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Assessment of metal trace elements in the echinoderm Paracentrotus lividus from the North-Eastern coast of Algeria 阿尔及利亚东北海岸棘皮动物中金属微量元素的测定
IF 0.8 Q2 Environmental Science Pub Date : 2023-05-12 DOI: 10.15421/012318
K. Boudeffa, F. Fekrache, S. Bouhayene, N. Bouchareb, L. Zaoui, A. Benselhoub, S. Bellucci
The echinoderm sea urchin Paracentrotus lividus Lamarck, 1816 (Echinodermata, Echinoidea) is a good species to be used in environmental and toxicology research, in particular as a heavy metal bio-indicator. Our study’s objective is to evaluate the amounts of Zn, Pb, Fe, and Cu in sea urchin specimens collected from the coast of Skikda (Northeast Algeria) in order to validate the fact that sea urchins are good indicators of metal pollution and can be used effectively for environmental biomonitoring. To realize our objectives, three sampling sites were chosen based on suspected forms and sources of contamination. The main physicochemical parameters of the seawater were measured to determine their quality. 15 specimens of urchins in each station were obtained from exposed rocky surfaces and transported to the laboratory. Before dissection, the biometric parameters and the total wet weight were determined. The soft organs (gut and gonads) of individuals were separated and utilized to evaluate the levels of heavy metals. The condition index and metal indices were also determined. Our study confirmed that P. lividus may be considered a valuable bioindicator of heavy metal contamination in marine ecosystems. The results show that the amounts of heavy metals differed significantly between stations. Samples taken from the Larbi Ben M’hidi station showed greater amounts of Pb, Zn, and Cu. These amounts are above the recommended limits for fish and aquatic animals. Also, the heavy metals found in sea urchins vary depending on the physicochemical parameters, trace metals in the seawater, and the individual biometric parameters. These higher concentrations of metals in seawater and in P. lividus individuals at the Larbi Ben M’hidi station are largely caused by the construction of a massive oil industry complex and terminal with several refineries and petrochemical units near this station, as well as by a considerable amount of domestic wastewater. Finally, to avoid this metallic pollution risk, it is necessary that permanent controls be imposed as soon as possible. Urban and industrial wastes must be treated before being released, in the hope of reducing future metal concentrations.
棘皮动物海胆Paracentrotus lividus Lamarck, 1816(棘皮亚,棘皮总科)是一种很好的环境毒理学研究物种,特别是作为重金属生物指示物。本研究的目的是评价在阿尔及利亚东北部Skikda海岸采集的海胆标本中Zn、Pb、Fe和Cu的含量,以验证海胆是金属污染的良好指标,可以有效地用于环境生物监测。为了实现我们的目标,根据可疑的污染形式和来源选择了三个采样点。对海水的主要理化参数进行了测定,以确定其质量。每个站点从暴露的岩石表面采集了15个海胆标本并运送到实验室。解剖前,测定生物特征参数和总湿重。分离个体的软器官(肠道和性腺)并利用它们来评估重金属水平。测定了条件指标和金属指标。我们的研究证实,lividus可能被认为是海洋生态系统重金属污染的一个有价值的生物指标。结果表明,各监测站重金属含量差异显著。从Larbi Ben M 'hidi站采集的样本显示铅、锌和铜的含量更高。这些含量超过了鱼类和水生动物的建议限量。此外,在海胆中发现的重金属根据物理化学参数、海水中的微量金属和个体生物特征参数而有所不同。Larbi Ben M 'hidi站的海水和lividus个体中的金属浓度较高,主要是由于在该站附近建造了一个大型石油工业综合体和有几个炼油厂和石化单位的终端,以及大量的生活废水。最后,为了避免这种金属污染风险,有必要尽快实施永久性控制。城市和工业废物在排放之前必须经过处理,以期降低未来的金属浓度。
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引用次数: 2
Development of indicators for assessment of green infrastructure for a territorial network of ecological stability 区域生态稳定网络绿色基础设施评价指标的制定
IF 0.8 Q2 Environmental Science Pub Date : 2023-05-02 DOI: 10.15421/012315
J. Špulerová, D. Štefunková, C. Kulcsar, H. Kalivoda, M. Vlachovičová, D. Kočický
Landscape structure and biotic indicators have a significant role in assessing the green infrastructure of a landscape and design of a territorial ecological network. In this contribution, a methodological approach has been developed for assessing and defining indicators of current land use and biota that can be used for designing a territorial network of ecological stability. We used the assessment of ecological stability of the elements of the current landscape structure, an index of the ecological stability of a representative geo-ecosystem, the cumulative effect of high ecological stability landscape elements, and the Shannon Diversity Index (SHDI) to measure the degree of entropy, or landscape diversity. The assessment of biota was based on qualitative habitat field data and an evaluation of their overall nature conservation importance based on the type of land cover and habitats, the importance of habitats, their current conservation status, how many rare habitats are in a region, and how many vulnerable species are present in habitats. The assessment was applied on a local level, using the example of the Dolný Lopašov study area. The spatial distribution of green infrastructure is not balanced within the study area. The most significant elements of the ecological network consist of natural and semi-natural habitats that have a favourable conservation status. The Malé Karpaty Mountains, situated in the northern region, are forest-covered and have the highest ecological stability. Intensively cultivated fields are dominant in the central and southern parts of the study areas and are characterised by a low proportion of green infrastructure and low ecological stability. The results of the modelling of the cumulative impact of landscape elements on ecological stability by distance show that the cumulative impact of woodland elements positively affects the ecological stability of the area, especially in the area of intensively cultivated fields, an element with a low degree of ecological stability. Using selected indicators of current landscape structure and biota helps to assess the overall ecological stability of the area, identify the most stable areas, as well as areas with the lowest ecological stability, where it is necessary to complete and design new elements of green infrastructure to increase the function of the ecological network.
