Seasonal variation in habitat selection for a Neotropical migratory songbird using high‐resolution GPS tracking

Stanley, Calandra Q.; Dudash, Michele R.; Ryder, Thomas B.; Shriver, W. Gregory; Serno, Kimberly; Adalsteinsson, Solny A.; Marra, Peter P.

doi:10.1002/ecs2.3421

Cited by 26 publications

(23 citation statements)

References 68 publications

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“…Advances in electronic tracking technologies have revolutionized our ability to monitor animal movements and behavior over extended periods of time in both terrestrial and aquatic environments. The use of radio, satellite, global positioning system (GPS), and acoustic tracking devices has expanded research on fundamental ecological topics, such as habitat requirements, dispersal, migratory routes, foraging, and home‐range characteristics (McIntyre et al, 2017 ; Powell et al, 2016 ; Séchaud et al, 2021 ; Snijders et al, 2014 ; Stanley et al, 2021 ). Each technology has strengths and limitations, and trade‐offs exist for current tracking systems depending on research questions and study species (Bridge et al, 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Optimizing trilateration estimates for tracking fine‐scale movement of wildlife using automated radio telemetry networks

Paxton

Baker

Crytser

et al. 2022

Ecology and Evolution

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A major advancement in the use of radio telemetry has been the development of automated radio tracking systems (ARTS), which allow animal movements to be tracked continuously. A new ARTS approach is the use of a network of simple radio receivers (nodes) that collect radio signal strength (RSS) values from animal‐borne radio transmitters. However, the use of RSS‐based localization methods in wildlife tracking research is new, and analytical approaches critical for determining high‐quality location data have lagged behind technological developments. We present an analytical approach to optimize RSS‐based localization estimates for a node network designed to track fine‐scale animal movements in a localized area. Specifically, we test the application of analytical filters (signal strength, distance among nodes) to data from real and simulated node networks that differ in the density and configuration of nodes. We evaluate how different filters and network configurations (density and regularity of node spacing) may influence the accuracy of RSS‐based localization estimates. Overall, the use of signal strength and distance‐based filters resulted in a 3‐ to 9‐fold increase in median accuracy of location estimates over unfiltered estimates, with the most stringent filters providing location estimates with a median accuracy ranging from 28 to 73 m depending on the configuration and spacing of the node network. We found that distance filters performed significantly better than RSS filters for networks with evenly spaced nodes, but the advantage diminished when nodes were less uniformly spaced within a network. Our results not only provide analytical approaches to greatly increase the accuracy of RSS‐based localization estimates, as well as the computer code to do so, but also provide guidance on how to best configure node networks to maximize the accuracy and capabilities of such systems for wildlife tracking studies.

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Section: Introductionmentioning

confidence: 99%

Optimizing trilateration estimates for tracking fine‐scale movement of wildlife using automated radio telemetry networks

Paxton

Baker

Crytser

et al. 2022

Ecology and Evolution

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“…Home range size and habitat selection patterns often vary during the annual cycle (Rühmann et al, 2019 ; Stanley et al, 2021 ; Wiktander et al, 2001 ). We found that the smallest (7.58 ha) and the largest (29.09 ha) home range size corresponded to an egg‐laying bird (JP4645; Tables 1 and 2 ) and a chick‐rearing bird (KGSK2033), which is consistent with general expectations for birds (e.g., Kolts & McRae, 2017 ; Zurell et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Where did the finch go? Insights from radio telemetry of the medium ground finch (Geospiza fortis)

