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Backhouse F, Welbergen JA, Magrath RD, Dalziell AH. Depleted cultural richness of an avian vocal mimic in fragmented habitat. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Fiona Backhouse
- The Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
| | - Justin A. Welbergen
- The Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
| | - Robert D. Magrath
- Research School of Biology The Australian National University Canberra Australian Capital Territory Australia
| | - Anastasia H. Dalziell
- The Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
- Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong New South Wales Australia
- Fuller Evolutionary Biology Program, Cornell Lab of Ornithology Cornell University Ithaca New York USA
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Chimento M, Barrett BJ, Kandler A, Aplin LM. Cultural diffusion dynamics depend on behavioural production rules. Proc Biol Sci 2022; 289:20221001. [PMID: 35946158 PMCID: PMC9363993 DOI: 10.1098/rspb.2022.1001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Culture is an outcome of both the acquisition of knowledge about behaviour through social transmission, and its subsequent production by individuals. Acquisition and production are often discussed or modelled interchangeably, yet to date no study has explored the consequences of their interaction for cultural diffusions. We present a generative model that integrates the two, and ask how variation in production rules might influence diffusion dynamics. Agents make behavioural choices that change as they learn from their productions. Their repertoires may also change, and the acquisition of behaviour is conditioned on its frequency. We analyse the diffusion of a novel behaviour through social networks, yielding generalizable predictions of how individual-level behavioural production rules influence population-level diffusion dynamics. We then investigate how linking acquisition and production might affect the performance of two commonly used inferential models for social learning; network-based diffusion analysis, and experience-weighted attraction models. We find that the influence that production rules have on diffusion dynamics has consequences for how inferential methods are applied to empirical data. Our model illuminates the differences between social learning and social influence, demonstrates the overlooked role of reinforcement learning in cultural diffusions, and allows for clearer discussions about social learning strategies.
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Affiliation(s)
- Michael Chimento
- Cognitive and Cultural Ecology Research Group, Max Planck Institute of Animal Behavior, Am Obstberg 1, Radolfzell 78315, Germany.,Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Universitätsstraße 10, Konstanz 78464, Germany.,Department of Biology, University of Konstanz, Universitätsstraße 10, Konstanz 78464, Germany
| | - Brendan J Barrett
- Department for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Am Obstberg 1, Radolfzell 78315, Germany.,Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Universitätsstraße 10, Konstanz 78464, Germany.,Department of Biology, University of Konstanz, Universitätsstraße 10, Konstanz 78464, Germany.,Department of Human Behavior, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig 04103, Germany
| | - Anne Kandler
- Department of Human Behavior, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig 04103, Germany
| | - Lucy M Aplin
- Cognitive and Cultural Ecology Research Group, Max Planck Institute of Animal Behavior, Am Obstberg 1, Radolfzell 78315, Germany.,Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Universitätsstraße 10, Konstanz 78464, Germany.,Division of Ecology and Evolution, Research School of Biology, The Australian National University, 46 Sullivan Creek Road, Canberra, Australian Capital Territory 2600, Australia
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Backhouse F, Dalziell AH, Magrath RD, Rice AN, Crisologo TL, Welbergen JA. Differential geographic patterns in song components of male Albert's lyrebirds. Ecol Evol 2021; 11:2701-2716. [PMID: 33767830 PMCID: PMC7981226 DOI: 10.1002/ece3.7225] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/18/2020] [Accepted: 12/23/2020] [Indexed: 12/25/2022] Open
Abstract
Geographic variation in bird song has received much attention in evolutionary studies, yet few consider components within songs that may be subject to different constraints and follow different evolutionary trajectories. Here, we quantify patterns of geographic variation in the socially transmitted "whistle" song of Albert's lyrebirds (Menura alberti), an oscine passerine renowned for its remarkable vocal abilities. Albert's lyrebirds are confined to narrow stretches of suitable habitat in Australia, allowing us to map likely paths of cultural transmission using a species distribution model and least cost paths. We use quantitative methods to divide the songs into three components present in all study populations: the introductory elements, the song body, and the final element. We compare geographic separation between populations with variation in these components as well as the full song. All populations were distinguishable by song, and songs varied according to the geographic distance between populations. However, within songs, only the introductory elements and song body could be used to distinguish among populations. The song body and final element changed with distance, but the introductory elements varied independently of geographic separation. These differing geographic patterns of within-song variation are unexpected, given that the whistle song components are always produced in the same sequence and may be perceived as a temporally discrete unit. Knowledge of such spatial patterns of within-song variation enables further work to determine possible selective pressures and constraints acting on each song component and provides spatially explicit targets for preserving cultural diversity. As such, our study highlights the importance for science and conservation of investigating spatial patterns within seemingly discrete behavioral traits at multiple levels of organization.
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Affiliation(s)
- Fiona Backhouse
- The Hawkesbury Institute for the EnvironmentWestern Sydney UniversityRichmondNSWAustralia
| | - Anastasia H. Dalziell
- The Hawkesbury Institute for the EnvironmentWestern Sydney UniversityRichmondNSWAustralia
- Centre for Sustainable Ecosystem SolutionsSchool of Earth, Atmospheric and Life SciencesUniversity of WollongongWollongongNSWAustralia
- Fuller Evolutionary Biology ProgramCornell Lab of OrnithologyCornell UniversityIthacaNYUSA
- Macaulay LibraryCornell Lab of OrnithologyCornell UniversityIthacaNYUSA
- Center for Conservation BioacousticsCornell Lab of OrnithologyCornell UniversityIthacaNYUSA
| | - Robert D. Magrath
- Research School of Biologythe Australian National UniversityCanberraACTAustralia
| | - Aaron N. Rice
- Center for Conservation BioacousticsCornell Lab of OrnithologyCornell UniversityIthacaNYUSA
| | - Taylor L. Crisologo
- The Hawkesbury Institute for the EnvironmentWestern Sydney UniversityRichmondNSWAustralia
- Macaulay LibraryCornell Lab of OrnithologyCornell UniversityIthacaNYUSA
| | - Justin A. Welbergen
- The Hawkesbury Institute for the EnvironmentWestern Sydney UniversityRichmondNSWAustralia
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Ecoacoustics: A Quantitative Approach to Investigate the Ecological Role of Environmental Sounds. MATHEMATICS 2018. [DOI: 10.3390/math7010021] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Ecoacoustics is a recent ecological discipline focusing on the ecological role of sounds. Sounds from the geophysical, biological, and anthropic environment represent important cues used by animals to navigate, communicate, and transform unknown environments in well-known habitats. Sounds are utilized to evaluate relevant ecological parameters adopted as proxies for biodiversity, environmental health, and human wellbeing assessment due to the availability of autonomous audio recorders and of quantitative metrics. Ecoacoustics is an important ecological tool to establish an innovative biosemiotic narrative to ensure a strategic connection between nature and humanity, to help in-situ field and remote-sensing surveys, and to develop long-term monitoring programs. Acoustic entropy, acoustic richness, acoustic dissimilarity index, acoustic complexity indices (ACItf and ACIft and their evenness), normalized difference soundscape index, ecoacoustic event detection and identification routine, and their fractal structure are some of the most popular indices successfully applied in ecoacoustics. Ecoacoustics offers great opportunities to investigate ecological complexity across a full range of operational scales (from individual species to landscapes), but requires an implementation of its foundations and of quantitative metrics to ameliorate its competency on physical, biological, and anthropic sonic contexts.
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