Institution
Swedish University of Agricultural Sciences
Education•Uppsala, 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.
Topics: Population, Soil water, Species richness, Biodiversity, Gene
Papers published on a yearly basis
Papers
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TL;DR: This chapter describes the ergosterol analysis as a means of quantifying mycorrhizal biomass, and evaluates the methods—namely, sensitivity and replicability, variation in ergosterols levels within the same species, and applications in my Corrhiza research.
Abstract: Publisher Summary This chapter describes the ergosterol analysis as a means of quantifying mycorrhizal biomass. A fundamental problem concerns the concept of fungal biomass: while the chitin content may be assumed to be roughly proportional to the total amount of cell wall, the amount of cell wall is certainly not proportional to the amount of cytoplasm, which is normally concentrated at the tips, leaving the bulk of the hyphae highly vacuolated. Another fungus-specific compound, ergosterol, is a principal component of membranes, and should therefore provide a better correlation with the metabolically active biomass of a fungus. The chapter briefly discusses development and current procedure technique. The chapter also evaluates the methods—namely, sensitivity and replicability, variation in ergosterol levels within the same species, and applications in mycorrhiza research. The basic shortcomings of the method are those of variation in the ergosterol content depending on growing conditions, and interspecies variation.
257 citations
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TL;DR: Recent progress has unraveled the molecular mechanisms of the spidroin N- and C-terminal nonrepetitive domains (NTs and CTs) and revealed the pH and ion gradients in spiders' silk glands, clarifying how spIDroin solubility is maintained and how silk is formed in a fraction of a second.
Abstract: Spider silk is strong and extensible but still biodegradable and well tolerated when implanted, making it the ultimate biomaterial. Shortcomings that arise in replicating spider silk are due to the use of recombinant spider silk proteins (spidroins) that lack native domains, the use of denaturing conditions under purification and spinning and the fact that the understanding of how spiders control silk formation is incomplete. Recent progress has unraveled the molecular mechanisms of the spidroin N- and C-terminal nonrepetitive domains (NTs and CTs) and revealed the pH and ion gradients in spiders' silk glands, clarifying how spidroin solubility is maintained and how silk is formed in a fraction of a second. Protons and CO2, generated by carbonic anhydrase, affect the stability and structures of the NT and CT in different ways. These insights should allow the design of conditions and devices for the spinning of recombinant spidroins into native-like silk.
257 citations
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TL;DR: The results show that the major causes of observed changes in decomposition rate after nitrogen fertilisation are increases in decomposer efficiency, more rapid formation of recalcitrant material, and, although less pronounced, decreased growth rate of decomposers.
Abstract: It has been long recognised that mineral elements, and nitrogen in particular, play an important role in determining the rate at which organic matter is decomposed. The magnitude and even the sign of the effects are, however, not universal and the underlying mechanisms are not well understood. In this paper, an explanation for the observed decreases in decomposition/CO2 evolution rates when inorganic nitrogen increases is proposed by combining a theoretical approach with the results of a 6-year litter decomposition-forest nitrogen fertilisation experiment. Our results show that the major causes of observed changes in decomposition rate after nitrogen fertilisation are increases in decomposer efficiency, more rapid formation of recalcitrant material, and, although less pronounced, decreased growth rate of decomposers. This gives a more precise description of how inorganic nitrogen modifies decomposition rates than the previously loosely used "decrease in microbial activity". The long-term consequences for soil carbon storage differ widely depending on which factor is changed; stores are much more sensitive to changes in decomposer efficiency and/or rate of formation of recalcitrant material than to changes in decomposer growth rate.
257 citations
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01 Jan 1992TL;DR: In this article, the question of maintaining biological diversity in the boreal forests of Fennoscandia, i.e. the Scandinavian Peninsula and Finland, is addressed. Andersson et al., 1987; Ahlen & Tjernberg, 1988; Databanken for hotarer och Naturvardsverket, 1991.
Abstract: This chapter deals with the question of maintaining biological diversity in the boreal forests of Fennoscandia, i.e. the Scandinavian Peninsula and Finland. The boreal coniferous forest, or taiga, is the dominant biome, with a latitudinal extension from 56°N to 69°N (Fig. 7.1). The total area of the Fennoscandian forest amounts to more than 50 million ha, of which 13% occurs in Norway, 40% in Finland and 47% in Sweden (Nordic Statistical Secretariat, 1990). Man has utilized the boreal forest, for various purposes, during a very long period of time (Tenow, 1974). However, the most intense utilization has occurred during the last 300 years in connection with the development of the forest industry. At present, Fennoscandian forestry is amongst the most mechanized and efficient in the world. The result is that almost all forest land is now used for production of saw-timber and wood pulp. This has a tremendous impact on the structure and function of the boreal ecosystem. Cutting of old-growth forest and other consequences of forestry have a destructive impact on a large number of boreal organisms, despite the fact that some species are favoured by forest management. The result is decreasing populations for many hundreds of plants and animals, as reflected in recent Red Data lists (Andersson et al., 1987; Ahlen & Tjernberg, 1988; Databanken for hotarer och Naturvardsverket, 1991).
257 citations
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University of Duisburg-Essen1, Slovak Academy of Sciences2, University of Minho3, University of Pécs4, Leibniz Association5, Hong Kong Environmental Protection Department6, University of Savoy7, Swedish University of Agricultural Sciences8, Naturhistorisches Museum9, University of Bergen10, University of Porto11, Naturalis12, University of Salzburg13, University of Natural Resources and Life Sciences, Vienna14, Bielefeld University15, Ilia State University16, Babeș-Bolyai University17, Ankara University18, National Institute of Oceanography, India19, University of Montenegro20, American Museum of Natural History21, Norwegian University of Science and Technology22
TL;DR: This work analysed gaps in the two most important reference databases, Barcode of Life Data Systems (BOLD) and NCBI GenBank, with a focus on the taxa most frequently used in WFD and MSFD, and found that coverage varies strongly among taxonomic groups, and among geographic regions.
257 citations
Authors
Showing all 13653 results
Name | H-index | Papers | Citations |
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Svante Pääbo | 147 | 407 | 84489 |
Lars Klareskog | 131 | 697 | 63281 |
Stephen Hillier | 129 | 1138 | 83831 |
Carol V. Robinson | 123 | 670 | 51896 |
Jun Yu | 121 | 1174 | 81186 |
Peter J. Anderson | 120 | 966 | 63635 |
David E. Clapham | 119 | 382 | 58360 |
Angela M. Gronenborn | 113 | 568 | 44800 |
David A. Wardle | 110 | 409 | 70547 |
Agneta Oskarsson | 106 | 766 | 40524 |
Jack S. Remington | 103 | 481 | 38006 |
Hans Ellegren | 102 | 349 | 39437 |
Per A. Peterson | 102 | 356 | 35788 |
Malcolm J. Bennett | 99 | 439 | 37207 |
Gunnar E. Carlsson | 98 | 466 | 32638 |