scholarly journals Movements of boreal caribou in the James Bay lowlands

Rangifer ◽  
2011 ◽  
pp. 63-73 ◽  
Author(s):  
Megan E. Hazell ◽  
Mark E. Taylor
Keyword(s):  
Home Range ◽  
Site Fidelity ◽  
Rangifer Tarandus ◽  
Satellite System ◽  
Home Range Size ◽  
James Bay ◽  
Daily Movement ◽  
Gps Collars ◽  
Wintering Areas ◽  
James Bay Lowlands

Little is known about the movements and home range of boreal woodland caribou (Rangifer tarandus) in the James Bay lowlands, northern Ontario. Our preliminary study involves the use of GPS collars with Argos satellite system uplink to monitor movements of caribou and 10 animals were collared in December 2004. Animals appeared to have reduced rates of daily movement starting approximately in mid to late December and stretching until late February. Similarly, most animals appeared to have very reduced rates of movement from the beginning of May to the end of June indicating that this is their calving period (includes both parturition as well as the period immediately after parturition). Thus the over-wintering range was assumed to be where the animals were from mid-December to late February and the calving range was defined as the area they were in from the beginning of May to the end of June. Individual home-ranges were typically large, the mean 90% kernel home range for 2004 - 2007 was 41 579 km2. Over wintering areas and calving areas were small when compared to annual home-range size and reflect the reduced rates of movement during these time periods. Female caribou show site fidelity to calving grounds, using the same core areas year after year. However, the same level of site fidelity was not observed in over-wintering areas. The caribou in the James Bay lowlands display behaviours that are characteristic of both the forest-tundra and forest-forest ecotypes which may warrant the reconsideration of the validity of proposed ecotypes with respect to protection under species-at-risk legislation.

scholarly journals Movements of boreal caribou in the James Bay lowlands

Rangifer ◽  
2007 ◽  
Vol 27 (4) ◽  
pp. 247
Author(s):  
M. E. Taylor ◽  
M. Ruthven
Keyword(s):  
Home Range ◽  
Rangifer Tarandus ◽  
Satellite System ◽  
Late Winter ◽  
Woodland Caribou ◽  
James Bay ◽  
Regional Environment ◽  
North West ◽  
Gps Collars ◽  
James Bay Lowlands

Little is known about the movements and home range of boreal woodland caribou (Rangifer tarandus) in the James Bay lowlands. As part of ongoing studies to measure the potential effects of the De Beers Victor Project on the local and regional environment, a study of woodland caribou was initiated. This study involves the use of GPS collars with Argos satellite system uplink to monitor movements of caribou. Additional aerial surveys of a study area (22 000 km2) in the early and late winter are used to provide an overall indication of the usage of the area around Victor by caribou and other wildlife. Animals were collared in December 2004 at varying distances from the Victor site (max. 60 km). Preliminary data for 2005 has been analysed. During 2005, some animals moved large distances >480 km from Victor, while others were relatively sedentary. One animal (from the total of ten) was harvested by a hunter in March. The only obvious trend in movement patterns occurred in the middle of November when all the collared animals began to move north-west. The daily distances moved in November were much greater (10-20 km/d) than earlier in the year (0.5-10 km/d) and by mid December they were all north and west of their locations when first collared, in some cases more than 480 km to the northwest of their initial capture sites. The minimum annual distances covered for the nine remaining animals ranged between 900 and 1500 km. The home ranges of the caribou ranged from 8000 km2 to 56 380 km2 with a mean home range of 23 434 km2, which is much greater than boreal woodland caribou in other parts of Ontario.

scholarly journals Green morays (Gymnothorax funebris) have sedentary ways in mangrove bays, but also ontogenetic forays to reef enclaves

2021 ◽  
Author(s):  
Matthew S. Kendall ◽  
Laughlin Siceloff ◽  
Ashley Ruffo ◽  
Arliss Winship ◽  
Mark E. Monaco
Keyword(s):  
Home Range ◽  
Site Fidelity ◽  
Home Range Size ◽  
Range Size ◽  
Caribbean Region ◽  
History Of ◽  
High Site ◽  
Single Night ◽  
Exploratory Movements ◽  
Moray Eel

