1
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Extractive foraging behaviour in woodpeckers evolves in species that retain a large ancestral brain. Anim Behav 2023. [DOI: 10.1016/j.anbehav.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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2
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Bergen S, Huso MM, Duerr AE, Braham MA, Katzner TE, Schmuecker S, Miller TA. Classifying behavior from short-interval biologging data: An example with GPS tracking of birds. Ecol Evol 2022; 12:e08395. [PMID: 35154643 PMCID: PMC8819645 DOI: 10.1002/ece3.8395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/28/2021] [Accepted: 11/03/2021] [Indexed: 11/17/2022] Open
Abstract
Recent advances in digital data collection have spurred accumulation of immense quantities of data that have potential to lead to remarkable ecological insight, but that also present analytic challenges. In the case of biologging data from birds, common analytical approaches to classifying movement behaviors are largely inappropriate for these massive data sets.We apply a framework for using K-means clustering to classify bird behavior using points from short time interval GPS tracks. K-means clustering is a well-known and computationally efficient statistical tool that has been used in animal movement studies primarily for clustering segments of consecutive points. To illustrate the utility of our approach, we apply K-means clustering to six focal variables derived from GPS data collected at 1-11 s intervals from free-flying bald eagles (Haliaeetus leucocephalus) throughout the state of Iowa, USA. We illustrate how these data can be used to identify behaviors and life-stage- and age-related variation in behavior.After filtering for data quality, the K-means algorithm identified four clusters in >2 million GPS telemetry data points. These four clusters corresponded to three movement states: ascending, flapping, and gliding flight; and one non-moving state: perching. Mapping these states illustrated how they corresponded tightly to expectations derived from natural history observations; for example, long periods of ascending flight were often followed by long gliding descents, birds alternated between flapping and gliding flight.The K-means clustering approach we applied is both an efficient and effective mechanism to classify and interpret short-interval biologging data to understand movement behaviors. Furthermore, because it can apply to an abundance of very short, irregular, and high-dimensional movement data, it provides insight into small-scale variation in behavior that would not be possible with many other analytical approaches.
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Affiliation(s)
- Silas Bergen
- Department of Mathematics and StatisticsWinona State UniversityWinonaMinnesotaUSA
| | - Manuela M. Huso
- U.S. Geological SurveyForest and Rangeland Ecosystem Science CenterCorvallisOregonUSA
- Statistics DepartmentOregon State UniversityCorvallisOregonUSA
| | - Adam E. Duerr
- Bloom Research Inc.Los AngelesCaliforniaUSA
- West Virginia UniversityMorgantownWest VirginiaUSA
- Conservation Science Global, Inc.West Cape MayNew JerseyUSA
| | | | - Todd E. Katzner
- U.S. Geological SurveyForest and Rangeland Ecosystem Science CenterBoiseIdahoUSA
| | - Sara Schmuecker
- U.S. Fish and Wildlife ServiceIllinois‐Iowa Field OfficeMolineIllinoisUSA
| | - Tricia A. Miller
- West Virginia UniversityMorgantownWest VirginiaUSA
- Conservation Science Global, Inc.West Cape MayNew JerseyUSA
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3
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White R, Palczewska A, Weaving D, Collins N, Jones B. Sequential movement pattern-mining (SMP) in field-based team-sport: A framework for quantifying spatiotemporal data and improve training specificity? J Sports Sci 2021; 40:164-174. [PMID: 34565294 DOI: 10.1080/02640414.2021.1982484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Athlete external load is typically quantified as volumes or discretised threshold values using distance, speed and time. A framework accounting for the movement sequences of athletes has previously been proposed using radio frequency data. This study developed a framework to identify sequential movement sequences using GPS-derived spatiotemporal data in team-sports and establish its stability. Thirteen rugby league players during one match were analysed to demonstrate the application of the framework. The framework (Sequential Movement Pattern-mining [SMP]) applies techniques to analyse i) geospatial data (i.e., decimal degree latitude and longitude), ii) determine players turning angles, iii) improve movement descriptor assignment, thus improving movement unit formation and iv) improve the classification and identification of players' frequent SMP. The SMP framework allows for sub-sequences of movement units to be condensed, removing repeated elements, which offers a novel technique for the quantification of similarities or dis-similarities between players and playing positions. The SMP framework provides a robust and stable method that allows, for the first time the analysis of GPS-derived data and identifies the frequent SMP of field-based team-sport athletes. The application of the SMP framework in practice could optimise the outcomes of training of field-based team-sport athletes by improving training specificity.
