Italian National Institute for Environmental Protection and Research (ISPRA), Brondolo No. 5, 30015 Chioggia, VE, Italy.
Centre for Estuarine, Coastal and Marine Sciences (CEMAS), Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy.
Int J Environ Res Public Health. 2022 Apr 15;19(8):4838. doi: 10.3390/ijerph19084838.
Responses of the macrozoobenthic community to an ecological restoration activity in the northern Venice lagoon were studied, within the scope of the project LIFE SEagrass RESTOration aimed at recreating aquatic phanerogam meadows largely reduced in recent decades. Transplants were successful in almost all project areas. Macrozoobenthos was sampled in eight stations before (2014) and after (2015, 2016, 2017) transplanting activities. An increase in abundance and fluctuations in richness and univariate ecological indices (Shannon's, Margalef's, Pielou's indices) resulted during the years. Comparing non-vegetated and vegetated samples in 2017, every index except Pielou's increased in the latter. Multivariate analysis (hierarchical cluster analysis, MDS, PERMDISP, SIMPER) grouped samples by localization rather than years, with differences between stations due to the abundance of common species. In 2017, results were also grouped by the presence or absence of aquatic plants, with differences in the abundance of grazer and filter-feeding species. Results of ecological index M-AMBI depicted conditions from moderate to good ecological status (sensu Dir.2000/60/EC) with similar fluctuations, as presented by univariate indices from 2014 to 2017. Responses of the macrozoobenthic community were more evident when comparing vegetated and non-vegetated samples, with the vegetated areas sustaining communities with greater abundance and diversity than non-vegetated samples, thus demonstrating the supporting function of aquatic plants to benthic communities.
本研究调查了生态修复活动对北方威尼斯泻湖大型底栖动物群落的影响，该项目旨在恢复近年来大量减少的水生植物草地。移植在几乎所有项目区都取得了成功。在移植活动之前（2014 年）和之后（2015 年、2016 年和 2017 年），在八个站位采集了大型底栖动物样本。在这些年中，生物量增加，丰富度和单变量生态指数（香农指数、玛格丽夫指数、皮埃罗指数）波动。2017 年，比较非植被和植被样本时，除皮埃罗指数外，其他指数均在后者中增加。多元分析（层次聚类分析、MDS、PERMDISP、SIMPER）按定位而不是按年份对样本进行分组，由于常见物种的丰度不同，站位之间存在差异。2017 年，还根据水生植物的存在与否对结果进行分组，食草动物和滤食动物的丰度存在差异。生态指数 M-AMBI 的结果描绘了 2000/60/EC 指令规定的从中等到良好生态状况的条件，与 2014 年至 2017 年的单变量指数相似波动。当比较植被和非植被样本时，大型底栖动物群落的反应更为明显，植被区维持的群落生物量和多样性大于非植被区，从而证明水生植物对底栖群落具有支持功能。
