In particular, found that the particulate organic matter fraction undecomposed plant litter was significantly higher when soils were under an optimized system which was highly correlated with crop yields. Documents Year Value Non-citable documents 2007 0 Non-citable documents 2008 0 Non-citable documents 2009 0 Non-citable documents 2010 1 Non-citable documents 2011 2 Non-citable documents 2012 3 Non-citable documents 2013 4 Non-citable documents 2014 5 Non-citable documents 2015 4 Non-citable documents 2016 4 Non-citable documents 2017 5 Citable documents 2007 0 Citable documents 2008 81 Citable documents 2009 152 Citable documents 2010 210 Citable documents 2011 185 Citable documents 2012 181 Citable documents 2013 224 Citable documents 2014 267 Citable documents 2015 335 Citable documents 2016 316 Citable documents 2017 329 Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. There is little horizonation in the top 1 m of soil. Frontiers covers all aspects of ecology, the environment, and related subjects, focusing on , broadly impacting , cross-disciplinary or multi-country endeavors, new techniques and technologies, new approaches to old problems, and practical applications of ecological science. When submitting a manuscript to Frontiers in Environmental Science, authors must submit the material directly to one of the specialty sections. This is strong evidence that these fluctuations are not caused by diurnal temperature changes, which typically exhibit a depth-wise phase shift in a sinusoidal plot with time series on the x and temperature on the y-axis. The texture of the soil is over 95% sand.
Statistics Statistical analysis for biomass and panicle production were performed in R. The author selection is based on article impact analytics of original research published in the Frontiers specialty journals and sections. The Sahel is a transitional climate zone between the arid Sahara desert in the North and the Savannah to the South, where one-third of the 20. In 2003 the crop only subplots had shrubs removed manually, which included digging out major roots, and over the course of the experiment received only crop residues as biomass input. Freshwater Science welcomes submissions of the following : Correction, Data Report, Editorial, Hypothesis and Theory, Methods, Mini Review, Opinion, Original Research, Perspective, Policy and Practice Reviews, Policy Brief, Protocols, Review, Systematic Review and Technology Report. The fluctuations in water potential are synchronized and there is no time lag of the daily maximum and minimum water potential with depth Figure. This crust layer was not reported in previous studies at the site ; ;.
With content that is timely, interesting, and accessible, even to those reading outside their own area of expertise, it has a broad, interdisciplinary appeal and is relevant to all users of ecological science, including policy makers, resource managers, and educators. Results and Discussion Millet was grown with fully sufficient levels of water for plant growth until early flowering and then water was withheld for 41 days until harvest. Frontiers in Environmental Science is a member of the Committee on Publication Ethics. Soil moisture measurements were taken just prior to turning on irrigation every 1—3 days. Third, quantity of water used during grain filling is extremely important to grain yields.
The results are based on the 2016 Journal Citation Reports, released in 2017 by Clarivate Analytics. Cites Year Value External Cites per document 2007 0 External Cites per document 2008 0. Additionally, pearl millet yields along a transect in Senegal show 800 mm of annual precipitation as a threshold below which yields begin to decline Figure In the presence of shrubs in this study, however, millet continued to grow and was more productive than millet grown alone, and the mean annual rainfall at the site is 450 mm. Biomass yields obtained in this study were higher than those obtained during the rainy season, particularly for the crop only subplots, though the yields vary widely from season to season. All shrubs used for the tracer study were the oldest shrubs within the crop+shrub subplots with extensive root systems, present before the addition of new shrubs in 2003.
The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address. Mean annual precipitation for the same time period is indicated by color. In November 2016 a paper linking was retracted from a Frontiers journal. Data Availability Statement The data in Figures — are either the output from the raw data in this manuscript will be made available in a timely manner to any qualified researcher who requests it. Previously, our team documented benefits to soils and food production when crops are inter-planted with the native woody shrub, G.
All manuscripts must be submitted directly to the section Freshwater Science, where they are peer-reviewed by the Associate and Review Editors of the specialty section. This is an open-access article distributed under the terms of the. From May 24 to 28 sampling of shrub and millet biomass at the above plot locations was done at 8-24 h intervals with shorter intervals in the first 3 days of the tracer study. Frontiers in Plant Sciences With an Impact Factor of 4. Scholars from all relevant academic fields are invited to submit high-quality manuscripts that describe the latest, state-of-the-art research results or innovations.
If you are an administrator for Frontiers in Environmental Science, please to find out how you can verify the contributions of your editorial board members. The specialty section of Freshwater Science under Frontiers in Environmental Science aims to fill this niche. In 2017, further editors were removed, allegedly for their rejection rate being high. The purpose is to have a forum in which general doubts about the processes of publication in the journal, experiences and other issues derived from the publication of papers are resolved. Top reviewers on Publons Manuscripts reviewed in last 12 months. Conclusion Feeding the large and rapidly growing populations in the socioeconomically and environmentally precarious region of the Sahel is a major challenge.
However, it is increasingly evident from recent global analyses that past approaches to water resource management have failed to address the threats to rivers and wetlands from human activities, and that the situation will worsen as demands for water, food and energy rise. The stripped stems were placed in a glass vial with a polycone cap, sealed, and wrapped with parafilm. Soil moisture measured at three distances from the closest shrub remained stable until mid-May, when the near-shrub moisture began a steep decline of ~10 mm over the course of a week Figure. In crop+shrub subplot A and B above-background δ 2H was observed in millet with peak δ 2H values at 36 and 84 h after tracer application, respectively. Additionally, the shrub density in this irrigation and tracer study was ~7 times as high as the native density in the field studied by , so the shrub water uptake was likely higher in this study which could diminish any shrub-mediated increases to profile moisture content due to infiltration or hydraulic redistribution. Subplots measuring 10 x 6 m normally cultivated at the site were split to 5 m x 6 m and had drip irrigation installed.
All of this is only possible with a and the diligent and committed work of our Associate and Review Editors, and the dedication of the Frontiers Journal Development Teams. Gray shading represents night time hours. However, further in-depth research is needed to understand how such small amounts of hydraulically lifted water can be so efficiently transferred from shrubs to crops. Andrea Carminati of Georg-August Universitat, Gottingen provided valuable feedback on drafts of this manuscript. In crop+shrub subplot C, above background δ 2H was first observed 36 h after 2H tracer application in millet, which was also the time at which it reached its maximum value.