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Affiliation(s)
- Ryan White
- Carnegie Applied Rugby Research (Carr) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK.,Leeds Rhinos Rugby League Club, Leeds, UK
| | - Anna Palczewska
- Carnegie Applied Rugby Research (Carr) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK.,School of Built Environment, Engineering and Computing, Leeds Beckett University, Leeds, UK
| | - Dan Weaving
- Carnegie Applied Rugby Research (Carr) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK.,Leeds Rhinos Rugby League Club, Leeds, UK
| | - Neil Collins
- Carnegie Applied Rugby Research (Carr) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK.,England Performance Unit, Rugby Football League, Leeds, UK
| | - Ben Jones
- Carnegie Applied Rugby Research (Carr) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK.,Leeds Rhinos Rugby League Club, Leeds, UK.,England Performance Unit, Rugby Football League, Leeds, UK.,School of Science and Technology, University of New England, Armidale, New South Wales, Australia.,Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, The University of Cape Town and the Sports Science Institute of South Africa, Cape Town, South Africa
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4
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Humphreys JM, Douglas DC, Ramey AM, Mullinax JM, Soos C, Link P, Walther P, Prosser DJ. The spatial–temporal relationship of blue‐winged teal to domestic poultry: Movement state modelling of a highly mobile avian influenza host. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.13963] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- John M. Humphreys
- Agricultural Research Service U.S. Department of Agriculture Sidney MT USA
- Eastern Ecological Science Center at the Patuxent Research RefugeU.S. Geological Survey Laurel MD USA
| | | | - Andrew M. Ramey
- Alaska Science Center U.S. Geological Survey Anchorage AK USA
| | | | - Catherine Soos
- Ecotoxicology and Wildlife Health Division Environment and Climate Change Canada, Saskatoon Saskatchewan CA USA
| | - Paul Link
- Louisiana Department of Wildlife and Fisheries Baton Rouge LA USA
| | - Patrick Walther
- Texas Chenier Plain Refuge Complex U.S. Fish and Wildlife Service Anahuac TX USA
| | - Diann J. Prosser
- Eastern Ecological Science Center at the Patuxent Research RefugeU.S. Geological Survey Laurel MD USA
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5
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Chamberlain MJ, Cohen BS, Wightman PH, Rushton E, Hinton JW. Fine-scale movements and behaviors of coyotes ( Canis latrans) during their reproductive period. Ecol Evol 2021; 11:9575-9588. [PMID: 34306644 PMCID: PMC8293769 DOI: 10.1002/ece3.7777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 12/03/2022] Open
Abstract
In canids, resident breeders hold territories but require different resources than transient individuals (i.e., dispersers), which may result in differential use of space, land cover, and food by residents and transients. In the southeastern United States, coyote (Canis latrans) reproduction occurs during spring and is energetically demanding for residents, but transients do not reproduce and therefore can exhibit feeding behaviors with lower energetic rewards. Hence, how coyotes behave in their environment likely differs between resident and transient coyotes. We captured and monitored 36 coyotes in Georgia during 2018-2019 and used data from 11 resident breeders, 12 predispersing residents (i.e., offspring of resident breeders), and 11 transients to determine space use, movements, and relationships between these behaviors and landcover characteristics. Average home range size for resident breeders and predispersing offspring was 20.7 ± 2.5 km² and 50.7 ± 10.0 km², respectively. Average size of transient ranges was 241.4 ± 114.5 km². Daily distance moved was 6.3 ± 3.0 km for resident males, 5.5 ± 2.7 km for resident females, and 6.9 ± 4.2 km for transients. We estimated first-passage time values to assess the scale at which coyotes respond to their environment, and used behavioral change-point analysis to determine that coyotes exhibited three behavioral states. We found notable differences between resident and transient coyotes in regard to how landcover characteristics influenced their behavioral states. Resident coyotes tended to select for areas with denser vegetation while resting and foraging, but for areas with less dense vegetation and canopy cover when walking. Transient coyotes selected areas closer to roads and with lower canopy cover while resting, but for areas farther from roads when foraging and walking. Our findings suggest that behaviors of both resident and transient coyotes are influenced by varying landcover characteristics, which could have implications for prey.
