Dinoflagellates encystment with emphasis on blooms in Boughrara Lagoon (South-Western Mediterranean): Combined effects of trace metal concentration and environmental context

首页> 外文期刊>Estuarine Coastal and Shelf Science >Dinoflagellates encystment with emphasis on blooms in Boughrara Lagoon (South-Western Mediterranean): Combined effects of trace metal concentration and environmental context

【24h】

Dinoflagellates encystment with emphasis on blooms in Boughrara Lagoon (South-Western Mediterranean): Combined effects of trace metal concentration and environmental context

机译：恐龙鞭毛虫的囊肿，着重于Boughrara泻湖（西南地中海）的水华：痕量金属浓度和环境环境的综合影响

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Resting cysts (RCs), vegetative cell abundance, sediment characteristics, nutrient and trace metal concentrations were investigated in fifteen stations at Boughrara Lagoon during October and November 2016. Twelve morphotypes of RC were recorded. The sampling sites showed a similar cyst assemblage trend but differed in total cyst abundance. The cysts of heterotrophic dinoflagellates dominated over the cysts of autotrophic dinoflagellates throughout the study area and were correlated to the abundance of Bacillariophyceae explained by a likely trophic relationship. The abundance of cysts was positively correlated to phosphorus concentrations measured in the sediment. As well, cysts of Polykrikos kofoidii and Scrippsiella trochoidea were significantly correlated to nitrogen concentrations in water column. The trace metal concentrations did not show any effect on cyst abundances in most cases, except for Cr on mixotrophic dinoflagellates, suggesting that metal contamination is not determinant in the encystment of dinoflagellates. Autotrophic dinoflagellates cyst abundance was dependent on sediment characteristics with the highest densities being recorded in muddy sediments. The hydrodynamics of the lagoon, characterized by a weak water circulation and a low water renewal in the South-Western zone, was considered among the environmental factors most affecting RC distribution. The dominance of potentially toxic species cysts highlights the necessity of monitoring these forms suspected to constitute the precursor of toxic blooms in this area.

机译：在2016年10月至2016年11月期间，在Boughrara泻湖的十五个站点调查了静止囊肿（RCs），营养细胞的丰度，沉积物特征，养分和微量金属浓度。记录了十二个RC形态。采样部位显示出相似的囊肿聚集趋势，但总囊肿丰度不同。在整个研究区域中，异养鞭毛藻的囊肿在自养鞭毛藻的囊肿中占主导地位，并与可能的营养关系解释为与芽孢杆菌的丰度相关。囊肿的丰度与沉积物中测得的磷浓度呈正相关。同样，波氏多立克氏菌和德氏链球菌的囊肿与水柱中的氮浓度显着相关。在大多数情况下，痕量金属浓度对囊肿丰度没有任何影响，除了Cr对混合营养性鞭毛鞭毛藻有影响外，这表明在鞭毛鞭毛鞭毛藻的包囊中金属污染不是决定因素。自养的鞭毛藻的囊肿丰度取决于沉积物的特性，在泥质沉积物中记录的密度最高。咸水湖的水动力特性以西南地区的弱水循环和低水更新为特征，被认为是最影响RC分布的环境因素之一。潜在毒性物种囊肿的优势凸显了监测这些被怀疑构成该地区毒性水华前兆的形式的必要性。

著录项

来源
《Estuarine Coastal and Shelf Science》 |2020年第may31期|106648.1-106648.13|共13页
作者

展开▼
作者单位

Inst Natl Sci & Technol Mer Salammbo 28 Rue 2 Mars 1934 Salammbo 2025 Tunisia|Univ Sfax Fac Sci Sfax Route Soukra Km 3-5 BP 802 Sfax 3000 Tunisia;

Natl Sch Engineers Sfax Lab Environm Engn & Eco Technol Route Soukra Km 4-5 BP W Sfax 3038 Tunisia;

Minist Equipernent Habitat & Amenagement Terr DHU Rue Hadi Chaker Sakiet Ezzit Sfax 3021 Tunisia;

Inst Natl Sci & Technol Mer Salammbo 28 Rue 2 Mars 1934 Salammbo 2025 Tunisia;

