Environmental legacy of aquaculture and industrial activities in mangrove ecosystems

IF 2.1 4区 地球科学 Q2 MARINE & FRESHWATER BIOLOGY
Aninditia Sabdaningsih , Dini Adyasari , Suryanti Suryanti , Sigit Febrianto , Yuriza Eshananda
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Abstract

Aquaculture and industrial activities have been recognized for their detrimental impact on coastal environment, particularly through large-scale mangrove conversion. This study employs interdisciplinary spatial, geochemical, and metagenomic approaches to examine the environmental legacy of past aquaculture and industrial activities in mangrove rehabilitation areas. The land use change of mangrove, aquaculture, and industrial area was investigated from 1990 to 2020. Mangrove coverage increased in the study area from 49.12 ha in year 1990 to 95.93 ha in 2020. This growth can be attributed to increasing environmental awareness related to issues such as tidal flooding, seawater intrusion, and coastal abrasion. However, despite increasing mangrove coverage, we still identified fecal bacteria communities in both sites, dominated by Campylobacteria, Gammaproteobacteria, and Deltaproteobacteria. Additionally, our functional prediction analysis revealed the presence of genes associated with pathogenicity, multidrug/antibiotic resistance, and xenobiotic degradation. We observed high nitrate concentration associated with aquaculture waste that was persistent in porewater even after the activity ended years ago. Low to moderate heavy metal concentration was found in the study sites, likely due to the role of mangroves as a biofilter. We conclude that mangrove restoration contributes to the lower environmental impact of anthropogenic activities on our sites. Therefore, it should be included in future coastal management plans to improve coastal water quality and ecosystem function in environmentally threatened areas.

红树林生态系统中水产养殖和工业活动的环境遗产
人们认识到水产养殖和工业活动对沿海环境的有害影响,特别是通过大规模改变红树林。本研究采用跨学科的空间、地球化学和宏基因组方法来研究红树林恢复地区过去水产养殖和工业活动的环境遗产。对1990 ~ 2020年红树林、养殖区和工业区土地利用变化进行了调查。研究区红树林覆盖面积从1990年的49.12 ha增加到2020年的95.93 ha。这种增长可归因于与潮汐洪水、海水入侵和海岸磨损等问题有关的环境意识的提高。然而,尽管红树林覆盖率增加,我们仍然在两个地点发现了粪便细菌群落,以弯曲菌,γ变形菌和三角洲变形菌为主。此外,我们的功能预测分析揭示了与致病性、多药/抗生素耐药性和外源降解相关的基因的存在。我们观察到,即使在多年前活动结束后,与水产养殖废物有关的高硝酸盐浓度仍持续存在于孔隙水中。在研究地点发现了低至中等的重金属浓度,可能是由于红树林作为生物过滤器的作用。我们的结论是,红树林的恢复有助于降低人为活动对我们站点的环境影响。因此,应将其纳入未来的沿海管理计划,以改善环境受威胁地区的沿海水质和生态系统功能。
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来源期刊
Journal of Sea Research
Journal of Sea Research 地学-海洋学
CiteScore
3.20
自引率
5.00%
发文量
86
审稿时长
6-12 weeks
期刊介绍: The Journal of Sea Research is an international and multidisciplinary periodical on marine research, with an emphasis on the functioning of marine ecosystems in coastal and shelf seas, including intertidal, estuarine and brackish environments. As several subdisciplines add to this aim, manuscripts are welcome from the fields of marine biology, marine chemistry, marine sedimentology and physical oceanography, provided they add to the understanding of ecosystem processes.
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