Habitat selection and prediction of the spatial distribution of the Chinese horseshoe bat (R. sinicus) in the Wuling Mountains

2018 ◽  
Vol 191 (1) ◽  
Author(s):  
Liang Liang ◽  
Xiang Luo ◽  
Zhixiao Liu ◽  
Jiahui Wang ◽  
Ting Huang ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Horseshoe Bat

Habitat use of the introduced cane toad (Rhinella marina) and native frog species in tropical Australia

2015 ◽  
Vol 31 (6) ◽  
pp. 531-540 ◽  
Author(s):  
Martin Mayer ◽  
Gregory P. Brown ◽  
Barbara Zimmermann ◽  
Matthew J. Greenlees ◽  
Richard Shine
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Habitat Use ◽  
Ecological Impacts ◽  
Northern Australia ◽  
Cane Toad ◽  
Rhinella Marina ◽  
Frog Species ◽  
Tropical Australia ◽  
Reducing Activity

Abstract:The ecological impacts of introduced species can reveal mechanisms underlying habitat selection and behaviour. We investigated the habitat use of native frog species and the invasive cane toads (Rhinella marina) in tropical northern Australia to measure overlap in habitat use, and to test if the presence of the cane toad influences frog behaviour. Native frog species and the cane toad both preferred habitats close to water and unvegetated holes. However, native frogs were found further from water (on average 19.4 m) than were toads (on average 12.6 m), and preferred areas with higher vegetation (8–50 cm) than did toads, which were more abundant in vegetation lower than 8 cm. For both types of anuran, the next neighbour was more often of the same type (89% in frogs, 52% in toads) than expected by chance (observed ratio: 75% frogs vs 25% toads), reflecting these differences in habitat use. Our counts of frog abundance increased on average 14.5% in areas from which we removed cane toads temporarily. This result suggests that cane toads inhibit the activity of native anurans either by inducing avoidance, or by reducing activity. By modifying the behaviour and spatial distribution of native taxa, invasive cane toads may curtail activities such as feeding and breeding.

scholarly journals Prey-Driven Behavioral Habitat Use in a Low-Energy Ambush Predator

2020 ◽  
Author(s):  
Annalee M. Tutterow ◽  
Andrew S. Hoffman ◽  
John L. Buffington ◽  
Zachary T. Truelock ◽  
William E. Peterman
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Small Mammal ◽  
Optimal Foraging ◽  
Prey Availability ◽  
Low Energy ◽  
List Type ◽  
Fine Scale ◽  
Timber Rattlesnake ◽  
Ambush Predator

AbstractFood acquisition is an important modulator of animal behavior and habitat selection that can affect fitness. Optimal foraging theory predicts that predators should select habitat patches to maximize their foraging success and net energy gain, which predators can achieve by targeting spaces with high prey availability. However, it is debated whether prey availability drives fine-scale habitat selection for predators.We assessed whether an ambush predator, the timber rattlesnake (Crotalus horridus), exhibits optimal foraging site selection based on the spatial distribution and availability of prey.We evaluated the spatial concordance of radio-telemetered timber rattlesnake foraging locations and passive infrared game camera trap detections of potential small mammal prey (Peromyscus spp., Tamias striatus, and Sciurus spp.) in a mixed-use forest in southeastern Ohio from 2016–2019. We replicated a characteristic timber rattlesnake ambush position by focusing cameras over logs and modeled small mammal encounters across the landscape in relation to remotely-sensed forest and landscape structural features. To determine whether snakes selectively forage in areas with higher prey availability, we projected the estimated prey spatial relationships across the landscape and modeled their overlap of occurrence with observed timber rattlesnake foraging locations.We broadly predicted that prey availability was greatest in mature deciduous forests, but T. striatus and Sciurus spp. exhibited greater spatial heterogeneity compared to Peromyscus spp. We also combined predicted species encounter rates to encompass a body size gradient in potential prey. The spatial distribution of cumulative small mammal encounters (i.e. overall prey availability), rather than the distribution of any one species, was highly predictive of snake foraging.Timber rattlesnakes appear to select foraging locations where the probability of encountering prey is greatest. Our study provides evidence for fine-scale optimal foraging in a low-energy, ambush predator and offers new insights into drivers of snake foraging and habitat selection.

