Modelling the third dimension: Incorporating topography into the movement rules of an individual-based spatially explicit population model

Alderman, J.; Hinsley, Shelley A.

doi:10.1016/j.ecocom.2007.06.009

Cited by 14 publications

(8 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…phenolics) are low (Van Soest 1994). Changing elevation may also imply higher costs of movements (Frair et al 2005, Alderman andHinsley 2007), especially when snow cover is deep (Parker et al 1984). Candidate SSF models (see Table 1 for model description) used to explain step selection by male moose when moving in the Laurentides Wildlife Reserve during day and night, by annual period.…”

Section: Discussionmentioning

confidence: 99%

“…variation in elevation) also had the highest body weights, suggesting a benefit of this behaviour on fitness. Changing elevation may also imply higher costs of movements (Frair et al 2005, Alderman andHinsley 2007), especially when snow cover is deep (Parker et al 1984). This may be why moose avoided varying elevation in late winter when snow conditions were the worst.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

What drives fine‐scale movements of large herbivores? A case study using moose

Leblond¹,

Dussault²,

Ouellet³

2010

Ecography

View full text Add to dashboard Cite

and J.-P. Ouellet, Univ. du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, PQ, Canada, G5L-3A1. Á C. Dussault, Service de la faune terrestre et de l'avifaune, Ministère des Ressources naturelles et de la Faune du Québec, 880 Chemin Sainte-Foy, 2e étage, Québec, PQ, Canada, G1S-4X4.Understanding animal movements across heterogeneous landscapes is of great interest because it helps explain the dynamic processes influencing the distribution of individuals in space. Research on how animals move relative to shortrange environmental characteristics are scarce. Our objective was to determine the variables influencing movement of a large ungulate, the moose Alces alces, ranging across a boreal landscape, and to link movement behaviour with limiting factors at a fine scale. We assessed 7 candidate models composed of vegetation, solar energy, and topography variables using step selection functions (SSF) for male and female moose across daily and annual periods. We selected and weighted models using the Bayesian Information Criterion. Variables influencing small-scale movements of moose differed among periods and between sexes, likely in response to corresponding changes in the importance of limiting factors. Best models often combined many types of variables, although simpler models composed of only vegetation or topography variables explained male's movements during rut and early winter. Moose steps were observed in good feeding stands from summer to early winter for females and from spring to early winter for males, supporting other studies of moose habitat selection. From summer to early winter, females alternatively selected and avoided cover stands during day and night, respectively. Solar energy reaching the ground was important, particularly during late winter and spring, likely due to its effect on snow cover, air temperature, or plant phenology. Moose generally moved in gentle slopes and variable elevation, which may have increased their chances of finding high quality forage, or improved their search of suitable calving sites or mates. Our study revealed the great complexity and dynamic aspects of animal movements in a heterogeneous landscape. Analysis of animal movement provides complementary information to more static habitat selection analyses and helps understanding the spatial variations in the distribution of individuals through time.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

What drives fine‐scale movements of large herbivores? A case study using moose

Leblond¹,

Dussault²,

Ouellet³

2010

Ecography

View full text Add to dashboard Cite

show abstract

“…During a simulation run, the locations of individuals are superimposed on the landscape, presenting a real-time visual output to the user. PatchMapper is further described in Alderman et al (2005), with typical applications given in Alderman et al (2005) and Alderman and Hinsley (2007). The description of the model configuration used for the investigations detailed in this paper which follows is based on the Overview, Design concepts and Details (ODD) protocol as proposed by Grimm et al (2006), for describing individual based models.…”

Section: Introductionmentioning

confidence: 99%

Local Settlement in Woodland Birds in Fragmented Habitat: Effects of Natal Territory Location and Timing of Fledging

et al. 2011

View full text Add to dashboard Cite

Factors such as early fledging and natal territory location have been shown to influence dispersal and settlement success of woodland birds. Early fledging allows for earlier dispersal, increasing the chances of an individual locating good quality habitat. However, for birds in fragmented woodland, the advantages of early dispersal may be modified by natal territory location in relation to the availability of suitable habitat in the surrounding landscape. Connecting habitat corridors may promote dispersal, and connectivity in landscapes is usually considered as positive, but this may not always be the case. In landscapes where habitat is highly fragmented, corridors may promote departure, but leave dispersers with little chance of success.An individual-based Spatially Explicit Population Model was used to investigate the effects of timing of fledging, natal territory location and proximity to potential dispersal corridors on local settlement rates. Modelling was based on both hypothetical and real woodlands and used marsh tit as an example woodland bird. For each modelled scenario, the number of young that settled was recorded for each territory, the overall results being expressed as the mean percentage settlement rate per territory.Territory location and edge effects were both found to influence dispersal and settlement rate. Fledging early clearly demonstrated a general advantage for local settlement success. However, territory location, in relation to the likelihood of dispersing out of the wood was found to interact with fledging order. Fledglings from internal territories had an advantage over those from edge territories and local settlement rate could be reduced by a location favourable to emigration. In general, the effect of exits was to reduce the settlement rate of early fledging young while that of later young tended to increase. In highly fragmented woodland, fledging late from a well-connected edge territory would appear to be the worst case scenario.

