Food resources influence spatial ecology, habitat selection, and foraging behavior in an ambush-hunting snake (Viperidae: Bothrops asper): an experimental study

Zoology ◽  
2012 ◽  
Vol 115 (3) ◽  
pp. 179-187 ◽  
Author(s):  
Dennis K. Wasko ◽  
Mahmood Sasa
Keyword(s):  
Experimental Study ◽  
Habitat Selection ◽  
Foraging Behavior ◽  
Spatial Ecology ◽  
Food Resources ◽  
Bothrops Asper

Variations in grizzly bear habitat selection in relation to the daily and seasonal availability of annual plant-food resources

2020 ◽  
Vol 58 ◽  
pp. 101116 ◽  
Author(s):  
Cameron J.R. McClelland ◽  
Nicholas C. Coops ◽  
Sean P. Kearney ◽  
A. Cole Burton ◽  
Scott E. Nielsen ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Food Resources ◽  
Grizzly Bear ◽  
Annual Plant ◽  
Plant Food

Foraging efficiency of a predator flock for randomly moving prey: A simulation study

2016 ◽  
Vol 30 (09) ◽  
pp. 1650135
Author(s):  
Sang-Hee Lee ◽  
Ohsung Kwon
Keyword(s):  
Foraging Behavior ◽  
Simulation Study ◽  
Food Resources ◽  
Foraging Efficiency ◽  
Prey Detection ◽  
Time Step ◽  
Detection Ability ◽  
Simulation Results ◽  
Flocking Behavior ◽  
Iteration Time

Flocking behavior of animals is highly advantageous for taking food resources. The degree of the advantage is related to the ability of flock members to detect their prey and the mobility of prey individuals. In this study, to explore the relation, we constructed a model to simulate a predator flock and its randomly moving prey. The predator members have the prey detection ability, which was characterized as sensing distance, [Formula: see text], and a sensing angle, [Formula: see text]. The mobility of the prey individuals was characterized as the maximum traveling distance of an iteration time step, [Formula: see text]. The relative flock foraging efficiency, [Formula: see text], was defined as [Formula: see text]. [Formula: see text] and [Formula: see text] represent the spent time for the flock to eat all prey individuals and to uptake the last remaining 10% prey, respectively. Simulation results showed that [Formula: see text] increased, maximized, and decreased with the increase of [Formula: see text], regardless of [Formula: see text]. As the number of prey, [Formula: see text], increased, the tendency of the increasing and decreasing was diluted. The result was briefly discussed in relation to the flock foraging behavior and the development of the model toward applications for real ecosystems.

Habitat selection by a large herbivore at multiple spatial and temporal scales is primarily governed by food resources

Ecography ◽  
2016 ◽  
Vol 40 (8) ◽  
pp. 1014-1027 ◽  
Author(s):  
Claudia Dupke ◽  
Christophe Bonenfant ◽  
Björn Reineking ◽  
Robert Hable ◽  
Thorsten Zeppenfeld ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Food Resources ◽  
Temporal Scales ◽  
Large Herbivore ◽  
Spatial And Temporal Scales

scholarly journals Great egret (Ardea alba) habitat selection and foraging behavior in a temperate estuary: Comparing natural wetlands to areas with shellfish aquaculture

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261963
Author(s):  
Scott Jennings ◽  
David Lumpkin ◽  
Nils Warnock ◽  
T. Emiko Condeso ◽  
John P. Kelly
Keyword(s):  
Habitat Selection ◽  
Foraging Behavior ◽  
Water Depth ◽  
Active Management ◽  
Sea Levels ◽  
Shellfish Aquaculture ◽  
Tidal Cycles ◽  
Ardea Alba ◽  
Natural Wetlands ◽  
Selection For

