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Quantifying animal movements is necessary for answering a wide array of research questions in ecology and conservation biology. Consequently, ecologists have made considerable efforts to identify the best way to estimate an animal's home range, and many methods of estimating home ranges have arisen over the past half a century. Most of these methods fall into two distinct categories of estimators that have only recently been d...
The Range‐Resident Logistic Model: A New Framework to Formalise the Population‐Dynamics Consequences of Range ResidencyNARA Subscribed
Individual movement is critical in shaping population dynamics. However, existing frameworks linking these two processes often rely on unrealistic assumptions or numerical simulations. To address this gap, we introduce the range‐resident logistic model, an easy‐to‐simulate and mathematically tractable extension of the spatial logistic model that incorporates empirically supported range‐resident movement. Our framework unifies...
Accurately quantifying species’ area requirements is a prerequisite for effective area‐based conservation. This typically involves collecting tracking data on species of interest and then conducting home‐range analyses. Problematically, autocorrelation in tracking data can result in space needs being severely underestimated. Based on the previous work, we hypothesized the magnitude of underestimation varies with body mass, a r...
Large birds travel farther in homogeneous environmentsNARA Subscribed
Aim Animal movement is an important determinant of individual survival, population dynamics and ecosystem structure and function. Nonetheless, it is still unclear how local movements are related to resource availability and the spatial arrangement of resources. Using resident bird species and migratory bird species outside the migratory period, we examined how the distribution of resources affects the movement patterns of both...
Estimating where and how animals travel: an optimal framework for path reconstruction from autocorrelated tracking dataNARA Subscribed
An animal's trajectory is a fundamental object of interest in movement ecology, as it directly informs a range of topics from resource selection to energy expenditure and behavioral states. Optimally inferring the mostly unobserved movement path and its dynamics from a limited sample of telemetry observations is a key unsolved problem, however. The field of geostatistics has focused significant attention on a mathematically an...
Animal migration is a global phenomenon, but few studies have examined the substantial within‐ and between‐species variation in migration distances. We built a global database of 94 land migrations of large mammalian herbivore populations ranging from 10 to 1638 km. We examined how resource availability, spatial scale of resource variability and body size affect migration distance among populations. Resource availability measu...
Rigorous home range estimation with movement data: a new autocorrelated kernel density estimatorNARA Subscribed
Quantifying animals' home ranges is a key problem in ecology and has important conservation and wildlife management applications. Kernel density estimation (KDE) is a workhorse technique for range delineation problems that is both statistically efficient and nonparametric. KDE assumes that the data are independent and identically distributed (IID). However, animal tracking data, which are routinely used as inputs to KDEs, are...
Stacking species distribution models and adjusting bias by linking them to macroecological modelsNARA Subscribed
Aim Species distribution models ( SDM s) are common tools in biogeography and conservation ecology. It has been repeatedly claimed that aggregated (stacked) SDM s ( S ‐ SDM s) will overestimate species richness. One recently suggested solution to this problem is to use macroecological models of species richness to constrain S ‐ SDM s. Here, we examine current practice in the development of S ‐ SDM s to identify methodological...
Will Limits of the Earth's Resources Control Human Numbers?NARA Subscribed
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