景观结构和生物指标在评估景观绿色基础设施和区域生态网络设计中具有重要作用。在这一贡献中,已经发展出一种方法学方法,用于评估和确定可用于设计领土生态稳定网络的当前土地利用和生物区系指标。利用当前景观结构要素的生态稳定性评价、代表性地质生态系统的生态稳定性指数、高生态稳定性景观要素的累积效应和Shannon多样性指数(SHDI)来衡量景观的熵值或多样性程度。生物区系的评价是基于定性的生境野外数据,并根据土地覆盖和生境类型、生境的重要性、生境目前的保护状况、一个地区有多少稀有生境以及生境中有多少脆弱物种,对其总体自然保护重要性进行评价。以Dolný Lopašov研究区域为例,将评估应用于地方一级。研究区内绿色基础设施的空间分布不均衡。生态网络中最重要的元素是具有良好保护状况的自然和半自然栖息地。mal Karpaty山脉位于北部地区,森林覆盖,生态稳定性最高。研究区中部和南部以集约耕地为主,绿色基础设施比例低,生态稳定性低。景观要素对生态稳定性累积影响的距离建模结果表明,林地要素的累积影响正向影响区域的生态稳定性,特别是在生态稳定性程度较低的集约耕地区域。利用现有景观结构和生物群的选定指标,有助于评估该地区的整体生态稳定性,确定最稳定的地区,以及生态稳定性最低的地区,在这些地区需要完成和设计新的绿色基础设施元素,以增加生态网络的功能。
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引用次数: 0
Diversity of diversity indices: Which diversity measure is better? 多样性指数的多样性:哪种多样性指标更好?
IF 0.8 Q2 Environmental Science Pub Date : 2023-05-02 DOI: 10.15421/012314
O. Kunakh, A. Volkova, G. F. Tutova, O. Zhukov
The article evaluates the dependence of the most common indices of species diversity on sample size and determines their ability to differentiate between different types of ecosystems, with a special emphasis on discriminating between natural and anthropogenic ecosystems. An approach to adjusting the indices to reduce their dependence on sample size was also proposed. The study was conducted in seven types of ecosystems: four were natural and three were anthropogenically transformed. Samples of soil animals were selected in 2011–2013 and 2021 using the same methods. A total of 20,518 soil animal specimens belonging to 202 species were collected in all study locations. The null alternative was generated by randomly selecting samples containing 2, 3, ..., 110 soil animals from the combined soil animal sample. For each gradation of sample size, 200 sample variants were formed. The density of soil macrofauna in natural ecosystems ranged from 3.6 ± 1.5 to 15.2 ± 6.9 specimens per sample, and in artificial ecosystems – from 13.2 ± 7.6 to 21.0 ± 11.9 specimens per sample. The number of species ranged from 22–80 species, and in artificial ecosystems it was 38–99 species. Indicators of species diversity correlated with each other. A high level of correlation was observed between indicators within groups of indices: indices of species richness and indices of heterogeneity and evenness. Fisher’s log-series alpha and the fundamental parameter of biodiversity were highly correlated with each other, as well as with the Margalef, species richness, and Chao’s species abundance indices. The log-normal distribution best describes the dominance patterns in terms of abundance in the natural ecosystems, and the Zipf-Mandelbrot distribution best describes the dominance patterns in terms of abundance in the artificial ecosystems. Diversity indices were ordered in the space of two dimensions, one explaining the variation between ecosystems and the other depending on sample size. The ordering of the traditional indices showed that there is a vacancy for the best index in the sense that such an index should best explain differences between ecosystems and differences between natural and artificial ecosystems. It should also be independent of sample size. The Simpson heterogeneity index and the Simpson evenness index were the best of the traditional indices, but they did not explain differences between ecosystems very well, especially when it came to distinguishing between natural and artificial ecosystems. The Margalef index, which is supposed to be independent of sample size, on the other hand, showed a very high level of dependence. Such a dependence was also found for the Menhinick index, though to a lesser extent. Obviously, size dependence negatively affects the differential ability of the indices. The corrected indices of species richness and the Shannon index are practically independent of sample size and have a greater ability to differentiate ecosystems by the lev
