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, Picea abies
Papers published on a yearly basis
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University of New England (Australia)1, Spanish National Research Council2, National University of Río Negro3, University of Reading4, Plant & Food Research5, Rutgers University6, Commonwealth Scientific and Industrial Research Organisation7, University of Queensland8, Australian Bureau of Agricultural and Resource Economics9, Lund University10, Swedish University of Agricultural Sciences11, University of California, Davis12, Naturalis13, University of Brasília14, University of Lisbon15, National University of Tucumán16, University of Koblenz and Landau17, Federal University of Ceará18, United Nations19, ETH Zurich20, Federal University of Bahia21, University of Giessen22, University of Freiburg23, Wageningen University and Research Centre24, American Museum of Natural History25, Hebrew University of Jerusalem26, University of Bern27, Trinity College, Dublin28, Royal Holloway, University of London29, University of Agriculture, Faisalabad30, Jagiellonian University31, Universidad de las Américas Puebla32
TL;DR: It is shown that non-bee insect pollinators play a significant role in global crop production and respond differently than bees to landscape structure, probably making their crop pollination services more robust to changes in land use.
Abstract: Wild and managed bees are well documented as effective pollinators of global crops of economic importance. However, the contributions by pollinators other than bees have been little explored despite their potential to contribute to crop production and stability in the face of environmental change. Non-bee pollinators include flies, beetles, moths, butterflies, wasps, ants, birds, and bats, among others. Here we focus on non-bee insects and synthesize 39 field studies from five continents that directly measured the crop pollination services provided by non-bees, honey bees, and other bees to compare the relative contributions of these taxa. Non-bees performed 25–50% of the total number of flower visits. Although non-bees were less effective pollinators than bees per flower visit, they made more visits; thus these two factors compensated for each other, resulting in pollination services rendered by non-bees that were similar to those provided by bees. In the subset of studies that measured fruit set, fruit set increased with non-bee insect visits independently of bee visitation rates, indicating that non-bee insects provide a unique benefit that is not provided by bees. We also show that non-bee insects are not as reliant as bees on the presence of remnant natural or seminatural habitat in the surrounding landscape. These results strongly suggest that non-bee insect pollinators play a significant role in global crop production and respond differently than bees to landscape structure, probably making their crop pollination services more robust to changes in land use. Non-bee insects provide a valuable service and provide potential insurance against bee population declines.
620 citations
Macquarie University1, University of Grenoble2, University of Cambridge3, Australian National University4, Royal Botanic Gardens5, University of Waikato6, Wageningen University and Research Centre7, University of Regina8, Smithsonian Tropical Research Institute9, Tohoku University10, Florida International University11, Institut national de la recherche agronomique12, University of Toronto13, VU University Amsterdam14, University of Freiburg15, Max Planck Society16, Kyoto University17, Spanish National Research Council18, Forschungszentrum Jülich19, Columbia University20, Landcare Research21, University of Stirling22, University of Alcalá23, National Dong Hwa University24, Swedish University of Agricultural Sciences25, University of Maryland, College Park26, University of Puerto Rico27, University of Puerto Rico, Río Piedras28
TL;DR: Traits generate trade-offs between performance with competition versus performance without competition, a fundamental ingredient in the classical hypothesis that the coexistence of plant species is enabled via differentiation in their successional strategies.
Abstract: Phenotypic traits and their associated trade-offs have been shown to have globally consistent effects on individual plant physiological functions, but how these effects scale up to influence competition, a key driver of community assembly in terrestrial vegetation, has remained unclear. Here we use growth data from more than 3 million trees in over 140,000 plots across the world to show how three key functional traits--wood density, specific leaf area and maximum height--consistently influence competitive interactions. Fast maximum growth of a species was correlated negatively with its wood density in all biomes, and positively with its specific leaf area in most biomes. Low wood density was also correlated with a low ability to tolerate competition and a low competitive effect on neighbours, while high specific leaf area was correlated with a low competitive effect. Thus, traits generate trade-offs between performance with competition versus performance without competition, a fundamental ingredient in the classical hypothesis that the coexistence of plant species is enabled via differentiation in their successional strategies. Competition within species was stronger than between species, but an increase in trait dissimilarity between species had little influence in weakening competition. No benefit of dissimilarity was detected for specific leaf area or wood density, and only a weak benefit for maximum height. Our trait-based approach to modelling competition makes generalization possible across the forest ecosystems of the world and their highly diverse species composition.
618 citations
University of Coimbra1, University of Brasília2, University of the Basque Country3, University of California, Santa Barbara4, University of Vigo5, Leibniz Association6, Technical University of Berlin7, Swedish University of Agricultural Sciences8, National Scientific and Technical Research Council9, University of Tasmania10, Universidade Federal de Minas Gerais11, University of Toulouse12, Georgia Southern University13, University of Hong Kong14, Universidad San Francisco de Quito15, University of Concepción16, Cornell University17, Polish Academy of Sciences18, University of Tromsø19, Umeå University20, University of Toronto21, University of Yamanashi22, Egerton University23, University of Georgia24, University of Puerto Rico, Río Piedras25, University of Maryland, Baltimore County26, Monash University27, James Cook University28
TL;DR: It is hypothesized that litter quality would increase with latitude (despite variation within regions) and traits would be correlated to produce ‘syndromes’ resulting from phylogeny and environmental variation, and it is found lower litter quality and higher nitrogen:phosphorus ratios in the tropics.
Abstract: Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait variation for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of litter and green leaves to diverge. Here we present the first global-scale assessment of riparian litter quality by determining latitudinal variation (spanning 107°) in litter traits (nutrient concentrations; physical and chemical defences) of 151 species from 24 regions and their relationships with environmental factors and phylogeny. We hypothesized that litter quality would increase with latitude (despite variation within regions) and traits would be correlated to produce ‘syndromes’ resulting from phylogeny and environmental variation. We found lower litter quality and higher nitrogen:phosphorus ratios in the tropics. Traits were linked but showed no phylogenetic signal, suggesting that syndromes were environmentally determined. Poorer litter quality and greater phosphorus limitation towards the equator may restrict detritivore-mediated decomposition, contributing to the predominance of microbial decomposers in tropical streams.
616 citations
TL;DR: In this article, the authors proposed a landscape management perspective for conservation biological control in agroecosystems, where most arthropod species experience their habitat at spatial scales beyond the plot level, and there is spillover of natural enemies across the crop-noncrop interface.
615 citations
TL;DR: The x-ray structure of the FimC-FimH chaperone-adhesin complex from uropathogenic Escherichia coli at 2.5 angstrom resolution reveals the basis for carbohydrate recognition and for pilus assembly.
Abstract: Type 1 pili—adhesive fibers expressed in most members of the Enterobacteriaceae family—mediate binding to mannose receptors on host cells through the FimH adhesin. Pilus biogenesis proceeds by way of the chaperone/usher pathway. The x-ray structure of the FimC-FimH chaperone-adhesin complex from uropathogenic Escherichia coli at 2.5 angstrom resolution reveals the basis for carbohydrate recognition and for pilus assembly. The carboxyl-terminal pilin domain of FimH has an immunoglobulin-like fold, except that the seventh strand is missing, leaving part of the hydrophobic core exposed. A donor strand complementation mechanism in which the chaperone donates a strand to complete the pilin domain explains the basis for both chaperone function and pilus biogenesis.
615 citations
Authors
Showing all 13653 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| 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 |