Spatial distribution of Branchinectella media (Crustacea, Branchiopoda) in a saline pond from "La Mancha Húmeda": a case of habitat selection?

Limnetica ◽  
2018 ◽  
pp. 69-83
Author(s):  
Pons, Priscila ◽  
Gonçalves, Maycon S. S. ◽  
Gil-Delgado, José A. ◽  
Ortells, Raquel
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
La Mancha

Spatial distribution and habitat selection in coexisting species of mountain ungulates

Ecography ◽  
2012 ◽  
Vol 35 (1) ◽  
pp. 44-53 ◽  
Author(s):  
Gaëlle Darmon ◽  
Clément Calenge ◽  
Anne Loison ◽  
Jean-Michel Jullien ◽  
Daniel Maillard ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Coexisting Species ◽  
Mountain Ungulates

Habitat Selection by Spiders on Coastal Sand Dunes in Scania, Sweden

1973 ◽  
Vol 4 (2) ◽  
pp. 134-154 ◽  
Author(s):  
Sven Almquist
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Sand Dunes ◽  
Coastal Sand Dunes ◽  
Population Densities ◽  
Spider Species ◽  
Intrinsic Factors ◽  
Coastal Sand ◽  
Environment Factor ◽  
Selection Of

AbstractThis paper deals with the habitat selection of I5 species of spiders on coastal sand dunes studied by the analysis of their spatial distribution of individuals correlated to some intrinsic factors and to environmental conditions. The data are based on a total of 82I samples of I m2 each collected in the course of I7 months at Sandhammaren, SE SkÅne, Sweden. The complicated interplay between the climatic and vegetational conditions of the area and the thermal tolerances, preferences and escape reactions, as well as the resistance to desiccation of the spider species was indicated in the variation of the distribution of the population densities in the biotopes of the dunes. The temperature proved to be a critical environment factor, a main cause of the distribution of the spiders, obvious for e.g. Clubiona trivialis C. Koch, while the humidity seemed to be more important for the habitat selection of Oedothorax apicatus (Bl.).

scholarly journals Habitat selection by owls in a seasonal semi-deciduous forest in southern Brazil

2015 ◽  
Vol 75 (4 suppl 1) ◽  
pp. 143-149 ◽  
Author(s):  
W. Menq ◽  
L. Anjos
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Vegetation Structure ◽  
Deciduous Forest ◽  
Vegetation Types ◽  
Southern Brazil ◽  
Structural Components ◽  
Hollow Trees ◽  
Glaucidium Brasilianum ◽  
Biological Reserve

Abstract This paper tested the hypothesis that the structural components of vegetation have impact over the distribution of owl species in a fragment of a semi-deciduous seasonal forest. This paper also determined which vegetation variables contributed to the spatial distribution of owl species. It was developed in the Perobas Biological Reserve (PBR) between September and December 2011. To conduct the owl census, a playback technique was applied at hearing points distributed to cover different vegetation types in the study area. A total of 56 individual owls of six species were recorded: Tropical Screech-Owl (Megascops choliba), Black-capped Screech-Owl (Megascops atricapilla), Tawny-browed Owl (Pulsatrix koeniswaldiana), Ferruginous Pygmy-Owl (Glaucidium brasilianum), Mottled Owl (Strix virgata) and Stygian Owl (Asio stygius). The results suggest that the variables of vegetation structure have impact on the occurrence of owls. The canopy height, the presence of hollow trees, fallen trees and glades are the most important structural components influencing owl distribution in the sampled area.

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