本文评估了最常见的物种多样性指数对样本量的依赖性,并确定了它们区分不同类型生态系统的能力,特别强调了自然生态系统和人为生态系统的区分。还提出了一种调整指标的方法,以减少其对样本量的依赖。该研究在七种类型的生态系统中进行:四种是自然的,三种是人为转化的。2011-2013年和2021年采用相同的方法选取土壤动物样本。各研究点共采集202种20518份土壤动物标本。通过随机选择包含2,3,…的样本来生成空替代。,联合土壤动物样本中土壤动物110只。对于每个样本量的分级,形成200个样本变体。自然生态系统土壤大型动物密度为3.6±1.5 ~ 15.2±6.9只/样,人工生态系统为13.2±7.6 ~ 21.0±11.9只/样。物种数量在22 ~ 80种之间,人工生态系统为38 ~ 99种。物种多样性指标之间存在相关性。物种丰富度指数与异质性和均匀度指数组内各指标间均存在较高的相关性。Fisher’s对数序列α与生物多样性基本参数、Margalef指数、物种丰富度指数、Chao’s物种丰富度指数均呈高度相关。对数正态分布最能描述自然生态系统中丰度方面的优势模式,而Zipf-Mandelbrot分布最能描述人工生态系统中丰度方面的优势模式。多样性指数在两个维度上排序,一个维度解释了生态系统之间的差异,另一个维度则取决于样本大小。传统指数的排序表明,最佳指数在最好地解释生态系统之间的差异以及自然生态系统与人工生态系统之间的差异的意义上存在空缺。它也应该独立于样本量。Simpson异质性指数和Simpson均匀度指数是传统指数中最好的,但它们不能很好地解释生态系统之间的差异,特别是在区分自然生态系统和人工生态系统时。另一方面,应该与样本量无关的Margalef指数显示出非常高的依赖性。在Menhinick指数中也发现了这种依赖关系,尽管程度较轻。显然,规模依赖性对指数的差异能力有负向影响。物种丰富度校正指数和Shannon指数与样本大小基本无关,具有较强的多样性水平区分生态系统的能力,自然生态系统的校正指数始终高于人工生态系统。对样本量的依赖使得不同生态系统的指数几乎无法比较,这使得它们的使用毫无意义。即使样本量的微小差异也会导致多样性指数值的显著偏差。应用Michaelis-Menten模型,提出了一种校正物种丰富度指数和Shannon指数的方法。修正后的指数与样本量基本无关,对生态系统个体特征和人为转化程度的差异能力显著增强。
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引用次数: 0
Diagnosis of the rainfall-wheat yield relationship in the current and future climate change conditions in Eastern Algeria 阿尔及利亚东部当前和未来气候变化条件下降雨-小麦产量关系的诊断
IF 0.8 Q2 Environmental Science Pub Date : 2023-05-02 DOI: 10.15421/012316
N. Chourghal, H. Belguerri, K. Maamri, F. Bahlouli, A. Salamani, M. Benaini
Future projections indicate that rain-fed agriculture in North Africa is among the most vulnerable in the world in the context of future climate change. This article aims to diagnose the relationship between rainfall and wheat yield in both current and future climatic situations in a semi arid agro-climatic conditions represented by the region of Bordj Bou Arreridj. For the current situation, we used 15 years (1995–2009) of recorded rainfall and durum wheat yield series. Future rainfall projections (2071–2100) were generated by the MED-CORDEX climate model version CCLM4-8-19 under RCP 6.0 scenario. Simulated data over the observed period and that of the future on the maximum evapotranspiration (ETM) of durum wheat and the water deficit (WD) accumulated over the cycle as well as future yields are obtained using a simple agro meteorological crop simulation model, previously validated. In both current and future situations, precipitations, ETM, WD and yields data are first analyzed, then yields are related by regression to three components of rainfall: annual rainfall, cumulative rainfall over the crop cycle (November–June) and cumulative rainfall during spring (March–May). In the observed climate, annual precipitation averages 382.3 ± 96.3 mm, cumulative rainfall over the crop cycle (November–June) averages 278.3 mm and cumulative rainfall during spring is 101.9 mm. These last decrease to 303.7 ± 99.4, 232.3 and 83.3 mm in the future situation. Observed yields (1995–2009) averages1.9 ± 0.64 q/ha in the observed situation and decrease to 15.5 ± 0.54 q/ha in future climate. ETM are low and WD values are high in the current climate, with a worsening of the situation in the future climate, particularly during spring. The correlation between yields and précitations is always positive in both weather conditions, but the best R2 are 0.65 and 0.82 and concern spring rains. In semi-arid regions, cumulative rainfall towards the end of the growing season is currently impacting the grain yield of durum wheat and will become more decisive in the context of future climate change.
