylus klugei was the most generalist species, whilePhyllopezus periosus, P. pollicaris and T. semitaeniatus were specialists, showing affinity for rocky... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Activity periods; Habitat use; Microhabitat use; Richness; Seasonality. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300199 |
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GEISE,L.; GOMES,N.; CERQUEIRA,R.. |
From March 1987 to February 1988, Sotalia fluviatilis population size was estimated and behavioral patterns were observed in the Cananéia estuary region, in Southeast Brazil. Field observations were carried out from shore (40, with a mean observation period of 7.76 ± 2.05 hours a day, completing a total of 310.5 hours) and during line transect surveys by boat (55, 10 of them with a mean observation period of 4.44 ± 0.15 hours each and 45 with a mean observation time of 20 minutes, in the totality 64.3 hours). Dolphins occur in this region all year round, most commonly in small groups, with a greater number observed in January 1988, with no seasonal occurrence pattern. Pairs accounted for ca. 30% and calves were seen year round, always accompanied by one or... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sotalia fluviatilis; Habitat use; Population estimation; Behavioral patterns. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000200002 |
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Martínez García, José Antonio. |
Este estudio se desarrolló del invierno 2003-2004 al invierno del 2004-2005 en el Parque Nacional Izta-Popo, Zoquiapan y Anexas, en sitios con presencia de este conejo fueron denominados como Altzomoni (AL), El Pinar (EP), El Arco (EA), y El Papayo (PA) y tuvo como objetivos el estimar la densidad, el uso del hábitat, y evaluación del hábitat y de la dieta. Se estimó el tamaño poblacional, la densidad y la determinación del ámbito hogareño y cambios de éstas, bajo distintos tipos de unidades ambientales a lo largo del año. El uso de hábitat Este se determinó por medio de la selección de comunidades vegetales, porcentaje de cada uno de los componentes de la cobertura del hábitat, además se estableció el efecto de la perturbación del hábitat, ya sea por... |
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Palavras-chave: Romerolagus diazi; Densidad; Uso de hábitat; Perturbación; Dieta; Capacidad nutricional de carga; Density; Habitat use; Perturbation; Diet; Nutritional carrying capacity; Doctorado; Ganadería. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/426 |
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Martínez García, José Antonio. |
Este estudio se desarrolló del invierno 2003-2004 al invierno del 2004-2005 en el Parque Nacional Izta-Popo, Zoquiapan y Anexas, en sitios con presencia de este conejo fueron denominados como Altzomoni (AL), El Pinar (EP), El Arco (EA), y El Papayo (PA) y tuvo como objetivos el estimar la densidad, el uso del hábitat, y evaluación del hábitat y de la dieta. Se estimó el tamaño poblacional, la densidad y la determinación del ámbito hogareño y cambios de éstas, bajo distintos tipos de unidades ambientales a lo largo del año. El uso de hábitat Este se determinó por medio de la selección de comunidades vegetales, porcentaje de cada uno de los componentes de la cobertura del hábitat, además se estableció el efecto de la perturbación del hábitat, ya sea por... |
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Palavras-chave: Romerolagus diazi; Densidad; Uso de hábitat; Perturbación; Dieta; Capacidad nutricional de carga; Density; Habitat use; Perturbation; Diet; Nutritional carrying capacity; Doctorado; Ganadería. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/426 |
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Martínez García, José Antonio. |
Este estudio se desarrolló del invierno 2003-2004 al invierno del 2004-2005 en el Parque Nacional Izta-Popo, Zoquiapan y Anexas, en sitios con presencia de este conejo fueron denominados como Altzomoni (AL), El Pinar (EP), El Arco (EA), y El Papayo (PA) y tuvo como objetivos el estimar la densidad, el uso del hábitat, y evaluación del hábitat y de la dieta. Se estimó el tamaño poblacional, la densidad y la determinación del ámbito hogareño y cambios de éstas, bajo distintos tipos de unidades ambientales a lo largo del año. El uso de hábitat Este se determinó por medio de la selección de comunidades vegetales, porcentaje de cada uno de los componentes de la cobertura del hábitat, además se estableció el efecto de la perturbación del hábitat, ya sea por... |
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Palavras-chave: Romerolagus diazi; Densidad; Uso de hábitat; Perturbación; Dieta; Capacidad nutricional de carga; Density; Habitat use; Perturbation; Diet; Nutritional carrying capacity; Doctorado; Ganadería. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/426 |
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Martínez García, José Antonio. |
