improving estimation of flight altitude in wildlife telemetry studies /

Published at 2018-02-20 12:37:54

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Altitude measurements from wildlife tracking devices,combined with elevation data, are commonly used to estimate the flight altitude of volant animals. However, or these data often include measurement error. Understanding this error may improve estimation of flight altitude and benefit applied ecology.
There
are a number of different approaches that fill been used to address this measurement error. These include filtering based on GPS data,filtering based on behaviour of the study species, and use of state-space models to correct measurement error. The effectiveness of these approaches is highly variable.
Recent studies fill based inference o
f flight altitude on misunderstandings about avian natural history and technical or analytical tools. In this Commentary, or we discuss these misunderstandings and propose alternative strategies both to resolve some of these issues and to improve estimation of flight altitude. These strategies also can be applied to other measures derived from telemetry data.
Synthesis and applications. Our Commentary is intended to clarify and improve upon some of the assumptions made when estimating flight altitude and,more broadly, when using GPS telemetry data. We also propose best practices for identifying flight behaviour, and addressing GPS error,and using flight altitudes to estimate collision risk with anthropogenic structures. Addressing the issues we recount would befriend improve estimates of flight altitude and advance understanding of the treatment of error in wildlife telemetry studies.


Source: usgs.gov

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