Sara El Yaagoubi, A. O. Edegbene, Mohamed El Haissoufi, Rihab Harrak, M. El Alami
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Following the delineation of sites along the gradient of impacts in the study area, we categorized 7 sites as slightly impacted sites (SISs), 19 sites as moderately impacted sites (MISs), and 10 sites as heavily impacted sites (HISs). We successfully identified and categorized the traits as either vulnerable or tolerant based on RLQ models. Traits such as reproductive cycles per year and tegument respiration, which were positively correlated with SISs in the RLQ model and also positively correlated with depth and chlorine, were identified as vulnerable traits. Crawling locomotion and full water swimming were identified as tolerant traits. The distribution patterns of the OCH taxa revealed a robust correlation between the taxa and the sampling sites. Notably, taxa such as Nepidae, Naucoridae, and Corixidae exhibited widespread distribution and a strong association with the SISs. On the other hand, traits related to living macroinvertebrate food sources and reproduction in vegetation, specifically clutches, exhibited a negative correlation with total dissolved solids. Incorporating OCH functional traits into biomonitoring programs allows for a more comprehensive assessment of river ecosystems. This approach provides a nuanced understanding of how different stressors impact the community composition and overall ecological health.","PeriodicalId":502647,"journal":{"name":"Ecologies","volume":"28 6","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Odonata, Coleoptera, and Heteroptera (OCH) Trait-Based Biomonitoring of Rivers within the Northwestern Rif of Morocco: Exploring the Responses of Traits to Prevailing Environmental Gradients\",\"authors\":\"Sara El Yaagoubi, A. O. 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Following the delineation of sites along the gradient of impacts in the study area, we categorized 7 sites as slightly impacted sites (SISs), 19 sites as moderately impacted sites (MISs), and 10 sites as heavily impacted sites (HISs). We successfully identified and categorized the traits as either vulnerable or tolerant based on RLQ models. Traits such as reproductive cycles per year and tegument respiration, which were positively correlated with SISs in the RLQ model and also positively correlated with depth and chlorine, were identified as vulnerable traits. Crawling locomotion and full water swimming were identified as tolerant traits. The distribution patterns of the OCH taxa revealed a robust correlation between the taxa and the sampling sites. Notably, taxa such as Nepidae, Naucoridae, and Corixidae exhibited widespread distribution and a strong association with the SISs. 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引用次数: 1
摘要
本研究旨在确定各种压力对摩洛哥西北部里夫地区溪流中 OCH(鸟纲、鞘翅目和异翅目)功能组成的影响。我们在摩洛哥西北部里夫地区选定的溪流地点研究了 OCH 的特征如何应对人类引起的压力。在2021年至2023年的两年时间里,我们使用尺寸为20×20厘米、网眼大小为500微米的Surber采样器从36个地点采集了OCH标本。我们测量了温度、pH 值、溶解氧和 NO-3 等物理化学和水力参数。我们将 11 个性状类别中的 67 个性状属性分配给所收集到的 OCH 科级分类群。根据研究区域的影响梯度划分地点,我们将 7 个地点归类为轻度影响地点(SISs),19 个地点归类为中度影响地点(MISs),10 个地点归类为重度影响地点(HISs)。根据 RLQ 模型,我们成功地识别并将性状分为易受影响性状和耐受性状。在 RLQ 模型中,每年繁殖周期和表皮呼吸等性状与 SISs 呈正相关,同时也与深度和氯呈正相关,因此被确定为脆弱性状。爬行运动和全水域游泳被确定为耐受性特征。海洋水生生物分类群的分布模式表明,分类群与采样地点之间存在密切的相关性。值得注意的是,尼泊科、瑙科和蚬科等类群分布广泛,且与水深测量系统密切相关。另一方面,与大型无脊椎动物活体食物来源和在植被中繁殖有关的性状(特别是成群繁殖)与总溶解固体呈负相关。将 OCH 功能特征纳入生物监测计划可对河流生态系统进行更全面的评估。通过这种方法,可以细致入微地了解不同的压力因素如何影响群落组成和整体生态健康。
Odonata, Coleoptera, and Heteroptera (OCH) Trait-Based Biomonitoring of Rivers within the Northwestern Rif of Morocco: Exploring the Responses of Traits to Prevailing Environmental Gradients
This study aimed to determine the impact of various pressures on the functional composition of OCH (Odonata, Coleoptera, and Heteroptera) in streams within the northwest Rif region of Morocco. We examined how OCH traits respond to human-induced pressures in selected stream sites in Morocco’s northwestern Rif region. OCH specimens were collected from 36 sites using a Surber sampler with dimension of 20 × 20 cm and mesh size of 500 µm over the course of two years, from 2021 to 2023. We measured physico-chemical and hydraulic parameters such as temperature, pH, DO, and NO-3. Sixty-seven trait attributes from 11 trait classes were assigned to the collected OCH taxa at the family level. Following the delineation of sites along the gradient of impacts in the study area, we categorized 7 sites as slightly impacted sites (SISs), 19 sites as moderately impacted sites (MISs), and 10 sites as heavily impacted sites (HISs). We successfully identified and categorized the traits as either vulnerable or tolerant based on RLQ models. Traits such as reproductive cycles per year and tegument respiration, which were positively correlated with SISs in the RLQ model and also positively correlated with depth and chlorine, were identified as vulnerable traits. Crawling locomotion and full water swimming were identified as tolerant traits. The distribution patterns of the OCH taxa revealed a robust correlation between the taxa and the sampling sites. Notably, taxa such as Nepidae, Naucoridae, and Corixidae exhibited widespread distribution and a strong association with the SISs. On the other hand, traits related to living macroinvertebrate food sources and reproduction in vegetation, specifically clutches, exhibited a negative correlation with total dissolved solids. Incorporating OCH functional traits into biomonitoring programs allows for a more comprehensive assessment of river ecosystems. This approach provides a nuanced understanding of how different stressors impact the community composition and overall ecological health.