Eucera longicornis is a rare solitary bee that is in decline throughout its range in Britain and other European countries. Two nest aggregations that had been previously discovered in 2014 on land owned and managed by Gatwick Airport, Southern England, were studied in 2017, 2018 and 2019 to obtain information relevant to their conservation. Population estimates using mark recapture showed that the larger aggregation had a maximum population estimate of 659 individuals in 2018, with the smaller aggregation reaching a maximum population estimate of 221 in 2019. In terms of foraging requirements, microscopic analysis of pollen samples from females returning from their nests identified a total of 12 plant taxa across all years and both aggregations. Fabaceae pollen was present in 100% of samples and on average comprised 90% of each sample, indicating that the species is oligolectic. Both nest aggregations were on sloping banks of exposed soil arising from land management by the airport in 1999. Floral surveys of the landscape indicate that within 100 m of both aggregations Fabaceae species are the most abundant due to the presence of a legume rich wildflower meadow alongside the adjacent river Mole, which was sown by Gatwick Airport. Eucera longicornis at Gatwick Airport are an example of how if managed appropriately, industrial areas can provide valuable refuges for rare wildlife. Although there is no imminent risk of the populations going extinct, management and monitoring suggestions are provided to ensure these populations persist.

中文翻译：

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盖特威克机场稀有独蜂 Eucera longcornis 巢群的种群评估和觅食生态学及其管理意义

Eucera longicornis 是一种罕见的独居蜜蜂，在英国和其他欧洲国家的整个范围内都在下降。此前于 2014 年在英格兰南部盖特威克机场拥有和管理的土地上发现的两个巢群，于 2017、2018 和 2019 年进行了研究，以获得与其保护相关的信息。使用标记重新捕获的种群估计表明，较大的聚集体在 2018 年的最大种群估计为 659 只，较小的聚集体在 2019 年达到最大种群估计为 221 只。他们的巢穴在所有年份和两个集合中总共确定了 12 个植物分类群。豆科花粉存在于 100% 的样品中，平均占每个样品的 90%，表明该物种是寡聚的。两个巢群都位于 1999 年机场土地管理产生的裸露土壤的倾斜堤岸上。景观的花卉调查表明，在两个群落的 100 m 范围内豆科物种最为丰富，因为旁边有一片富含豆科植物的野花草甸相邻的鼹鼠河，由盖特威克机场播种。盖特威克机场的长角桉就是一个例子，说明如果管理得当，工业区可以为稀有野生动物提供宝贵的避难所。虽然种群灭绝的风险并不迫在眉睫，但提供了管理和监测建议，以确保这些种群持续存在。景观花卉调查表明，在两个聚集体的 100 m 范围内，豆科植物种类最为丰富，因为在毗邻的鼹鼠河旁边存在着豆科植物丰富的野花草甸，该草甸由盖特威克机场播种。盖特威克机场的长角桉就是一个例子，说明如果管理得当，工业区可以为稀有野生动物提供宝贵的避难所。虽然种群灭绝的风险并不迫在眉睫，但提供了管理和监测建议，以确保这些种群持续存在。景观花卉调查表明，在两个聚集体的 100 m 范围内，豆科植物种类最为丰富，因为在毗邻的鼹鼠河旁边存在着豆科植物丰富的野花草甸，该草甸由盖特威克机场播种。盖特威克机场的长角桉就是一个例子，说明如果管理得当，工业区可以为稀有野生动物提供宝贵的避难所。虽然种群灭绝的风险并不迫在眉睫，但提供了管理和监测建议，以确保这些种群持续存在。盖特威克机场的长角桉就是一个例子，说明如果管理得当，工业区可以为稀有野生动物提供宝贵的避难所。虽然种群灭绝的风险并不迫在眉睫，但提供了管理和监测建议，以确保这些种群持续存在。盖特威克机场的长角桉就是一个例子，说明如果管理得当，工业区可以为稀有野生动物提供宝贵的避难所。虽然种群灭绝的风险并不迫在眉睫，但提供了管理和监测建议，以确保这些种群持续存在。