Effects of Scale on Habitat Selection and Foraging Behavior of Fishers in Winter

1994 ◽  
Vol 75 (2) ◽  
pp. 349-356 ◽  
Author(s):  
R. A. Powell
Keyword(s):  
Habitat Selection ◽  
Foraging Behavior

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.

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...

Mixed effects of an introduced ecosystem engineer on the foraging behavior and habitat selection of predators

Ecology ◽  
2018 ◽  
Vol 99 (12) ◽  
pp. 2751-2762 ◽  
Author(s):  
Linsey E. Haram ◽  
Kaitlin A. Kinney ◽  
Erik E. Sotka ◽  
James E. Byers
Keyword(s):  
Habitat Selection ◽  
Foraging Behavior ◽  
Ecosystem Engineer ◽  
Mixed Effects ◽  
Selection Of

scholarly journals Foraging Behavior and Habitat Selection of Noack’s Round-Leaf Bat (Hipposiderosaff.ruber) and Conservation Implications

2016 ◽  
Vol 9 (4) ◽  
pp. 194008291668042 ◽  
Author(s):  
Evans E. Nkrumah ◽  
Peter Vallo ◽  
Stefan M. Klose ◽  
Simon P. Ripperger ◽  
Ebenezer K. Badu ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Foraging Behavior ◽  
Conservation Implications ◽  
Selection Of

Does food-searching ability determine habitat selection? Foraging in sand of three species of gerbilline rodents

Ecography ◽  
2000 ◽  
Vol 23 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Boris R. Krasnov ◽  
Georgy I. Shenbrot ◽  
Luis E. Rios ◽  
Maria E. Lizurume
Keyword(s):  
Habitat Selection ◽  
Searching Ability
Sign in / Sign up

Export Citation Format

Share Document