未来的预测表明,在未来气候变化的背景下,北非的雨养农业是世界上最脆弱的。本文旨在诊断以Bordj Bou Arreridj地区为代表的半干旱农业气候条件下当前和未来气候条件下降雨量与小麦产量的关系。针对目前的情况,我们使用了15年(1995-2009)的记录降雨量和硬粒小麦产量系列。在RCP 6.0情景下,采用MED-CORDEX气候模式CCLM4-8-19对2071-2100年的未来降水进行了预估。利用一个简单的农业气象作物模拟模型获得了观测期和未来的硬粒小麦最大蒸散量(ETM)和整个周期积累的水分亏缺量(WD)以及未来产量的模拟数据。在当前和未来两种情况下,首先分析降水量、ETM、WD和产量数据,然后回归到降雨量的三个组成部分:年降雨量、作物周期累积降雨量(11 - 6月)和春季累积降雨量(3 - 5月)。在观测气候中,年平均降水量为382.3±96.3 mm,作物周期(11 - 6月)平均累积降雨量为278.3 mm,春季累积降雨量为101.9 mm。在未来的情况下,最后一个下降到303.7±99.4、232.3和83.3 mm。观测到的产量(1995-2009年)在观测到的情况下平均为1.9±0.64 q/ha,在未来气候下将降至15.5±0.54 q/ha。在当前气候条件下,ETM值偏低,WD值偏高,未来气候条件下,特别是春季,情况会进一步恶化。在两种天气条件下,产量和产量之间的相关关系都是正的,但最好的R2分别为0.65和0.82,且与春雨有关。在半干旱地区,临近生长季节结束时的累积降雨目前正在影响硬粒小麦的产量,在未来气候变化的背景下,这一影响将更具决定性。
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引用次数: 0
Detection and prevalence of extended spectrum β-lactamases production among Enterobacteriaceae isolated from urinary tract infections 尿路感染肠杆菌科中β-内酰胺酶的广谱检测与流行
IF 0.8 Q2 Environmental Science Pub Date : 2023-04-05 DOI: 10.15421/012317
R. Fares, M. Debabza, A. Mechai
Urinary tract infections (UTIs) by extended-spectrum β-lactamase producing Enterobacteriaceae (ESBL-E) have become an important public health problem with a substantial economic burden, as they lead to more complicated infections, longer duration of treatment, and increases in patient mortality. A total of 1267 urine samples were collected from patients during the period of 2018 to 2020. The isolates were identified based on colony morphology and biochemical tests. Antimicrobial susceptibility testing was done by modified Kirby Bauer disc diffusion method. Resistant isolates to third generation cephalosporins were tested for ESBL production by double-disk synergy test (DDST), DDST methods on MH agar plates supplemented with cloxacillin and by confirmatory double disk test (DDT). 400 strains causing UTIs were identified and classified as members of Enterobacteriaceae. The results of antimicrobial susceptibility tests showed that 68.5% (274/400) of the Enterobacteriaceae isolates were multi-drug resistant (MDR) strains. The overall prevalence of ESBL-E was 59.5% (238/400). The highest frequencies of ESBL-E were observed in internal medicine devices (68/400) and the highest ESBL production was observed in E. coli (85/238). The ESBL producing isolates were significantly resistant to penicillins and cephalosporins compared to non-ESBL producers. However, those ESBL-E strains were sensitive to imipenem (80.2%) and nitrofurantoin (87.8%). High levels of MDR strains and ESBL-E in our study highlights the need for applying specific infection control measures, and accordingly we urge physicians to opt for specific strategies for regular surveillance of uropathogenic bacteria.
由产广谱β-内酰胺酶肠杆菌科(ESBL-E)引起的尿路感染(uti)已成为一个具有重大经济负担的重要公共卫生问题,因为它们导致更复杂的感染、更长的治疗时间和患者死亡率的增加。2018 - 2020年共收集患者尿液样本1267份。通过菌落形态和生化试验对分离菌株进行鉴定。药敏试验采用改良Kirby - Bauer纸片扩散法。采用双盘协同试验(DDST)、添加氯西林的MH琼脂平板DDST法和验证性双盘试验(DDT)对第三代头孢菌素耐药菌株进行ESBL生产试验。鉴定出400株引起uti的菌株,并将其归类为肠杆菌科成员。药敏试验结果显示,68.5%(274/400)的肠杆菌科分离株为多重耐药菌株。ESBL-E的总患病率为59.5%(238/400)。ESBL- e在内科器械中出现频率最高(68/400),在大肠杆菌中产生频率最高(85/238)。与非ESBL生产者相比,产生ESBL的分离株对青霉素和头孢菌素具有显著的耐药性。ESBL-E菌株对亚胺培南(80.2%)和呋喃妥英(87.8%)敏感。在我们的研究中,高水平的耐多药菌株和ESBL-E强调了应用特定感染控制措施的必要性,因此我们敦促医生选择特定的策略来定期监测尿路致病菌。
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引用次数: 0
The main factors and prospects for the restoration of biodiversity in technogenic territories (on the example of the Poltava Mining and Processing Plant) 技术领土生物多样性恢复的主要因素和前景(以波尔塔瓦采矿和加工厂为例)
IF 0.8 Q2 Environmental Science Pub Date : 2023-03-10 DOI: 10.15421/012311
А. B. Chaplygina, О. V. Filatova, L. M. Litvin, V. Nykyforov
Mining activities radically change natural ecosystems, the recovery of which is not possible without the restoration of native or transformed communities of autotrophic and heterotrophic organisms. In order to analyze the success of biodiversity restoration using unified methods, an inventory of higher plant flora and avifauna species in the technogenic territories of the Poltava Mining and Processing Plant was carried out. The dominant species identified in mining dumps, tailings, bypass and drainage canals, urban wastewater treatment and bioengineering facilities and on the PMP territory have been studied in detail. The studies were carried out in the spring-summer period of 2021–2022. The avifauna includes 140 species belonging to 18 orders and 45 families (Passeriformes predominate – 62.0%). 