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1.
Esperanza Álvarez María Fernández-Sanjurjo Xosé Luis Otero Felipe Macías 《Journal of Soils and Sediments》2010,10(7):1236-1245
Purpose
Aluminium partitioning in the solid fraction and aluminium in solution in the bulk and rhizospheric soil of different plant species colonising an abandoned Cu mine slope (Calluna vulgaris, Erica cinerea and Salix atrocinerea) and mine dump (C. vulgaris and E. cinerea) were investigated. The aim of the study was to determine the changes that the species induce in the Al forms in the rhizosphere in order to adapt to heterogeneous substrates. 相似文献2.
Flora Mückschel Elijah Ollo Stefanie P. Glaeser Rolf Düring Feng Yan Hermann Velten Ulf Theilen Michael Frei 《植物养料与土壤学杂志》2023,186(5):522-531
Background
Wastewater from sewage treatment plants contains high levels of nutrients, which can be used for plant nutrition. Classical wastewater treatment plants use complex microbial consortia of autotrophic and heterotrophic microorganisms for biological wastewater treatment. Certain autotrophic microalgae (e.g., species of the genera Chlorella, Scenedesmus, and Pediastrum) accumulate nutrients from wastewater very effectively.Aims
We investigated the potential of microalgae biomass obtained from a prototype wastewater treatment plant as a source of nutrients for crops, focusing on nitrogen.Methods
We provided wheat plants with different levels of algae biomass equivalent to 60, 120, and 180 kg N per hectare or with mineral fertilizer (N, P, and K) equivalent to the amounts contained in the algal biomass. Physiological and phenotypic traits were measured during growth, including vegetation indices, photosynthetic performance, growth, and nitrogen use efficiency (NUE). In addition, the adundances of Bacteria, Archaea and fungi and genes of ammonium oxidizing Bacteria and Archaea were determined in the rhizosphere of differently fertilized plants.Results
Microalgal application at fertilizer levels of 120 and 180 kg N ha–1 showed significantly improved physiological performance, growth, yield and nutrient uptake compared to the unfertilized control. Nevertheless, their yields and NUE were lower than with the application of equal amounts of mineral fertilization, while the adundance of rhizosphere microbes and ammonia-oxidizing microorganisms were not significantly affected.Conclusions
Microalgae from wastewater treatments form a suitable source of organic fertilizer for wheat plants with only moderate reductions in N use efficiency compared to mineral fertilizer. 相似文献3.
da Rocha Ulisses Nunes Andreote Fernando Dini de Azevedo João Lúcio van Elsas Jan Dirk van Overbeek Leo S. 《Journal of Soils and Sediments》2010,10(2):326-339
Purpose
The role of dominant bacterial groups in the plant rhizosphere, e.g., those belonging to the phyla Acidobacteria and Verrucomicrobia, has, so far, not been elucidated, and this is mainly due to the lack of culturable representatives. This study aimed to isolate hitherto-uncultured bacteria from the potato rhizosphere by a combination of cultivation approaches. 相似文献4.
Josef Kohler Brigitte A. Knapp Sebastian Waldhuber Fuensanta Caravaca Antonio Roldán Heribert Insam 《Journal of Soils and Sediments》2010,10(8):1585-1597
Purpose
In this study, we investigated the effects of elevated atmospheric CO2, drought, and inoculation with a plant-growth-promoting rhizobacterium (PGPR) or an arbuscular mycorrhizal (AM) fungus on microbial community composition and functional diversity in the rhizosphere of Lactuca sativa L. cv. Tafalla. 相似文献5.
Edita Mazurová Klára Hilscherová Tereza Šídlová-Štěpánková Heinz-R. Köhler Rita Triebskorn Dirk Jungmann John P. Giesy 《Journal of Soils and Sediments》2010,10(3):423-433
Purpose
The aim of the present study was to investigate possible relationships between the sediment contaminants and the occurrence of intersex in situ. Two of the studied sediments were from polluted sites with increased occurrence of intersex crustaceans (Lake Pilnok, black coal mining area in the Czech Republic, inhabited by the crayfish Pontastacus leptodactylus population with 18% of intersex; creek Lockwitzbach in Germany with Gammarus fossarum population with about 7% of intersex). 相似文献6.
