Facultad de Ingeniería y Administración, Universidad Nacional de Colombia, Sede Palmira, Colombia.
Grupo de Investigación en Ecología y Contaminación Acuática, Facultad de Ciencias Agropecuarias, Universidad Nacional de Colombia, Sede Palmira, Colombia.
Integr Environ Assess Manag. 2022 May;18(3):796-812. doi: 10.1002/ieam.4521. Epub 2021 Oct 13.
The anthropogenic discharges of inorganic nutrients impact water quality, affecting the macroinvertebrate assemblage and food safety. The main objective of this study was to examine the seawater quality and macroinvertebrate dynamics in muddy habitats of Buenaventura Bay, Colombian Pacific. Macroinvertebrates were captured using artisanal trawl nets during different seasons and along four sampling sites. Multivariate analyses (canonical correspondence analysis and generalized additive model) were used to assess the effects of variations in nitrite, nitrates, phosphate concentrations, and physicochemical variables (salinity, pH, dissolved oxygen [DO], temperature, and total dissolved solids [TDS]) of water on the macroinvertebrate assemblage. Richness was the highest at sites with high salinity and temperature and low concentrations of nitrites and TDS. The densities of the commercial shrimp species Xiphopenaeus riveti and Rimapenaeus byrdi were the highest at sites with higher DO and alkalinity, and lower nitrate concentrations. The swimming crab Callinectes arcuatus was dominant at sites with low water quality. In summary, in the transitional season and at the inner sites of Buenaventura Bay, it was observed the lowest water quality due to high nitrate concentration. High nitrate concentration was highlighted as the main anthropogenic factor that could decrease the capture of target macroinvertebrate species for food and livelihoods of artisanal fishermen and their families. Thus, macroinvertebrate communities may be vulnerable to increased inorganic nutrient inputs, which could affect estuarine water quality and ecosystems services. Integr Environ Assess Manag 2022;18:796-812. © 2021 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
人为排放的无机营养物质会影响水质，进而影响大型无脊椎动物群落和食品安全。本研究的主要目的是研究哥伦比亚太平洋布埃纳文图拉湾泥泞生境中的海水水质和大型无脊椎动物动态。在不同季节和四个采样点，使用手工拖网捕获大型无脊椎动物。使用典范对应分析和广义加性模型进行多元分析，以评估亚硝酸盐、硝酸盐、磷酸盐浓度以及水的理化变量（盐度、pH 值、溶解氧 [DO]、温度和总溶解固体 [TDS]）变化对大型无脊椎动物群落的影响。在高盐度和温度以及低亚硝酸盐和 TDS 浓度的地点，丰富度最高。商业虾类 Xiphopenaeus riveti 和 Rimapenaeus byrdi 的密度在 DO 和碱度较高、硝酸盐浓度较低的地点最高。游泳蟹 Callinectes arcuatus 在水质较差的地点占主导地位。总之，在过渡季节和布埃纳文图拉湾的内部地点，由于硝酸盐浓度较高，观察到水质最低。高硝酸盐浓度被强调为主要的人为因素，它可能会减少目标大型无脊椎动物物种的捕捞，从而影响到手工渔民及其家庭的食物和生计。因此，大型无脊椎动物群落可能容易受到无机养分输入增加的影响，这可能会影响河口水质和生态系统服务。《综合环境评估与管理》2022 年；18：796-812。©2021 作者。综合环境评估与管理由 Wiley 期刊 LLC 代表环境毒理与化学学会（SETAC）出版。
