scholarly journals Group-size-mediated habitat selection and group fusion–fission dynamics of bison under predation risk

Ecology ◽  
2009 ◽  
Vol 90 (9) ◽  
pp. 2480-2490 ◽  
Author(s):  
Daniel Fortin ◽  
Marie-Eve Fortin ◽  
Hawthorne L. Beyer ◽  
Thierry Duchesne ◽  
Sabrina Courant ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Predation Risk ◽  
Group Size ◽  
Group Fusion

Desert bighorn sheep habitat selection, group size, and mountain lion predation risk

2022 ◽  
Author(s):  
Andrew S. Jones ◽  
Esther S. Rubin ◽  
Matthew J. Clement ◽  
Larisa E. Harding ◽  
Jacob I. Mesler
Keyword(s):  
Habitat Selection ◽  
Predation Risk ◽  
Group Size ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Mountain Lion ◽  
Selection Group

Predation Risk and Competition Affect Habitat Selection and Activity of Namib Desert Gerbils

Ecology ◽  
1994 ◽  
Vol 75 (5) ◽  
pp. 1397-1405 ◽  
Author(s):  
Jessica J. Hughes ◽  
David Ward ◽  
Michael R. Perrin
Keyword(s):  
Habitat Selection ◽  
Predation Risk ◽  
Namib Desert

Hunted hunters? Effect of group size on predation risk and growth in the Australian subsocial crab spider Diaea ergandros

2013 ◽  
Vol 67 (5) ◽  
pp. 785-794 ◽  
Author(s):  
Bianca Unglaub ◽  
Jasmin Ruch ◽  
Marie E. Herberstein ◽  
Jutta M. Schneider
Keyword(s):  
Predation Risk ◽  
Group Size ◽  
Crab Spider

scholarly journals Habitat selection by post-settlement juvenile stone crabs (Menippe mercenaria) and predation risk in shallow near-shore habitats

2022 ◽  
Vol 547 ◽  
pp. 151679
Author(s):  
Linae Boehme-Terrana ◽  
Michelle Roux-Osovitz ◽  
Erin Goergen ◽  
Harrison Mancke ◽  
Samantha Fisher ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Predation Risk ◽  
Near Shore

Evaluating trade-offs between forage, biting flies, and footing on habitat selection by wood bison (Bison bison athabascae)

2020 ◽  
Vol 98 (4) ◽  
pp. 254-261
Author(s):  
R.J. Belanger ◽  
M.A. Edwards ◽  
L.N. Carbyn ◽  
S.E. Nielsen
Keyword(s):  
Habitat Selection ◽  
Environmental Factors ◽  
Predation Risk ◽  
Bison Bison ◽  
Winter Habitat ◽  
Forage Availability ◽  
Trade Offs ◽  
Wood Bison ◽  
Insect Harassment ◽  
Biting Fly

Habitat selection is a behavioural process that ultimately affects animal fitness. Forage availability and predation risk are often studied in the context of habitat selection for large ungulates, while other biological and environmental factors such as insect harassment and footing are less studied. Here we examine trade-offs in summer habitat selection between forage availability for wood bison (Bison bison athabascae Rhoads, 1898) with that of biting-fly harassment and soil firmness, which affects activity budgets and predation risk, respectively, and contrast this to winter when flies are absent and soils frozen. Using path analysis, we demonstrate that graminoid availability was not related to habitat selection in summer, but was positively related to habitat selection in winter. Habitat selection in summer was negatively related to biting-fly abundance and positively related to firmer footing. Our results suggest that bison observe trade-offs in summer between maximizing forage intake and minimizing harassment from that of biting flies, while avoiding areas of soft substrates that affect locomotion and vulnerability to predators. In contrast, during the winter, bison focus on areas with greater graminoid availability. Although forage is a key aspect of habitat selection, our results illustrate the importance of considering direct and indirect effects of multiple biological and environmental factors related to ungulate habitat selection.

Ecological drivers of group size in female Alpine chamois, Rupicapra rupicapra

Mammalia ◽  
2015 ◽  
Vol 79 (4) ◽  
Author(s):  
Roberta Chirichella ◽  
Andrea Mustoni ◽  
Marco Apollonio
Keyword(s):  
Predation Risk ◽  
Energy Intake ◽  
Group Size ◽  
Food Availability ◽  
Herd Size ◽  
Rupicapra Rupicapra ◽  
Trade Off ◽  
Mammalian Herbivores ◽  
Alpine Chamois

AbstractIn large mammalian herbivores, an increase in herd size not only reduces predation risk but also energy intake. As a consequence, the size of the groups made up by herbivores is often assumed to be the outcome of a trade-off depending on local predation risk and food availability. We studied Alpine chamois (

scholarly journals Prey synchronize their vigilant behaviour with other group members

2007 ◽  
Vol 274 (1615) ◽  
pp. 1287-1291 ◽  
Author(s):  
Olivier Pays ◽  
Pierre-Cyril Renaud ◽  
Patrice Loisel ◽  
Maud Petit ◽  
Jean-François Gerard ◽  
...  
Keyword(s):  
Predation Risk ◽  
Group Size ◽  
Prey Species ◽  
Group Members ◽  
The Individual ◽  
The Cost ◽  
Group Member

It is generally assumed that an individual of a prey species can benefit from an increase in the number of its group's members by reducing its own investment in vigilance. But what behaviour should group members adopt in relation to both the risk of being preyed upon and the individual investment in vigilance? Most models assume that individuals scan independently of one another. It is generally argued that it is more profitable for each group member owing to the cost that coordination of individual scans in non-overlapping bouts of vigilance would require. We studied the relationships between both individual and collective vigilance and group size in Defassa waterbuck, Kobus ellipsiprymnus defassa , in a population living under a predation risk. Our results confirmed that the proportion of time an individual spent in vigilance decreased with group size. However, the time during which at least one individual in the group scanned the environment (collective vigilance) increased. Analyses showed that individuals neither coordinated their scanning in an asynchronous way nor scanned independently of one another. On the contrary, scanning and non-scanning bouts were synchronized between group members, producing waves of collective vigilance. We claim that these waves are triggered by allelomimetic effects i.e. they are a phenomenon produced by an individual copying its neighbour's behaviour.

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