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| Abstract or Summary |
- Vegetation structure quantified by light detection and ranging (LiDAR) can improve
understanding of wildlife occupancy and species-richness patterns. However, there is
often a time lag between the collection of LiDAR data and wildlife data. We investigated
whether a time lag between the LiDAR acquisition and field-data acquisition
affected mapped wildlife distributions ranging from an individual species distribution
to total avian species richness in a conifer forest. We collected bird and LiDAR data in
2009 across a 20,000 ha forest in northern Idaho. Using the 2009 LiDAR data, we
modelled the probability of occurrence for the brown creeper (Certhia americana).
Using the same 2009 LiDAR data, we additionally modelled total avian species
richness and richness of three different bird nesting guilds (ground/understory, mid/upper canopy and cavity). We mapped brown creeper occupancy probability and
species richness using the 2009 models, and then compared these maps with maps
based on the same models applied to a 2003-LiDAR dataset. A prior study identified
areas harvested between 2003 and 2009. There was on average a 5% absolute decrease
in mapped probabilities of brown creeper occurrence in non-harvest areas between
2003 and 2009. Species richness changed by less than one species in all cases within
non-harvest areas between the 2003 and 2009 maps. Although these comparisons were
statistically significant at the p < 0.0001 level, it is likely that the high number of map
cells (~480,000) influenced this result. Similar patterns between our 2003 and 2009
maps in non-harvest areas for this suite of avian responses suggests that a 6-year
difference between field-data collection and LiDAR-data collection has a minimal
effect on mapped avian patterns in an undisturbed coniferous forest. However, because
this is one case study in one ecosystem, additional work examining the effect of
temporal lags between LiDAR and field-data collection on mapping wildlife distributions
is warranted in additional ecosystems.
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| Citation |
- Vierling, K. T., Swift, C. E., Hudak, A. T., Vogeler, J. C., & Vierling, L. A. (2014). How much does the time lag between wildlife field-data collection and LiDAR-data acquisition matter for studies of animal distributions? A case study using bird communities. Remote Sensing Letters, 5(2), 185-193. doi:10.1080/2150704X.2014.891773
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| Additional Information |
- description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2014-06-13T18:30:05Z
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Previous issue date: 2014-03-07
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