Song Rates, Mating Status, and Territory Size of Cerulean Warblers in Missouri Ozark Riparian Forest

2009 ◽  
Vol 121 (2) ◽  
pp. 283-289 ◽  
Author(s):  
Mark B. Robbins ◽  
Árpád S. Nyári ◽  
Monica Papeş ◽  
Brett W. Benz
Keyword(s):  
Riparian Forest ◽  
Territory Size ◽  
Mating Status ◽  
Cerulean Warblers

scholarly journals Sociality and Foraging Behavior of the Cerulean Warbler in Venezuelan Shade-Coffee Plantations

The Condor ◽  
2000 ◽  
Vol 102 (4) ◽  
pp. 958-962 ◽  
Author(s):  
Jason Jones ◽  
Paolo Ramoni Perazzi ◽  
Erin H. Carruthers ◽  
Raleigh J. Robertson
Keyword(s):  
Foraging Behavior ◽  
Territory Size ◽  
Flock Size ◽  
Adult Males ◽  
Shade Coffee ◽  
Coffee Plantations ◽  
Dendroica Cerulea ◽  
Cerulean Warbler ◽  
Mixed Species Flocks ◽  
Cerulean Warblers

Abstract We examined the use of Venezuelan shade-coffee plantations by the Cerulean Warbler (Dendroica cerulea) and other Neotropical migrants. Cerulean Warblers were commonly observed as pairs in mixed-species flocks. Average (± SE) flock size was 13 ± 2 species with 22 ± 3 individuals. Average flock territory size was 2.5 ± 0.2 ha. No differences were detected in foraging behavior (maneuvers, location, or success) among adult males, adult females, and immature birds. Adult males were often observed visiting flowers of canopy trees. The results of this study indicate that shade coffee plantations may provide suitable wintering habitat for Cerulean Warblers although comparisons with other habitats are needed.

The savannah sparrow territorial system: can habitat features be related to breeding success?

1984 ◽  
Vol 62 (9) ◽  
pp. 1819-1828 ◽  
Author(s):  
Jean Bédard ◽  
Gisèle LaPointe
Keyword(s):  
Breeding Success ◽  
Plant Cover ◽  
Territory Size ◽  
Breeding Performance ◽  
Mating Status ◽  
Passerculus Sandwichensis ◽  
Habitat Features ◽  
Savannah Sparrow ◽  
Territory Holder ◽  
Selection Of

We studied the biology of the savannah sparrow (Passerculus sandwichensis) in a tidal marsh – abandoned fields ecotone at Isle Verte, Québec, from 1976 to 1981 in an attempt to relate habitat features of the territories (size, vegetation structure and height, food abundance, and an index of foraging opportunities) with breeding success (success in attracting a mate and in fledging at least one young). The height of plant cover did not influence the selection of nesting areas by females. The index of foraging opportunities was highly variable and could not be related to the age of the territory holder (yearling or older), his mating status (breeder or bachelor), or to his breeding success (success in fledging at least one young). Territory size was not consistently influenced by these factors. We propose several reasons for the lack of relation between breeding performance and those features of habitat quality that we studied.

EDUCAÇÃO AMBIENTAL COMO SUBSIDIO A (RE)AVALIAÇÃO DAS FORMAS DE USO NA APA DO ESTUÁRIO DO RIO CEARÁ EM FORTALEZA

2019 ◽  
Vol 21 (2) ◽  
pp. 962-975
Author(s):  
Emerson Rodrigues Lima ◽  
Ana Carla Alves Gomes ◽  
Ícaro Paiva de Oliveira ◽  
Maria Lucia Brito da Cruz
Keyword(s):  
Data Collection ◽  
Environmental Education ◽  
Riparian Forest ◽  
Sustainable Use ◽  
Secondary Data ◽  
Field Work ◽  
Protection Area ◽  
Negative Impacts ◽  
Natural Dynamics ◽  
Del Rio

