检索结果-南通市图书馆

Metals and metalloid bioconcentrations in the tissues of Typha latifolia grown in the four interconnected ponds of a domestic landfill site

引用

Journal of Environmental Sciences 2017年第4期29卷 56-68页

作者： Zohra Ben Salem Xavier Laffray Ahmed Al-Ashoor habib ayadi Lotfi Aleya Bourgogne Franche-Comte University Chrono-Environnement Laboratory UMR CNRS 6249 F-25030 Besancon Cedex France Paris Est-Creteil University IPE team iEES Paris UMR 7618 F-94010 Creteil Cedex Prance Thi Qar University IQ-64001 AI Nasiriyah Iraq Sfax University LR/UR/05ES05 Biodiversity and Aquatic Ecosystem BP 1171 CP 3000 Sfax Tunisia

The uptake of metals in roots and their transfer to rhizomes and above-ground plant parts（stems, leaves） of cattails（Typha latifolia L.） were studied in leachates from a domestic landfill site（Etueffont, France） and treated in a natural lagooning system. Plant parts and corresponding water and sediment samples were taken at the inflow and outflow points of the four ponds at the beginning and at the end of the growing season. Concentrations of As, Cd, Cr, Cu, Fe, Mn, Ni and Zn in the different compartments were estimated and their removal efficiency assessed, reaching more than 90% for Fe, Mn and Ni in spring and fall as well in the water compartment. The above-and below-ground cattail biomass varied from 0.21 to 0.85, and 0.34 to 1.24 kg dry weight/m^2, respectively, the highest values being recorded in the fourth pond in spring 2011. The root system was the first site of accumulation before the rhizome, stem and leaves. The highest metal concentration was observed in roots from cattails growing at the inflow of the system＇s first pond. The trend in the average trace element concentrations in the cattail plant organs can generally be expressed as： Fe 〉 Mn 〉 As 〉 Zn 〉 Cr 〉 Cu 〉 Ni 〉 Cd for both spring and fall. While T. latifolia removes trace elements efficiently from landfill leachates, attention should also be paid to the negative effects of these elements on plant growth.

关键词： Landfill leachate Lagooning Trace elements Typha latifolia Phytoremediation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Heavy metal concentrations inLiza aurata(Risso,1810)captured from the Kerkennah Islands(Gulf of Gabes)and associated health risks

引用

Journal of Coastal Life Medicine 2016年第7期4卷 527-530页

作者： Zohra Ben Salem ayadi habib Biodiversity and Aquatic Ecosystems UR/11ES72 Research Unit Department of Life Sciences ResearchSfax Faculty of SciencesUniversity of SfaxStreet of Soukra Km 3.5 BP 1171-PO Box 3000 SfaxTunisia University of Franche-Comte Chrono-Environnement LaboratoryUMR CNRS 62491Place LeclercF-25030 BesançonFrance

Objective:To determine the concentration of heavy metals(Cd,Cu,Fe,Ni,Pb and Zn)in the liver,gills and muscle of Liza aurata(***)collected from the Kerkennah *** target hazard quotient was also used as an indicator of human health risks associated with fish ***:The sample was collected from Kerkennah Islands(Gulf of Gabes,Tunisia).Heavy metals in *** tissues(gills,liver and muscle)were analysed with an atomic absorption spectrometer(PerkinElmer).Results:As expected,muscle always possessed the lowest concentrations of all *** maximum concentrations of Cd(0.52 mg/kg wet weight),Cu(5.43 mg/kg wet weight),Fe(115.27mg/kg wet weight)and Zn(112.20 mg/kg wet weight)were measured in the liver,while the highest Ni(1.54 mg/kg wet weight)and Pb(1.43 mg/kg wet weight)were recorded in *** target hazard quotient through consumption of fish and calculated by adding the inividual target hazard quotient was below 1,indicating that there was no significant potential health risk associated with consumption of ***:*** from the Kerkennah Islands may be suitable for human consumption.

关键词： Bioaccumulation Health risks Heavy metals Kerkennah Islands Liza aurata

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Spring phytoplankton variability along a south coast of Sfax at the water-sediment interface(Tunisia,Eastern Mediterranean Sea)

引用

Journal of Coastal Life Medicine 2016年第2期4卷 121-127页

作者： Amira Rekik Zohra Ben Salem habib ayadi Jannet Elloumi Biodiversity and Aquatic Ecosystem Research Unity UR/11ES72Department of Sciences of LifeFaculty of Sciences of SfaxUniversity of SfaxStreet Soukra Km 3.5-BP 1171-CP 3000 SfaxTunisia

Objective:To compare the composition of the phytoplankton classes during the two spring studies,to study whether the spatial distribution of the phytoplankton is stable or not between spring 2010 and spring 2011 and to estimate the abiotic factor that mostly affects the structure and the richness of ***:Phytoplankton sub-samples were counted under an inverted microscope using the Utermöhl *** identification was made from morphological criteria after consulting various ***:Results showed a significant difference from spring 2010 to spring 2011 regarding nitrate/phosphate ratio,with high value in spring 2010(30.19±25.70).Relatively low nitrate/phosphate ratio(1.13±0.53)during spring 2011 might result from *** was characterised by the proliferation of Bacillariophyceae(46%–78%of the total microphytoplankton)and by the large number of *** two Bacillariophyceae species were identified at every station,represented essentially by Amphora sp.,Navicula sp.,Coscinodiscus *** Grammatophora *** results advise that Bacillariophyceae are usually adapted to particular ecological ***:This study shows that hydrological conditions in the south coast of Sfax present a high spatial and seasonal *** phytoplankton community distribution showed clear variations along the coastal stations during a spring cruises conducted in May 2010 and May *** phytoplankton community found along the coast was dominated by opportunistic Bacillariophyceae species.

关键词： South coast Sfax Phytoplankton Spring Southeastern Mediterranean sea

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Spatial and Vertical Distribution of Phytoplankton During a Winter Cruise in the South of the Kerkennah Islands in the Gulf of Gabes, Tunisia

引用

Journal of Life Sciences 2010年第7期4卷 22-29页

作者： Geurmazi Wassim Drira Zaher Elloumi Jannet Bourn Abderrahmen ayadi habib Biodiversity and Aquatic Ecosystems Research Unit UR/O5ES05 Faculty of Sciences of Sfax University of Sfax Street Soukra Km3.5 BP 1171 CP 3000 Sfax Tunisia

Spatial and vertical distribution of phytoplankton community were examined in the coast of the south of the Kerkennah Islands at three different depths 0, 2 and 6 m during the winter 2009 at 6 sampling stations. A total of 49 taxa belonging to five phytoplankton groups were identified （H＇=1.7 to 3.5 bits＇cell^-1）. Dinoflagellates and Diatoms were the most abundant phytoplankton groups which reached 27 and 71% of total abundance, respectively. The spatial distribution of the phytoplankton abundance showed a significant variation between the stations （P 〈 0.001）. While the vertical distribution of total phytoplankton showed a clear pattem, ANOVA test showed only an insignificant variation between the different depths at each station （P 〉 0.01）. On the whole, the maximum abundance of phytoplankton was recorded at the depths of 2 and 6 m （6 ×10^3 ind..Ll）. This might be due to the decrease of the nutrient concentrations in deeper water specially those of phosphate.

关键词： Kerkennah Islands phytoplankton spatial and vertical distribution environmental factors.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：