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https://www.readbyqxmd.com/read/28636273/long-term-belowground-effects-of-grassland-management-the-key-role-of-liming
#1
Jemma Heyburn, Paul McKenzie, Michael J Crawley, Dario A Fornara
The functioning of human-managed grassland ecosystems strongly depends on how common management practices will affect grassland 'belowground compartment' including soil biogeochemistry and plant roots. Key questions remain about how animal grazing, liming (e.g. the addition of CaCO3 to soils), and nutrient fertilization might affect, in the long-term, soil nutrient cycling and multiple root traits. Here we focus on a mesotrophic grassland located in Berkshire, UK, where contrasting levels of rabbit grazing, liming and different inorganic fertilizers have been applied since 1991...
June 21, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28634407/analysis-of-survival-and-hatching-transcriptomes-from-potato-cyst-nematodes-globodera-rostochiensis-and-g-pallida
#2
Marc-Olivier Duceppe, Joël Lafond-Lapalme, Juan Emilio Palomares-Rius, Michaël Sabeh, Vivian Blok, Peter Moffett, Benjamin Mimee
Potato cyst nematodes (PCNs), Globodera rostochiensis and G. pallida, cause important economic losses. They are hard to manage because of their ability to remain dormant in soil for many years. Although general knowledge about these plant parasitic nematodes has considerably increased over the past decades, very little is known about molecular events involved in cyst dormancy and hatching, two key steps of their development. Here, we have studied the progression of PCN transcriptomes from dry cysts to hatched juveniles using RNA-Seq...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633079/assessment-of-stormwater-runoff-management-practices-and-bmps-under-soil-sealing-a-study-case-in-a-peri-urban-watershed-of-the-metropolitan-area-of-rome-italy
#3
Fabio Recanatesi, Andrea Petroselli, Maria Nicolina Ripa, Antonio Leone
By 2006, almost 100,000 km(2) of EU soil (2.3% of the whole territory) had been sealed, with a per capita quota of 200 m(2) of sealed surface for each EU citizen. Italy, in 2016, recorded a soil sealing rate of 2.8% of the entire territory. In this context, the urban expansion which occurred in past decades is considered one of the main causes of the increase in flood frequency and intensity in small catchments, causing both social and financial damage. In the present paper, the positive impact of introducing Best Management Practices (BMPs) at urban scale is assessed, with particular regard to the decreasing of flood prone areas...
June 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28628812/modelling-water-and-nutrient-fluxes-in-the-danube-river-basin-with-swat
#4
REVIEW
Anna Malagó, Faycal Bouraoui, Olga Vigiak, Bruna Grizzetti, Marco Pastori
This study provides an innovative process-based modelling approach using the SWAT model and shows its application to support the implementation of the European environmental policies in large river basins. The approach involves several pioneering modelling aspects: the inclusion of current management practices; an innovative calibration and validation methodology of streamflow and water quality; a sequential calibration starting from crop yields, followed by streamflow and nutrients; and the use of concentrations instead of loads in the calibration...
June 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28626038/phenology-of-perennial-native-grass-belowground-axillary-buds-in-the-northern-mixed-grass-prairie
#5
Morgan L Russell, Lance T Vermeire, Amy C Ganguli, John R Hendrickson
PREMISE OF THE STUDY: Vegetative reproduction from belowground bud banks is the primary driver of grassland systems. Despite the importance of bud banks, the timing of recruitment and the crucial link between formation and maintenance is unknown. METHODS: We assessed patterns of belowground bud development, dormancy, and mortality associated with three perennial native grasses in the northern Great Plains. Temperature and soil moisture were measured below the soil surface to determine relationships with belowground bud development...
June 16, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28624508/epidemiological-profile-of-cutaneous-larva-migrans-in-travelers-returning-to-france-between-2003-and-2015
#6
Doudou Sow, Ferelaha Soro, Emilie Javelle, Fabrice Simon, Philippe Parola, Philippe Gautret
BACKGROUND: Cutaneous larva migrans (CLM) is caused by the penetration and migration of canine or feline hookworm larvae into the skin, and frequently affects travelers from high-income countries returning from tropical and sub-tropical areas. Unfortunately, this pathology is neglected due to poor understanding among both physicians and travelers. This study describes the profile of cases reported in Marseille, France. PATIENTS AND METHODS: A retrospective study was performed in two specialized hospitals between 2003 and 2015...
