David Fernández-Moreno, Cristina Delgado, Lorena González-Paz, Saúl Blanco, Pedro M. Sánchez-Castillo, Carmen Pérez-Martínez
{"title":"探索西班牙南部湿地电导率梯度上的硅藻物种组成","authors":"David Fernández-Moreno, Cristina Delgado, Lorena González-Paz, Saúl Blanco, Pedro M. Sánchez-Castillo, Carmen Pérez-Martínez","doi":"10.1007/s10750-024-05566-7","DOIUrl":null,"url":null,"abstract":"<p>The objective of this study was to explore the environmental factors having the greatest influence on the distribution and abundance of epipelic diatom species in different wetlands in southern Spain. We previously defined four groups of conductivity categories: fresh (< 0.8 mS cm<sup>−1</sup>), oligosaline (< 8 mS cm<sup>−1</sup>), mesosaline (8–30 mS cm<sup>−1</sup>) and eusaline (> 30 mS cm<sup>−1</sup>). A dbRDA analysis performed on a subset of 36 of the 53 wetlands, using a total of 25 environmental variables, showed that five environmental variables (conductivity, pH, wetland area, silicates, and total suspended solids) were the best explanatory variables for the diatom assemblage, with conductivity being the main explanatory variable. Nonmetric multidimensional scaling (nMDS) analysis performed on the set of 53 wetlands revealed significant differences in diatom composition among the four conductivity groups. The key species in the eusaline group were <i>Tryblionella pararostrata</i>, <i>Halamphora</i> sp.1 and <i>Cocconeis euglypta</i>, whereas in the mesosaline and oligosaline group, these were <i>Navicula veneta</i>, <i>Tryblionella hungarica</i> and <i>Nitzschia inconspicua</i>. Finally, in the fresh group dominated <i>Achnanthidium minutissimum</i>, <i>Navicula veneta</i> and <i>Gomphonema exilissimum</i>. This study on epipelic diatoms can therefore contribute to the knowledge of these organisms in a European region with a high diversity of wetland typologies.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"29 1","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Exploring epipelic diatom species composition across wetlands conductivity gradients in southern Spain\",\"authors\":\"David Fernández-Moreno, Cristina Delgado, Lorena González-Paz, Saúl Blanco, Pedro M. Sánchez-Castillo, Carmen Pérez-Martínez\",\"doi\":\"10.1007/s10750-024-05566-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The objective of this study was to explore the environmental factors having the greatest influence on the distribution and abundance of epipelic diatom species in different wetlands in southern Spain. We previously defined four groups of conductivity categories: fresh (< 0.8 mS cm<sup>−1</sup>), oligosaline (< 8 mS cm<sup>−1</sup>), mesosaline (8–30 mS cm<sup>−1</sup>) and eusaline (> 30 mS cm<sup>−1</sup>). A dbRDA analysis performed on a subset of 36 of the 53 wetlands, using a total of 25 environmental variables, showed that five environmental variables (conductivity, pH, wetland area, silicates, and total suspended solids) were the best explanatory variables for the diatom assemblage, with conductivity being the main explanatory variable. Nonmetric multidimensional scaling (nMDS) analysis performed on the set of 53 wetlands revealed significant differences in diatom composition among the four conductivity groups. The key species in the eusaline group were <i>Tryblionella pararostrata</i>, <i>Halamphora</i> sp.1 and <i>Cocconeis euglypta</i>, whereas in the mesosaline and oligosaline group, these were <i>Navicula veneta</i>, <i>Tryblionella hungarica</i> and <i>Nitzschia inconspicua</i>. Finally, in the fresh group dominated <i>Achnanthidium minutissimum</i>, <i>Navicula veneta</i> and <i>Gomphonema exilissimum</i>. This study on epipelic diatoms can therefore contribute to the knowledge of these organisms in a European region with a high diversity of wetland typologies.</p>\",\"PeriodicalId\":13147,\"journal\":{\"name\":\"Hydrobiologia\",\"volume\":\"29 1\",\"pages\":\"\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Hydrobiologia\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1007/s10750-024-05566-7\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MARINE & FRESHWATER BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Hydrobiologia","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s10750-024-05566-7","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
本研究的目的是探索对西班牙南部不同湿地中附生硅藻物种的分布和数量影响最大的环境因素。我们之前定义了四组电导率类别:新鲜(0.8 mS cm-1)、低盐度(8 mS cm-1)、中盐度(8-30 mS cm-1)和高盐度(30 mS cm-1)。利用总共 25 个环境变量对 53 个湿地中的 36 个子集进行的 dbRDA 分析表明,五个环境变量(电导率、pH 值、湿地面积、硅酸盐和总悬浮固体)是硅藻群的最佳解释变量,其中电导率是主要的解释变量。对 53 块湿地进行的非度量多维标度(nMDS)分析表明,硅藻组成在四个电导率组之间存在显著差异。幼盐组的主要物种是 Tryblionella pararostrata、Halamphora sp.1 和 Cocconeis euglypta,而中盐组和寡盐组的主要物种是 Navicula veneta、Tryblionella hungarica 和 Nitzschia inconspicua。最后,在新鲜组中,主要是 Achnanthidium minutissimum、Navicula veneta 和 Gomphonema exilissimum。因此,这项关于附生硅藻的研究有助于了解欧洲地区湿地类型的多样性。
Exploring epipelic diatom species composition across wetlands conductivity gradients in southern Spain
The objective of this study was to explore the environmental factors having the greatest influence on the distribution and abundance of epipelic diatom species in different wetlands in southern Spain. We previously defined four groups of conductivity categories: fresh (< 0.8 mS cm−1), oligosaline (< 8 mS cm−1), mesosaline (8–30 mS cm−1) and eusaline (> 30 mS cm−1). A dbRDA analysis performed on a subset of 36 of the 53 wetlands, using a total of 25 environmental variables, showed that five environmental variables (conductivity, pH, wetland area, silicates, and total suspended solids) were the best explanatory variables for the diatom assemblage, with conductivity being the main explanatory variable. Nonmetric multidimensional scaling (nMDS) analysis performed on the set of 53 wetlands revealed significant differences in diatom composition among the four conductivity groups. The key species in the eusaline group were Tryblionella pararostrata, Halamphora sp.1 and Cocconeis euglypta, whereas in the mesosaline and oligosaline group, these were Navicula veneta, Tryblionella hungarica and Nitzschia inconspicua. Finally, in the fresh group dominated Achnanthidium minutissimum, Navicula veneta and Gomphonema exilissimum. This study on epipelic diatoms can therefore contribute to the knowledge of these organisms in a European region with a high diversity of wetland typologies.
期刊介绍:
Hydrobiologia publishes original research, reviews and opinions regarding the biology of all aquatic environments, including the impact of human activities. We welcome molecular-, organism-, community- and ecosystem-level studies in contributions dealing with limnology and oceanography, including systematics and aquatic ecology. Hypothesis-driven experimental research is preferred, but also theoretical papers or articles with large descriptive content will be considered, provided they are made relevant to a broad hydrobiological audience. Applied aspects will be considered if firmly embedded in an ecological context.