Movement by animals to obtain resources and avoid predation often depends on natural cycles, and human alteration of the landscape may disrupt or enhance the utility of different habitats or resources to animals through the phases of these cycles. We studied habitat selection by GPS/accelerometer-tagged great egrets (Ardea alba) foraging in areas with shellfish aquaculture infrastructure and adjacent natural wetlands, while accounting for tide-based changes in water depth. We used integrated step selection analysis to test the prediction that egrets would express stronger selection for natural wetlands (eelgrass, tidal marsh, and other tidal wetlands) than for shellfish aquaculture areas. We also evaluated differences in foraging behavior among shellfish aquaculture areas and natural wetlands by comparing speed travelled (estimated from distance between GPS locations) and energy expended (Overall Dynamic Body Acceleration) while foraging. We found evidence for stronger overall habitat selection for eelgrass than for shellfish aquaculture areas, with results conditional on water depth: egrets used shellfish aquaculture areas, but only within a much narrower range of water depths than they used eelgrass and other natural wetlands. We found only slight differences in our metrics of foraging behavior among shellfish aquaculture areas and natural wetlands. Our results suggest that although great egrets appear to perceive or experience shellfish aquaculture areas as suitable foraging habitat during some conditions, those areas provide less foraging opportunity throughout tidal cycles than natural wetlands. Thus, expanding the footprint of shellfish aquaculture into additional intertidal areas may reduce foraging opportunities for great egrets across the range of tidal cycles. Over longer time scales, the ways in which natural wetlands and shellfish aquaculture areas adapt to rising sea levels (either through passive processes or active management) may change the ratios of these wetland types and consequently change the overall value of Tomales Bay to foraging great egrets.

scholarly journals Spatial ecology and habitat selection of Little Owl Athene noctua during the breeding season in Central European farmland

2011 ◽  
Vol 22 (3) ◽  
pp. 328-338 ◽  
Author(s):  
MARTIN ŠÁLEK ◽  
MATĚJ LÖVY
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Breeding Season ◽  
Spatial Ecology ◽  
Active Management ◽  
Vegetation Height ◽  
Management Actions ◽  
Athene Noctua ◽  
Little Owl ◽  
Selection Of

SummaryInformation on habitat requirements and spatial ecology is vital in conservation strategies and management of particular species. Little Owl Athene noctua is a highly threatened owl species whose populations have significantly decreased or are locally extinct in many European countries. In this study we report on spatial ecology and habitat selection of Little Owls during their breeding season in an agricultural landscape and discuss key management actions for its conservation. The mean home range size of radio-tracked Little Owls, determined by the kernel method, was 0.94 ha (SD = 0.95, 0.24–2.72 ha) and 4.30 ha (SD = 3.75, 0.88–11.70 ha) for 50% and 95% home range, respectively. The smallest home ranges were recorded in April–June (incubation and nesting period) with a significant increase in July–August (fledging season). The most important foraging habitat during the entire breeding season was grassland (especially pastures) reaching 90% for all locations. Vegetation height and cover were the main factors determining habitat selection: Little Owls significantly preferred sparse and short sward vegetation patches that enabled hunting of ground-dwelling prey. Conservation efforts for Little Owls should focus on the active management of prey-rich grassland habitats in the vicinity of breeding sites.

USO DO HABITAT POR ONÇA-PINTADA (PANTHERA ONÇA) NO ENTORNO DE LAGOS DE VÁRZEA, RESERVA DE DESENVOLVIMENTO SUSTENTÁVEL MAMIRAUÁ, AM, BRASIL

2009 ◽  
Vol 4 (2) ◽  
pp. 33-39 ◽  
Author(s):  
Emiliano Esterci Ramalho ◽  
William Ernest Magnusson
Keyword(s):  
Sustainable Development ◽  
Habitat Selection ◽  
Home Range ◽  
Foraging Behavior ◽  
Habitat Type ◽  
Panthera Onca ◽  
Habitat Types ◽  
Predator Prey

Understanding how a species moves between habitats available in its home range is key for interpreting spatial-temporal habitat selection patterns, foraging behavior, and predator-prey interactions. The use of habitat by the jaguar(Panthera onca) generally reflects the density and movement of its prey and not the availability of habitats. However, there is no information about how the species uses the habitats available in the Amazonian várzea. The objective of this study was to test if the jaguar uses the habitats available in the surroundings of várzea lakes, in proportion to their availability or if it shows preference for a specific habitat type. To achieve this objective we surveyed, on foot, the surroundings of 36 várzea lakes in the Mamirauá Sustainable Development Reserve, recording jaguar presence through observation of signs and identifying and quantifying the available habitats. Although we found signs of jaguar presence in all habitat types surveyed, the number of signs found in habitat type chavascal was greater than expected by its availability...

Neonate Cottonmouth Spatial Ecology and Habitat Selection: From Parturition to Hibernation

2019 ◽  
Vol 18 (2) ◽  
pp. 334
Author(s):  
Zackary J. Delisle ◽  
Dean Ransom ◽  
Johanna Delgado-Acevedo
Keyword(s):  
Habitat Selection ◽  
Spatial Ecology
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