毛乌素沙地南缘臭柏群落土壤水分空间分布特征 总被引:1,自引:0,他引:1
为对臭柏群落土壤水分空间分布特征进行初步研究,以毛乌素南缘神木大保当镇臭柏(Sabina vulgaris Ant.)群落为研究对象,选取10个样地利用环刀进行土壤取样,通过土壤烘干法测出土壤含水量与蓄水量并进行分析。结果表明:(1)在坡位影响下,各样地间的土壤含水量存在显著性差异(P0.05),含水量和蓄水量整体分别表现为沙丘下部沙丘中部丘间低地沙脊,沙丘中部沙丘下部丘间低地沙脊;(2)在坡向影响下,各样地的土壤含水量存在显著性差异(P0.05),含水量和蓄水量均表现为背风坡迎风坡;(3)在林内外植被影响下,各样地的土壤含水量存在显著性差异(P0.05),含水量和蓄水量均表现为草地臭柏沙地。表明臭柏群落对土壤水分空间分布有一定的影响。 相似文献
7.
Biodegradation of pyrene and catabolic genes in contaminated soils cultivated with Lolium multiflorum L 总被引:1,自引:1,他引:0
Sardar Khan Abd El-Latif Hesham Gu Qing Liu Shuang Jizheng He 《Journal of Soils and Sediments》2009,9(5):482-491
Background, aim, and scope
In the soil environment, polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) are of great environmental and human health concerns due to their widespread occurrence, persistence, and carcinogenic properties. Bioremediation of contaminated soil is a cost-effective, environmentally friendly, and publicly acceptable approach to address the removal of environmental contaminants. However, bioremediation of contaminants depends on plant–microbe interactions in the rhizosphere. The microorganisms that can mineralize various PAHs have PAH dioxygenase genes like nahAc, phnAc, and pdo1. To understand the fate of pyrene in rhizospheric and non-rhizospheric soils in the presence or absence of Pb, pyrene biodegradation, bacterial community structure, and dioxygenase genes were investigated in a pot experiment. 相似文献8.
Nils Dittbrenner Yvan Capowiez Heinz-R. K?hler Rita Triebskorn 《Journal of Soils and Sediments》2012,12(2):198-206
Purpose
The earthworm species Eisenia fetida and Eisenia andrei are commonly used in ecotoxicological standard tests. In the present study, we compared the sensitivity of E. fetida with that of two soil-dwelling earthworm species (Aporrectodea caliginosa and Lumbricus terrestris) in order to evaluate the capacity of E. fetida to predict effects of the insecticide imidacloprid. Responses were compared using two endpoints, a biochemical (changes in heat shock protein level (hsp70)) and a behavioural (avoidance behaviour). 相似文献9.
Summary The competitive ability of inoculated and indigenous Rhizobium/Bradyrhizobium spp. to nodulate and fix N2 in grain legumes (Glycine max, Vigna unguiculata, Phaseolus vulgaris) and fodder legumes (Vicia sativa, Medicago sativa, and Trifolium subterraneum) was studied in pots with two local soils collected from two different fields on the basis of cropping history. The native population was estimated by a most-probable-number plant infectivity test in growth pouches and culture tubes. The indigenous rhizobial/bradyrhizobial population ranged from 3 to 2×104 and 0 to 4.4×103 cells g-1 in the two soils (the first with, the second without a history of legume cropping). Inoculated G. max, P. vulgaris, and T. subterraneum plants had significantly more nodules with a greater nodule mass than uninoculated plants, but N2 fixation was increased only in G. max and P. vulgaris. A significant response to inoculation was observed in the grain legume P. vulgaris in the soil not previously used to grow legumes, even in the presence of higher indigenous population (>103 cells g-1 soil of Rhizobium leguminosarum bv phaseoli). No difference in yield was observed with the fodder legumes in response to inoculation, even with the indigenous Rhizobium sp. as low as <14 cells g-1 soil and although the number and weight of nodules were significantly increased by the inoculation in T. subterraneum. Overall recovery of the inoculated strains was 38–100%, as determined by a fluorescent antibody technique. In general, the inoculation increased N2 fixation only in 3 out of 12 legume species-soil combinations in the presence of an indigenous population of rhizobial/bradyrhizobial strains. 相似文献
10.