103 species nest on the PMP territory, 32 nomadic and 5 transient species are also registered. The nesting avifauna is dominated by representatives of both native nemoral (16.0%, n = 103) and forest-steppe (13.0%) and tropical (14.0%) avifauna. A significant number of birds belong to limnophiles, which prevail in the territories of the urban wastewater treatment plant (66.7%, n = 30) and tailings (62.5%, n = 24). They are also common in the bypass and drainage canals, where hydro- and hygrophilous phytocenoses have formed, similar to floodplain and real meadows as part of adjacent wetland ecosystems. Among the surrounding natural biogeocenoses, there are no steppe ones with their inherent unique floristic composition, which explains the small number of stepants in the studied flora and campophiles in the avifauna. In recovery successions, general patterns were revealed: biogeocenoses surrounding the technogenic territories of the PMP are the main source of producer diasporas and a variety of consumers, which are so necessary for the restoration of degraded landscapes. Phanerophytes from the genera Populus, Pinus, Fraxinus, Ulmus, Morus, Juglans, etc. are determinants in the sylvacenoses formed on the dumps and territories of the plant. Therefore, dendrophiles characteristic of neighbouring pine and floodplain forests, as well as garden phytocenoses in the private sector territory, dominate in the ornithocomplexes. Nationally rare avifauna includes 5 species, two of which nest. Among the identified bird species, the following nesting species are listed in the Red Book of Ukraine: Columba oenas, Himantopus himantopus, as well as transient and nomadic species: Hieraaetus pennatus, Haliaeetus allbicilla, Milvus migrans. The success of the natural formation of plant communities, the rich ornithological complex with the participation of rare species, and the location of the PMP territory within the migration routes indicate the expediency of further research into the possibilities of their inclusion in the nature reserve fund with the status of “territory of renaturalization”.
采矿活动从根本上改变了自然生态系统,如果不恢复自养和异养生物的原生或转化群落,自然生态系统的恢复是不可能的。为了用统一的方法分析生物多样性恢复的成功与否,对波尔塔瓦采矿和加工厂的技术区域内的高等植物区系和鸟类物种进行了清查。对矿山排土场、尾矿库、旁道和排水渠、城市污水处理和生物工程设施以及PMP区域内发现的优势种进行了详细研究。研究在2021-2022年春夏期间进行。鸟类有18目45科140种,以雀形目为主,占62.0%。103种在保护区内筑巢,32种为游牧物种,5种为流动物种。巢鸟区系以本地草原(16.0%,n = 103)、森林草原(13.0%)和热带(14.0%)鸟类代表为主。在城市污水处理厂(66.7%,n = 30)和尾矿库(62.5%,n = 24)中,有相当数量的鸟类属于嗜湖动物。它们在旁道和排水渠中也很常见,在那里形成了亲水和亲水的植物群落,类似于洪泛区和真正的草甸,是邻近湿地生态系统的一部分。在周围的天然生物地系中,没有草原地系具有其固有的独特区系组成,这就解释了所研究的植物区系中草原地系较少,而鸟类区系中喜树植物较少。在恢复序列中,揭示了一般模式:PMP技术区域周围的生物地球群落是生产者散居和各种消费者的主要来源,这对于退化景观的恢复是非常必要的。杨属、松属、黄曲霉属、榆属、桑属、核桃属等的显生植物是在植物的倾倒和领土上形成的森林的决定因素。因此,邻近松林和洪泛平原森林的嗜树植物特征,以及私营部门领土上的花园植物,在鸟类复合体中占主导地位。全国珍稀鸟类有5种,其中2种筑巢。在已确定的鸟类中,下列筑巢物种被列入乌克兰红皮书:Columba oenas, Himantopus Himantopus,以及瞬时和游牧物种:Hieraaetus pennatus, Haliaeetus allbicilla, Milvus migrans。植物群落自然形成的成功,珍稀物种参与的丰富的鸟类群落,以及PMP领地在迁徙路线内的位置,表明了进一步研究其以“再自然化领地”的身份纳入自然保护区的可能性的便宜性。
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引用次数: 3
New distribution areas of some species of plants on the southern part of the Caspian coast 里海沿岸南部某些植物种类的新分布区
IF 0.8 Q2 Environmental Science Pub Date : 2023-03-09 DOI: 10.15421/012313
H. Z. Huseynova
Plant species were collected in the botanical-geographic regions of Lankaran-Mughan and Lankaran lowland located on the sou­thern part of the Caspian coast. During the ecological-geobotanical studies we conducted on the southern part of the Caspian coast, we obtained information about the morphological features and systematic taxa of the wild flora of Lankaran-Mugan and Lankaran lowland botanical-geographical regions. In this article we describe the ecology and distribution of Dianthus cyri Fisch. & C. A. Mey, Vicia ervilia (L.) Willd., Trigonella cancellata Deef., Cruciata articulata (L.) Ehrend, Triglochin maritimum L., Crypsis alopecuroides (Pill. et Mitt.) Schard., Poa masenderana Freyn & Sint., Nymphaea alba L., Arabis mollis Stev., Acer hyrcanum Fisch, Tamarix meyeri Boiss., Symphytum pereginum Ledeb., Nonnea decurrens (C. A. Mey.) G. Donfil., Veronica ceratocarpa C. A. Mey., Campanula odontosepala Boiss., Achillea millefolium L., Carduus pystrix C. A. May., Centaurea hyrcanica Bornm. These species are endemic, rare, endangered, and included in the "Red Book of Azerbaijan". In addition to being decorative, they have a certain significance as a raw material for human and veterinary medicine.
