Anne-Christine Mupepele, Niels Hellwig, Petra Dieker, Alexandra-Maria Klein
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引用次数: 0
Abstract
Background: Wild bees have attracted growing attention from both the scientific community and civil society, alongside increasing evidence of biodiversity losses. Declining wild bee populations threaten both the quality and quantity of pollination, which also affect crop production and are therefore critically important for human wellbeing. Landscape homogenisation, land use changes, land use intensity, and climate change are driving the decline. Despite concerns about the wild bee decline, knowledge of wild bee population patterns and long-term trends across Germany remains limited. Here, we present a systematic map, including a newly developed comprehensive database that compiles available data on temporal trends in wild bee communities across Germany. Our goal is to provide an overview of the frequency of wild bee trend studies over time and the land use types and geographical areas they have covered.
Methods: Our search for data on wild bee trends was conducted in November 2020 and included peer-reviewed literature (from Web of Science databases and Scopus) and grey literature in English and in German. After screening the literature by title and abstract, relevant data were extracted from eligible studies. All eligible studies included data on wild bee taxa from at least two years at the same site within Germany and using the same sampling method. The database consists of data sheets on studies (bibliographic context), on covariates (methodological and spatio-temporal context) and on data (bee species sampled at a specific time on a specific location - exemplarily for two German regions).
Review findings: The database contains 382 studies out of 24,486 initial records. Nearly 75% of the full texts screened did not include field data on wild bees from at least two different years and were therefore excluded. Studies date back to the 1880s, with a consistently high number of studies since the 1990s. Most studies were published in German-language journals of entomological societies in Germany. Data originate from different types of land use throughout the country, mostly from southern and north-western Germany and from urban areas.
Conclusions: The systematic map shows that there is a lack of long-term monitoring studies. Moreover, there are research gaps in land use categories and federal states, which hinder more regional or land use-specific analyses. We encourage researchers and practitioners to use the database for further analyses on bee trends and their drivers, and the potential success of mitigation measures.
背景:随着越来越多的生物多样性丧失的证据,野生蜜蜂引起了科学界和民间社会越来越多的关注。野生蜜蜂数量的减少威胁到授粉的质量和数量,这也影响到作物生产,因此对人类福祉至关重要。景观同质化、土地利用变化、土地利用强度和气候变化是导致这种下降的原因。尽管人们担心野生蜜蜂数量下降,但对德国野生蜜蜂种群模式和长期趋势的了解仍然有限。在这里,我们展示了一个系统的地图,包括一个新开发的综合数据库,该数据库汇集了德国各地野生蜜蜂群落的时间趋势数据。我们的目标是概述一段时间以来野生蜜蜂趋势研究的频率,以及它们所覆盖的土地利用类型和地理区域。方法:我们于2020年11月对野生蜜蜂趋势的数据进行了搜索,包括同行评议的文献(来自Web of Science数据库和Scopus)以及英语和德语的灰色文献。通过题目和摘要筛选文献后,从符合条件的研究中提取相关资料。所有符合条件的研究都包括在德国同一地点使用相同采样方法至少两年的野生蜜蜂分类群数据。该数据库包括关于研究(书目背景)、关于协变量(方法和时空背景)和关于数据(在特定时间、特定地点取样的蜜蜂物种- -例如德国两个地区)的数据表。审查结果:该数据库包含24,486项初始记录中的382项研究。近75%的筛选全文不包括至少两个不同年份的野生蜜蜂的实地数据,因此被排除在外。研究可以追溯到19世纪80年代,自20世纪90年代以来,研究数量一直很高。大多数研究发表在德国昆虫学会的德语期刊上。数据来自全国各地不同类型的土地使用,主要来自德国南部和西北部以及城市地区。结论:系统图谱显示缺乏长期监测研究。此外,土地利用类别和联邦州的研究存在差距,这阻碍了更多的区域或土地利用特定分析。我们鼓励研究人员和从业人员利用该数据库进一步分析蜜蜂趋势及其驱动因素,以及缓解措施可能取得的成功。
期刊介绍:
Environmental Evidence is the journal of the Collaboration for Environmental Evidence (CEE). The Journal facilitates rapid publication of evidence syntheses, in the form of Systematic Reviews and Maps conducted to CEE Guidelines and Standards. We focus on the effectiveness of environmental management interventions and the impact of human activities on the environment. Our scope covers all forms of environmental management and human impacts and therefore spans the natural and social sciences. Subjects include water security, agriculture, food security, forestry, fisheries, natural resource management, biodiversity conservation, climate change, ecosystem services, pollution, invasive species, environment and human wellbeing, sustainable energy use, soil management, environmental legislation, environmental education.