scholarly journals Extensive daily movement rates measured in territorial arctic foxes

2021 ◽  
Author(s):  
Marie‐Pier Poulin ◽  
Jeanne Clermont ◽  
Dominique Berteaux
Keyword(s):  
Daily Movement ◽  
Movement Rates ◽  
Arctic Foxes

scholarly journals Winter distribution of woodland caribou in relation to clear-cut logging in west-central Alberta

2000 ◽  
Vol 78 (8) ◽  
pp. 1433-1440 ◽  
Author(s):  
Kirby G Smith ◽  
E Janet Ficht ◽  
David Hobson ◽  
Troy C Sorensen ◽  
David Hervieux
Keyword(s):  
Rangifer Tarandus ◽  
Timber Harvest ◽  
Timber Harvesting ◽  
Home Range Size ◽  
Woodland Caribou ◽  
Daily Movement ◽  
Movement Rates ◽  
Clear Cut ◽  
Winter Range ◽  
West Central

The responses of a herd of migratory woodland caribou (Rangifer tarandus caribou) to timber harvesting that fragmented about 11% of their winter range in west-central Alberta were examined in this study. From 1981 to 1996, 45 caribou were radio-collared and monitored during the initiation and completion of first-pass timber harvest (50% removal). Variables examined were home-range size, daily movement rates, and distance to the nearest cut block for radio-collared individuals. Daily movement rates and individual winter range sizes decreased as timber harvesting progressed. Caribou avoided using recently fragmented areas by an average of 1.2 km. If fragmentation of the winter range continues through timber harvesting and other industrial activities, the "spacing out" antipredator strategy used by caribou may be compromised. Based on these findings, timber-harvesting strategies are recommended that (i) ensure an adequate area of usable habitat to support the current population, (ii) minimize the amount of fragmented area, and (iii) in the short term avoid presently defined core use areas.

scholarly journals Use of satellite telemetry data, GIS, and HTML to create an interactive display of caribou movements

Rangifer ◽  
2003 ◽  
Vol 23 (5) ◽  
pp. 101
Author(s):  
Alexander K. Prichard ◽  
Geoffry M. Carroll ◽  
John C. George ◽  
Stephen M. Murphy ◽  
Mike D. Smith ◽  
...  
Keyword(s):  
General Public ◽  
Annual Variation ◽  
Satellite Telemetry ◽  
Telemetry Data ◽  
Daily Movement ◽  
Movement Rates ◽  
Interactive Display ◽  
Wintering Areas

The use of animation clearly reveals the large annual variation in wintering areas and large differences in daily movement rates for this herd. This interactive display can be adapted for school groups, subsistence hunters, the general public, or scientists.

scholarly journals Activity Patterns of Black Bears in Relation to Sex, Season, and Daily Movement Rates

2011 ◽  
Vol 71 (3) ◽  
pp. 388-395 ◽  
Author(s):  
Jesse S. Lewis ◽  
Janet L. Rachlow
Keyword(s):  
Activity Patterns ◽  
Black Bears ◽  
Daily Movement ◽  
Movement Rates

scholarly journals Explicit characterization of human population connectivity reveals long run persistence of interregional dengue shocks

2020 ◽  
Vol 17 (168) ◽  
pp. 20200340 ◽  
Author(s):  
Lim Jue Tao ◽  
Borame Sue Lee Dickens ◽  
Mao Yinan ◽  
Chae Woon Kwak ◽  
Ng Lee Ching ◽  
...  
Keyword(s):  
Climatic Factors ◽  
Population Connectivity ◽  
Daily Movement ◽  
Movement Rates ◽  
Long Run ◽  
Inclusion Probabilities ◽  
Dengue Transmission ◽  
Exogenous Factors

Dengue is hyper-endemic in Singapore and Malaysia, and daily movement rates between the two countries are consistently high, allowing inference on the role of local transmission and imported dengue cases. This paper describes a custom built sparse space–time autoregressive (SSTAR) model to infer and forecast contemporaneous and future dengue transmission patterns in Singapore and 16 administrative regions within Malaysia, taking into account connectivity and geographical adjacency between regions as well as climatic factors. A modification to forecast impulse responses is developed for the case of the SSTAR and is used to simulate changes in dengue transmission in neighbouring regions following a disturbance. The results indicate that there are long-term responses of the neighbouring regions to shocks in a region. By computation of variable inclusion probabilities, we found that each region’s own past counts were important to describe contemporaneous case counts. In 15 out of 16 regions, other regions case counts were important to describe contemporaneous case counts even after controlling for past local dengue transmissions and exogenous factors. Leave-one-region-out analysis using SSTAR showed that dengue transmission counts could be reconstructed for 13 of 16 regions' counts using external dengue transmissions compared to a climate only approach. Lastly, one to four week ahead forecasts from the SSTAR were more accurate than baseline univariate autoregressions.