Beausoleil

Camacho

Rabadán‐González³

et al. 2022

Ecology and Evolution

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Movement patterns and habitat selection of animals have important implications for ecology and evolution. Darwin's finches are a classic model system for ecological and evolutionary studies, yet their spatial ecology remains poorly studied. We tagged and radio‐tracked five (three females, two males) medium ground finches ( Geospiza fortis ) to examine the feasibility of telemetry for understanding their movement and habitat use. Based on 143 locations collected during a 3‐week period, we analyzed for the first time home‐range size and habitat selection patterns of finches at El Garrapatero, an arid coastal ecosystem on Santa Cruz Island (Galápagos). The average 95% home range and 50% core area for G . fortis in the breeding season was 20.54 ha ± 4.04 ha SE and 4.03 ha ± 1.11 ha SE , respectively. For most of the finches, their home range covered a diverse set of habitats. Three finches positively selected the dry‐forest habitat, while the other habitats seemed to be either negatively selected or simply neglected by the finches. In addition, we noted a communal roosting behavior in an area close to the ocean, where the vegetation is greener and denser than the more inland dry‐forest vegetation. We show that telemetry on Darwin's finches provides valuable data to understand the movement ecology of the species. Based on our results, we propose a series of questions about the ecology and evolution of Darwin's finches that can be addressed using telemetry.

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“…for a wide range of genera across a diversity of heterogeneous ecosystems (e.g., Fleming et al, 1987;Van Schaik et al, 1993;Pape and Löffler, 2015;Vélez et al, 2017;Stanley et al, 2021), including chimpanzees in forest-woodland mosaic environments (Collins and McGrew, 1988;Pennec et al, 2020). Moreover, modern human hunter-gatherers show clear patterns of seasonal movement, with camps tending to be located near perennial water sources during the (late) dry season (e.g., Hawkes et al, 1997;Lee, 2013).…”

Section: Seasonality and Habitat Selection In The Oldowanmentioning

confidence: 99%

Seasonality and Oldowan behavioral variability in East Africa

Linares‐Matás

Clark

2022

Journal of Human Evolution

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The extent, nature, and temporality of early hominin food procurement strategies has been subject to extensive debate. In this paper, we examine evidence for the seasonal scheduling of resource procurement and technological investment in the Oldowan, starting with an evaluation of the seasonal signature of USOs, freshwater resources, and terrestrial animal resources in extant primates and modern human hunter-gatherer populations. Subsequently, we use the mortality profiles, taxonomic composition, and taphonomy of the bovid assemblages at Kanjera South (Homa Peninsula, Kenya) and FLK-Zinj (Olduvai Gorge, Tanzania) to illustrate the behavioral flexibility of Oldowan hominins, who were targeting different seasonally-vulnerable demographics. In terms of the lithic assemblages, the specific opportunities and constraints afforded by dry season subsistence at FLK-Zinj may have disincentivized lithic investment, resulting in a more expedient toolkit for fast and effective carcass processing. This may have been reinforced by raw material site provisioning during a relatively prolonged seasonal occupation, reducing pressures on the reduction and curation of lithic implements. In contrast, wet season plant abundance would have offered a predictable set of high-quality resources associated with low levels of competition and reduced search times, in the context of perhaps greater seasonal mobility and consequently shorter occupations. These factors appear to have fostered technological investment to reduce resource handling costs at Kanjera South, facilitated by more consistent net returns and enhanced planning of lithic deployment throughout the landscape. We subsequently discuss the seasonality of freshwater resources in Oldowan procurement strategies, focusing on FwJj20 (Koobi Fora, Kenya). While more analytical studies with representative sample sizes are needed, we argue that inter-assemblage differences evidence the ability of Oldowan hominins to adapt to seasonal constraints and opportunities in resource exploitation.

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Seasonal variation in habitat selection for a Neotropical migratory songbird using high‐resolution GPS tracking

Abstract: Seasonal variation in habitat selection for a Neotropical migratory songbird using high-resolution GPS tracking.

Cited by 26 publications

References 68 publications

Optimizing trilateration estimates for tracking fine‐scale movement of wildlife using automated radio telemetry networks

Optimizing trilateration estimates for tracking fine‐scale movement of wildlife using automated radio telemetry networks

Where did the finch go? Insights from radio telemetry of the medium ground finch (Geospiza fortis)

Seasonality and Oldowan behavioral variability in East Africa

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