Download or read book A Calving Ground Survey of the Hall Peninsula Caribou Herd June 1979 written by Tom Chowns and published by . This book was released on 1980 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a survey carried out in 1979 on the Hall Peninsula on Baffin Island in the Northwest Territories to discover the existence of previously unknown caribou calving grounds. The main calving grounds appeared to be at the head of Smith Channel in the vally north of Hamlen Bay and the Qamaniqjuaq Lake watershed.
Download or read book A Calving Ground Survey of the Hall Peninsula Caribou Herd written by and published by . This book was released on 1979 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes aerial surveys conducted in June 1979 over Hall Peninsula, southern Baffin Island, to document the location & extent of caribou calving areas. Survey methods are described and results are presented regarding numbers of caribou & calves observed, the areas where they were observed, and the geographic characteristics of those areas. Suspected calving areas are delineated and recommendations are made for further research to verify their boundaries and determine their significance.
Download or read book Wildlife Review written by and published by . This book was released on 1992 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calving Ground Survey South Baffin Caribou Herd June 1976 written by Land, Ellis and published by [Yellowknife] : N.W.T. Wildlife Service. This book was released on 1979 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calving Ground Survey South Baffin Caribou Herd written by R. Redhead and published by . This book was released on 1979 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of an aerial reconnaissance survey done in June 1976 to census the South Baffin caribou herd. During the transect surveys near Dewar Lakes, 185 caribou were seen and the first calves were seen June 6 west of Dewar Lakes.
Download or read book Bluenose Caribou Surveys 1978 1979 written by D. Brackett and published by . This book was released on 1982 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of aerial calving ground surveys of the Bluenose herd of barren-ground caribou (Rangifer tarandus groenlandicus) conducted May/June 1978-June 1979. Total population estimates were in 1978, 27,000 and in 1979, 34,500.
Download or read book Population Size of the Alaska Peninsula Caribou Herd written by Charles Irvine and published by . This book was released on 1976 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survey of the Calving Grounds of the Beverly Caribou Herd 1980 written by Anne Gunn and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of an aerial survey conducted June 1980 of the Beverly caribou (Rangifer tarandus groenlandicus) herd's calving grounds northwest of Great Bear Lake in the Northwest Territories to estimate the herds size.
Download or read book Survey of the Calving Grounds of the Beverly Caribou Herd 1980 written by A. Gunn and published by . This book was released on 1992 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of an aerial survey conducted June 1980 of the Beverly caribou (Rangifer tarandus groenlandicus) herd's calving grounds northwest of Great Bear Lake in the Northwest Territories to estimate the herds size.
Download or read book Survey of the Calving Grounds of the Beverly Caribou Herd 1980 written by Anne Gunn (Wildlife manager) and published by . This book was released on 1982 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of an aerial survey conducted June 1980 of the Beverly caribou (Rangifer tarandus groenlandicus) herd's calving grounds northwest of Great Bear Lake in the Northwest Territories to estimate the herds size.
Download or read book Calving Ground Survey of the Beverly Caribou Herd 1982 written by B. Stephenson and published by . This book was released on 1984 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of an aerial reconnaissance survey of the Beverly caribou (Rangifer tarandus groenlandicus) calving grounds carried out June 1982 in the central eastern Northwest Territories. Total population was estimated at 124,700.
Download or read book An Operations Guide to Barren ground Caribou Calving Ground Density Dispersion and Distribution Surveys Based on an Assessment of the June 2007 and 2008 Surveys Northwest Territories and Nunavut written by Kim Gordon Poole and published by . This book was released on 2014 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yearling Mortality in the Delta Caribou Herd written by James L. Davis (Wildlife biologist) and published by . This book was released on 1981 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Estimate of Breeding Females and Analyses of Demographics for the Bathurst Herd of Barren ground Caribou written by John Boulanger and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We conducted a calving ground photo survey of the Bathurst barren-ground caribou (Rangifer tarandus groenlandicus) herd from 3-8 June, 2012. The main objective was to obtain an estimate of breeding females that could be compared to estimates from previous similar surveys that have been conducted since 1986. Of particular interest was whether or not the herd had stabilized from the steep decline documented in the 2009 survey. Consistent with previous calving ground photographic survey methods, data from collared caribou and systematic reconnaissance surveys at ten km intervals in the calving ground area were used to delineate the core calving areas, to assess calving status, to allocate sampling to geographic strata of similar caribou density, and to time the photographic survey plane to coincide with the peak of calving. Unlike previous surveys, transect surveys were conducted at 5 km instead of 10 km intervals in the core calving area. Reconnaissance surveys revealed that the majority of breeding caribou were congregated in a relatively-small (914 km2) area with non-breeding caribou distributed in lower densities to the south. Based on collar movements and observed proportions of calves, it was determined that the peak of calving occurred on or about 5 June, 2012 and the photo plane survey was conducted on 6 June. Photo plane survey effort (transect spacing) was stratified into high- and medium-density blocks with the highest coverage (79.1%) in the high-density stratum where the majority