Measurement of non-circular home range

Jennrich, Robert I.; Turner, Frederick

doi:10.1016/0022-5193(69)90002-2

Cited by 607 publications

(317 citation statements)

References 8 publications

Supporting

Mentioning

303

Contrasting

Unclassified

Order By: Relevance

“…As in many other areas of research, data concerning space use and movement patterns often are easy to gather (or appear to be easy to collect) but difficult to interpret. Theoretical approaches are numerous (Anderson, 1982;Cooper, 1978;Ford & Krumme, 1979;Hayne, 1949;Heezen & Tester, 1967;Jennrich& Turner, 1969;Koeppl, Slade, & Hoffmann, 1975Metzgar & Sheldon, 1974;Mohr, 1947;Mohr & Stumpf, 1966;Rasmussen, 1980;Schoener, 1981;Siniff & Jessen, 1969;Stickel, 1954;van Winkle, 1975), but the "correct" method of analysis is closely related to the questions being asked and to the method used to generate the data; there does not appear to be a right or a wrong way to analyze space use or movement patterns.…”

mentioning

confidence: 99%

“…Furthermore, as Mohr (1947) noted, large ranges usually result in reduced accuracy of movement estimates. With respect to sample size, it generally appears that as the number oflocations increases, estimated home range area also increases until an asymptote is reached (Anderson, 1982;Bowen, 1982;Fritts & Mech, 1981;Jennrich & Turner, 1969;Koeppl et al, 1977;Mares, Willig,& Bitar, 1980;Metzgar & Sheldon, 1974;Odum & Kuenz1er, 1955;Parish & Kruuk, 1982;Rose, 1982;Smith, Cary, & Rongstad, 1981;Stickel, 1954;Waser & Floody, 1974;Waser & Wiley, 1979;Woodruff & Keller, 1982), and additional sampling adds proportionately smaller increases in area to the estimated home range size.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Simulation analyses of space use: Home range estimates, variability, and sample size

Bekoff

Mech

1984

Behavior Research Methods, Instruments, & Computers

View full text Add to dashboard Cite

Simulations of space use by animals were run to determine the relationship among home range area estimates, variability, and sample size (number of locations). As sample size increased, home range size increased asymptotically, whereas variability decreased among mean home range area estimates generated by multiple simulations for the same sample size. Our results suggest that field workers should ascertain between 100 and 200 locations in order to estimate reliably home range area. In some cases, this suggested guideline is higher than values found in the few published studies in which the relationship between home range area and number of locations is addressed. Sampling differences for small species occupying relatively small home ranges indicate that fewer locations may be sufficient to allow for a reliable estimate of home range. Intraspecific variability in social status (group member, loner, resident, transient), age, sex, reproductive condition, and food resources also have to be considered, as do season, habitat, and differences in sampling and analytical methods. Comparative data still are needed.The way animals use space is of practical and theoretical interest to a wide variety of scientists, including those studying (1) relationships between behavior, age, sex, and spacing patterns, (2) resource distribution as it affects space use, (3) the relationship between metabolic requirements and home range size, and (4) space requirements for purposes of control or reintroduction of "problem" or endangered species

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Simulation analyses of space use: Home range estimates, variability, and sample size

Bekoff

Mech

1984

Behavior Research Methods, Instruments, & Computers

View full text Add to dashboard Cite

show abstract

“…During the study period the number of collared ani¬ mals per 5-day period ranged from 9 to 21 animals. For each five day period, we generated a JennrichTurner ellipse (JTE), including centre of mass, for all individual animals (Jennrich & Turner, 1969). We then calculated the distance from the centre of mass to each individual animal location.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of satellite collar sample size requirements for mitigation of low-level military jet disturbance of the George River caribou herd

Otto¹,

Simon²,

Couturier³

et al. 2003

Ran

View full text Add to dashboard Cite

Wildlife radio-telemetry and tracking projects often determine a priori required sample sizes by statistical means or default to the maximum number that can be maintained within a limited budget. After initiation of such projects, little attention is focussed on effective sample size requirements, resulting in lack of statistical power. The Department of National Defence operates a base in Labrador, Canada for low level jet fighter training activities, and maintain a sample of satellite collars on the George River caribou (Rangifer tarandus caribou) herd of the region for spatial avoidance mitiga¬ tion purposes. We analysed existing location data, in conjunction with knowledge of life history, to develop estimates of satellite collar sample sizes required to ensure adequate mitigation of GRCH. We chose three levels of probability in each of six annual caribou seasons. Estimated number of collars required ranged from 15 to 52, 23 to 68, and 36 to 184 for 50%, 75%, and 90% probability levels, respectively, depending on season. Estimates can be used to make more informed decisions about mitigation of GRCH, and, generally, our approach provides a means to adaptively assess radio collar sam¬ ple sizes for ongoing studies.

show abstract

“…Shifts in preferred temperature may occur in response to such changes in physical conditon as molting, injury, or parasitism (Kitchell, 1969). Finally, some species appear to be without TB preference for all activities (Ballinger et ai., 1970 (Fitch, 1954;Tinkle, 1962;Jorgenson and Tanner, 1963;Johnson, 1965;Jennrich and Turner, 1969;and Turner et ai., 1969).…”

Section: Wiszizenimentioning

confidence: 99%

Thermal Ecology and Movement in the Leopard Lizard, Gambelia Wislizeni, Baird and Girard

Abts¹

2000

View full text Add to dashboard Cite

Thermal ecol~gy and movement of the Leopard Lizard, G. wistizeni were studied at Frog Spring, adjacent to the Alvord Desert, and at various locations throughout the Alvord Basin.Seasonal activity is known to oc~ur from early May to mid-October, but abundance. gradually decreases after late July. During favorable late spring, and summer 2 weather lizards exhibit a bimodal pattern of diel activity with some activity occurring at all hours of the day between 0600 and 1800 H. At other times activity was unimodal. Emergence was apparently largely temperature dependent and did not occur until sand temperature approximated 21°C. Retreat appeared to be temperature independent, and was initiated by exogenous or end~genous stimuli at sand temperatures often above body temperatures acceptable for normal activity. For the period of study, juveniles exhibited diel activity patterns similar to adults, Iand were found during all hours in which adults were en-

show abstract

Measurement of non-circular home range

Cited by 607 publications

References 8 publications

Simulation analyses of space use: Home range estimates, variability, and sample size

Simulation analyses of space use: Home range estimates, variability, and sample size

Evaluation of satellite collar sample size requirements for mitigation of low-level military jet disturbance of the George River caribou herd

Thermal Ecology and Movement in the Leopard Lizard, Gambelia Wislizeni, Baird and Girard

Contact Info

Product

Resources

About