June 15, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28623883/no-consistent-effect-of-plant-species-richness-on-resistance-to-simulated-climate-change-for-above-or-below-ground-processes-in-managed-grasslands
#7
Carsten F Dormann, Lars von Riedmatten, Michael Scherer-Lorenzen
BACKGROUND: Species richness affects processes and functions in many ecosystems. Since management of temperate grasslands is directly affecting species composition and richness, it can indirectly govern how systems respond to fluctuations in environmental conditions. Our aim in this study was to investigate whether species richness in managed grasslands can buffer the effects of drought and warming manipulations and hence increase the resistance to climate change. We established 45 plots in three regions across Germany, each with three different management regimes (pasture, meadow and mown pasture)...
June 17, 2017: BMC Ecology
https://www.readbyqxmd.com/read/28623572/nutritional-fe-mn-ni-and-cr-and-growth-responses-of-rice-plant-affected-by-perennial-application-of-two-bio-solids
#8
Seyed Majid Mousavi, Mohammad Ali Bahmanyar, Hemmatollah Pirdashti, Salahedin Moradi
Trace toxic elements often restrict the land application of different bio-solids in agriculture. In order to evaluate the separate influence of the municipal solid waste compost (MSW), sewage sludge (SS) and combined application with inorganic fertilizers (chemical fertilizer (CF)) on nutritional (Fe, Mn, Ni, and Cr) and growth responses of rice plant, a research was conducted on paddy soil from 2013 to 2015. Obtained results showed that SS levels were superior to MSW in most studied traits. The maximum chlorophyll content (46...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28620396/identification-of-a-potential-isr-determinant-from-pseudomonas-aeruginosa-pm12-against-fusarium-wilt-in-tomato
#9
Sabin Fatima, Tehmina Anjum
Biocontrol of plant diseases through induction of systemic resistance is an environmental friendly substitute to chemicals in crop protection measures. Different biotic and abiotic elicitors can trigger the plant for induced resistance. Present study was designed to explore the potential of Pseudomonas aeruginosa PM12 in inducing systemic resistance in tomato against Fusarium wilt. Initially the bioactive compound, responsible for ISR, was separated and identified from extracellular filtrate of P. aeruginosa PM12...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28619628/environmental-background-values-of-trace-elements-in-sediments-from-the-jiaozhou-bay-catchment-qingdao-china
#10
Fangjian Xu, Zhaoqing Liu, Shengqiang Yuan, Xilin Zhang, Zhilei Sun, Feng Xu, Zuzhou Jiang, Anchun Li, Xuebo Yin
Selected trace elements (As, Cr, Zn, Cu, Cd, Co, Pb and Ni) in 76 surface sediment samples collected from the rivers and the intertidal zone of Jiaozhou Bay (JZB) were evaluated to assess their environmental background values in the JZB catchment. Overall, the sediment quality in the area meets the China Marine Sediment Quality criteria. The background values (ranges) of the elements As, Cr, Zn, Cu, Cd, Co, Pb and Ni were, respectively, 8.28 (4.10-12.46), 67.96 (38.40-97.52), 56.80 (16.42-196.51), 19.13 (5...
