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Study on the Meiofauna Community Structure in Sajafi Shores as the bio-indicator of Environmental Pollution

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Open Journal of Ecology 2016年第10期6卷 632-644页

作者： Tahmineh Taheri Dezfouli Seyed Mohammad Bagher Nabavi Ebrahim Rajabzadeh Ghatromi Nooshin Sajjadi Islamic Azad University North Tehran branch Tehran Iran Faculty of Marine Sciences Khorramshahr University of Marine Science and Technology Iran Department of Natural Resources Khorramshahr University of Marine Science and Technology Iran School of Marine Science and Technology Islamic Azad University North Tehran Branch Tehran Iran

In order to investigate the health of the coastal environments, we collected Meiofauna assemblages along intertidal muddy shores of Sajafi in the northwest of Persian Gulf in two seasons (February 2013 and July 2014) from three horizontal transects. Meiofauna are the metazoan components of the benthos, defined by their body size (biota. They are so sensitive against adverse environmental changes and represent the ecological conditions. Environmental factors (temperature, salinity, DO, and pH), diversity and distribution of Meiofauna and their relationship with each other and with the grain size and TOM in both cold and warm seasons were evaluated. In this study, 56 meiofaunal species were identified in which foraminifera were abundant. The result of Shannon-Wiener in summer 2014 showed the highest value (H' = 3.148) while the lowest value occurred in winter 2014 (H' = 1.5). At the same time, the highest and lowest values of Simpson index (λ) were 0.43 and 0.05 respectively. Sajafi area, according to the Welch model, has a moderate (H' = 1 - 3) to unpolluted (H' > 3) condition compared to neighboring regions.

关键词： Meiofauna Benthic Sajafi Area bio-indicator Persian Gulf

Three tropical seagrasses as potential bio-indicators to trace metals in Xincun Bay,Hainan Island,South China

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Chinese Journal of Oceanology and Limnology 2012年第2期30卷 212-224页

作者：李磊黄小平 State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of Sciences Graduate University of Chinese Academy of Sciences Beijing 100049China Tropical Marine biological Research Station in Hainan Chinese Academy of Sciences

Concentrations of the trace metals Cu, Cd, Pb, and Zn were measured in seawater, rhizosphere sediments, interstitial water, and the tissues of three tropical species of seagrasses （Thalassia hemprichii, Enhalus acoroides and Cymodocea rotundata） from Xincun Bay of Hainan Island, South China. We analyzed different environmental compartments and the highest concentrations of Pb and Zn were found in the interstitial and seawater. The concentrations of Cd and Zn were significantly higher in blades compared with roots or rhizomes in 7＂. hemprichii and E. acoroides, respectively. A metal pollution index （MPI） demonstrated that sediment, interstitial water, and seagrasses in the sites located nearest anthropogenic sources of pollution had the most abundant metal concentrations. There was obvious seasonal variation of these metals in the three seagrasses with higher concentrations of Cu, Pb and Zn in January and Cd in July. Furthermore, the relationships between metal concentrations in seagrasses and environmental compartments were positively correlated significantly. The bioconcentration factors （BCF） demonstrated that Cd from the tissues of the three seagrasses might be absorbed from the sediment by the roots. However, for C. rotundata, Zn is likely to be derived from the seawater through its blades. Therefore, the blades of T. hemprichii, E. acoroides and C. rotundata are potential bio-indicators to Cd content in sediment, and additionally Zn content （C. rotundata only） in seawater.

关键词： metal contamination seagrass bioaccumulation bio-indicator South China Sea

Potential of Nassarius nitidus for monitoring organotin pollution in the lagoon of Bizerta (northern Tunisia)

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Journal of Environmental Sciences 2011年第9期23卷 1551-1557页

作者： Youssef Lahbib Sami Abidli Pablo Rodríguez González Josè Ignacio Garía Alonso Najoua Trigui-El Menif Department of biology Laboratory of Environment BiomonitoringGroup of Applied and Fundamental MalacologyFaculty of Sciences of BizertaUniversity of Carthage Department of Physical and Analytical Chemistry Faculty of ChemistryUniversity of Oviedo

Imposex and butyltin burden were assessed in Nassarius nitidus,Bolinus brandaris and Hexaplex trunculus collected at five stations in the Bizerta *** analysis showed that imposex followed type （a） in *** （distal evolution）,against type （d） in the two muricids （proximal evolution）.Imposex indices were higher in sites located nearby sources of tributyltin and *** was the least affected species of the five sites,followed by *** and *** analysis showed lower accumulation in *** followed by *** and *** study has allowed the gathering of data on imposex in a snail studied for the first time in Tunisia （***）.It suggests the possibility of using such snail as a complementary species for organotin monitoring programs in the Mediterranean and further confirmed that *** is the most suitable species for such investigations.