AbstractSurprisingly, little is known about basic life history of the largest moray eel species in the Caribbean region, the green moray eel (Gymnothorax funebris). Sixteen eels were captured from the mangrove fringe in multiple bays on St. Croix, USVI, implanted with coded acoustic transmitters, and their movements were tracked for up to 11 months using an array of 37 stationary acoustic receivers. They exhibited high site fidelity in the bays during their residence, using the same general parts of individual bays and did not switch bays except for one individual. There was no relationship between eel size (mean TL = 83 cm, range = 54–126 cm) and home range size (mean area of 95% KUD = 5.8 ha ± 0.7 SE). Most individuals were more frequently detected at night than during the day suggesting greater nocturnal activity. Several of the larger eels (mean TL = 93 cm ± 5.9 SE) showed clear and permanent emigration tracks out of the mangrove estuary to coral reef habitats offshore. For some individuals, these habitat shifts were preceded by exploratory movements away from the eel’s typical home range the night before emigration. All final emigration events took place nocturnally, happened during a single night, and occurred during months from December to May. Mean emigration speed was 3.4 km/h. This study is the first documentation of an ontogenetic habitat shift in moray eels, as well as the first determination of home range size for this species and their site fidelity in mangrove habitats.

scholarly journals Variation in winter site fidelity within and among individuals influences movement behavior in a partially migratory ungulate

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0258128
Author(s):  
Timothy J. Fullman ◽  
Brian T. Person ◽  
Alexander K. Prichard ◽  
Lincoln S. Parrett
Keyword(s):  
Site Fidelity ◽  
Rangifer Tarandus ◽  
First Passage Time ◽  
Cost Benefit ◽  
Movement Behavior ◽  
Long Distance ◽  
Directed Movement ◽  
Movement Trajectories ◽  
Wintering Areas ◽  
Wintering Area

Many animals migrate to take advantage of temporal and spatial variability in resources. These benefits are offset with costs like increased energetic expenditure and travel through unfamiliar areas. Differences in the cost-benefit ratio for individuals may lead to partial migration with one portion of a population migrating while another does not. We investigated migration dynamics and winter site fidelity for a long-distance partial migrant, barren ground caribou (Rangifer tarandus granti) of the Teshekpuk Caribou Herd in northern Alaska. We used GPS telemetry for 76 female caribou over 164 annual movement trajectories to identify timing and location of migration and winter use, proportion of migrants, and fidelity to different herd wintering areas. We found within-individual variation in movement behavior and wintering area use by the Teshekpuk Caribou Herd, adding caribou to the growing list of ungulates that can exhibit migratory plasticity. Using a first passage time–net squared displacement approach, we classified 78.7% of annual movement paths as migration, 11.6% as residency, and 9.8% as another strategy. Timing and distance of migration varied by season and wintering area. Duration of migration was longer for fall migration than for spring, which may relate to the latter featuring more directed movement. Caribou utilized four wintering areas, with multiple areas used each year. This variation occurred not just among different individuals, but state sequence analyses indicated low fidelity of individuals to wintering areas among years. Variability in movement behavior can have fitness consequences. As caribou face the pressures of a rapidly warming Arctic and ongoing human development and activities, further research is needed to investigate what factors influence this diversity of behaviors in Alaska and across the circumpolar Arctic.

scholarly journals Movements of Subadult Male Grizzly Bears, Ursus arctos, in the Central Canadian Arctic

2004 ◽  
Vol 118 (2) ◽  
pp. 239 ◽  
Author(s):  
Robert J. Gau ◽  
Philip D. McLoughlin ◽  
Ray Case ◽  
H. Dean Cluff ◽  
Robert Mulders ◽  
...  
Keyword(s):  
Home Range ◽  
Long Range ◽  
Rangifer Tarandus ◽  
Ursus Arctos ◽  
Canadian Arctic ◽  
Grizzly Bears ◽  
Home Ranges ◽  
Adult Males ◽  
Subadult Male ◽  
Daily Movement