Julia Seeber G. U. H. Seeber Reinhard Langel Stefan Scheu Erwin Meyer 《Biology and Fertility of Soils》2008,44(5):783-790
The effect of 15N-labelled litter of different quality (Luzula sylvatica, a grass species, Vaccinium gaultheroides, a deciduous dwarf shrub, and Calluna vulgaris, a hardy dwarf shrub) and the presence of macro-decomposers (Lumbricus rubellus, Lumbricidae, and Enantiulus nanus, Diplopoda) on the growth of Dactylis glomerata (Poaceae), a grass species abundant on alpine pastureland, was investigated. After 4 months, the presence of soil animals
significantly increased litter mass loss of L. sylvatica, V. gaultheroides and C. vulgaris by 27%, 11% and 40%, respectively. Soil animals generally reduced microbial biomass but significantly increased it in treatments
where either L. sylvatica or C. vulgaris was present. The presence of soil animals significantly increased shoot and root biomass of D. glomerata by 48% and 64%, respectively. L. rubellus increased the transfer of 15N from the litter into plants. We conclude that macro-decomposers increased nutrient mobilization and plant uptake of nutrients
mineralized from recalcitrant litter materials. Litter of L. sylvatica contributed most to the 15N uptake by D. glomerata, suggesting that litter quality is crucial for the cycling of nutrients on abandoned alpine pastureland. 相似文献
11.
Trang T. Huynh Hao Zhang W. Scott Laidlaw Balwant Singh Alan J. M. Baker 《Journal of Soils and Sediments》2010,10(6):1131-1141
Purpose
This study investigated the effects of plants on the available pools of heavy metals and their re-supply potential in contaminated substrates in a short-term experiment using five metal-accumulating willow and poplar species/cultivars and in a longer-term experiment for Salix x reichardtii. 相似文献12.
Effects of bacteria on metal bioavailability,speciation, and mobility in different metal mine soils: a column study 总被引:1,自引:0,他引:1
Purpose
Successful phytoremediation depends mainly on the bioavailability of heavy metals in the soil. Recently, soil microbes possess several mechanisms that are able to change metal bioavailability in the soil, which provides a new strategy for investigating biogeochemical cycling of metals in contaminated soils. Three metal mines soils with elevated concentrations of Cd, Pb, and Zn from China were applied in this column study to (1) evaluate the effects of metal tolerant bacterial inoculation (Burkholderia cepacia, accession number: AB051408) on metal release, (2) monitor the migration of metals in the rhizospheric horizon (0–20 cm), and (3) investigate metal speciation and sequential fractions in soil. 相似文献13.
Yuanwen Kuang Fangfang Sun Dazhi Wen Zhihong Xu Longbin Huang Jiong Li 《Journal of Soils and Sediments》2011,11(4):589-595
Purpose
Atmospheric nitrogen (N) deposition remains globally and regionally a significant N source in forest ecosystems, with intensive industrial activities. Stable N isotope ratio (δ15N) is a useful indicator widely adopted to assess environmental and ecological impacts of anthropogenic N inputs. On the basis of temporal changes in tree ring δ15N established recently, the present study investigated the influence of N deposition on δ15N in needles of Masson pine (Pinus massoniana L.) and forest soil along an urban–rural gradient in the Pearl River Delta of south China. 相似文献14.
