Depleted cultural richness of an avian vocal mimic in fragmented habitat
Depleted cultural richness of an avian vocal mimic in fragmented habitat
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支离破碎的栖息地中鸟类声音模仿的文化丰富性被耗尽
DOI：
10.1111/ddi.13646
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发表时间：
2022
影响因子：
4.6
通讯作者：
Dalziell, Anastasia H.
中科院分区：
文献类型：
--
作者：
Backhouse, Fiona;Welbergen, Justin A.;Magrath, Robert D.;Dalziell, Anastasia H.
AimConservation最近转向包括行为或文化多样性，为保护工作增加了实质性的价值。栖息地的丧失和破碎化会减少歌曲导师的可用性，从而耗尽鸟类鸣叫等习得行为的多样性，但人们对这些影响知之甚少。通过异种模型和同种导师的减少，声音模仿可能对栖息地的丧失和碎片化特别敏感。在这里，我们研究了栖息地可用性与雄性阿尔伯特琴鸟（Menura alberti）的模仿曲目大小和歌曲组成之间的关系，阿尔伯特琴鸟是一种以其卓越的模仿能力而闻名的近濒危物种。LocationEastern澳大利亚。方法根据该物种分布范围内的雄性七弦琴的录音资料，计算其演奏曲目的大小和组成。利用物种分布模型和遥感植被类型估算斑块大小和当地生境可用性。我们通过物种分布模型和自动声学探测器来评估本地模式物种组合。结果在较小的生境斑块或适宜生境比例较低的地区，雄性个体模仿的模式物种较少，发声类型较少。然而，与较大斑块或更完整栖息地的个体相比，它们模仿每个模式物种的发声次数相对更多。所有的模式物种都可能出现在大多数研究地点，这表明物种的多样性不是由模式物种的可用性驱动的。结论栖地可利用性通过琴鸟导师的数量影响琴鸟的模仿曲目大小。此外，受到干扰的栖息地中的个体可能会通过模仿每个物种的更多发声来部分补偿模仿较少物种的行为。这项研究支持了一个假设，即文化多样性可能会因栖息地的丧失和破碎化而变得贫瘠，就像遗传多样性一样。因此，鸣叫多样性的变化可能表明种群健康状况，并突出种群特别需要采取保护行动。
AimConservation has recently shifted to include behavioural or cultural diversity, adding substantial value to conservation efforts. Habitat loss and fragmentation can deplete diversity in learnt behaviours such as bird song by reducing the availability of song tutors, yet these impacts are poorly understood. Vocal mimicry may be particularly sensitive to habitat loss and fragmentation through the resulting reduction in both heterospecific models and conspecific tutors. Here we examine the relationship between habitat availability and both mimetic repertoire size and song composition in male Albert's lyrebirds (Menura alberti), a near‐threatened species renowned for its remarkable mimetic abilities.LocationEastern Australia.MethodsWe calculated repertoire size and composition from recordings of male Albert's lyrebirds from throughout the species' range. We estimated patch size and local habitat availability using a species distribution model and remotely sensed vegetation types. We assessed the local model species assemblage through species distribution models and automated acoustic detectors.ResultsIndividual males in smaller habitat patches, or in areas with a lower proportion of suitable habitat, mimicked fewer model species and fewer vocalization types. However, they mimicked comparatively more vocalizations from each model species than individuals in larger patches or with more intact habitats. All model species were likely to occur in most study sites, suggesting that repertoires are not driven by the availability of model species.Main ConclusionsOur results suggest that mimetic repertoire sizes are influenced by habitat availability through the number of lyrebird tutors. Further, individuals in disturbed habitats may partially compensate for mimicking fewer species by mimicking more vocalizations from each species. This study supports the hypothesis that cultural diversity may be impoverished by habitat loss and fragmentation in a similar way to genetic diversity. Variation in song diversity may therefore indicate population health and highlight populations in particular need of conservation action.
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影响因子：
5.7
作者：
Laiolo, P;Tella, JL
通讯作者：
Tella, JL
随机分析：巢寄生草尾维达鸟鸣声的拟态、地理变异和文化进化
DOI：
--
发表时间：
2000
期刊：
影响因子：
--
作者：
R. B. Payne;Jean L. Woods;M. Siddall;C. Parr
通讯作者：
C. Parr
欧洲鸣禽的混唱——回顾
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
H. Helb;F. Dowsett;H. Bergmann;Klaus Conrads
通讯作者：
Klaus Conrads
影响因子：
2.5
作者：
Dalziell, Anastasia H.;Welbergen, Justin A.;Magrath, Robert D.
通讯作者：
Magrath, Robert D.
通过 bestNormalize 寻找最佳标准化变换
DOI：
--
发表时间：
2021
期刊：
The R Journal
影响因子：
--
作者：
Ryan A. Peterson
通讯作者：
Ryan A. Peterson