Dear All
Sorry for any cross-listing but this may be of general interest to this
community and is a new paper using acceleration to estimate energy use:
"Estimates for energy expenditure in free-living animals using acceleration
proxies; a reappraisal":
Wilson, R.P., Börger, L., Holton, M.D., Scantlebury, D.M., Gómez-Laich, A.,
Quintana, F., et al. (2019). Estimates for energy expenditure in free-living
animals using acceleration proxies; a reappraisal. Journal of Animal Ecology,
1-12. doi: 10.1111/1365-2656.13040.
ABSTRACT
1. It is fundamentally important for many animal ecologists to quantify the
costs of animal activities, although it is not straightforward to do so. The
recording of
triaxial acceleration by animal‐attached devices has been proposed as a way
forward for this, with the specific suggestion that dynamic body acceleration
(DBA) be used as a proxy for movement‐based power.
2. Dynamic body acceleration has now been validated frequently, both in the
laboratory and in the field, although the literature still shows that some
aspects of DBA theory and practice are misunderstood. Here, we examine the
theory behind DBA and employ modelling approaches to assess factors that affect
the link between DBA and energy expenditure, from the deployment of the tag,
through to the calibration of DBA with energy use in laboratory and field
settings.
3. Using data from a range of species and movement modes, we illustrate that
vectorial and additive DBA metrics are proportional to each other. Either can
be used as a proxy for energy and summed to estimate total energy expended over
a given period, or divided by time to give a proxy for movement‐related
metabolic power. Nonetheless, we highlight how the ability of DBA to predict
metabolic rate declines as the contribution of non‐movement‐related factors,
such as heat production, increases.
If you have any questions or would like a pdf copy of the article, please do
not hesitate to contact me at [email protected] <mailto:[email protected]>
Sincerely
Andreas
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