Inst Natl Sci & Technol Mer Salammbo 28 Rue 2 Mars 1934 Salammbo 2025 Tunisia|Aix Marseille Univ Univ Toulon Mediterranean Inst Oceanog CNRS IRD MIO UM 110 F-13288 Marseille France;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词
Trace metals; Sediment characteristics; Resting cysts; Vegetative cells; Hydrodynamics;

机译：痕量金属;泥沙特征;息肉囊肿营养细胞;流体力学;

相似文献

外文文献
中文文献
专利

1. Occurrence of epibenthic dinoflagellates in relation to biotic substrates and to environmental factors in Southern Mediterranean (Bizerte Bay and Lagoon, Tunisia): An emphasis on the harmful Ostreopsis spp., Prorocentrum lima and Coolia monotis [J] . Ben Gharbia Hela, Laabir Mohamed, Ben Mhamed Abdelouahed, Harmful Algae . 2019,第Deca期

机译：在地中海南部（突尼斯的比塞大湾和泻湖），与生物底物和环境因素有关的表皮鞭毛鞭毛虫的发生：侧重于有害的骨质疏生菌属，利马原球菌和库利阿单眼菌
2. Surface sediment enrichment with trace metals in a heavily human-impacted lagoon (Bizerte Lagoon, Southern Mediterranean Sea): Spatial distribution, ecological risk assessment, and implications for environmental protection [J] . El Zrelli Radhouan, Yacoubi Lamia, Wakkaf Takwa, Marine pollution bulletin . 2021,第Auga期

机译：表面沉积物富含痕量金属，在大量人体影响的泻湖（Bizerte Lagoon，Southern Mediterranean）：空间分布，生态风险评估和环境保护的影响
3. Using a naive Bayes classifier to explore the factors driving the harmful dinoflagellate Karenia selliformis blooms in a southeastern Mediterranean lagoon [J] . Wafa Feki-Sahnoun, Hasna Njah, Asma Hamza, Ocean Dynamics . 2020,第7期

机译：使用天真的贝叶斯分类器探索驾驶有害Dinoflagellate Karenia Selliformis在东南地中海泻湖的因素
4. Aerosol Trace Metal Concentrations over the Mediterranean Basin: observations through six cruise campaigns on board the CNR Research Vessel URANIA [C] . M. Bencardino, N.Pirrone, F. Sprovieri International Conference on Heavy Metals in the Environment . 2014

机译：气溶胶痕量金属浓度在地中海盆地上：通过六个巡航活动的六个巡航活动，CNR研究船乌兰尼亚
5. Concentrations and Sources of Trace Metals in Water and Sediments of the South Fork New River, Ashe County, North Carolina, and Their Potential Effects on Aquatic Biota [D] . ?Watkins, Xaviera 2020

机译：南叉新河，阿什县，北卡罗来纳州的水和沉积物中痕量金属的浓度和来源及其对水生生物群的潜在影响
6. Concentration and Human Health Implications of Trace Metals in Fish of Economic Importance in Lagos Lagoon Nigeria [O] . Ngozi M. Oguguah, M. Onyekachi, J. Ikegwu 2017

