Evaluation of ecological risk analysis for benthic macroinvertebrates in paddy fields in the Meriç–Ergene River Basin (Turkish Thrace)

IF 0.9 4区环境科学与生态学 Q4 OCEANOGRAPHY

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI:10.26881/oandhs-2022.2.09

G. Aydin, B. Çamur-Elipek

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引用次数: 1

Abstract

Abstract Benthic macroinvertebrates are very important components of aquatic environments, and monitoring their population dynamics helps us understand the effects of environmental factors on ecosystems. This study aimed to determine the dynamics of benthic macroinvertebrate fauna in paddy fields in the Meriç–Ergene River Basin (Turkish Thrace region) by investigating some physicochemical environmental parameters that may affect its distribution. For this purpose, water and sediment samples were collected from paddy fields in the study area during the cultivation season, including spring, summer and autumn of 2016, taking into account the water resources that supply the rice fields (artesian water, the Meriç River, the Ergene River and Meriç–Ergene mixed water). A total of 47 taxa (on average 8953 individuals per m2) were identified at the study sites. Water samples were analyzed to determine water temperature, pH, conductivity, salinity, total dissolved solids, calcium, magnesium, total hardness, nitrite nitrogen, nitrate nitrogen, phosphate, sulfate, dissolved oxygen and pesticides, and sediment samples were analyzed to determine the content of some heavy metals, including Cd, Ni, Cu, and Mn. The biological risk index (mERM-Q) and the potential ecological risk index (RI) were applied to the data and a hypothetical ecological risk analysis was conducted using our data and data available in the literature to assess the ecological risk profile of the ecosystem based on benthic macroinvertebrates. To this end, environmental factors were grouped based on the literature as heavy metals (S1), nutrients (S2), other physicochemical parameters (S3) and pesticides (S4), while organisms were grouped as Oligochaeta, Chironomidae, Insecta and others based on the dynamics of benthic macroinvertebrates to assess pressure factors. As a result, pesticides (S4) were found to exert the strongest ecological pressure on benthic macroinvertebrate fauna in paddy fields in the Meriç–Ergene River Basin.

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Meriç–Ergene河流域（土耳其色雷斯）稻田中底栖大型无脊椎动物的生态风险分析评估

摘要底栖大型无脊椎动物是水生环境的重要组成部分，监测其种群动态有助于我们了解环境因素对生态系统的影响。本研究旨在通过调查可能影响其分布的一些物理化学环境参数，确定Meriç–Ergene河流域（土耳其色雷斯地区）稻田中底栖大型无脊椎动物的动态。为此，在种植季节，包括2016年春季、夏季和秋季，从研究区域的稻田中采集了水和沉积物样本，同时考虑了稻田的水资源（自流水、梅里河、额尔根河和梅里-额尔根混合水）。在研究地点共鉴定了47个分类群（平均每平方米8953个个体）。分析水样以测定水温、pH、电导率、盐度、总溶解固体、钙、镁、总硬度、亚硝酸盐氮、硝酸盐氮、磷酸盐、硫酸盐、溶解氧和农药，分析沉积物样品以测定一些重金属的含量，包括Cd、Ni、Cu和Mn。将生物风险指数（mERM-Q）和潜在生态风险指数（RI）应用于数据，并使用我们的数据和文献中可用的数据进行假设的生态风险分析，以评估基于底栖大型无脊椎动物的生态系统的生态风险状况。为此，根据文献将环境因素分为重金属（S1）、营养物质（S2）、其他物理化学参数（S3）和杀虫剂（S4），而根据底栖大型无脊椎动物的动态将生物分为寡毛目、摇蚊科、昆虫纲和其他，以评估压力因素。因此，发现杀虫剂（S4）对Meriç–Ergene河流域稻田中的底栖大型无脊椎动物施加了最强的生态压力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Oceanological and Hydrobiological Studies 地学-海洋学

CiteScore

1.70

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Oceanological and Hydrobiological Studies is an international journal published by the Institute of Oceanography, University of Gdańsk in Poland. The journal has 4 issues per year and contains papers on all aspects of the marine environment and hydrobiology. All manuscripts are reviewed by editors and independent experts. Based on the referees'' recommendations, the Editor will make a decision on whether to accept a contribution. All articles are published in English. The journal is open to all matters concerning the water environment, thus providing the readers with a wide spectrum of topics in every issue.