June 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28616191/towards-the-co-ordination-of-terrestrial-ecosystem-protocols-across-european-research-infrastructures
#11
Les G Firbank, Chiara Bertora, David Blankman, Gemini Delle Vedove, Mark Frenzel, Carlo Grignani, Elli Groner, Miklós Kertész, Eveline J Krab, Giorgio Matteucci, Christina Menta, Carsten W Mueller, Jutta Stadler, William E Kunin
The study of ecosystem processes over multiple scales of space and time is often best achieved using comparable data from multiple sites. Yet, long-term ecological observatories have often developed their own data collection protocols. Here, we address this problem by proposing a set of ecological protocols suitable for widespread adoption by the ecological community. Scientists from the European ecological research community prioritized terrestrial ecosystem parameters that could benefit from a more consistent approach to data collection within the resources available at most long-term ecological observatories...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28615011/lessons-from-implementing-mass-drug-administration-for-soil-transmitted-helminths-among-pre-school-aged-children-during-school-based-deworming-program-at-the-kenyan-coast
#12
Rosemary M Musuva, Elizabeth Matey, Janet Masaku, Gladys Odhiambo, Faith Mwende, Isaac Thuita, Jimmy Kihara, Doris Njomo
BACKGROUND: The 2012 London declaration which committed to "sustaining, expanding and extending drug access programmes to ensure the necessary supply of drugs and other interventions to help control soil-transmitted helminths (STH) by 2020" has seen many countries in Africa roll out mass drug administration (MDA) especially among school age children. In Kenya, however, during the National school-based deworming exercise, pre-school aged children (PSAC) have to access treatment at primary schools as the pre-school teachers are not trained to carry out deworming...
June 14, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28614763/evaluating-the-effect-of-remote-sensing-image-spatial-resolution-on-soil-exchangeable-potassium-prediction-models-in-smallholder-farm-settings
#13
Yiming Xu, Scot E Smith, Sabine Grunwald, Amr Abd-Elrahman, Suhas P Wani
Major end users of Digital Soil Mapping (DSM) such as policy makers and agricultural extension workers are faced with choosing the appropriate remote sensing data. The objective of this research is to analyze the spatial resolution effects of different remote sensing images on soil prediction models in two smallholder farms in Southern India called Kothapally (Telangana State), and Masuti (Karnataka State), and provide empirical guidelines to choose the appropriate remote sensing images in DSM. Bayesian kriging (BK) was utilized to characterize the spatial pattern of exchangeable potassium (Kex) in the topsoil (0-15 cm) at different spatial resolutions by incorporating spectral indices from Landsat 8 (30 m), RapidEye (5 m), and WorldView-2/GeoEye-1/Pleiades-1A images (2 m)...
June 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28614633/differential-sensitivity-of-total-and-active-soil-microbial-communities-to-drought-and-forest-management
#14
F Bastida, I F Torres, M Andrés-Abellán, P Baldrian, R López-Mondéjar, T Větrovský, H H Richnow, R Starke, S Ondoño, C García, F R López-Serrano, N Jehmlich
Climate change will affect semiarid ecosystems through severe droughts that increase the competition for resources in plant and microbial communities. In these habitats, adaptations to climate change may consist of thinning - that reduces competition for resources through a decrease in tree density and the promotion of plant survival. We deciphered the functional and phylogenetic responses of the microbial community to six years of drought induced by rainfall exclusion and how forest management affects its resistance to drought, in a semiarid forest ecosystem dominated by Pinus halepensis Mill...
June 14, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28612608/higher-antioxidant-activity-total-flavonols-and-specific-quercetin-glucosides-in-two-different-onion-allium-cepa-l-varieties-grown-under-organic-production-results-from-a-6-year-field-study
#15
Feiyue Ren, Kim Reilly, Joseph P Kerry, Michael Gaffney, Mohammad Hossain, Dilip K Rai
We carried out a 6-year study to assess the effect of conventional, organic, and mixed cultivation practices on bioactive compounds (flavonoids, anthocyanins) and antioxidant capacity in onion. Total flavonoids, total anthocyanins, individual flavonols, individual anthocyanins, and antioxidant activity were measured in two varieties ('Hyskin' and 'Red Baron') grown in a long-term split-plot factorial systems comparison trial. This is the first report of repeated measurements of bioactive content over an extensive time period in a single crop type within the same trial...