Between May 1995 and June 1999, we equipped eight subadult male (3-5 yrs old) Grizzly Bears (Ursus arctos) with satellite radio-collars within a study area of 235,000 km2, centred 400 km northeast of Yellowknife, Northwest Territories, Canada. Subadult male annual home ranges were extraordinarily large (average = 11,407 km2, SE = 3849) due, in part, to their movement's occasional linear directionality. We believe their long-range linear movements may reflect some individuals tracking the migration of Caribou (Rangifer tarandus). Seasonal daily movement patterns were similar to adult males that were previously reported. The areas used by these bears are the largest ranges reported for any Grizzly Bears and the scale of their movements may put individual bears in contact with humans even when developments are hundreds of kilometres from the central home range of an animal.

Home-range studies in a reintroduced brush-tailed rock-wallaby (Petrogale penicillata) population in the Grampians National Park, Victoria

2011 ◽  
Vol 33 (2) ◽  
pp. 128 ◽  
Author(s):  
Jenny Molyneux ◽  
David A. Taggart ◽  
Anthony Corrigan ◽  
Sean Frey
Keyword(s):  
Home Range ◽  
National Park ◽  
Site Fidelity ◽  
Home Range Size ◽  
Range Size ◽  
Local Extinction ◽  
Home Ranges ◽  
Radio Tracking ◽  
Western Victoria ◽  
Species Ecology

In 2008, after 9 years of presumed local extinction, brush-tailed rock-wallabies (Petrogale penicillata) were reintroduced at Moora Moora Creek in the Grampians National Park, western Victoria. Since little is known about this species in Victoria, the reintroduction presented an important opportunity to gain information on the species’ ecology. Radio-tracking was undertaken and home range determined for three individuals released 11 months before this study and a further five individuals that were released at the commencement of the study in October 2009. Home-range size showed little variation amongst individuals, with a mean overall home range of 26 ha (±1.69, s.e.) and a mean core home range of 2.5 ha (±0.24, s.e.). Newly reintroduced individuals showed higher levels of association with wallabies from the same release and greater site fidelity when known conspecifics were close. Within 5 months of release, newly reintroduced animals showed home ranges similar in both size and distribution to those of animals released 11 months prior.

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.

Spacing patterns and territoriality of the stone marten

1997 ◽  
Vol 75 (12) ◽  
pp. 1966-1971 ◽  
Author(s):  
P. Genovesi ◽  
I. Sinibaldi ◽  
L. Boitani
Keyword(s):  
Home Range ◽  
Social Interactions ◽  
Site Fidelity ◽  
Influencing Factor ◽  
Central Italy ◽  
Home Range Size ◽  
Home Ranges ◽  
Stone Marten ◽  
Martes Foina ◽  
Social Patterns

Sixteen stone martens (Martes foina) were intensively radio-tracked in central Italy in order to assess their spacing patterns. Home-range sizes and distances travelled per night were analysed with respect to sex, age, season, and habitat. Intrasexual territoriality is confirmed for the species; home-range edges appeared to be determined by the dispersion of neighbours' territories. Home-range size was positively correlated with the presence of woodland (less abundant and more dispersed resources). Males travelled longer distances than females, although home-range sizes did not differ significantly by sex; males did not move more during the rutting season than in other seasons. Subadults were tolerated by adults for varying periods, then in some cases they started an exploring phase before settling into a vacant territory. Stone martens' spacing patterns were affected by sex, age, social interactions, and resources. In particular, social patterns appear to be a key influencing factor, as territoriality, parental behaviour, mating interactions, and dispersal of young can account for site fidelity, dispersion of home ranges, and distance travelled. In particular, our data indicate the importance of the extended relationship between the mating pair, which is probably related to male parental investment, in determining the spacing patterns of the species.

