Tracking aquatic non-native macroinvertebrate species in Germany using long-term data

IF 6 3区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Environmental Sciences Europe Pub Date : 2024-09-10 DOI:10.1186/s12302-024-00986-7
Phillip J. Haubrock, Irmak Kurtul, Antonín Kouba
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Abstract

Biological invasions pose a global challenge, threatening both biodiversity and human well-being. Projections suggest that as invasions increase, the financial costs associated with management and the ecological harm they cause will also escalate. Here, we examined whether long-term biomonitoring strategies were adequate to identify and track benthic aquatic non-native macroinvertebrate species by using the German subset (151 time series; 129 of which reported non-native species) of the currently most comprehensive European long-term dataset of 1816 macroinvertebrate community time series from 22 European countries. The detection of aquatic non-native species was directly linked to the availability of long-term sites and thus, monitoring effort, having identified the spatio-temporal occurrence of 32 non-native species. The available long-term monitoring site data were mostly concentrated in the western part of Germany, predominantly covering the Rhine River and its tributaries. The spatially biased network of long-term monitoring sites, therefore, naturally skews the detection and reporting of aquatic non-native species toward this area and underestimates Eastern and Southern regions, impeding the comprehension of invasion dynamics. However, based on the available data, we found that the absolute number of non-native species increased and the proportion of non-native species relative to native species decreased over time. This indicates complex ecological interactions between native and non-native species and underlines the value of long-term data for investigating invasion dynamics. Considering the value of comprehensive monitoring networks, a spatially biased network delays the application of management and mitigation plans, possibly worsening the ecological and economic effects of biological invasions in Germany. The results provided here indicate the disadvantages of biased datasets, but simultaneously underline the enormous potential of a dense network of long-term monitoring. Our results also highlight the urgent need to increase and diversify long-term biomonitoring efforts throughout Germany to cover the main freshwater resources and their connections where the introduction risk of non-native species is the highest. Centrally collating such data would provide a profound basis for the monitoring of spreading aquatic non-native species and could serve the implementation of national biosecurity efforts.

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利用长期数据追踪德国水生非本地大型无脊椎动物物种
生物入侵是一项全球性挑战,威胁着生物多样性和人类福祉。据预测,随着入侵的增加,与管理相关的经济成本及其造成的生态危害也将不断攀升。在此,我们利用目前最全面的欧洲长期数据集(来自 22 个欧洲国家的 1816 个大型无脊椎动物群落时间序列)中的德国子集(151 个时间序列;其中 129 个报告了非本地物种),研究了长期生物监测策略是否足以识别和跟踪底栖水生非本地大型无脊椎动物物种。水生非本地物种的发现与是否有长期监测点直接相关,因此也与监测工作有关,已确定了 32 个非本地物种的时空出现情况。现有的长期监测点数据主要集中在德国西部,主要覆盖莱茵河及其支流。因此,有空间偏差的长期监测点网络自然会使水生非本地物种的检测和报告偏向于这一地区,而低估了东部和南部地区,从而阻碍了对入侵动态的理解。不过,根据现有数据,我们发现随着时间的推移,非本地物种的绝对数量在增加,而非本地物种相对于本地物种的比例在下降。这表明本地物种与非本地物种之间存在复杂的生态互动关系,也凸显了长期数据对研究入侵动态的价值。考虑到综合监测网络的价值,有空间偏差的网络会延误管理和缓解计划的实施,可能会恶化德国生物入侵的生态和经济影响。本文提供的结果表明了有偏差的数据集的缺点,但同时也强调了密集的长期监测网络的巨大潜力。我们的研究结果还突出表明,迫切需要在德国各地增加长期生物监测工作并使其多样化,以覆盖非本地物种引入风险最高的主要淡水资源及其连接点。集中整理这些数据将为监测水生非本地物种的扩散提供深厚的基础,并有助于实施国家生物安全工作。
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来源期刊
Environmental Sciences Europe
Environmental Sciences Europe Environmental Science-Pollution
CiteScore
11.20
自引率
1.70%
发文量
110
审稿时长
13 weeks
期刊介绍: ESEU is an international journal, focusing primarily on Europe, with a broad scope covering all aspects of environmental sciences, including the main topic regulation. ESEU will discuss the entanglement between environmental sciences and regulation because, in recent years, there have been misunderstandings and even disagreement between stakeholders in these two areas. ESEU will help to improve the comprehension of issues between environmental sciences and regulation. ESEU will be an outlet from the German-speaking (DACH) countries to Europe and an inlet from Europe to the DACH countries regarding environmental sciences and regulation. Moreover, ESEU will facilitate the exchange of ideas and interaction between Europe and the DACH countries regarding environmental regulatory issues. Although Europe is at the center of ESEU, the journal will not exclude the rest of the world, because regulatory issues pertaining to environmental sciences can be fully seen only from a global perspective.
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