Nils Dittbrenner Hannah Schmitt Yvan Capowiez Rita Triebskorn 《Journal of Soils and Sediments》2011,11(6):1000-1010
Purpose
The use of only one or a few species—representing an entire taxon—in ecotoxicological standard tests poses risk of underestimating the impact of toxicants on the environment. In earthworm ecotoxicity tests, the species Eisenia fetida or Eisenia andrei are commonly used, and there is evidence that these species respond relatively insensitive towards environmental pollution. With the present study, we wanted to evaluate the risk of underestimating effects of the insecticide imidacloprid in soil organisms by comparing E. fetida with two other earthworm species (Aporrectodea caliginosa and Lumbricus terrestris) regarding their sensitivities towards soil contaminated with this widely used insecticide. 相似文献15.
Qiu-Fang Zhang Jing-Jing Peng Qian Chen Xiao-Fang Li Chun-Yan Xu Hong-Bing Yin Shen Yu 《Journal of Soils and Sediments》2011,11(6):1020-1031
Purpose
Spartina alterniflora widely invades coastal wetland in China and might change nitrification in sediment. Both ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) are involved in nitrification in this environment. The objective of this study was to examine the effect of S. alterniflora invasion on abundance and composition of AOA and AOB. 相似文献16.
Britta Eklund Maria Elfström Irene Gallego Bengt-Erik Bengtsson Magnus Breitholtz 《Journal of Soils and Sediments》2010,10(1):127-141
Purpose
The main objective of the current study was to assess the impact of pleasure boat activities on harbour sediment quality in the Stockholm area. Sediment contamination is a growing ecological issue, and there is consequently a need to use sediment bioassays in combination with chemical analysis to determine the impact on the ecosystem. To generate sediment toxicity data relevant for the Baltic Sea, a secondary objective was to further develop and evaluate two well-established bioassays for saltwater, with the macroalga Ceramium tenuicorne and the crustacean Nitocra spinipes, to be useful also for toxicity testing of whole sediment. A major concern has been to minimize any manipulation of the sediments. A third objective was to assess whether a simple leaching procedure could be used to simulate sediment toxicity by comparing results from whole sediment and leachate tests. 相似文献17.
Huayong Wu Daihua Jiang Peng Cai Xingmin Rong Ke Dai Wei Liang Qiaoyun Huang 《Journal of Soils and Sediments》2012,12(2):143-149
Purpose
Attachment of bacteria on soil particles is ubiquitous and governs the transformation of nutrients and degradation of pollutants in soil and associated environments. The nature on the binding of bacteria by soil particles has remained unclear. The objectives of the present study were to investigate the adsorption of Pseudomonas putida on particle size fractions from an Ultisol as influenced by solution chemistry and organic matter. 相似文献18.
Tineke Slootweg Michel Alvinerie Philipp Egeler Daniel Gilberg Jussi V. K. Kukkonen Jörg Oehlmann Carsten Prasse Arto J. Sormunen Markus Liebig 《Journal of Soils and Sediments》2010,10(8):1611-1622
Purpose
Although ivermectin is a widely used lipophilic parasiticide, data on its potential bioaccumulation in aquatic invertebrates are scarce. In this study, bioaccumulation patterns of radiolabeled 3H-ivermectin from sediments into tissues of the sediment-dwelling worm Lumbriculus variegatus were investigated and assessed. 相似文献19.
Maria Gracia Bagur-González Carmen Estepa-Molina Francisco Martín-Peinado Salvador Morales-Ruano 《Journal of Soils and Sediments》2011,11(2):281-289
Purpose
We used the different soluble-in-water concentrations of As, Cu, Mn, Pb and Zn from contaminated soils in an abandoned mining area (anthropogenic origin) to assess the phytotoxicity of the abandoned site using the results obtained with a Lactuca sativa L. bioassay. 相似文献20.
Spatial distribution of sediments and transfer properties in soils in a stormwater infiltration basin 总被引:3,自引:2,他引:1
Patrice Cannavo Laure Vidal-Beaudet Béatrice Béchet Laurent Lassabatère Sylvain Charpentier 《Journal of Soils and Sediments》2010,10(8):1499-1509