关键词： organotins bio-indicator North Africa

Effects of the accumulation of the rare earth elements on soil macrofauna community

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Journal of Rare Earths 2010年第6期28卷 957-964页

作者：李金霞红梅殷秀琴刘继亮 College of Urban and Environmental Science Northeast Normal University Faculty of Resources and Environment Baotou Teachers' College College of Ecology and Environment Inner Mongolia Agricultural University Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences

The accumulation of rare earth elements (REEs) in soil has occurred due to the pollution caused by the exploitation of rare earth resources and the wide rare earth fertilizers in agriculture. The accumulation of REEs has a toxic effect on the soil macrofauna community. 12 study samples were collected near a mine tailings dam with a large amount of REEs by distance gradient sample method. The total concentration of REEs was analyzed and the results were compared with that of the sample from a control site. The effects of the amount of REEs in the soil on the soil macrofauna community were also analyzed. The results showed that the accumulation of REEs in soil was significant in the study area and its concentration was strongly correlated with the distance from the pollution source. One-way ANOVA analysis indicated the significant differences in soil macrofauna communities among the different sites. The ordination obtained through the redundancy analysis demonstrated that the concentration of REEs and the total nitrogen, total potassium and pH, had affected the soil macrofauna community. A small amount of REEs in the soil can promote the diversity of soil macrofauna, but a large amount of REEs can reduce its diversity. The insect groups of Carabidae and Dermaptera were comparatively sensitive to the concentration of REEs in soil, and could be used as an indicator of soil pollution of REEs. However, the Formicidae and Stibaropus formosanus exhibited a high tolerance to REEs in soil. We believe that it is very important for the soil environment protection to strictly control the application of the rare earth fertilizers in agriculture in China.

关键词： rare earth elements soil fauna soil pollution bio-indicator

Characteristics of zooplankton community in North Yellow Sea unveiled an indicator species for the Yellow Sea Warm Current in winter: Euchaeta plana

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Journal of Oceanology and Limnology 2020年第6期38卷 1762-1770页

作者： CHEN Hongju ZHU Yanzhong LIU Guangxing Key Laboratory of Marine Environment and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266200China Research Center of Ecological Environment for Yangtze River Economic Belt Chinese Research Academy of Environmental SciencesBeijing 100012China

Zooplankton distributions are largely influenced by both biotic and abiotic factors in the surrounding *** zooplankton species can be used as bio-indicators for particular currents and water masses to help discover the dynamics of water current in the *** this study,we investigated the distribution of zooplankton in North Yellow Sea(NYS)during winter when the Yellow Sea Warm Current(YSWC)influenced that *** communities in the NYS were dominated by temperate and warm-temperate species,such as Calanus sinicus,Paracalanus parvus,Acartia bifilosa,and Sagitta *** warm-water species,Eucheata plana and Sagitta enflata were also *** analysis grouped NYS zooplankton into three communities,the Shandong Coastal Community(SCC)in the Shandong neritic area,the Yellow Sea Central Community(YSCC)in the central waters of the NYS,and the Liaoning Coastal Community(LCC)in the Liaoning neritic *** varied significantly among these communities,with an average of 102.2 ind./m^3 in SCC,179.8 ind./m^3 in YSCC,and 1244.2 ind./m^3 in *** and the bottom(3 m from the sea floor)temperature were likely the primary abiotic factors influencing zooplankton *** appearance of ***,an indicator species for the YSWC path,indicated a significant northwestward trend for the YSWC in 2007.

关键词： North Yellow Sea Yellow Sea Warm Current zooplankton bio-indicator community structure

GST(phi) gene from Macrophyte Lemna minor is involved in cadmium exposure responses

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Chinese Journal of Oceanology and Limnology 2016年第2期34卷 342-353页

作者：陈世华陈新窦伟红王亮尹海波郭善利 Key Laboratory of Plant Molecular & Developmental biology College of Life Sciences Yantai University

Reactive oxygen species （ROS） scavengers, including ascorbate peroxidase, superoxide dismutase, catalase and peroxidase, are the most commonly used biomarkers in assessing an organisms＇ response to many biotic and abiotic stresses. In this study, we cloned an 866 bp GST（phi） gene in Lemna minor and investigated its characteristics, expression and enzymatic activities under 75 lamol/L cadmium concentrations in comparison with other ROS scavengers. GST（phi） gene expression patterns were similar to those of other scavengers of ROS. This suggests that GST（phi） might be involved in responding to heavy metal （cadmium） stress and that its expression level could be used as a bio-indicator in monitoring cadmium pollution.

关键词： Lemna minor GST(phi) gene heavy metal gene expression bio-indicator

Ecological environment response of benthic foraminifera to heavy metals and human engineering: A case study from Jiaozhou Bay, China

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China Geology 2022年第1期5卷 12-25页

作者： Jing-yi Cong Hai-yan Long Yong Zhang Nan Wang Lab for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Qingdao Institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdao 266071China College of Marine Geosciences Ocean University of ChinaQingdao 266100China College of Oceanic and Atmospheric Ocean University of ChinaQingdao 266100China

