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首页> 外文期刊>The Naturalist >Gains and losses of the Andrena and Panurgus mining bees (Hym., Andrenidae) in Watsonian Yorkshire
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Gains and losses of the Andrena and Panurgus mining bees (Hym., Andrenidae) in Watsonian Yorkshire

机译：沃森尼亚约克郡的Andrena和Panurgus采矿蜜蜂（Hym。，Andrenidae）的盈亏

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摘要

The aims of this paper are to assess the gains and losses of species of the Andrenidae from the 19th century until 2012 and to try to assess changes in their abundance during the first and last fifty years of the 20th century. All the records are derived from the Watsonian Yorkshire electronic database. To 2012 this database consists of 33,752 records, of which 4,690 are records of the Andrenidae.Yorkshire quality coding for the solitary aculeates is based on the number of 1km squares in which each species has been found. Currently to 2010 there are four categories of more or less equal numbers of species: Rare (wasps: 1-7; bees: 1-10), Occasional (wasps: 8-23; bees: 11-27), Frequent (wasps: 24-44; bees: 29-68) and Common (wasps: 46-122; bees: 69-238). The solitary wasps and bees are treated separately since bees are represented by more records.
机译：本文的目的是评估从19世纪到2012年的Andrenidae物种的得失，并试图评估20​​世纪前50年和最后50年中它们的丰度变化。所有记录均来自Watsonian Yorkshire电子数据库。到2012年，该数据库由33,752条记录组成，其中4,690条是ren科的记录。约克夏对单独的针形目的质量编码是基于发现每种物种的1 km平方数。目前到2010年，共有四类或多或少相等的物种：稀有（黄蜂：1-7;蜜蜂：1-10），偶然（黄蜂：8-23;蜜蜂：11-27），频繁（黄蜂： 24-44;蜜蜂：29-68）和普通（黄蜂：46-122;蜜蜂：69-238）。由于更多的记录代表蜜蜂，所以单独对黄蜂和蜜蜂进行单独处理。

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