Surveys of the bee (Hymenoptera: Apiformes) community in a Neotropical savanna using pan traps

Viana, Thaís Andrade; Lourenço, A. P.

doi:10.11606/1807-0205/2020.60.31

Cited by 4 publications

(1 citation statement)

References 59 publications

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“…Thus, we find ourselves in a situation of aggravating loss of the diversity of bees, and we do not even know many of the species in the national territory. Although research on the diversity of Brazilian bee fauna has occurred frequently in recent years (Viana & Lourenço, 2020;Almeida et al, 2019), the vastness of the Brazilian territory prevents all areas from being covered with this type of work, thus leaving some regions lacking such information, mainly restricted access regions, such as islands off the Brazilian coast, for example.…”

Section: Introductionmentioning

confidence: 99%

Bees from an Island in the Delta of the Americas (Maranhão state, Brazil) and their Floristic Interactions

et al. 2021

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Surveys of the bee fauna on islands are scarce due to the difficult access to the study area. Thus, the current study intended to establish the species of bees present in an island of the Delta of the Americas, called Grande do Paulino, Tutóia, Maranhão. Together with the bees, the plants visited by these insects were recorded, in order to document the relationships between these organisms. Between July 2017 and June 2018, once a month, 1,095 individuals, distributed in 16 tribes, 30 genera, and 48 species, were collected with active (entomological net) and passive (bowl traps) sampling methods. Data from plants and their visiting bees are presented in an interaction network in the form of a bipartite graph, showing Xylocopa cearensis as the most collected bee species, and Chamaecrista ramosa as the most visited plant by bees. In addition to providing information about the bee fauna of the state of Maranhão and, consequently, from the Brazilian northeast, this study explores the apifauna of a place never before explored and, because it is an island, of difficult access, also providing information about the floristic interactions of these insects.

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Section: Introductionmentioning

confidence: 99%

Bees from an Island in the Delta of the Americas (Maranhão state, Brazil) and their Floristic Interactions

et al. 2021

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The Orchid Bee Fauna (Hymenoptera: Apidae: Euglossini) of a Neotropical Savanna: an Efficient Protocol to Assess Bee Community and Diversity Along Elevational and Habitat Complexity Gradients

2021

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How far should adjacent pan traps be placed for bee sampling?

McKinney,

Karimzadeh,

Park

2024

Entomological Science

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Among several methods of active and passive sampling bees (Hymenoptera: Apoidea), pan traps, also known as bee bowls, are commonly utilized for their efficiency and as a means of avoiding collector bias. When comparing pan‐trap samples using traditional statistical methods, the assumption of independence among samples needs to be met. To determine the necessary distance between pan traps to obtain independent samples, we investigated spatial dependence in bee catches using pan traps at four sites. At each site, a regular grid of pan traps was laid out, with each sample having two colors of fluorescent trap (i.e. blue and yellow). These trap pairs were separated by 10 m, with 100–109 points in the grid. In addition, five points within the grid were chosen randomly, and an additional 40 traps were placed at 2 m and 4 m from the five sample points to sample bees at a minimum 2 m trap distance. Traps collected bees for five consecutive days and bees were counted for each point and each trap color. Bee count data were analyzed using geostatistics to determine the spatial dependency in trap catches for yellow traps, blue traps, and both colors combined. The highest value of the range parameter of the semivariogram found across the four sites and pan trap colors was 17 m for blue traps. From this, we recommend a conservative minimum distance of 17 m between adjacent pan traps to obtain spatially independent samples for optimizing sampling plans when independent samples are necessary.

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Surveys of the bee (Hymenoptera: Apiformes) community in a Neotropical savanna using pan traps

Cited by 4 publications

References 59 publications

Bees from an Island in the Delta of the Americas (Maranhão state, Brazil) and their Floristic Interactions

Bees from an Island in the Delta of the Americas (Maranhão state, Brazil) and their Floristic Interactions

The Orchid Bee Fauna (Hymenoptera: Apidae: Euglossini) of a Neotropical Savanna: an Efficient Protocol to Assess Bee Community and Diversity Along Elevational and Habitat Complexity Gradients

How far should adjacent pan traps be placed for bee sampling?

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