June 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28612389/biochar-potential-in-intensive-cultivation-of-capsicum-anuum-l-sweet-pepper-crop-yield-and-plant-protection
#16
Abhay Kumar, Yigal Elad, Ludmila Tsechansky, Vikas Abrol, Beni Lew, Rivka Offenbach, Ellen R Graber
BACKGROUND: The influence of various biochars on crop yield and disease resistance of Capsicum anuum L. (sweet pepper) under modern, high-input, intensive net house cultivation was tested over the course of 2011 to 2014 in the Arava desert region of Israel. A pot experiment with Lactuca sativa L. (lettuce) grown in the absence of fertilizer employed the 3-year old field trial soils to determine if biochar treatments contributed to soil intrinsic fertility. RESULTS: Biochar amendments resulted in a significant increase in number and weight of pepper fruits over three years...
June 14, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28611817/rational-water-and-nitrogen-management-improves-root-growth-increases-yield-and-maintains-water-use-efficiency-of-cotton-under-mulch-drip-irrigation
#17
Hongzhi Zhang, Aziz Khan, Daniel K Y Tan, Honghai Luo
There is a need to optimize water-nitrogen (N) applications to increase seed cotton yield and water use efficiency (WUE) under a mulch drip irrigation system. This study evaluated the effects of four water regimes [moderate drip irrigation from the third-leaf to the boll-opening stage (W1), deficit drip irrigation from the third-leaf to the flowering stage and sufficient drip irrigation thereafter (W2), pre-sowing and moderate drip irrigation from the third-leaf to the boll-opening stage (W3), pre-sowing and deficit drip irrigation from the third-leaf to the flowering stage and sufficient drip irrigation thereafter (W4)] and N fertilizer at a rate of 520 kg ha(-1) in two dressing ratios [7:3 (N1), 2:8 (N2)] on cotton root morpho-physiological attributes, yield, WUE and the relationship between root distribution and dry matter production...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611807/size-and-reproductive-traits-rather-than-leaf-economic-traits-explain-plant-community-composition-in-species-rich-annual-vegetation-along-a-gradient-of-land-use-intensity
#18
Inga Dirks, Rita Dumbur, Patrick Lienin, Michael Kleyer, José M Grünzweig
Agricultural land use imposes a major disturbance on ecosystems worldwide, thus greatly modifying the taxonomic and functional composition of plant communities. However, mechanisms of community assembly, as assessed by plant functional traits, are not well known for dryland ecosystems under agricultural disturbance. Here we investigated trait responses to disturbance intensity and availability of resources to identify the main drivers of changes in composition of semiarid communities under diverging land use intensities...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611464/relict-high-andean-ecosystems-challenge-our-concepts-of-naturalness-and-human-impact
#19
Steven P Sylvester, Felix Heitkamp, Mitsy D P V Sylvester, Hermann F Jungkunst, Harrie J M Sipman, Johanna M Toivonen, Carlos A Gonzales Inca, Juan C Ospina, Michael Kessler
What would current ecosystems be like without the impact of mankind? This question, which is critical for ecosystem management, has long remained unanswered due to a lack of present-day data from truly undisturbed ecosystems. Using mountaineering techniques, we accessed pristine relict ecosystems in the Peruvian Andes to provide this baseline data and compared it with the surrounding accessible and disturbed landscape. We show that natural ecosystems and human impact in the high Andes are radically different from preconceived ideas...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28609848/geochemical-landscapes-as-drivers-of-trace-and-toxic-element-profiles-in-wild-red-deer-cervus-elaphus
#20
Andrew S French, David Shaw, Stuart W Gibb, Mark A Taggart
Tissue concentrations of essential trace and toxic elements in red deer (Cervus elaphus) are associated with the plants, soil and water they ingest. As such, variation in tissue concentrations is associated with variation in local geochemistry and bioavailability of elements. Physiological factors such as liver fluke (Fasciola hepatica) infection, breeding status, and in-tissue element interactions may also affect tissue concentrations, though their effects in red deer are not well understood. The primary objective of this study was therefore to survey wild red deer liver element concentrations across a range of geographically distinct populations during the Scottish red deer stalking season; and, in so doing, establishes element reference ranges while also exploring geographic and temporal variation and physiological factors...
June 9, 2017: Science of the Total Environment
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