机译：尼日利亚拉各斯泻湖中经济上重要的鱼类中微量金属的浓度及其对人类健康的影响
7. : "This paper deals with the functionality of the flaked stone assemblages from several Neolithic sites of the NE of the Iberian Peninsula. The chronological framework ranges from the mid-6th to the mid-4th millennium cal. BCE, which corresponds to the Early and Middle Neolithic. This long period ranges from the arrival of the first farming communities in the Iberian Peninsula, around 5600-5500 cal. BCE, to 3600-3500 cal. BCE, two millennia later, when Neolithic communities had stably occupied most of the available territory, from the mountainous areas of the Pyrenees to the coastal areas of the Mediterranean.In this context, the NE of the Iberian Peninsula is one of the areas where a major number of use-wear analyses have been carried out, especially for what concerns the Neolithic period. This is mainly due to the interest shown by the directors of the excavations and by the Spanish use-wear specialists as well; both participated and cooperated in order to enlarge the number of contexts studied, making the NE of the Iberian Peninsula one of the areas of Europe with the largest number of ‘functional studies’. As a result, today we have a reliable picture of the type of lithic tools used by the first farming groups, how they were used, and which needs they were satisfying.The methodology employed for this type of analysis is today broadly shared by most use-wear specialists. A stereoscopic microscope is used together with a reflected-light microscope for the analysis of the archaeological specimens. Afterwards, the observed use-wear traces are compared with the traces from experimental tools. This study primarily made use of the tools preserved at the ‘Traceoteque’ of the Institución Milà y Fontanals of the CSIC of Barcelona.This paper presents the results obtained for the different types of analysed sites and the relative lithic assemblages. In this way, tools from different contexts are compared: open-air sites, caves and rock-shelters, pit-sites, burials, and mining sites. Such a diversity of contexts allowed for the exploration of the existence of recurrences and differences in the functionality of the lithic tools from one site to another. The results obtained have also provided information on some aspects related to the economic processes carried out at the different sites, caves, rock-shelters and open-air contexts. It has been possible to gain fresh data on the types of tasks carried out and their relative importance for each site, their relation with the geographical and environmental context and the natural resources available there. In addition, analysing tools recovered from burials – mainly individual inhumations – provided information on the relationships between the buried individuals and the working tools, in particular exploring the relationships between sex and age patterns and the types of tools deposited as goods.In conclusion, use-wear analysis allowed for the exploration of a variety of issues; from technical aspects related to the production and management of the lithic resources to social aspects related to the subsistence activities and the individuals that carried them out." [O] . Gibaja Bao, Juan Francisco, Mazzucco, Niccolo 2015

机译：：“本文研究了伊比利亚半岛东北部几个新石器时代遗址的片状石材组合的功能。时间框架从公元前6世纪中叶到4世纪中叶，分别对应于早期和早期。新石器时代中期，这段时间的长短是从伊比利亚半岛的第一个农业社区到来，大约在公元前5600-5500 cal，到了两千年后的3600-3500 BCE，当时新石器时代的社区稳定地占据了大部分可用土地。从比利牛斯山脉山区到地中海沿岸地区。在这种情况下，伊比利亚半岛东北部是进行过大量使用磨损分析的地区之一，尤其是在关注方面新石器时代，这主要是由于发掘负责人和西班牙使用服装专家表现出的浓厚兴趣；他们参与和合作以扩大孔蒂的数量xts进行了研究，使伊比利亚半岛的NE成为“功能研究”数量最多的欧洲地区之一。结果，今天我们可以可靠地了解第一批耕作小组使用的石器工具的类型，使用方法以及它们满足的需求。今天，大多数使用方法广泛共享用于这种类型的分析的方法穿专家。立体显微镜与反射光显微镜一起用于分析考古样本。然后，将观察到的使用磨损痕迹与实验工具的痕迹进行比较。这项研究主要利用了巴塞罗那CSIC的米拉·丰塔纳尔研究所的“ Traceoteque”中保存的工具。本文介绍了针对不同类型的分析地点和相对石器组合所获得的结果。通过这种方式，可以比较来自不同环境的工具：露天场所，洞穴和岩石避难所，露天场所，埋葬场所和采矿场所。如此多样的上下文允许探索重复性的存在以及从一个站点到另一个站点的石器工具的功能差异。所获得的结果还提供了与在不同地点，洞穴，避难所和露天环境中进行的经济过程有关的某些方面的信息。可以获得有关所执行任务的类型及其对每个站点的相对重要性，它们与地理和环境环境以及那里可用自然资源的关系的新数据。此外，对从墓葬中回收的工具（主要是个人遗体）进行分析，可提供有关被掩埋的个体与工作工具之间关系的信息，尤其是探索性别与年龄模式之间的关系以及作为商品存放的工具的类型。磨损分析允许探索各种问题；从与石器资源的生产和管理有关的技术方面到与自给活动及其实施者有关的社会方面。”

Dinoflagellates encystment with emphasis on blooms in Boughrara Lagoon (South-Western Mediterranean): Combined effects of trace metal concentration and environmental context

摘要

著录项

相似文献

相关主题

期刊订阅