show abstract

“…However, freshwater turtle species may not easily or regularly travel overland between water bodies because of high physiological costs . A dispersing individual could also be limited by its perceptual range, or its ability to 'see' patches in the landscape (Alderman and Hinsley 2007), which is likely low for small, ground-dwelling wood turtles. Topography may have a large influence on restricting an animal's perceptual range (Alderman and Hinsley 2007).…”

Section: Environmental Influences Acting As Southern Range Limitationsmentioning

confidence: 99%

“…A dispersing individual could also be limited by its perceptual range, or its ability to 'see' patches in the landscape (Alderman and Hinsley 2007), which is likely low for small, ground-dwelling wood turtles. Topography may have a large influence on restricting an animal's perceptual range (Alderman and Hinsley 2007). In Pennsylvania, never observed a wood turtle travel farther than 88 m up a mountain from its lowland boundary.…”

Section: Environmental Influences Acting As Southern Range Limitationsmentioning

confidence: 99%

Riparian Ecological Community Assessment with an Emphasis on Wood Turtles (Glyptemys insculpta) in the Cacapon River Watershed, West Virginia

McCoard¹

View full text Add to dashboard Cite

Riparian zones serve to maintain high water quality, low water temperatures, and structural complexity in aquatic and terrestrial environments, among other beneficial services. Riparian buffers provide habitat and corridors linking forest patches for terrestrial wildlife. High riparian vegetative structure and complexity attract a high diversity of wildlife, including birds, herpetofauna, and small mammals. Devegetated riparian zones, often a result of developmental and agricultural practices, lose their beneficial functions and require restorative actions to regain them. The Cacapon River watershed in West Virginia is agriculturally-dominated with many areas of riparian zone degradation. A section of the Cacapon River was selected for natural stream channel design restoration during 2009 to 2011. Our objectives were to: (1) monitor birds, small mammals, anurans, and vegetation along the restoration reach, 2 control (impaired) sites, and 2 reference (unimpaired) sites following a before-after control-impact design along the Cacapon River; (2) survey natural history characteristics of wood turtles (Glyptemys insculpta) using the riparian zone along the Cacapon River; and (3) assess factors limiting wood turtles along the southern extent of their geographic range along the Lost and North rivers, tributaries of the Cacapon River. We expected (1) the diversity of the riparian wildlife to remain stable or increase post-restoration, (2) wood turtles to undergo all natural history aspects within the riparian zone, and (3) geographical and environmental features to limit wood turtles along the southern border of their range in the Cacapon River watershed. Monitoring of riparian wildlife along the Cacapon River occurred pre-(April 2009 to April 2010) and post-restoration (May 2010 to August 2011). Overall, 6 small mammal species, 79 bird species, 8 anuran species, and 96 plant species were recorded. Small mammal abundance declined initially in the restoration reach post-impact, but began to recover. Overall bird abundance, richness, and diversity increased along the restoration reach post-impact. The anurans were unaffected by the restoration activities, but showed species-specific timing of reproductive activities across the sites. Shrub and tree diversity, richness, and evenness increased over time, possibly indicating that the restoration reach began improving in vegetative complexity post-impact. The restoration was considered a success because the diversity of the riparian wildlife remained stable or increased post-restoration. Monitoring of wood turtles along the Cacapon River occurred during spring 2009 to summer 2011. The turtles were observed primarily using the riparian zone (80.7%) instead of the surrounding agricultural land (19.3%). Adult males and females were larger than juveniles. Reproductively active males were longer, thicker, and heavier than reproductively active females. Home ranges were 0.62-36.97 ha. Low bare ground and rock cover and high vertical density differentiated the turtles' habitat from r...

show abstract

Modelling the third dimension: Incorporating topography into the movement rules of an individual-based spatially explicit population model

Cited by 14 publications

References 65 publications

What drives fine‐scale movements of large herbivores? A case study using moose

What drives fine‐scale movements of large herbivores? A case study using moose

Local Settlement in Woodland Birds in Fragmented Habitat: Effects of Natal Territory Location and Timing of Fledging

Riparian Ecological Community Assessment with an Emphasis on Wood Turtles (Glyptemys insculpta) in the Cacapon River Watershed, West Virginia

Contact Info

Product

Resources

About