SMALL-SCALE VARIATION IN TRAP PLACEMENT AFFECTS ARTHROPOD CAPTURE RATES ON STICKY TRAPS IN RIPARIAN WOODLANDS

IF 0.2 4区 环境科学与生态学 Q4 Agricultural and Biological Sciences Southwestern Naturalist Pub Date : 2022-11-04 DOI:10.1894/0038-4909-66.4.275
D. LaRoche, C. Conway, Chris Kirkpatrick
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引用次数: 0

Abstract

Abstract Arthropods are important prey for many avian taxa, particularly during the breeding season. Many studies have used sticky traps to estimate relative abundance of arthropods as avian prey, but we know little about the potential biases associated with sticky traps. We evaluated the effect of small-scale variation in trap placement on the biomass of arthropods caught on sticky traps in six riparian woodlands in southeastern Arizona. We detected differences in arthropod biomass between two height categories (1 and 4 m off the ground) for three insect orders and between two sampling locations (0 and 10 m from the center of the stream bed) for two insect orders. These differences indicate that placement of sticky traps affects arthropod capture rates and, hence, small variation in trap placement can bias investigators' ability to document spatial and temporal differences in arthropod abundance. Investigators who use sticky traps to make comparisons of arthropod abundance need to ensure that placement is consistent over time or across treatments to ensure that comparisons are not biased. Resumen Los artrópodos son presas importantes para muchos taxones de aves, especialmente durante la temporada de reproducción. Muchos estudios han utilizado trampas adhesivas para estimar la abundancia relativa de artrópodos como presas aviares, pero sabemos poco sobre los posibles sesgos asociados con las trampas adhesivas. Evaluamos el efecto de la variación en la colocación de trampas a pequeña escala en la biomasa de artrópodos atrapados en trampas adhesivas en seis bosques ribereños en el sureste de Arizona. Detectamos diferencias en la biomasa de artrópodos entre dos categorías de altura (1 y 4 m del suelo) para tres órdenes de insectos y entre dos ubicaciones de muestreo (0 y 10 m del centro del lecho del arroyo) para dos órdenes de insectos. Estas diferencias indican que la ubicación de las trampas adhesivas afecta las tasas de captura de artrópodos y, por lo tanto, una pequeña variación en la ubicación de las trampas puede sesgar la capacidad de los investigadores para documentar las diferencias espaciales y temporales en la abundancia de artrópodos. Los investigadores que usan trampas adhesivas para hacer comparaciones de la abundancia de artrópodos deben asegurarse de que la ubicación sea consistente a lo largo del tiempo o entre tratamientos para garantizar que las comparaciones no estén sesgadas.
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河岸林地粘捕器设置的小尺度变化影响了粘捕器对节肢动物的捕获率
摘要节肢动物是许多鸟类类群的重要猎物,特别是在繁殖季节。许多研究使用粘性陷阱来估计鸟类捕食者等节肢动物的相对丰度,但我们对与粘性陷阱相关的潜在偏差知之甚少。我们评估了陷阱放置中的小规模变化对亚利桑那州东南部六片河岸林地中被困在粘性陷阱中的节肢动物生物量的影响。我们检测到三个昆虫目的两个高度类别(离地1至4米)和两个昆虫目的两个采样位置(离河床中心0至10米)之间节肢动物生物量的差异。这些差异表明,放置粘性陷阱会影响节肢动物的捕获率,因此陷阱放置的微小变化可能会影响研究人员记录节肢动物丰度时空差异的能力。使用粘性陷阱对节肢动物丰度进行比较的研究人员需要确保放置在时间上或治疗之间是一致的,以确保比较不受偏见。摘要节肢动物是许多鸟类分类群的重要猎物,特别是在繁殖季节。许多研究使用粘附陷阱来估计鸟类猎物等节肢动物的相对丰度,但我们对与粘附陷阱相关的可能偏差知之甚少。我们评估了亚利桑那州东南部六个河岸森林中小型陷阱放置变化对被困在粘附陷阱中的节肢动物生物量的影响。我们检测到三个昆虫目的两个高度类别(离地面1至4米)和两个昆虫目的两个采样位置(离河床中心0至10米)之间节肢动物生物量的差异。这些差异表明,粘附陷阱的位置会影响节肢动物的捕获率,因此,陷阱位置的微小变化可能会扭曲研究人员记录节肢动物丰度时空差异的能力。使用粘附陷阱进行节肢动物丰度比较的研究人员必须确保随着时间的推移或治疗之间的位置一致,以确保比较没有偏见。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Southwestern Naturalist
Southwestern Naturalist 环境科学-生态学
CiteScore
0.50
自引率
50.00%
发文量
47
审稿时长
18-36 weeks
期刊介绍: The Southwestern Naturalist (a publication of the Southwestern Association of Naturalists since 1953) is an international journal (published quarterly) that reports original and significant research in any field of natural history. This journal promotes the study of plants and animals (living and fossil) in the multinational region that includes the southwestern United States, Mexico, and Central America. Appropriate submission of manuscripts may come from studies conducted in the countries of focus or in regions outside this area that report significant findings relating to biota occurring in the southwestern United States, Mexico, and Central America. Publication is in English, and manuscripts may be feature articles or notes. Feature articles communicate results of completed scientific investigations, while notes are reserved for short communications (e.g., behavioral observations, range extensions, and other important findings that do not in themselves constitute a comprehensive study). All manuscripts (feature articles and notes) require an abstract in both English and Spanish.
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