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Affiliation(s)
| | - Bradley S. Cohen
- College of Arts and SciencesTennessee Technological UniversityCookevilleTNUSA
| | - Patrick H. Wightman
- Warnell School of Forestry and Natural ResourcesUniversity of GeorgiaAthensGAUSA
| | - Emily Rushton
- Georgia Department of Natural Resources – Wildlife Resources DivisionSocial CircleGAUSA
| | - Joseph W. Hinton
- College of Forest Resources and Environmental ScienceMichigan Technological UniversityHoughtonMIUSA
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6
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Sur M, Woodbridge B, Esque TC, Belthoff JR, Bloom PH, Fisher RN, Longshore K, Nussear KE, Tracey JA, Braham MA, Katzner TE. Linking behavioral states to landscape features for improved conservation management. Ecol Evol 2021; 11:7905-7916. [PMID: 34188860 PMCID: PMC8216984 DOI: 10.1002/ece3.7621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 11/07/2022] Open
Abstract
A central theme for conservation is understanding how animals differentially use, and are affected by change in, the landscapes they inhabit. However, it has been challenging to develop conservation schemes for habitat-specific behaviors.Here we use behavioral change point analysis to identify behavioral states of golden eagles (Aquila chrysaetos) in the Sonoran and Mojave Deserts of the southwestern United States, and we identify, for each behavioral state, conservation-relevant habitat associations.We modeled behavior using 186,859 GPS points from 48 eagles and identified 2,851 distinct segments comprising four behavioral states. Altitude above ground level (AGL) best differentiated behavioral states, with two clusters of short-distance movement behaviors characterized by low AGL (state 1 AGL = 14 m (median); state 2 AGL = 11 m) and two associated with longer-distance movement behaviors and characterized by higher AGL (state 3 AGL = 108 m; state 4 AGL = 450 m).Behaviors such as perching and low-altitude hunting were associated with short-distance movements in updraft-poor environments, at higher elevations, and over steeper and more north-facing terrain. In contrast, medium-distance movements such as hunting and transiting were over gentle and south-facing slopes. Long-distance transiting occurred over the desert habitats that generate the best updraft.This information can guide management of this species, and our approach provides a template for behavior-specific habitat associations for other species of management concern.
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Affiliation(s)
- Maitreyi Sur
- Conservation Science Global, Inc.West Cape MayNJUSA
- Boise State UniversityBoiseIDUSA
| | | | - Todd C. Esque
- U.S. Geological SurveyWestern Ecological Research CenterHendersonNVUSA
| | | | | | - Robert N. Fisher
- U.S. Geological SurveyWestern Ecological Research CenterSan DiegoCAUSA
| | | | | | - Jeff A. Tracey
- U.S. Geological SurveyWestern Ecological Research CenterSan DiegoCAUSA
| | | | - Todd E. Katzner
- U.S. Geological SurveyForest and Rangeland Ecosystem Science CenterBoiseIDUSA
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7
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Chamberlain MJ, Cohen BS, Bakner NW, Collier BA. Behavior and Movement of Wild Turkey Broods. J Wildl Manage 2020. [DOI: 10.1002/jwmg.21883] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael J. Chamberlain
- Warnell School of Forestry and Natural Resources, University of GeorgiaAthens GA 30602 USA
| | - Bradley S. Cohen
- College of Arts and Science, Tennessee Technological University Cookeville TN 38505 USA
| | - Nicholas W. Bakner
- Warnell School of Forestry and Natural Resources, University of GeorgiaAthens GA 30602 USA
| | - Bret A. Collier
- School of Renewable Natural Resources, Louisiana State University Agricultural CenterBaton Rouge LA 70803 USA
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8
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Requier F, Henry M, Decourtye A, Brun F, Aupinel P, Rebaudo F, Bretagnolle V. Measuring ontogenetic shifts in central-place foragers: A case study with honeybees. J Anim Ecol 2020; 89:1860-1871. [PMID: 32419193 DOI: 10.1111/1365-2656.13248] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/05/2020] [Indexed: 11/24/2022]
Abstract
Measuring time-activity budgets over the complete individual life span is now possible for many animals with the recent advances of life-long individual monitoring devices. Although analyses of changes in the patterns of time-activity budgets have revealed ontogenetic shifts in birds or mammals, no such technique has been applied to date on insects. We tested an automated breakpoint-based procedure to detect, assess and quantify shifts in the temporal pattern of the flight activities in honeybees. We assumed that the learning and foraging stages of honeybees will differ in several respects, to detect the age at onset of foraging (AOF). Using an extensive dataset covering the life-long monitoring of 1,167 individuals, we compared the AOF outputs with the more conventional approaches based on arbitrary thresholds. We further evaluated the robustness of the different methods comparing the foraging time-activity budget allocations between the presumed foragers and confirmed foragers. We revealed a clear-cut learning-foraging ontogenetic shift that differs in duration, frequency and time of occurrence of flights. Although AOF appeared to be highly plastic among bees, the breakpoint-based procedure seems better capable to detect it than arbitrary threshold-based methods that are unable to deal with inter-individual variation. We developed the aof r-package including a broad range of examples with both simulated and empirical datasets to illustrate the simplicity of use of the procedure. This simple procedure is generic enough to be derived from any individual life-long monitoring devices recording the time-activity budgets, and could propose new ecological applications of bio-logging to detect ontogenetic shifts in the behaviour of central-place foragers.