A pesquisa trata de uma análise da relação sociedade natureza no contexto da Área de Proteção Ambiental (APA) do rio Ceará e teve como objetivo principal o estudo dos impactos negativos sofridos a partir dessa interação, descrevendo os principais problemas ocasionados pela ocupação desordenada, como a intervenção nas dunas, poluição do mangue e desmatamento da mata ciliar, os quais condicionam a mudança da dinâmica natural do ambiente causando interferências paisagísticas e biológicas no local. O aporte teórico metodológico embasa-se nas teorias clássicas pertinentes, bem como levantamento de dados secundários, trabalho de campo e a técnica de geoprocessamento para a elaboração de material cartográfico. Os resultados demonstram a urgência em inserir práticas vinculadas a educação ambiental na APA, dessa forma, o trabalho visa servir de subsídio à conscientização da necessidade de preservação deste ambiente, recomendando, assim o diálogo entre a população e os órgãos responsáveis para garantir o uso sustentável da mesma.Palavras-chave: Conservação; Educação Ambiental; Análise Geoambiental. ABSTRACTThe research deals with an analysis of the relation nature-society in the context of the APA (Ambiental Protection Area) of Ceará River and it had as main objective the study of the negative impacts suffered from this interaction, describing the main problems caused by the disordered occupation, such as the intervention in the dunes, mangrove pollution and deforestation of the riparian forest, which condition the change of the natural dynamics of the environment causing landscape and biological interferences in the place. The theoretical methodological support is based on the relevant classical theories, as well as secondary data collection, field work and the geoprocessing technique for the preparation of cartographic material. The results show the urgency to insert practices related to environmental education in the APA, so this work aims to serve as a subsidy to raise awareness of the need to preserve this environment, recommending in this way the dialogue between the population and responsible bodies to ensure sustainable use of the same. Keywords: Conservation; Environmental education; Geoenvironmental Analysis. RESUMENLa investigación aborda un análisis de la relación de la sociedad de la naturaleza en el contexto del Área de Protección Ambiental (APA) del río Ceará y su objetivo principal fue el estudio de los impactos negativos sufridos por esta interacción, describiendo los principales problemas causados por la ocupación desordenada, como el intervención en las dunas, contaminación del manglar y deforestación del bosque ribereño, que condicionan el cambio de la dinámica natural del ambiente causando interferencia biológica y paisajística en el lugar. La base teórica metodológica se basa en las teorías clásicas relevantes, así como en la recolección secundaria de datos, el trabajo de campo y la técnica de geoprocesamiento para la preparación de material cartográfico. Los resultados demuestran la urgencia de insertar prácticas relacionadas con la educación ambiental en la APA, por lo tanto, el trabajo tiene como objetivo apoyar la conciencia de la necesidad de preservar este medio ambiente, recomendando así el diálogo entre la población y los organismos responsables para garantizar un uso sostenible de la misma.Palabras clave: Conservación; Educación ambiental; Análisis geoambiental.

Territory Size, Energetics, and Breeding Strategy in the Corvidae

1986 ◽  
Vol 128 (5) ◽  
pp. 642-652 ◽  
Author(s):  
Christopher C. Shank
Keyword(s):  
Breeding Strategy ◽  
Territory Size

Female Choice in Middendorff's Grasshopper-Warbler (Locustella Ochotensis)

The Auk ◽  
1986 ◽  
Vol 103 (4) ◽  
pp. 694-700 ◽  
Author(s):  
Hisashi Nagata
Keyword(s):  
Mate Choice ◽  
Female Choice ◽  
Morphological Characteristics ◽  
Female Mate Choice ◽  
Food Abundance ◽  
Territory Size ◽  
Territory Quality ◽  
Female Mate ◽  
Nest Sites ◽  
Grasshopper Warbler

Abstract Morphological and territorial factors that influence female mate choice were examined in the monogamous Middendorff's Grasshopper-Warbler (Locustella ochotensis) on an islet near Fukuoka, Japan. I assumed that pairing date corresponded with female mate choice. Pairing date was correlated with both territory size and food abundance but was not correlated with selected morphological characteristics of males. Territorial quality was assumed to be correlated with territory size because preferable food resources and nest sites were distributed randomly. I conclude that female mate choice was influenced by territory quality rather than by the morphological characteristics of males.

scholarly journals Effect of Pheromone Blend Components, Sex Ratio, and Population Size on the Mating of Cadra cautella (Lepidoptera: Pyralidae)

2020 ◽  
Vol 20 (6) ◽  
Author(s):  
Abeysinghe Mudiyanselage Prabodha Sammani ◽  
Dissanayaka Mudiyanselage Saman Kumara Dissanayaka ◽  
Leanage Kanaka Wolly Wijayaratne ◽  
William Robert Morrison
Keyword(s):  
Sex Ratio ◽  
Population Size ◽  
Management Practices ◽  
Mating Disruption ◽  
Current Knowledge ◽  
Mating Status ◽  
Cadra Cautella ◽  
Synthetic Chemicals ◽  
Population Sizes ◽  
Lepidoptera Pyralidae

Abstract The almond moth Cadra cautella (Walker), a key pest of storage facilities, is difficult to manage using synthetic chemicals. Pheromone-based management methods remain a high priority due to advantages over conventional management practices, which typically use insecticides. Cadra cautella females release a blend of pheromone including (Z, E)-9,12-tetradecadienyl acetate (ZETA) and (Z)-9-tetradecadien-1-yl acetate (ZTA). The effect of these components on mating of C. cautella and how response varies with the population density and sex ratio remain unknown. In this study, the mating status of C. cautella was studied inside mating cages under different ratios of ZETA and ZTA diluted in hexane and at different population sizes either with equal or unequal sex ratio. The lowest percentage of mated females (highest mating disruption [MD] effects), corresponding to roughly 12.5%, was produced by a 5:1 and 3.3:1 ratio of ZETA:ZTA. Populations with equal sex ratio showed the lowest percentage of mated females, at 20% and 12.5% under lower and higher density, respectively. The next lowest percentage of mated females was produced when the sex ratio was set to 1: 2 and 2:1 male:female, with just 25% and 22.5% of moths mated, respectively. This study shows that mating status of C. cautella is influenced by ZETA:ZTA ratio, sex ratio, and population size. This current knowledge would have useful implications for mating disruption programs.

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