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Estimating population densities of small mammals (< 100 g) has typically been carried out by intensive livetrapping, but this technique may be stressful to animals and the effort required is considerable. Here, we used camera traps to detect small mammal presence and assessed if this provided a feasible alternative to livetrapping for density estimation. During 2010-2012, we used camera trapping in conjunction with mark-recapture livetrapping to estimate the density of northern red-backed voles (Myodes rutilus) and deer mice (Peromyscus maniculatus) in the boreal forest of Yukon, Canada. Densities for these 2 species ranged from 0.29 to 9.21 animals/ha and 0 to 5.90 animals/ha, respectively, over the course of this...
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This dataset contains the point-transect distance sampling records of Hawaii Akepa collected at Hakalau Forest National Wildlife Refuge between 1987 and 2017. These data include the survey point locations, observer details, time of day, and sampling conditions during the counts. In addition, the data include the elevation and alliance level habitat classification at the survey points. Provided here in the data release is the single tabular dataset containing the project’s bird and habitat data.
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This data release contains the point-transect distance sampling records of Hawaii Akepa collected at Hakalau Forest National Wildlife Refuge in 2002, including survey point locations, distance to detected birds, number of detected birds, elevation, and alliance-level habitat classification. This data release consists of two tabular datasets, one that contains distances (described herein) and the other that contains locations, elevation, habitat and counts.
Estimating population densities of small mammals (< 100 g) has typically been carried out by intensive livetrapping, but this technique may be stressful to animals and the effort required is considerable. Here, we used camera traps to detect small mammal presence and assessed if this provided a feasible alternative to livetrapping for density estimation. During 2010-2012, we used camera trapping in conjunction with mark-recapture livetrapping to estimate the density of northern red-backed voles (Myodes rutilus) and deer mice (Peromyscus maniculatus) in the boreal forest of Yukon, Canada. Densities for these 2 species ranged from 0.29 to 9.21 animals/ha and 0 to 5.90 animals/ha, respectively, over the course of this...
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This dataset contains the point-transect distance sampling records of Hawaii Akepa collected at Hakalau Forest National Wildlife Refuge in 2002, including survey point locations, distance to detected birds, number of detected birds, elevation, and alliance-level habitat classification. This data release consists of two tabular datasets, one that contains distances and the other that contains locations, elevation, habitat and counts.
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In this study, we create and evaluate a protocol to estimate the density, which can be used to estimate the abundance of terrestrial sound-producing animals from single automatic sound recorders. The protocol uses cue rates from the target species as well as sampling conditions and an estimate of the distance of the individual to the recorder based on the power of the sound. We applied our protocol to estimate the density of two Hawaiian forest bird species (Hawaiˊi ˊamakihi, Chlorodrepanis virens and ˊōmaˊo, Myadestes obscurus) on the island of Hawaiˊi, USA. We validate our approach by comparing our density estimations with others calculated at the same stations using a traditional point-transect distance sampling...
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This data release contains the point-transect distance sampling records of forest bird survey collected in the Kohala Mountain complex in 2017, including survey point IDs, distance to detected birds, sampling conditions, ohia phenology, habitat classifications and background noise levels. This data release consists of one tabular dataset.
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This data release contains the point-transect distance sampling records of Hawaii Akepa collected at Hakalau Forest National Wildlife Refuge in 2002, including survey point locations, distance to detected birds, number of detected birds, elevation, and alliance-level habitat classification. This data release consists of two tabular datasets, one that contains distances and the other that contains locations, elevation, habitat and counts (described herein).
    map background search result map search result map Raw acoustic data files for density estimation in Hakalau Forest NWR, Hawaiˊi, data collected in 2015 Acoustic data for Hawaiˊi ˊamakihi (Chlorodrepanis virens) in Hakalau Forest NWR, Hawaiˊi, data collected in 2015 Acoustic call data for ˊōmaˊo (Myadestes obscurus) in Hakalau Forest NWR, Hawaiˊi, data collected in 2015 Acoustic song data for ˊōmaˊo (Myadestes obscurus) in Hakalau Forest NWR, Hawaiˊi, data collected in 2015 Human-based point-transect data for Hawaiˊi ˊamakihi (Chlorodrepanis virens) and ˊōmaˊo (Myadestes obscurus) in Hakalau Forest NWR, Hawaiˊi, data collected in 2015 Hakalau Forest National Wildlife Refuge Hawaii Akepa point-transect surveys, 1987-2017 Hakalau Forest National Wildlife Refuge, Hawaii Akepa point-transect survey, 2002 Hakalau Forest National Wildlife Refuge, Hawaii, Hawaii Akepa distance data, 2002 Hakalau Forest National Wildlife Refuge, Hawaii, Hawaii Akepa point-transect data, 2002 Hawaii Island Kohala Mountain complex forest bird survey, 2017 Hakalau Forest National Wildlife Refuge Hawaii Akepa point-transect surveys, 1987-2017 Hakalau Forest National Wildlife Refuge, Hawaii Akepa point-transect survey, 2002 Hakalau Forest National Wildlife Refuge, Hawaii, Hawaii Akepa distance data, 2002 Hakalau Forest National Wildlife Refuge, Hawaii, Hawaii Akepa point-transect data, 2002 Hawaii Island Kohala Mountain complex forest bird survey, 2017