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首页> 外文期刊>Ecological research >Temporal shifts and niche overlapping in Copestylum (Diptera, Syrphidae) communities reared in cactus species in a central Mexican scrubland
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Temporal shifts and niche overlapping in Copestylum (Diptera, Syrphidae) communities reared in cactus species in a central Mexican scrubland

机译：在墨西哥中部灌木丛中的仙人掌物种中饲养的Copestylum（Diptera，Syrphidae）群落中的时间变化和生态位重叠

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摘要

Semiarid scrubland communities are highly dy-namic in terms of their species composition, abundance, and functioning, given the drastic changes in climate among seasons. Spatiotemporal patterns of sapropha-gous Copestylum (Diptera: Syrphidae) communities in different cactus species richness have not yet been studied, although seasonal changes and plant species richness have been shown to strongly impact the diversity and distri-bution of many insect communities in scrublands. We analyzed the impact of seasonality and of habitat type (disturbed and undisturbed) on Copestylum communities reared from cactus species at the Barranca de Metztitlan Biosphere Reserve, in central Mexico, by comparing their community structure between seasons and habitats, and assessing the contribution of diversity components for the total diversity of this genus. We also measured patterns of temporal niche overlap among hoverfly species consider-ing their breeding medium. Seasonal variation influenced Copestylum community composition most significantly. Species richness and abundance of Copestylum were higher in the rainy season. Additive partitioning of diversity showed that the main component for species richness is beta diversity between seasons. We detected high niche overlap during the dry season and low overlap during the rainy season. This study provides evidence of temporal shifts in xeric hoverfly communities and suggests that the Copestylum species partition resources over time.
机译：考虑到季节之间气候的剧烈变化，半干旱灌木丛群落的物种组成，数量和功能高度动态。尽管研究表明季节变化和植物物种丰富度强烈影响灌木丛中许多昆虫群落的多样性和分布，但尚未研究不同仙人掌物种丰富度下的腐烂天牛（Diptera：Syrphidae）群落的时空分布。我们通过比较墨西哥中部Barranca de Metztitlan生物圈保护区的仙人掌物种饲养的Copestylum群落的季节和栖息地类型（受干扰和未受干扰）的影响，比较了季节和栖息地之间的群落结构，并评估了多样性的贡献。组成该属的总多样性。考虑到它们的繁殖媒介，我们还测量了hoverfly物种之间的时间生态位重叠模式。季节变化对Copestylum群落组成的影响最大。在雨季，pe足类的物种丰富度和丰度较高。多样性的加性划分表明，物种丰富度的主要组成部分是季节之间的β多样性。我们在干旱季节检测到高生态位重叠，而在雨季检测到低生态位重叠。这项研究提供了旱生的蚜蝇群落时间变化的证据，并表明Copestylum物种随时间分配资源。

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  • 来源
    《Ecological research》 |2011年第2期|p.341-350|共10页
  • 作者

    Ana Paola Martinez-Falcon; Ma. Angeles Marcos-Garcia; Claudia E. Moreno;

  • 作者单位

    Centro Iberoamericano de la Biodiversidad, CIBIO,Instituto de Investigation, Universidad de Alicante,Campus Universitario San Vicente del Raspeig,03080 Alicante, Spain;

    Centro Iberoamericano de la Biodiversidad, CIBIO,Instituto de Investigation, Universidad de Alicante,Campus Universitario San Vicente del Raspeig,03080 Alicante, Spain;

    Centro de Investigaciones Biologicas,Universidad Autonoma del Estado de Hidalgo,Apartado postal 69 Plaza Juarez,C.P. 42001, Pachuca, Hidalgo, Mexico;

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  • 正文语种 eng
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  • 关键词

    biodiversity; diversity partitioning; hoverflies; saprophagous larvae; xeric habitats;

    机译：生物多样性;多样性划分;盘旋腐烂的幼虫;干燥生境;

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