The estuary and coastal zone are the key areas for socio-economic development,and they are also the important channels for pollutants transported to the *** construction of the Jiaozhou Bay Bridge changed the hydrodynamic condition of the bay,which made the self-purification capacity of the bay weakened and the pollution in the estuary and adjacent coastal zone become more *** this study,55 surface sediment samples were collected from the three seriously polluted estuaries and the adjacent coastal zone of Jiaozhou Bay to comprehensively study how the benthic foraminifera response to heavy metal pollution and human engineering,and to assess the ecological risks of the bay.A total of 80 species,belonging to 42 genera,were identified in this *** results showed that Cu,Pb,Cr,Hg,Zn,and As had low to median ecological risks in the study area which would definitely affect the ecological *** construction of the Jiaozhou Bay Bridge has resulted in pollutants accumulated at the river mouth of Loushan River,which has adverse effects on the survival and growth of benthic *** lowest population density and diversity as well as the highest FAI(Foraminiferal Abnormality Index)and FMI(Foraminiferal Monitoring Index)occurred at Loushan River Estuary which indicated that the ecological environment of the northeastern part of Jiaozhou Bay(Loushan River Estuary)had been seriously *** River and Haipo River estuaries and the adjacent coastal zone were slightly polluted and had low ecological *** a consequence,it suggested that the supervision of industrial and domestic waste discharge and the protection of the ecological environment in northeast Jiaozhou Bay should be paid more attention.

关键词： Benthic foraminifera Heavy metal bio-indicator Foraminiferal Abnormality Index Foraminiferal Monitoring Index Estuary Pollution Ecological environment Enviroment geological survey engineering Jiaozhou Bay Bridge China

Characterization of Health and Environmental Risks of Pesticide Use in Market-Gardening in the Rural City of Tori-Bossito in Benin, West Africa

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Journal of Environmental Protection 2012年第3期3卷 241-248页

作者： Claude Ahouangninou Thibaud Martin Patrick Edorh Sahabi bio-Bangana Onil Samuel Louis St-Laurent Sylvain Dion Benjamin Fayomi Centre Interfacultaire de Formation et de Recherche en Environnement pour le Développement Durable Université d’Abomey Calavi Cotonou Bénin Cirad UPR Hortsys Montpellier France Direction de la Santé Environnementale et de la Toxicologie Institut National de Santé Publique du Québec Québec Canada Direction du Secteur Agricole et des Pesticides Ministère du Développement Durable de l’Environnement et des Parcs Québec Canada Institut des Sciences biomédicales Appliquées Université d’Abomey Calavi Cotonou Bénin

A study on the use of pesticides in market-gardening production was carried out on 108 market-gardeners in the rural city of Tori-Bossito in Southern Benin. The objective of the study was to characterize the potential risks of pesticides usage by farmers and the impacts on their health and on the environment. Two risk indexes were calculated for each pesticide: an environmental risk index (ERI) and a health risk index (HRI). First stage larva of the mosquito Aedes aegypti were used as bio-indicator for detecting insecticide residue in vegetable before their harvesting on the farms. The highest ERI were obtained for carbofuran, chlorpyriphos ethyl and endosulfan. Pesticide residues were found in 42% of the samples of leaves of eggplant, cucumber, amaranth and solanum. Vegetables growers used pesticides that may be highly hazardous and which were not registered in most cases. These situations could have unexpected consequences including the exposure of consumers to health hazards.

关键词： Vegetable Pesticide Residues bio-indicator Risk Index Environment Health

bio-drilling, Compaction Alleviation, and Fate of Storm-Water Management

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Journal of Civil Engineering and Architecture 2020年第10期14卷 525-531页

作者： Yogendra Y.Raut Warren A.Dick The Air Force Institute of Technology(AFIT) 2950 Hobson WayWright-Patterson AFBOH 45433USA School of Environment and Natural Resources The Ohio State UniversityColumbusOH 43210USA

Compaction due to urbanization and farm operations disrupt natural soil profiles,increase impervious surface areas and decrease vegetative *** disruptions increase storm-water runoff at the expense of ground water recharge,degrading water quality and impairing aquatic habitats.A completely randomized experiment was conducted at the OSU/South Centers,Piketon,OH to assess the effect of Daikon radish(Raphanus sativus ***)on alleviating *** included long-term tillage,long-term no-till(NT)and a fallow soil compacted with farm equipment with and without Daikon *** was sown in mid-August and plants were winter-killed at the onset of first frost when the temperature dropped to-2.22°C(28°F).To assess progress in compaction alleviation,a model was developed to extrapolate information on soil porosity as an indicator of hydrological properties of *** population dynamics were also considered as a bio-indicator of compaction *** adoption of radish used as bio-drilling,alleviated overall compaction by 40%with reductions ranging from 90%at 0-13 cm to 30%at 56-64 cm *** fallow compacted soil with radish had the highest population of earthworm with total body mass of 3.6 kg·m-3,followed by NT at 0.8 kg·m^-3,and till at 0.4 kg·m^-3(pbio-drilling has potential to synergistically alleviate the effect of compaction,minimize flash-flooding and improve water quality.

关键词： bio-drilling bio-indicator decomposition compaction porosity Daikon Radish(Raphanus sativus L.var.oleiferus) earthworm population dynamics NT conventionally tilled(CT) penetration resistance