scholarly journals Regional and age-dependent differences in the effect of wind on the migratory routes of Eleonora’s falcon

2015 ◽  
Vol 61 (3) ◽  
pp. 428-434 ◽  
Author(s):  
Ugo Mellone ◽  
Rubén Limiñana ◽  
Pascual López-López ◽  
Vicente Urios
Keyword(s):  
Satellite Telemetry ◽  
Daily Movement ◽  
Movement Rates ◽  
Equatorial Africa ◽  
Ecological Barriers ◽  
Age Dependent ◽  
Migratory Routes ◽  
Wintering Area ◽  
Orientation Mechanism ◽  
Eleonora’S Falcon

Abstract During migration, birds can show different responses to wind in relation to distance to the goal, experience, ecological barriers and visibility of landmarks. We analysed the effect of wind (tailwinds and crosswinds) on daily movement rates (forward and perpendicular) of Eleonora’s falcons using ARGOS satellite telemetry, during their trans-continental autumn migration to Madagascar, in relation to the different crossed regions and individuals’ age class. Our results showed that the effect of wind on daily movement rates was not uniform, being stronger in the farthest region from the migration goal, the Sahara desert, with adults being more affected than juveniles in this region. In the Sahel, the results were more conflicting, perhaps because daily movements were more shaped by the distribution of food resources. In Equatorial Africa, daily movement rates were mainly affected by crosswinds. Still, it remains unclear which orientation mechanism allows Eleonora’s falcons to reach such a narrow wintering area compensating also for wind displacement.

Home Range and Movements of Feral Cats on Mauna Kea, Hawai?i

2008 ◽  
Vol 14 (3) ◽  
pp. 177 ◽  
Author(s):  
Daniel M. Goltz ◽  
Steven C. Hess ◽  
Kevin W. Brinck ◽  
Paul C. Banko ◽  
Raymond M. Danner
Keyword(s):  
Home Range ◽  
Felis Catus ◽  
Home Ranges ◽  
Conservation Areas ◽  
Buffer Zones ◽  
Feral Cats ◽  
Daily Movement ◽  
Movement Rates ◽  
Major Threat ◽  
The Pacific

Feral cats Felis catus in dry subalpine woodland of Mauna Kea, Hawai?i, live in low density and exhibit some of the largest reported home ranges in the literature. While 95% fixed kernel home range estimates for three females averaged 772 ha, four males averaged 1 418 ha, and one male maintained a home range of 2 050 ha. Mean daily movement rates between sexes overlapped widely and did not differ significantly (P = 0.083). Log-transformed 95% kernel home ranges for males were significantly larger than those of females (P = 0.024), but 25% kernel home ranges for females were larger than those of males (P = 0.017). Moreover, log-transformed home ranges of males were also significantly larger than those of females in this and seven other studies from the Pacific region (P = 0.044). Feral cats present a major threat to endangered Hawaiian birds, but knowledge of their ecology can be used for management by optimizing trap spacing and creating buffer zones around conservation areas.

scholarly journals Seasonal movements of caribou in arctic Alaska as determined by satellite

1989 ◽  
Vol 67 (3) ◽  
pp. 644-650 ◽  
Author(s):  
S. G. Fancy ◽  
L. F. Pank ◽  
K. R. Whitten ◽  
W. L. Regelin
Keyword(s):  
Adult Female ◽  
Rangifer Tarandus ◽  
Satellite Telemetry ◽  
Activity Data ◽  
Seasonal Movements ◽  
Terrestrial Mammal ◽  
Daily Movement ◽  
Movement Rates ◽  
Arctic Alaska

Between 1985 and 1987, 49 283 locations and 79 101 sets of activity data were obtained for 34 adult female caribou (Rangifer tarandus granti) of the Porcupine and Central Arctic herds using satellite telemetry. Daily movement rates of female caribou from the two herds, which differ greatly in size and separation of seasonal ranges, were similar except during the spring and fall migration periods. Movement rates in July exceeded those during migration in both herds. The minimum annual distances travelled by caribou cows, ranging to 5055 km, were the longest movements documented for any terrestrial mammal.

