A. H. Aberrhaman, L. A. Lrhorfi, B. Bouhaddioui, R. Bengueddour
{"title":"摩洛哥拉巴特-塞尼特拉地区梅迪亚和穆莱-布塞勒姆两个海洋地点某些理化参数对有毒浮游类群分布影响的研究","authors":"A. H. Aberrhaman, L. A. Lrhorfi, B. Bouhaddioui, R. Bengueddour","doi":"10.4236/ojms.2020.101003","DOIUrl":null,"url":null,"abstract":"The diversity of phytoplankton communities in marine \nwaters depends on the environmental, physical, chemical and biological factors \nin which they occur. The aim of our work is to determine the effect of certain \nphysicochemical parameters on the proliferation of five planktonic taxa (1: \nAlexandrium 2: Dinophysis 3: Gymnodinum; 4: Pseudonitzschia; 5: Proocentrum) \nidentified on the sites of Mehdia and Moulay Bousselham, Gharb of \nMoroccobetween 2017 and 2018. The results confirm the presence of these toxic \ntaxa in both sites but with different densities. The ACP has allowed separating \ntwo distinct groups with coefficients of determination of more than 70%. \nIndeed, the first group concerning the site of Mehdia, it is characterized by \nan abundance of the taxa of Gymnodium and Pseudoni, which prefers salt water and oxygenated, thus important phosphate \nand nitrate levels. Moreover, unlike the temperature factor. However, the \nsecond group concerning the Moulay Bousselham site is located on the positive \nside of the axis, essentially characterized by moderately high temperatures. \nThese conditions are favorable for the Dinophysis, Alexandrum and Proocentrum \ntaxa. This trend makes it possible to classify the Moulay Bousselham site as a \nrisk zone. In light of these results, the authorities of all stakeholders in \nthe sector must increase efforts to overcome this constraint.","PeriodicalId":65849,"journal":{"name":"海洋科学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of the Effect of Certain Physicochemical Parameters on the Distribution of Toxic Planktonic Taxa in Two Oceanic Sites Mehdia and Moulay Bousselham, Rabat Sale Kenitra Region, Morocco\",\"authors\":\"A. H. Aberrhaman, L. A. Lrhorfi, B. Bouhaddioui, R. Bengueddour\",\"doi\":\"10.4236/ojms.2020.101003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The diversity of phytoplankton communities in marine \\nwaters depends on the environmental, physical, chemical and biological factors \\nin which they occur. The aim of our work is to determine the effect of certain \\nphysicochemical parameters on the proliferation of five planktonic taxa (1: \\nAlexandrium 2: Dinophysis 3: Gymnodinum; 4: Pseudonitzschia; 5: Proocentrum) \\nidentified on the sites of Mehdia and Moulay Bousselham, Gharb of \\nMoroccobetween 2017 and 2018. The results confirm the presence of these toxic \\ntaxa in both sites but with different densities. The ACP has allowed separating \\ntwo distinct groups with coefficients of determination of more than 70%. \\nIndeed, the first group concerning the site of Mehdia, it is characterized by \\nan abundance of the taxa of Gymnodium and Pseudoni, which prefers salt water and oxygenated, thus important phosphate \\nand nitrate levels. Moreover, unlike the temperature factor. However, the \\nsecond group concerning the Moulay Bousselham site is located on the positive \\nside of the axis, essentially characterized by moderately high temperatures. \\nThese conditions are favorable for the Dinophysis, Alexandrum and Proocentrum \\ntaxa. This trend makes it possible to classify the Moulay Bousselham site as a \\nrisk zone. In light of these results, the authorities of all stakeholders in \\nthe sector must increase efforts to overcome this constraint.\",\"PeriodicalId\":65849,\"journal\":{\"name\":\"海洋科学期刊(英文)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-01-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"海洋科学期刊(英文)\",\"FirstCategoryId\":\"1089\",\"ListUrlMain\":\"https://doi.org/10.4236/ojms.2020.101003\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"海洋科学期刊(英文)","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.4236/ojms.2020.101003","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Study of the Effect of Certain Physicochemical Parameters on the Distribution of Toxic Planktonic Taxa in Two Oceanic Sites Mehdia and Moulay Bousselham, Rabat Sale Kenitra Region, Morocco
The diversity of phytoplankton communities in marine
waters depends on the environmental, physical, chemical and biological factors
in which they occur. The aim of our work is to determine the effect of certain
physicochemical parameters on the proliferation of five planktonic taxa (1:
Alexandrium 2: Dinophysis 3: Gymnodinum; 4: Pseudonitzschia; 5: Proocentrum)
identified on the sites of Mehdia and Moulay Bousselham, Gharb of
Moroccobetween 2017 and 2018. The results confirm the presence of these toxic
taxa in both sites but with different densities. The ACP has allowed separating
two distinct groups with coefficients of determination of more than 70%.
Indeed, the first group concerning the site of Mehdia, it is characterized by
an abundance of the taxa of Gymnodium and Pseudoni, which prefers salt water and oxygenated, thus important phosphate
and nitrate levels. Moreover, unlike the temperature factor. However, the
second group concerning the Moulay Bousselham site is located on the positive
side of the axis, essentially characterized by moderately high temperatures.
These conditions are favorable for the Dinophysis, Alexandrum and Proocentrum
taxa. This trend makes it possible to classify the Moulay Bousselham site as a
risk zone. In light of these results, the authorities of all stakeholders in
the sector must increase efforts to overcome this constraint.