Este estudio se desarrolló del invierno 2003-2004 al invierno del 2004-2005 en el Parque Nacional Izta-Popo, Zoquiapan y Anexas, en sitios con presencia de este conejo fueron denominados como Altzomoni (AL), El Pinar (EP), El Arco (EA), y El Papayo (PA) y tuvo como objetivos el estimar la densidad, el uso del hábitat, y evaluación del hábitat y de la dieta. Se estimó el tamaño poblacional, la densidad y la determinación del ámbito hogareño y cambios de éstas, bajo distintos tipos de unidades ambientales a lo largo del año. El uso de hábitat Este se determinó por medio de la selección de comunidades vegetales, porcentaje de cada uno de los componentes de la cobertura del hábitat, además se estableció el efecto de la perturbación del hábitat, ya sea por... |
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Palavras-chave: Romerolagus diazi; Densidad; Uso de hábitat; Perturbación; Dieta; Capacidad nutricional de carga; Density; Habitat use; Perturbation; Diet; Nutritional carrying capacity; Doctorado; Ganadería. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/426 |
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Agostinho,Carlos S.; Marques,Elineide E.; Oliveira,Rafael J. de; Braz,Pollyanna S.. |
The diet and feeding habits of armado catfish, Pterodoras granulosus (Valenciennes, 1821), were studied in the Lajeado Reservoir, Tocantins, Brazil, and the mouth of its tributaries. Stomach contents of 327 specimens were analyzed by the percentage composition and volumetric methods. The feeding of armado on a wide variety of foods, including both animal and plant items, leads to its classification as a euriphagic species with herbivorous tendency. However, it should be noted that armado showed a strong ontogenetic diet shift, with the gradual replacement of detritus and sediment by plant items, especially terrestrial ones. The environmental use pattern of P. granulosus corroborates the ontogenetic shift observed in its diet. Small fish predominated mainly... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding habits; Seasonal shift; Ontogenetic shift; Habitat use. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300012 |
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Galdino,Conrado A. B.; Carvalho Jr.,Ronald R.; Menezes,Mauren A. V. Noronha e; Nascimento,Luciana B.. |
We studied the pattern of habitat use by the tree frog Scinax aff. perereca. Fieldworks were performed from August 1996 to August 1997 at Parque das Mangabeiras, Belo Horizonte, State of Minas Gerais, southeastern Brazil. Calling males were observed in September, October and December 1996, February to April and June 1997. Females were found only in October 1996. Specimens were found perched on vegetation, on the ground or on stones near waterfall. At Parque das Mangabeiras, S. aff. perereca occupied nine types of substrata. The most frequently used substrata were shrubs, stones at the stream edges, and fallen trunks. The pattern of spatial occupation varied among months. Males were found calling in aggregations on the vegetation and spatial niche breadth... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hylidae; Scinax; Habitat use; Atlantic forest; Environment. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000300018 |
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Bauer, Robert Klaus; Fromentin, Jean-marc; Demarcq, Herve; Bonhommeau, Sylvain. |
We investigated the habitat utilization, vertical and horizontal behaviour of Atlantic bluefin tuna Thunnus thynnus (ABFT) in relation to oceanographic conditions in the northwestern Mediterranean Sea, based on 36 pop-up archival tags and different environmental data sets. Tags were deployed on early mature ABFT (127–255 cm) between July and November in 2007-2014, on the shelf area off Marseille, France. The data obtained from these tags provided 1643 daily summaries of ABFT vertical behaviour over 8 years of tag deployment. Based on a hierarchical clustering of this data, we could identify four principle daily vertical behaviour types, representing surface (≦10m) and subsurface (10–100 m) orientation, moderate (50–200 m) and deep (≧200m) diving behaviour.... |
Tipo: Text |
Palavras-chave: Thunnus thynnus; Habitat use; Spike dives; Fronts; Thermal stratification; Archival tags. |
Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00382/49329/49709.pdf |
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Garrigue, C; Derville, S; Bonneville, C; Baker, Cs; Cheeseman, T; Millet, Laurent; Paton, D; Steel, D. |
Humpback whales Megaptera novaeangliae were severely depleted by commercial whaling. Understanding key factors in their recovery is a crucial step for their conservation worldwide. In Oceania, the Chesterfield-Bellona archipelago was a primary whaling site in the 19th century, yet has been left almost unaffected by anthropogenic activities since. We present the results of the first multidisciplinary dedicated surveys in the archipelago assessing humpback whale populations 2 centuries post-whaling. We encountered 57 groups during 24 survey days (2016-2017), among which 35 whales were identified using photographs of natural markings (photo-ID), 38 using genotyping and 22 using both. Humpback whales were sparsely distributed (0.041 whales km-1): most... |
Tipo: Text |
Palavras-chave: Chesterfield-Bellona archipelago; Connectivity; Coral Sea; Habitat use; Humpback whale; Satellite tracking; Sex ratio; Whaling. |
Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00632/74454/74267.pdf |
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Registros recuperados: 46 | |
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