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Affiliation(s)
- Fabrice Requier
- UMR Évolution, Génomes, Comportement et Écologie, CNRS, IRD, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Mickaël Henry
- UR 406 Abeilles et Environnement, INRAE, Avignon, France.,UMT PrADE, Avignon, France
| | - Axel Decourtye
- UMT PrADE, Avignon, France.,ACTA, Avignon, France.,ITSAP-Institut de l'abeille, Avignon, France
| | | | - Pierrick Aupinel
- UE 1255 APIS 'Abeilles paysages interactions et systèmes de culture', INRAE, Surgères, France
| | - François Rebaudo
- UMR Évolution, Génomes, Comportement et Écologie, CNRS, IRD, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Vincent Bretagnolle
- Centre d'Etudes Biologiques de Chizé, CNRS & La Rochelle University, UMR 7372, Beauvoir sur Niort, France.,LTSER Zone Atelier 'Plaine & Val de Sèvre', CNRS, Villiers-en-Bois, France
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9
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Rycken S, Warren KS, Yeap L, Jackson B, Riley K, Page M, Dawson R, Smith K, Mawson PR, Shephard JM. Assessing integration of black cockatoos using behavioral change point analysis. J Wildl Manage 2018. [DOI: 10.1002/jwmg.21609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sam Rycken
- School of Veterinary and Life SciencesMurdoch UniversityWestern Australia6150Australia
| | - Kristin S. Warren
- School of Veterinary and Life SciencesMurdoch UniversityWestern Australia6150Australia
| | - Lian Yeap
- School of Veterinary and Life SciencesMurdoch UniversityWestern Australia6150Australia
| | - Bethany Jackson
- School of Veterinary and Life SciencesMurdoch UniversityWestern Australia6150Australia
| | - Karen Riley
- School of Veterinary and Life SciencesMurdoch UniversityWestern Australia6150Australia
| | - Manda Page
- Department of BiodiversityConservation and AttractionsWestern Australia6151Australia
| | - Rick Dawson
- Department of BiodiversityConservation and AttractionsWestern Australia6151Australia
| | - Karen Smith
- Department of BiodiversityConservation and AttractionsWestern Australia6151Australia
| | - Peter R. Mawson
- Perth ZooDepartment of BiodiversityConservation and AttractionsWestern Australia6151Australia
| | - Jill M. Shephard
- Perth ZooDepartment of BiodiversityConservation and AttractionsWestern Australia6151Australia
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10
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Deriving Animal Movement Behaviors Using Movement Parameters Extracted from Location Data. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 2018. [DOI: 10.3390/ijgi7020078] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Walden-Schreiner C, Leung YF, Kuhn T, Newburger T. Integrating direct observation and GPS tracking to monitor animal behavior for resource management. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:75. [PMID: 29322276 DOI: 10.1007/s10661-018-6463-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/01/2018] [Indexed: 06/07/2023]
Abstract
Monitoring the behavior of pack animals in protected areas informs management about use patterns and the potential associated negative impacts. However, systematic assessments of behavior are uncommon due to methodological and logistical constraints. This study integrated behavior mapping with GPS tracking, and applied behavior change point analysis, as an approach to monitor the behaviors of pack animals during overnight periods. The integrated approach identified multiple grazing patterns (i.e., locally intense grazing, ambulatory grazing) not feasible through a single methodology alone. Monitoring behavior and corresponding environmental conditions aid managers in implementing strategies designed to mitigate impacts associated with pack animals in natural areas. Results also contrast the influence of temporal scale on behavior segmentation to inform decisions for further monitoring and management of domestic animal use and impacts in natural areas. This integrated approach reduced time and logistical constraints of each method individually to promote ongoing monitoring and highlight how multiple management tactics could reduce impacts to sensitive habitats.
