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Social information use in migratory decision-making depends upon conspecific state. Behav Ecol Sociobiol 2022. [DOI: 10.1007/s00265-022-03229-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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2
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Stojanovic D, McEvoy J, Alves F, Rayner L, Heinsohn R, Saunders D, Webb M. Parental care does not compensate for the effects of bad years on reproductive success of a vagile bird. J Zool (1987) 2021. [DOI: 10.1111/jzo.12888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- D. Stojanovic
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - J. McEvoy
- Smithsonian Conservation Biology Institute National Zoological Park Front Royal VA USA
| | - F. Alves
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - L. Rayner
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - R. Heinsohn
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - D. Saunders
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - M. Webb
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
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3
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Mckinnon EA, Laplante MP, Love OP, Fraser KC, Mackenzie S, Vézina F. Tracking Landscape-Scale Movements of Snow Buntings and Weather-Driven Changes in Flock Composition During the Temperate Winter. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00329] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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Teitelbaum CS, Mueller T. Beyond Migration: Causes and Consequences of Nomadic Animal Movements. Trends Ecol Evol 2019; 34:569-581. [PMID: 30885413 DOI: 10.1016/j.tree.2019.02.005] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 02/08/2019] [Accepted: 02/12/2019] [Indexed: 11/18/2022]
Abstract
Recent advances in animal tracking reveal that many species display irregular movements that do not fall into classical categories of movement patterns such as range residency or migration. Here, we develop a unifying framework that distinguishes these nomadic movements based on their patterns, drivers, and mechanisms. Though they occur in diverse taxa and geographic regions, nomadic movements are united by both their underlying environmental drivers, mainly environmental stochasticity, and the resulting irregular, far-ranging movement patterns. The framework further classifies types of nomadic movements, including full, seasonal, phase, irruptive, and partial nomadism. Nomadic movements can have unique effects on populations, communities, and ecosystems, most notably providing intermittent disturbances and novel introductions of propagules.
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Affiliation(s)
- Claire S Teitelbaum
- Odum School of Ecology, University of Georgia, 140 E Green St., Athens, GA 30602, USA. https://twitter.com/@cs_teitelbaum
| | - Thomas Mueller
- Department of Biological Sciences, Goethe-University Frankfurt and Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Senckenberganlage 25, 60325 Frankfurt, Germany. https://twitter.com/@secnkenberg
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5
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Heinsohn R, Olah G, Webb M, Peakall R, Stojanovic D. Sex ratio bias and shared paternity reduce individual fitness and population viability in a critically endangered parrot. J Anim Ecol 2018; 88:502-510. [DOI: 10.1111/1365-2656.12922] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/25/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Robert Heinsohn
- Fenner School of Environment and Society Australian National University Canberra Australian Capital Territory Australia
| | - George Olah
- Fenner School of Environment and Society Australian National University Canberra Australian Capital Territory Australia
- Research School of Biology The Australian National University Canberra Australian Capital Territory Australia
| | - Matthew Webb
- Fenner School of Environment and Society Australian National University Canberra Australian Capital Territory Australia
| | - Rod Peakall
- Research School of Biology The Australian National University Canberra Australian Capital Territory Australia
| | - Dejan Stojanovic
- Fenner School of Environment and Society Australian National University Canberra Australian Capital Territory Australia
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6
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Stojanovic D, Cook HCL, Sato C, Alves F, Harris G, McKernan A, Rayner L, Webb MH, Sutherland WJ, Heinsohn R. Pre‐emptive action as a measure for conserving nomadic species. J Wildl Manage 2018. [DOI: 10.1002/jwmg.21575] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dejan Stojanovic
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
| | - Henry C. L. Cook
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
| | - Chloe Sato
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
| | - Fernanda Alves
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
| | - Grant Harris
- Ironbark Environmental Arboriculture PtyMelbourneVIC3068Australia
| | - Andrew McKernan
- Victorian Tree Industry OrganisationMelbourneVIC3782Australia
| | - Laura Rayner
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
| | - Matthew H. Webb
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
| | - William J. Sutherland
- Department of ZoologyUniversity of CambridgeThe David Attenborough BuildingCambridgeCB2 1TNUnited Kingdom
| | - Robert Heinsohn
- Fenner School of Environment and SocietyAustralian National UniversityActon2601Australia
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Watts HE, Cornelius JM, Fudickar AM, Pérez J, Ramenofsky M. Understanding variation in migratory movements: A mechanistic approach. Gen Comp Endocrinol 2018; 256:112-122. [PMID: 28756245 DOI: 10.1016/j.ygcen.2017.07.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/20/2017] [Accepted: 07/25/2017] [Indexed: 12/15/2022]
Abstract