植物种类收集于里海海岸南部兰卡兰-穆甘和兰卡兰低地的植物地理区域。在里海南部进行的生态地球植物学研究中,我们获得了兰卡兰-穆干和兰卡兰低地植物地理区野生植物的形态特征和系统分类群。本文介绍了石竹的生态和分布。& C. A. Mey, Vicia ervilia (L.)Willd。,消三角蝽。,十字花科(L.)三叶甘油三酯,隐花(丸)。等手套)。Schard。, Poa masenderana Freyn & st。,尼法亚·阿尔巴·L.,阿拉比斯·莫里斯·史提夫。,水杨槭,柽柳。会阴共生;(C. A. Mey.)g . Donfil。, Veronica ceratocarpa C. A. Mey。Campanula odontosepala Boiss;,千叶阿喀琉斯L.,桔梗c.a.五月。半人马座(centauria hycanica Bornm)。这些物种是特有的,稀有的,濒临灭绝的,并被列入“阿塞拜疆红皮书”。它们除了具有装饰作用外,作为人药和兽药的原料也有一定的意义。
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引用次数: 1
Marine pollution effects on the reproduction process of Perinereis cultrifera (Annelida, Polychaeta) in Algeria 海洋污染对阿尔及利亚多毛纲动物繁殖过程的影响
IF 0.8 Q2 Environmental Science Pub Date : 2023-03-06 DOI: 10.15421/012312
A. Sebbih, N. Moumeni, N. Z. Belfetmi, T. Daas, O. Maamcha
The Mediterranean Sea is one of the busiest areas worldwide in terms of maritime activity and faces considerable anthropogenic disturbances, such as pollution by hydrocarbons and heavy metals. This study evaluated the environmental status of three sites on the Algerian coast using the annelid polychaete Perinereis cultrifera as a biomonitoring sentinel species. It included different reproductive parameters such as oocyte diameter, frequency distributions, sexual maturity index, biochemical quantitative parameters represented by the vitellogenins and vitellins, and a histological study of the coelome during the reproductive period. The results showed that the females collected from El-Kala (healthy site) have the highest diameter 304.1 ± 24.3 μm during April but the values were increased in Annaba 290.0 ± 21.0 μm and Skikda 245.3 ± 26.7 μm. Significant differences were observed between worms from the three study sites during the three months of the study. Moreover, the size-frequency indicated that a relatively high proportion of females containing mature oocytes was found in April in females collected at El-Kala 52.4%, 46.4% in females collected at Annaba and 36.7% in females collected at Skikda. In addition, regarding the sexual maturity index, the highest values were recorded in April (3.8, 2.9, and 1.9) at the El-Kala, Annaba, and Skikda study sites. However, the biochemical analysis demontrated that the highest mean concentration of vitellogenin was in females of El-Kala (5.3 ± 0.3 µg/mg of coelomic fluid) in April, and the lowest mean concentration was measured in females of Skikda (1.5 ± 0.2 µg/mg of coelomic fluid). Therefore, the highest mean concentration of vitellin was measured in females of El-Kala (4.4 ± 0.2 µg/mg of oocytes) in April, while the lowest mean concentration of vitellin was measured in females of Skikda (1.02 ± 0.2 µg/mg of oocytes) in May. Significant differences were observed between worms from the three sites during the three months of the study. Furthermore, histological observations revealed that oogenesis was asynchronous, with oocytes at different stages of vitellogenesis simultaneously present. The structure of the oocytes of females collected at El-Kala showed intense vitellogenic activity due to the presence of very dense yolk cells. In contrast, the oocytes of the females collected from the two polluted sites (Annaba and Skikda) were small, vitellogenesis presented low intensity, and yolk cells were less frequent at the periphery and less uniform at the cytoplasmic mass; the nucleus was smaller, indicating a slower vitellogenic activity. These observations confirm the previously obtained results.