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Affiliation(s)
- Chelsey Walden-Schreiner
- Department of Parks, Recreation, and Tourism Management, North Carolina State University, CB 8004, Raleigh, NC, 27695, USA
| | - Yu-Fai Leung
- Department of Parks, Recreation, and Tourism Management, North Carolina State University, CB 8004, Raleigh, NC, 27695, USA.
| | - Tim Kuhn
- Division of Resources Management and Science, U.S. National Park Service, Yosemite National Park, El Portal, CA, 95318, USA
| | - Todd Newburger
- Division of Resources Management and Science, U.S. National Park Service, Yosemite National Park, El Portal, CA, 95318, USA
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12
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Bennison A, Bearhop S, Bodey TW, Votier SC, Grecian WJ, Wakefield ED, Hamer KC, Jessopp M. Search and foraging behaviors from movement data: A comparison of methods. Ecol Evol 2018; 8:13-24. [PMID: 29321847 PMCID: PMC5756868 DOI: 10.1002/ece3.3593] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 10/06/2017] [Accepted: 10/11/2017] [Indexed: 11/17/2022] Open
Abstract
Search behavior is often used as a proxy for foraging effort within studies of animal movement, despite it being only one part of the foraging process, which also includes prey capture. While methods for validating prey capture exist, many studies rely solely on behavioral annotation of animal movement data to identify search and infer prey capture attempts. However, the degree to which search correlates with prey capture is largely untested. This study applied seven behavioral annotation methods to identify search behavior from GPS tracks of northern gannets (Morus bassanus), and compared outputs to the occurrence of dives recorded by simultaneously deployed time-depth recorders. We tested how behavioral annotation methods vary in their ability to identify search behavior leading to dive events. There was considerable variation in the number of dives occurring within search areas across methods. Hidden Markov models proved to be the most successful, with 81% of all dives occurring within areas identified as search. k-Means clustering and first passage time had the highest rates of dives occurring outside identified search behavior. First passage time and hidden Markov models had the lowest rates of false positives, identifying fewer search areas with no dives. All behavioral annotation methods had advantages and drawbacks in terms of the complexity of analysis and ability to reflect prey capture events while minimizing the number of false positives and false negatives. We used these results, with consideration of analytical difficulty, to provide advice on the most appropriate methods for use where prey capture behavior is not available. This study highlights a need to critically assess and carefully choose a behavioral annotation method suitable for the research question being addressed, or resulting species management frameworks established.
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Affiliation(s)
- Ashley Bennison
- MaREI Centre for Marine and Renewable EnergyEnvironmental Research InstituteUniversity College CorkCorkIreland
- School of BiologicalEarth, and Environmental Sciences (BEES)University College CorkCorkIreland
| | - Stuart Bearhop
- Centre for Ecology & ConservationUniversity of ExeterPenrynUK
| | - Thomas W. Bodey
- Centre for Ecology & ConservationUniversity of ExeterPenrynUK
| | | | - W. James Grecian
- Sea Mammal Research UnitScottish Oceans InstituteUniversity of St AndrewsSt Andrews, FifeScotland
| | - Ewan D. Wakefield
- Sea Mammal Research UnitScottish Oceans InstituteUniversity of St AndrewsSt Andrews, FifeScotland
- Institute of Biodiversity, Animal Health and Comparative MedicineCollege of Medical, Veterinary, and Life SciencesUniversity of GlasgowGlasgowScotland
| | - Keith C. Hamer
- Faculty of Biological SciencesSchool of BiologyUniversity of LeedsLeedsUK
| | - Mark Jessopp
- MaREI Centre for Marine and Renewable EnergyEnvironmental Research InstituteUniversity College CorkCorkIreland
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13
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Zheng A, Jiang B, Li Y, Zhang X, Ding C. Elastic K-means using posterior probability. PLoS One 2017; 12:e0188252. [PMID: 29240756 PMCID: PMC5730165 DOI: 10.1371/journal.pone.0188252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 11/05/2017] [Indexed: 11/30/2022] Open
Abstract
The widely used K-means clustering is a hard clustering algorithm. Here we propose a Elastic K-means clustering model (EKM) using posterior probability with soft capability where each data point can belong to multiple clusters fractionally and show the benefit of proposed Elastic K-means. Furthermore, in many applications, besides vector attributes information, pairwise relations (graph information) are also available. Thus we integrate EKM with Normalized Cut graph clustering into a single clustering formulation. Finally, we provide several useful matrix inequalities which are useful for matrix formulations of learning models. Based on these results, we prove the correctness and the convergence of EKM algorithms. Experimental results on six benchmark datasets demonstrate the effectiveness of proposed EKM and its integrated model.