Spatial and temporal fluctuations in resource availability have led to the evolution of varied migration patterns. In order to appropriately time movements in relation to resources, environmental cues are used to provide proximate information for timing and the endocrine system serves to integrate these external cues and behavioral and physiological responses. Yet, the regulatory mechanisms underlying migratory timing have rarely been compared across a broad range of migratory patterns. First, we offer an updated nomenclature of migration using a mechanistic perspective to clarify terminology describing migratory types in relation to ecology, behavior and endocrinology. We divide migratory patterns into three types: obligate, nomadic, and fugitive. Obligate migration is characterized by regular and directed annual movements between locations, most commonly for breeding and overwintering, where resources are predictable and sufficient. Nomadic migrations occur less predictably than do obligate migrations as animals make use of potentially rich but ephemeral resources that occur unpredictably in space or time. Fugitive migrations move animals away from an area in response to severe disruption of environmental conditions and occur as part of an emergency life history stage. We also consider partially migratory populations, which include a mix of sedentary and migratory individuals; the movement patterns of partial migrants are expected to fall into one of the three types above. For these various forms of migration, we review our understanding of the environmental cues and endocrine mechanisms that underlie the expression of a migratory state. Several common hormonal mechanisms exist across the varied migratory forms, but there are also important areas where further investigations are needed in order to gain broad insight into the origin of movements and the diversity of migratory patterns. We propose that taking a comparative approach across the migratory types that considers endocrine mechanisms will advance a new understanding of migration biology.
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Affiliation(s)
- Heather E Watts
- Department of Biology, Loyola Marymount University, Los Angeles, CA 90045, USA; School of Biological Sciences, Washington State University, Pullman, WA 99164, USA.
| | | | - Adam M Fudickar
- Environmental Resilience Institute, Indiana University, Bloomington, IN 47405, USA
| | - Jonathan Pérez
- Department of Neurobiology, Physiology & Behavior, University of California, Davis, CA 95616, USA
| | - Marilyn Ramenofsky
- Department of Neurobiology, Physiology & Behavior, University of California, Davis, CA 95616, USA
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8
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Stojanovic D, Olah G, Webb M, Peakall R, Heinsohn R. Genetic evidence confirms severe extinction risk for critically endangered swift parrots: implications for conservation management. Anim Conserv 2018. [DOI: 10.1111/acv.12394] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- D. Stojanovic
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - G. Olah
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
- Research School of Biology The Australian National University Canberra ACT Australia
| | - M. Webb
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
| | - R. Peakall
- Research School of Biology The Australian National University Canberra ACT Australia
| | - R. Heinsohn
- Fenner School of Environment and Society Australian National University Canberra ACT Australia
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9
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Kalle R, Ramesh T, Downs CT. When and where to move: Dynamic occupancy models explain the range dynamics of a food nomadic bird under climate and land cover change. GLOBAL CHANGE BIOLOGY 2018; 24:e27-e39. [PMID: 28799245 DOI: 10.1111/gcb.13861] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 06/23/2017] [Indexed: 06/07/2023]
Abstract
Globally, long-term research is critical to monitor the responses of tropical species to climate and land cover change at the range scale. Citizen science surveys can reveal the long-term persistence of poorly known nomadic tropical birds occupying fragmented forest patches. We applied dynamic occupancy models to 13 years (2002-2014) of citizen science-driven presence/absence data on Cape parrot (Poicephalus robustus), a food nomadic bird endemic to South Africa. We modeled its underlying range dynamics as a function of resource distribution, and change in climate and land cover through the estimation of colonization and extinction patterns. The range occupancy of Cape parrot changed little over time (ψ = 0.75-0.83) because extinction was balanced by recolonization. Yet, there was considerable regional variability in occupancy and detection probability increased over the years. Colonizations increased with warmer temperature and area of orchards, thus explaining their range shifts southeastwards in recent years. Although colonizations were higher in the presence of nests and yellowwood trees (Afrocarpus and Podocarpus spp.), the extinctions in small forest patches (≤227 ha) and during low precipitation (≤41 mm) are attributed to resource constraints and unsuitable climatic conditions. Loss of indigenous forest cover and artificial lake/water bodies increased extinction probabilities of Cape parrot. The land use matrix (fruit farms, gardens, and cultivations) surrounding forest patches provides alternative food sources, thereby facilitating spatiotemporal colonization and extinction in the human-modified matrix. Our models show that Cape parrots are vulnerable to extreme climatic conditions such as drought which is predicted to increase under climate change. Therefore, management of optimum sized high-quality forest patches is essential for long-term survival of Cape parrot populations. Our novel application of dynamic occupancy models to long-term citizen science monitoring data unfolds the complex relationships between the environmental dynamics and range fluctuations of this food nomadic species.