就海洋活动而言,地中海是世界上最繁忙的地区之一,面临着相当大的人为干扰,如碳氢化合物和重金属污染。本研究利用环节动物多毛动物(Perinereis cultrifera)作为生物监测哨兵物种,对阿尔及利亚海岸3个地点的环境状况进行了评价。包括卵母细胞直径、频率分布、性成熟指数等不同生殖参数,以卵黄原蛋白和卵黄蛋白为代表的生化定量参数,以及生殖期体毛体的组织学研究。结果表明,4月份在El-Kala(健康点)采集的雌虫直径最高,为304.1±24.3 μm, Annaba为290.0±21.0 μm, Skikda为245.3±26.7 μm;在三个月的研究中,三个研究地点的蠕虫之间观察到显著的差异。此外,大小频率显示,4月份在El-Kala采集的雌性中含有成熟卵母细胞的比例较高,为52.4%,在Annaba采集的为46.4%,在Skikda采集的为36.7%。此外,就性成熟指数而言,El-Kala、Annaba和Skikda研究地点在4月份录得最高值(3.8、2.9和1.9)。然而,生化分析表明,4月份El-Kala雌性的卵黄原蛋白平均浓度最高(5.3±0.3µg/mg体腔液),Skikda雌性的卵黄原蛋白平均浓度最低(1.5±0.2µg/mg体腔液)。因此,El-Kala雌性的卵磷脂平均浓度在4月份最高(4.4±0.2µg/mg卵母细胞),而Skikda雌性的卵磷脂平均浓度在5月份最低(1.02±0.2µg/mg卵母细胞)。在三个月的研究中,三个地点的蠕虫之间观察到显著的差异。此外,组织学观察显示卵发生是不同步的,卵黄形成的不同阶段的卵母细胞同时存在。在El-Kala收集的雌性卵母细胞的结构由于存在非常致密的卵黄细胞而显示出强烈的卵黄生成活性。相比之下,在两个污染地点(Annaba和Skikda)采集的雌性卵母细胞较小,卵黄发生强度低,卵黄细胞在细胞质团中较少出现,卵黄细胞在细胞质团中不均匀;细胞核较小,表明卵黄形成活性较慢。这些观察证实了先前得到的结果。
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引用次数: 0
Natural aspect of the megalithic cultural heritage area of the Bada Valley (Central Sulawesi): Vegetation composition and biodiversity analyses Bada山谷(苏拉威西中部)巨石文化遗产区的自然方面:植被组成和生物多样性分析
IF 0.8 Q2 Environmental Science Pub Date : 2023-02-28 DOI: 10.15421/012309
S. Rahim, A. Ambo, D. W. Baderan, M. S. Hamidun, M. H. Angio, E. Ariyanti, S. Sunardi
The Bada Valley is one of the Lore Lindu Megalithic Cultural Heritage areas, which is one of the first four biosphere reserves in Indonesia. The Bada Valley area offers cultural attractions that combine with nature in the form of cultural landscapes such as handicrafts from bark, hilly landscapes that offer panoramic beauty, and preserve dozens of megalithic sites from prehistoric times as well as tourist cruising areas. The area is surrounded by densely forested mountains and forms one of the most important water catchment areas for the Watershed. However, there is a lack of studies on the vascular flora. No data on plant diversity has been reported, including plant inventory, plant identification, vegetation composition, and biodiversity analyses (diversity index, evenness index, and plant species richness index). The study aimed to determine the diversity index, evenness index, and plant species richness index in the Bada Valley cultural area, Poso Regency, Central Sulawesi. This study used an exploring technique with purposive sampling. Additional information was recorded in the form of the collector’s name, collection number, collection date, location, and habitus, which were recorded in the observation sheet that had been prepared. Identification of plants was carried out using the procedure for observing plant morphological characters, which included special features in each class and family or genus down to the species level. The results of the study found the vegetation composition for herbaceous strata (555 individuals), trees (91 individuals), shrubs (64 individuals), and vines (57 individuals). The diversity index value of each stratum is different for trees (H’ = 1.20), herbs (H’ = 1.92), shrubs (H’ = 1.32), and vines (H’ = 0.62). The diversity of plants in the Bada Valley in the tree, herb, and shrub strata was moderate (1.0 < H’ < 3.0), and the encroaching plant stratum had low diversity (H’ < 1.0). The evenness index at the level of shrubs, vines, herbs, and trees has values of 0.95, 0.90, 0.83, 0.61, respectively. The species richness index of plants in the Bada Valley is in a low category (R < 3.5), with R values for herbaceous plants (1.42), trees (1.33), shrubs (0.72), and vines (0.24). Information on plant biodiversity is used as a database for ecotourism development in the Bada Valley Cultural Heritage area. Research data can be used to support the local government in regulating the utilization of the Bada Valley Cultural Heritage area.