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Affiliation(s)
| | | | - Yan Li
- Anhui Broadcasting Movie and Television College, Hefei, China
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14
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Statistical modelling of individual animal movement: an overview of key methods and a discussion of practical challenges. ASTA-ADVANCES IN STATISTICAL ANALYSIS 2017. [DOI: 10.1007/s10182-017-0302-7] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Chilvers BL. Comparison of New Zealand’s little blue penguins, Eudyptula minor, diving behaviour. Polar Biol 2017. [DOI: 10.1007/s00300-017-2112-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Poupart TA, Waugh SM, Bost C, Bost CA, Dennis T, Lane R, Rogers K, Sugishita J, Taylor GA, Wilson KJ, Zhang J, Arnould JPY. Variability in the foraging range of Eudyptula minor across breeding sites in central New Zealand. NEW ZEALAND JOURNAL OF ZOOLOGY 2017. [DOI: 10.1080/03014223.2017.1302970] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Timothée A. Poupart
- Museum of New Zealand Te Papa Tongarewa, Wellington, New Zealand
- School of Life and Environmental Sciences, Deakin University, Burwood, Australia
| | - Susan M. Waugh
- Museum of New Zealand Te Papa Tongarewa, Wellington, New Zealand
| | - Caroline Bost
- Museum of New Zealand Te Papa Tongarewa, Wellington, New Zealand
| | - Charles-Andre Bost
- Centre National de la Recherche Scientifique, Centre d’Etudes Biologique de Chizé, Villiers-en-Bois, France
| | - Todd Dennis
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Reuben Lane
- West Coast Penguin Trust, Hokitika, New Zealand
| | | | | | | | | | - Jingjing Zhang
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - John P. Y. Arnould
- School of Life and Environmental Sciences, Deakin University, Burwood, Australia
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17
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Valletta JJ, Torney C, Kings M, Thornton A, Madden J. Applications of machine learning in animal behaviour studies. Anim Behav 2017. [DOI: 10.1016/j.anbehav.2016.12.005] [Citation(s) in RCA: 230] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Mahoney PJ, Young JK. Uncovering behavioural states from animal activity and site fidelity patterns. Methods Ecol Evol 2016. [DOI: 10.1111/2041-210x.12658] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Peter J. Mahoney
- Department of Wildland Resources and The Ecology Center Utah State University Logan UT 84322 USA
| | - Julie K. Young
- USDA‐WS‐NWRC‐Predator Research Facility Logan UT 84322 USA
- Department of Wildland Resources Utah State University Logan UT 84322 USA
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19
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Edelhoff H, Signer J, Balkenhol N. Path segmentation for beginners: an overview of current methods for detecting changes in animal movement patterns. MOVEMENT ECOLOGY 2016; 4:21. [PMID: 27595001 PMCID: PMC5010771 DOI: 10.1186/s40462-016-0086-5] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 08/09/2016] [Indexed: 05/07/2023]
Abstract
Increased availability of high-resolution movement data has led to the development of numerous methods for studying changes in animal movement behavior. Path segmentation methods provide basics for detecting movement changes and the behavioral mechanisms driving them. However, available path segmentation methods differ vastly with respect to underlying statistical assumptions and output produced. Consequently, it is currently difficult for researchers new to path segmentation to gain an overview of the different methods, and choose one that is appropriate for their data and research questions. Here, we provide an overview of different methods for segmenting movement paths according to potential changes in underlying behavior. To structure our overview, we outline three broad types of research questions that are commonly addressed through path segmentation: 1) the quantitative description of movement patterns, 2) the detection of significant change-points, and 3) the identification of underlying processes or 'hidden states'. We discuss advantages and limitations of different approaches for addressing these research questions using path-level movement data, and present general guidelines for choosing methods based on data characteristics and questions. Our overview illustrates the large diversity of available path segmentation approaches, highlights the need for studies that compare the utility of different methods, and identifies opportunities for future developments in path-level data analysis.
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Affiliation(s)
- Hendrik Edelhoff
- Department of Wildlife Sciences, University of Göttingen, Büsgenweg 3, 37077 Göttingen, Germany
| | - Johannes Signer
- Department of Wildlife Sciences, University of Göttingen, Büsgenweg 3, 37077 Göttingen, Germany
| | - Niko Balkenhol
- Department of Wildlife Sciences, University of Göttingen, Büsgenweg 3, 37077 Göttingen, Germany
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