Movements, space use and site fidelity of translocated and resident mule deer (Odocoileus hemionus)

2019 ◽  
Vol 46 (6) ◽  
pp. 509 ◽  
Author(s):  
David C. Smedley ◽  
Madelon van de Kerk ◽  
Brock R. McMillan ◽  
Kent R. Hersey ◽  
Jericho C. Whiting ◽  
...  
Keyword(s):  
Home Range ◽  
Site Fidelity ◽  
Mule Deer ◽  
Space Use ◽  
Odocoileus Hemionus ◽  
Home Range Size ◽  
Winter Range ◽  
Radio Transmitters ◽  
High Site ◽  
Resident Female

Abstract ContextTranslocation of wildlife has become common practice for wildlife managers charged with management of animals on increasingly modified landscapes. Mule deer (Odocoileus hemionus) is a species of great interest to the public in western North America, and individuals of this species have been translocated several times, but little has been done to document the outcomes of those translocations. AimOur objective was to evaluate the movement, space use and site fidelity of translocated female mule deer in comparison with resident female deer in Utah, USA. MethodsIn January and March 2013, 102 translocated and 50 resident female mule deer were captured and fitted with radio-transmitters. Movement distances, home range sizes and seasonal range sizes were compared, as well as site fidelity between translocated and resident deer. Key resultsMean distance moved and mean annual home range size were significantly larger for translocated than resident deer in 2013, but not in 2014. Translocated deer demonstrated high site fidelity to their release areas. In total, 75% of surviving deer returned during the fall (September–November) migration to winter range within 7km of release sites. ConclusionsOur results indicate that home range sizes and movements of translocated deer are larger than those of resident deer during the first year after release, but during the second year after release, home range sizes and movements of translocated deer are similar to those of resident deer. ImplicationsThe similar home range sizes and movements of translocated and resident deer >1 year after release, as well as the high site fidelity we observed, suggests that translocation is a strategy managers could use to establish or augment populations of mule deer on winter range.

scholarly journals Home range, movements, and denning chronology of the Grizzly Bear (Ursus arctos) in west-central Alberta

2014 ◽  
Vol 128 (3) ◽  
pp. 223 ◽  
Author(s):  
Karen Graham ◽  
Gordon B. Stenhouse
Keyword(s):  
Home Range ◽  
Ursus Arctos ◽  
Home Range Size ◽  
Grizzly Bears ◽  
Grizzly Bear ◽  
Adult Males ◽  
Gps Collars ◽  
Recovery Planning ◽  
Adult Females ◽  
West Central

An understanding of the natural history of the Grizzly Bear (Ursus arctos) is important for recovery planning. We present data on home range size, movements and denning chronology collected using Global Positioning System (GPS) collars on Grizzly Bears in west-central Alberta. Mean annual kernel estimates for adult (1034 ± 656 (SD) km2) and subadult (1298 ± 1207 km2) males were larger than those for females with cubs of the year (213 ± 212 km2) and lone adult females (337 ± 176 km2) but not different from sub-adult females, females with yearlings, or females with ≥ 2-yr old cubs (P > 0.05). Mean rates of movement among female age–reproductive classes were different from each other (Z9 < 2.70, P > 0.05) but not different from sub-adult males (Z9 < 2.70, P > 0.05). Rates of movement of adult males were significantly different only from those of females with cubs of the year (Z9 = 3.94, P = 0.001). The greatest amount of movement occurred in June and the least in October. Bears traveled fastest in the morning and evening and slowest at night. Pregnant females had the longest denning period (175 days, ± 16 days SD). No difference was detected in denning duration among the remaining five age–sex–reproductive classes (P > 0.05). GPS collars provided large location datasets from which accurate home range estimates, hourly movement rates, and precise denning dates were determined. Examining similarities and differences in the basic biology of Grizzly Bears from various locations will improve our understanding of the plasticity of this species and the potential impacts of habitat and climate change.

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