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Affiliation(s)
- Riddhika Kalle
- School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- School of Ecology and Environment Studies, Nalanda University, Rajgir, India
- Sálim Ali Centre for Ornithology and Natural History, Coimbatore, India
| | - Tharmalingam Ramesh
- School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- Sálim Ali Centre for Ornithology and Natural History, Coimbatore, India
| | - Colleen T Downs
- School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
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Webb MH, Terauds A, Tulloch A, Bell P, Stojanovic D, Heinsohn R. The importance of incorporating functional habitats into conservation planning for highly mobile species in dynamic systems. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2017; 31:1018-1028. [PMID: 28130909 DOI: 10.1111/cobi.12899] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 01/06/2017] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
The distribution of mobile species in dynamic systems can vary greatly over time and space. Estimating their population size and geographic range can be problematic and affect the accuracy of conservation assessments. Scarce data on mobile species and the resources they need can also limit the type of analytical approaches available to derive such estimates. We quantified change in availability and use of key ecological resources required for breeding for a critically endangered nomadic habitat specialist, the Swift Parrot (Lathamus discolor). We compared estimates of occupied habitat derived from dynamic presence-background (i.e., presence-only data) climatic models with estimates derived from dynamic occupancy models that included a direct measure of food availability. We then compared estimates that incorporate fine-resolution spatial data on the availability of key ecological resources (i.e., functional habitats) with more common approaches that focus on broader climatic suitability or vegetation cover (due to the absence of fine-resolution data). The occupancy models produced significantly (P < 0.001) smaller (up to an order of magnitude) and more spatially discrete estimates of the total occupied area than climate-based models. The spatial location and extent of the total area occupied with the occupancy models was highly variable between years (131 and 1498 km2 ). Estimates accounting for the area of functional habitats were significantly smaller (2-58% [SD 16]) than estimates based only on the total area occupied. An increase or decrease in the area of one functional habitat (foraging or nesting) did not necessarily correspond to an increase or decrease in the other. Thus, an increase in the extent of occupied area may not equate to improved habitat quality or function. We argue these patterns are typical for mobile resource specialists but often go unnoticed because of limited data over relevant spatial and temporal scales and lack of spatial data on the availability of key resources. Understanding changes in the relative availability of functional habitats is crucial to informing conservation planning and accurately assessing extinction risk for mobile resource specialists.
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Affiliation(s)
- Matthew H Webb
- Fenner School of Environment and Society, Australian National University, Canberra, ACT 0200, Australia
| | - Aleks Terauds
- Fenner School of Environment and Society, Australian National University, Canberra, ACT 0200, Australia
| | - Ayesha Tulloch
- Fenner School of Environment and Society, Australian National University, Canberra, ACT 0200, Australia
| | - Phil Bell
- Department of Zoology, University of Tasmania, Sandy Bay, Tasmania, 7005, Australia
| | - Dejan Stojanovic
- Fenner School of Environment and Society, Australian National University, Canberra, ACT 0200, Australia
| | - Robert Heinsohn
- Fenner School of Environment and Society, Australian National University, Canberra, ACT 0200, Australia
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11
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Crates R, Terauds A, Rayner L, Stojanovic D, Heinsohn R, Ingwersen D, Webb M. An occupancy approach to monitoring regent honeyeaters. J Wildl Manage 2017. [DOI: 10.1002/jwmg.21222] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ross Crates
- Fenner School; Australian National University; Canberra 2601 Australia
| | - Aleks Terauds
- Fenner School; Australian National University; Canberra 2601 Australia
| | - Laura Rayner
- Fenner School; Australian National University; Canberra 2601 Australia
| | - Dejan Stojanovic
- Fenner School; Australian National University; Canberra 2601 Australia
| | - Robert Heinsohn
- Fenner School; Australian National University; Canberra 2601 Australia
| | | | - Matthew Webb
- Fenner School; Australian National University; Canberra 2601 Australia
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12
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Runge CA, Tulloch AIT, Possingham HP, Tulloch VJD, Fuller RA. Incorporating dynamic distributions into spatial prioritization. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12395] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Claire A. Runge
- School of Geography, Planning and Environmental Management; University of Queensland; Brisbane QLD 4072 Australia
| | - Ayesha I. T. Tulloch
- Fenner School of Environment and Society; The Australian National University; Canberra ACT 2601 Australia
| | - Hugh P. Possingham
- School of Biological Sciences; The University of Queensland; Brisbane QLD 4072 Australia
- Department of Life Sciences; Imperial College London; Silwood Park UK
| | | | - Richard A. Fuller
- School of Biological Sciences; The University of Queensland; Brisbane QLD 4072 Australia
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