Fat indices of arctic foxes Alopex lagopus in Svalbard

2003 ◽  
Vol 9 (1) ◽  
pp. 193-197 ◽  
Author(s):  
Pål Prestrud ◽  
Caroline M. Pond
Keyword(s):  
Alopex Lagopus ◽  
Arctic Foxes

scholarly journals Winter fidelity, movements, and energy expenditure of Midcontinent Greater White-fronted Geese

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jay A. VonBank ◽  
Mitch D. Weegman ◽  
Paul T. Link ◽  
Stephanie A. Cunningham ◽  
Kevin J. Kraai ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Time Allocation ◽  
Large Scale ◽  
Animal Movement ◽  
Transition Probabilities ◽  
Winter Period ◽  
Daily Movement ◽  
Regional Energy ◽  
Wintering Areas ◽  
Wintering Distribution

Abstract Background Animal movement patterns are the result of both environmental and physiological effects, and the rates of movement and energy expenditure of given movement strategies are influenced by the physical environment an animal inhabits. Greater white-fronted geese in North America winter in ecologically distinct regions and have undergone a large-scale shift in wintering distribution over the past 20 years. White-fronts continue to winter in historical wintering areas in addition to contemporary areas, but the rates of movement among regions, and energetic consequences of those decisions, are unknown. Additionally, linkages between wintering and breeding regions are generally unknown, and may influence within-winter movement rates. Methods We used Global Positioning System and acceleration data from 97 white-fronts during two winters to elucidate movement characteristics, model regional transition probabilities using a multistate model in a Bayesian framework, estimate regional energy expenditure, and determine behavior time-allocation influences on energy expenditure using overall dynamic body acceleration and linear mixed-effects models. We assess the linkages between wintering and breeding regions by evaluating the winter distributions for each breeding region. Results White-fronts exhibited greater daily movement early in the winter period, and decreased movements as winter progressed. Transition probabilities were greatest towards contemporary winter regions and away from historical wintering regions. Energy expenditure was up to 55% greater, and white-fronts spent more time feeding and flying, in contemporary wintering regions compared to historical regions. White-fronts subsequently summered across their entire previously known breeding distribution, indicating substantial mixing of individuals of varying breeding provenance during winter. Conclusions White-fronts revealed extreme plasticity in their wintering strategy, including high immigration probability to contemporary wintering regions, high emigration from historical wintering regions, and high regional fidelity to western regions, but frequent movements among eastern regions. Given that movements of white-fronts trended toward contemporary wintering regions, we anticipate that a wintering distribution shift eastward will continue. Unexpectedly, greater energy expenditure in contemporary wintering regions revealed variable energetic consequences of choice in wintering region and shifting distribution. Because geese spent more time feeding in contemporary regions than historical regions, increased energy expenditure is likely balanced by increased energy acquisition in contemporary wintering areas.

scholarly journals Smartphone GPS Locations of Students’ Movements to and from Campus

2021 ◽  
Vol 10 (8) ◽  
pp. 517
Author(s):  
Patricia K. Doyle-Baker ◽  
Andrew Ladle ◽  
Angela Rout ◽  
Paul Galpern
Keyword(s):  
Student Engagement ◽  
Environmental Factors ◽  
University Students ◽  
Regression Models ◽  
Bayesian Regression ◽  
Daily Movement ◽  
Campus Visit ◽  
Canadian City ◽  
Campus Activities ◽  
Ability And Willingness

For many university students, commuting to and from campus constitutes a large proportion of their daily movement, and therefore it may influence their ability and willingness to spend time on campus or to participate in campus activities. To assess student engagement on campus, we collected smartphone GPS location histories from volunteers (n = 280) attending university in a major Canadian city. We investigated how campus visit length and frequency were related to characteristics of the commute using Bayesian regression models. Slower commutes and commutes over longer distances were associated with more time spent but less frequent visits to campus. Our results demonstrate that exposure to campus life, and therefore the potential for student engagement, may relate not just to whether a student lives on or near campus, but also to urban environmental factors that interact to influence the commuting experience.

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