Bada山谷是洛尔林杜巨石文化遗产区之一,是印度尼西亚首批四个生物圈保护区之一。Bada Valley地区提供了与自然相结合的文化景观,如树皮工艺品,丘陵景观,提供全景美景,保存了数十个史前巨石遗址以及旅游游览区。该地区被茂密的森林山脉包围,形成了流域最重要的集水区之一。然而,对维管束植物区系的研究较少。关于植物多样性的数据尚未报道,包括植物清查、植物鉴定、植被组成和生物多样性分析(多样性指数、均匀度指数和植物物种丰富度指数)。本研究旨在确定苏拉威西中部Poso Regency Bada Valley文化区植物多样性指数、均匀度指数和物种丰富度指数。本研究采用目的性抽样的探索方法。其他信息以收集者姓名、收集编号、收集日期、地点和习性的形式记录在已准备好的观察单上。植物鉴定采用观察植物形态特征的方法进行,包括每个纲、科或属的特殊特征,直至种水平。研究结果发现,植被组成为草本层(555个个体)、乔木层(91个个体)、灌木层(64个个体)和藤蔓层(57个个体)。树木(H′= 1.20)、草本(H′= 1.92)、灌木(H′= 1.32)、藤蔓(H′= 0.62)各层多样性指数不同。八达河谷乔木、草本和灌木层植物多样性为中等水平(1.0 < H′< 3.0),入侵植物层植物多样性为低水平(H′< 1.0)。灌木、藤蔓、草本和乔木的均匀度指数分别为0.95、0.90、0.83和0.61。八达河谷植物物种丰富度指数处于低水平(R < 3.5),草本植物R值为1.42,乔木R值为1.33,灌木R值为0.72,藤蔓R值为0.24。利用植物生物多样性信息作为八达谷文化遗产区生态旅游开发的数据库。研究数据可为地方政府规范八达谷文化遗产区利用提供依据。
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引用次数: 0
Features of the seasonal dynamics of airborne fungal spore concentrations in Ukraine 乌克兰空气中真菌孢子浓度的季节性动态特征
IF 0.8 Q2 Environmental Science Pub Date : 2023-02-28 DOI: 10.15421/012308
Y. V. Reznik, O. Yermishev, O. Palamarchuk, O. A. Bobrovska, V. Rodinkova
Fungi represent a distinct kingdom of ubiquitous living beings. Most other organisms are constantly in contact with elements of the fungal body. In particular, the widespread vegetation of fungi in the environment, their sporulation and the further spread of spores and mycelia by air currents make the contact of fungal particles with human respiratory organs inevitable. This can lead to the development of sensitization and allergies. Therefore, the aim of the presented study was to determine the taxonomy of airborne fungal spores, the qualitative and quantitative changes in this composition at different times of the year compared with previous sporulation seasons, as well as the prevention of allergic diseases. The study of fungal sporulation was carried out from 2011 to 2021 by volumetric method using Burkard trap of a Hirst type in a 24-hour mode (from February to November). The device was installed on the roof of the chemical building of the National Pirogov Memorial Medical University, Vinnytsya. Reading of the microscopic slides obtained from air samples was carried out using light microscopes with a magnification of 400 and 1000 by the method of 12 vertical transects. It was found that spores of various taxonomic groups of fungi, namely, of Asco- and Basidiomycetes were observed throughout the growing season from March to October with the highest concentrations in mid and late summer. Thus, in June, July and August, peak concentrations of spores of the fungi Ganoderma, Coprinus, Cladosporium were observed; in July, September and October – of Ustilaginales; from July to November – of Alternaria, Epicoccum; in October – of different Basidiospores, and also Periconia, Stemphylium and Uredinales; in September – of Agrocybe. Among all studied micromycetes, concentrations of Cladosporium spores were the highest. However, significant sporulation persisted even in the autumn period, which made fungal spores a specific causative agent of airborne respiratory diseases at this time, especially against the background of low pollen concentrations. Climate change can lead to modification in the length of the fungal growing season. This information should be taken into account when predicting the symptoms of seasonal allergies in the population.
真菌代表了一个独特的无所不在的生物王国。大多数其他生物体都经常与真菌体的元素接触。特别是真菌在环境中的广泛植被,它们的产孢以及孢子和菌丝在气流中的进一步传播,使得真菌颗粒与人体呼吸器官的接触不可避免。这会导致致敏和过敏的发展。因此,本研究的目的是确定空气中真菌孢子的分类,一年中不同时间与以往孢子季节相比,其组成的定性和定量变化,以及过敏性疾病的预防。2011 - 2021年(2 - 11月),采用体积法,采用赫斯特型Burkard捕集器,24小时模式进行真菌产孢研究。该装置安装在文尼茨亚国立皮罗戈夫纪念医科大学化学大楼的屋顶上。从空气样本中获得的显微载玻片的读数是用光学显微镜进行的,放大倍数为400和1000,采用12个垂直断面的方法。结果表明,在3 ~ 10月的整个生长季节,均有不同分类类群的真菌孢子,即Asco-和担子菌,其中夏中末孢子浓度最高。因此,6月、7月和8月是灵芝(Ganoderma)、鸡毛霉(Coprinus)和枝孢霉(Cladosporium)孢子浓度的高峰期;在7月、9月和10月- Ustilaginales;从7月到11月-交替期,Epicoccum;10月-不同的担子孢子,也有Periconia, Stemphylium和Uredinales;9月——Agrocybe。在所有研究的微菌中,枝孢子菌孢子浓度最高。然而,即使在秋季,大量的孢子仍然存在,这使得真菌孢子在这个时候成为空气传播呼吸系统疾病的特定病原体,特别是在花粉浓度低的背景下。气候变化会导致真菌生长季节长度的改变。在预测人群中季节性过敏症状时,应考虑到这些信息。
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引用次数: 1
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