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Author: Lyman Nichols
Publisher:
ISBN:
Category : Mountain goat
Languages : en
Pages : 46
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Book Description
Author: Lyman Nichols
Publisher:
ISBN:
Category : Mountain goat
Languages : en
Pages : 46
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Book Description
Author: Lyman Nichols
Publisher:
ISBN:
Category : Habitat (Ecology)
Languages : en
Pages :
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Book Description
Reports of surveys carried out July 1976 through June 1979, the objective of which were to evaluate the accuracy of aerial goat surveys by fixed-wing aircraft and to develop a method of sexing and aging mountain goats applicable to aerial surveys.
Author: Warren B. Ballard
Publisher:
ISBN:
Category : Mammals
Languages : en
Pages : 21
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Book Description
Report of an investigation carried out, July 1982 through June 1983, to determine the daily variability of late summer and early fall aerial (fixed wing aircraft) Mountain goat (Oreamnos americanus) surveys.
Author: Department of the Interior
Publisher:
ISBN: 9781497350625
Category :
Languages : en
Pages : 62
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Book Description
We described the seasonal distribution of Geographic Position System (GPS)- collared mountain goats (Oreamnos americanus) in Mount Rainier, North Cascades, and Olympic National Parks to evaluate aerial survey sampling designs and provide general information for park managers.
Author:
Publisher:
ISBN:
Category : Mountain goat
Languages : en
Pages : 96
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Book Description
Author: Kevin S. White (Biologist)
Publisher:
ISBN:
Category : Aerial surveys
Languages : en
Pages : 46
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Book Description
Author: Jami J. Belt
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 49
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Book Description
Citizen science programs that use trained volunteers may be a cost-effective method for monitoring wildlife at large spatial and temporal scales. However, few studies have compared inferences made from data collected by volunteers to professionally collected data. In Glacier National Park (GNP), Montana, I assessed whether citizen science is a useful method to monitor mountain goat (Oreamnos americanus) populations. I compared estimates of mountain goat abundance by volunteers at 32 sites throughout GNP to estimates by biologists and raw counts from aerial surveys at a subset of 25 and 11 sites, respectively. I used multiple observer surveys to calibrate the indices of abundance for the effect of observer variation between volunteers and biologists. I used N-mixture models, which calculated detection probability through patterns of detection and non-detection to obtain estimates of abundance. Population estimates made by citizen science overlapped estimates by biologists and estimates from previous research. Density estimates from aerial surveys were lower, possibly due to imperfect detection during aerial surveys or due to violation of the assumption of population closure. Mean detection probability from multiple observer surveys for biologists was significantly higher and less variable than that of volunteers, but was not a suitable correction factor, because it was not consistent across all densities of mountain goats. Volunteer experience did not significantly influence detection probability or abundance estimates. Abundance estimates by volunteers were influenced by number of site visits. More frequent site visits balanced out lower detection probability by volunteers and resulted in abundance estimates that were less variable than those of biologists. When large spatial and temporal coverage can be achieved, citizen science can provide mountain goat population estimates that are statistically similar to those of biologists. However, neither estimates by volunteers or biologists had sufficient statistical power to detect a 30% decline in mountain goat population size over 10 years. Power by volunteers could be increased by reducing the number of sites and increasing surveys/site or by continuing monitoring over a longer time frame (i.e., 30 years). Citizen science programs can contribute to long term monitoring when properly designed.
Author: Elizabeth P. Flesch
Publisher:
ISBN:
Category : Mountain animals
Languages : en
Pages : 17
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Book Description
Citizen science provides a prime opportunity for wildlife managers to obtain low-cost data recorded by volunteers to evaluate species distribution models and address research objectives. Using mountain goat (Oreamnos americanus) location data collected through aerial surveys by professionals, ground surveys by professionals, and ground surveys by volunteers, we evaluated two mountain goat distribution models extrapolated across Waterton-Glacier International Peace Park. In addition, we compared mountain goat location data by observer and survey type to determine whether there were differences that affected extrapolated model evaluation. We found that all dataset types compared similarly to both mountain goat models. A mountain goat occupancy model developed in the Greater Yellowstone Area (GYA) was the most informative in describing mountain goat locations. We compared Spearman-rank correlations (rs) for occupancy probability bin ranks in the GYA model extrapolation and area-adjusted frequencies of mountain goat locations, and we found that all datasets had a positive correlation, indicating the model had useful predictive ability. Aerial observations had a slightly greater Spearman-rank correlation (rs = 0.964), followed by the professional ground surveys (rs = 0.946), and volunteer ground datasets (rs = 0.898). These results suggest that with effective protocol development and volunteer training, biologists can use mountain goat location data collected by volunteers to evaluate extrapolated models. We recommend that future efforts should apply this approach to other wildlife species and explore development of wildlife distribution models using citizen science.
Author:
Publisher:
ISBN:
Category : Mountain goat
Languages : en
Pages : 334
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Book Description
Author: Patricia Harper
Publisher:
ISBN:
Category : Mammal populations
Languages : en
Pages : 159
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Book Description