of breeding caribou were. The higher level of coverage allowed an adequate number of lines (22) to be placed in the stratum as a means of offsetting potential variance caused by clumped distribution of caribou. Survey conditions were ideal with zero cloud cover, minimal winds and minimal snow cover. Two lower-density strata were also surveyed with visual strip-transect methods. Ground-based composition surveys were conducted from 6-8 June to estimate the proportion of breeding caribou in each of the strata. Survey results revealed that 87.4% of caribou on the core calving ground were within the high-density stratum (914 km2) with 8% occurring in the medium density stratum (644 km2) and the rest in the two low-density strata. The estimate of 1+-yr-old caribou on the core calving ground was 24,166 (SE=1,853.6, Cl=20,310-28,020) caribou. Using the results of the ground composition survey to adjust this number for breeding females, the estimate of breeding females was 15,935 (SE=1,407.2, Cl=13,009-18,861). The estimate of breeding females was very precise with a coefficient of variation (CV) of 8.8%. Comparison of this estimate with the previous estimate of breeding females from 2009 of 16,649 (SE=2, 181, 95% Cl=12, 188-21,110) suggests that the breeding female segment of the herd declined slightly, though not significantly. The rate of decline was much lower than between the 2006 and 2009 calving ground surveys. Results from a data-driven demographic modelling exercise suggest that adult female survival rate was 0.78 (Cl range 0.75-0.82) in 2012, which is still below levels needed for a stable herd. A conservative bull-dominated harvest strategy with minimal cow harvest is recommended to minimize adult cow mortality. An increase in the number of radio collars on the herd would greatly assist in managing and monitoring this herd, including more reliable estimates of adult female survival rate"--Pages iii-iv.
Download or read book Beverly Calving Ground Survey June 2 14 1987 written by Douglas C. Heard and published by . This book was released on 1990 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a strip transect census of the Beverly caribou (Rangifer tarandus groenlandicus) herd carried out in June 1987 on the herds calving grounds in the central eastern Northwest Territories. Total population was estimated at 49,100, which was lower than estimates obtained in 1984.
Download or read book Beverly Calving Ground Survey June 2 14 1988 written by Douglas C. Heard and published by . This book was released on 1990 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a stratified transect strip survey in which caribou were counted on aerial photographs. The survey was carried out on the Beverly caribou (Rangifer tarandus groenlandicus) herd in June 1988 on the herds calving grounds in the central eastern Northwest Territories. Total population was estimated at about 108,000 caribou indicating that the herd is no longer increasing as appeared to be the case in 1984.
Download or read book An Estimate of Breeding Females and Analyses of Demographics for the Bluenose East Herd of Barren ground Caribou written by John Boulanger and published by . This book was released on 2016 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report details the calving ground photo survey of the Bluenose-East caribou herd conducted during June of 2015 in Nunavut (NU), near Kugluktuk, NU. The main objective was to obtain an estimate of breeding females that could be compared to estimates from previous calving ground surveys in 2010 and 2013. Consistent with previous calving ground photographic surveys, data from collared caribou and systematic reconnaissance survey flight lines flown at 10 km intervals on the calving grounds were used to delineate the core calving area, to assess calving status, to allocate sampling to geographic strata of similar caribou density, and to time the photographic survey plane to coincide with the peak of calving. Based on collar movements and observed proportions of calves, it was determined that the peak of calving would occur soon after June 5th and the photo plane survey was flown on June 5th. Photo plane survey effort (transect spacing) was allocated into a single high density block (stratum) where the majority of breeding females resided. Three other strata which had lower densities of breeding caribou were also surveyed visually on June 5th. A double observer method was used to estimate and correct for sightability of caribou from visual surveys. Survey conditions were favorable on June 5th with high ceilings and low snow cover. The estimate of 1+ year old caribou on the core calving ground was 38,041 (95% Confidence Interval (CI) =33,569-42,513) caribou. Using the results of the ground composition survey to adjust this number for breeding females, the estimate of breeding females was 17,396 (CI=15,088-19,704). The estimate of breeding females was very precise with a coefficient of variation of 6.3%. The pregnancy rate of females, as indexed by the proportion of adult females classified as breeding was lower in 2015 than the previous survey in 2013. For this reason, an alternative estimator that used an estimate of total adult females (breeders and non- breeders; 27,246 (CI=24,172-30,320) divided by the proportion females in the herd (from fall composition surveys) was used to estimate herd size. The resulting estimate of herd size was 38,592 (CI=33,859-43,325). Comparison of 2013 and 2015 adult female numbers indicate an annual rate of decline of 20% (CI=7-32%). Assessment of survey issues suggested that this difference could not be attributed to differences in surveys or bias. Assessment of movement of collared females between the Bluenose-East and surrounding herds from 2010-2015 documented minimal movement of collared cows to neighbouring herds. Demographic modeling that used composition, collared caribou, and survey data estimated that cow survival rate was low (0.71, CI=0.69-0.72) and calf recruitment has declined. These factors along with harvest pressure have led to the ongoing decline of the herd. We suggest that continued monitoring and proactive management of harvest with a shift from mostly cows to mostly bulls is recommended. In addition, continued monitoring of calving ground distribution and spring productivity should be conducted to allow ongoing monitoring of herd status"--Pages iii-iv .
