scispace - formally typeset
Search or ask a question
Institution

Swedish University of Agricultural Sciences

EducationUppsala, Sweden
About: Swedish University of Agricultural Sciences is a education organization based out in Uppsala, Sweden. It is known for research contribution in the topics: Population & Soil water. The organization has 13510 authors who have published 35241 publications receiving 1414458 citations. The organization is also known as: Sveriges Lantbruksuniversitet & SLU.


Papers
More filters
Journal ArticleDOI
TL;DR: The S-plot is proposed as a tool for visualization and interpretation of multivariate classification models, e.g., OPLS discriminate analysis, having two or more classes, and an improved visualization and discrimination of interesting metabolites could be demonstrated.
Abstract: Metabolomics studies generate increasingly complex data tables, which are hard to summarize and visualize without appropriate tools The use of chemometrics tools, eg, principal component analysis (PCA), partial least-squares to latent structures (PLS), and orthogonal PLS (OPLS), is therefore of great importance as these include efficient, validated, and robust methods for modeling information-rich chemical and biological data Here the S-plot is proposed as a tool for visualization and interpretation of multivariate classification models, eg, OPLS discriminate analysis, having two or more classes The S-plot visualizes both the covariance and correlation between the metabolites and the modeled class designation Thereby the S-plot helps identifying statistically significant and potentially biochemically significant metabolites, based both on contributions to the model and their reliability An extension of the S-plot, the SUS-plot (shared and unique structure), is applied to compare the outcome of mu

1,080 citations

Journal ArticleDOI
01 May 2019-Nature
TL;DR: A comprehensive assessment of the world’s rivers and their connectivity shows that only 37 per cent of rivers longer than 1,000 kilometres remain free-flowing over their entire length.
Abstract: Free-flowing rivers (FFRs) support diverse, complex and dynamic ecosystems globally, providing important societal and economic services. Infrastructure development threatens the ecosystem processes, biodiversity and services that these rivers support. Here we assess the connectivity status of 12 million kilometres of rivers globally and identify those that remain free-flowing in their entire length. Only 37 per cent of rivers longer than 1,000 kilometres remain free-flowing over their entire length and 23 per cent flow uninterrupted to the ocean. Very long FFRs are largely restricted to remote regions of the Arctic and of the Amazon and Congo basins. In densely populated areas only few very long rivers remain free-flowing, such as the Irrawaddy and Salween. Dams and reservoirs and their up- and downstream propagation of fragmentation and flow regulation are the leading contributors to the loss of river connectivity. By applying a new method to quantify riverine connectivity and map FFRs, we provide a foundation for concerted global and national strategies to maintain or restore them. A comprehensive assessment of the world’s rivers and their connectivity shows that only 37 per cent of rivers longer than 1,000 kilometres remain free-flowing over their entire length.

1,071 citations

Journal ArticleDOI
TL;DR: Interest in the role of litter decomposition in the global carbon cycle has increased recently since (1) increased atmospheric carbon dioxide will probably affect the chemical quality of litter (especially nitrogen content), and (2) global warming may enhance decomposition rates.
Abstract: Litter decomposition is controlled by three main factors: climate, litter quality and the nature and abundance of the decomposing organisms. Climate is the dominant factor in areas subjected to unfavourable weather conditions, whereas litter quality largely prevails as the regulator under favourable conditions. Litter quality remains important until the late decomposition stages through its effects on humus formation. Interest in the role of litter decomposition in the global carbon cycle has increased recently since (1) increased atmospheric carbon dioxide will probably affect the chemical quality of litter (especially nitrogen content), and (2) global warming may enhance decomposition rates.

1,070 citations

Book ChapterDOI
TL;DR: A review on the state of soil visible-near infrared (vis-NIR) spectroscopy is provided in this article, focusing on important soil attributes such as soil organic matter (SOM), minerals, texture, nutrients, water, pH, and heavy metals.
Abstract: This chapter provides a review on the state of soil visible–near infrared (vis–NIR) spectroscopy Our intention is for the review to serve as a source of up-to-date information on the past and current role of vis–NIR spectroscopy in soil science It should also provide critical discussion on issues surrounding the use of vis–NIR for soil analysis and on future directions To this end, we describe the fundamentals of visible and infrared diffuse reflectance spectroscopy and spectroscopic multivariate calibrations A review of the past and current role of vis–NIR spectroscopy in soil analysis is provided, focusing on important soil attributes such as soil organic matter (SOM), minerals, texture, nutrients, water, pH, and heavy metals We then discuss the performance and generalization capacity of vis–NIR calibrations, with particular attention on sample pretratments, covariations in data sets, and mathematical data preprocessing Field analyses and strategies for the practical use of vis–NIR are considered We conclude that the technique is useful to measure soil water and mineral composition and to derive robust calibrations for SOM and clay content Many studies show that we also can predict properties such as pH and nutrients, although their robustness may be questioned For future work we recommend that research should focus on: (i) moving forward with more theoretical calibrations, (ii) better understanding of the complexity of soil and the physical basis for soil reflection, and (iii) applications and the use of spectra for soil mapping and monitoring, and for making inferences about soils quality, fertility and function To do this, research in soil spectroscopy needs to be more collaborative and strategic The development of the Global Soil Spectral Library might be a step in the right direction

1,063 citations

Journal ArticleDOI
TL;DR: It is suggested that changes in species diversity within and across trophic levels can significantly alter decomposition and this happens through various mechanisms that are broadly similar in forest floors and streams.
Abstract: Over 100 gigatons of terrestrial plant biomass are produced globally each year. Ninety percent of this biomass escapes herbivory and enters the dead organic matter pool, thus supporting complex detritus-based food webs that determine the critical balance between carbon mineralization and sequestration. How will changes in biodiversity affect this vital component of ecosystem functioning? Based on our analysis of concepts and experiments of leaf decomposition in forest floors and streams, we suggest that changes in species diversity within and across trophic levels can significantly alter decomposition. This happens through various mechanisms that are broadly similar in forest floors and streams. Differences in diversity effects between these systems relate to divergent habitat conditions and evolutionary trajectories of aquatic and terrestrial decomposers.

1,027 citations


Authors

Showing all 13653 results

NameH-indexPapersCitations
Svante Pääbo14740784489
Lars Klareskog13169763281
Stephen Hillier129113883831
Carol V. Robinson12367051896
Jun Yu121117481186
Peter J. Anderson12096663635
David E. Clapham11938258360
Angela M. Gronenborn11356844800
David A. Wardle11040970547
Agneta Oskarsson10676640524
Jack S. Remington10348138006
Hans Ellegren10234939437
Per A. Peterson10235635788
Malcolm J. Bennett9943937207
Gunnar E. Carlsson9846632638
Network Information
Related Institutions (5)
Institut national de la recherche agronomique
68.3K papers, 3.2M citations

92% related

Wageningen University and Research Centre
54.8K papers, 2.6M citations

92% related

University of Guelph
50.5K papers, 1.7M citations

88% related

United States Forest Service
21.8K papers, 959.1K citations

87% related

Agriculture and Agri-Food Canada
21.3K papers, 748.1K citations

87% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023116
2022252
20212,311
20201,957
20191,787
20181,624