Institution
University of Guelph
Education•Guelph, Ontario, Canada•
About: University of Guelph is a education organization based out in Guelph, Ontario, Canada. It is known for research contribution in the topics: Population & Gene. The organization has 26542 authors who have published 50553 publications receiving 1715255 citations. The organization is also known as: U of G & Guelph University.
Topics: Population, Gene, Context (language use), Poison control, Soil water
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the authors investigate tourists' motivations for using Airbnb and find that the majority of tourists use the service for short-term stays. But they do not consider the long-term use of the service.
Abstract: Airbnb has grown very rapidly over the past several years, with millions of tourists having used the service. The purpose of this study was to investigate tourists’ motivations for using Airbnb and...
501 citations
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TL;DR: A systematic evaluation of 3M and fluorotelomer-based AFFFs, commercial products, and AFFF-impacted groundwaters from 15 U.S. military bases was conducted to identify the remaining PFASs, finding 57 classes of novel anionic, zwitterionic, and cationic PFAss, most of which derive from electrochemical fluorination processes.
Abstract: Aqueous film-forming foams (AFFFs), containing per- and polyfluoroalkyl substances (PFASs), are released into the environment during response to fire-related emergencies. Repeated historical applications of AFFF at military sites were a result of fire-fighter training exercises and equipment testing. Recent data on AFFF-impacted groundwater indicates that ∼25% of the PFASs remain unidentified. In an attempt to close the mass balance, a systematic evaluation of 3M and fluorotelomer-based AFFFs, commercial products, and AFFF-impacted groundwaters from 15 U.S. military bases was conducted to identify the remaining PFASs. Liquid chromatography quadrupole time-of-flight mass spectrometry was used for compound discovery. Nontarget analysis utilized Kendrick mass defect plots and a “nontarget” R script. Suspect screening compared masses with those of previously reported PFASs. Forty classes of novel anionic, zwitterionic, and cationic PFASs were discovered, and an additional 17 previously reported classes were o...
495 citations
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United States Geological Survey1, Wake Forest University2, University of Minnesota3, Utah State University4, Martin Luther University of Halle-Wittenberg5, Utrecht University6, University of Oldenburg7, University of Tartu8, University of Washington9, Trinity College, Dublin10, Imperial College London11, University of Wisconsin-Madison12, University of Colorado Boulder13, United States Department of Agriculture14, Queensland University of Technology15, University of Maryland, College Park16, University of Oxford17, University of Nebraska–Lincoln18, University of Guelph19, La Trobe University20, Commonwealth Scientific and Industrial Research Organisation21, Colorado State University22
TL;DR: It is found that an integrative model has substantially higher explanatory power than traditional bivariate analyses and several surprising findings that conflict with classical models are revealed.
Abstract: How ecosystem productivity and species richness are interrelated is one of the most debated subjects in the history of ecology. Decades of intensive study have yet to discern the actual mechanisms behind observed global patterns. Here, by integrating the predictions from multiple theories into a single model and using data from 1,126 grassland plots spanning five continents, we detect the clear signals of numerous underlying mechanisms linking productivity and richness. We find that an integrative model has substantially higher explanatory power than traditional bivariate analyses. In addition, the specific results unveil several surprising findings that conflict with classical models. These include the isolation of a strong and consistent enhancement of productivity by richness, an effect in striking contrast with superficial data patterns. Also revealed is a consistent importance of competition across the full range of productivity values, in direct conflict with some (but not all) proposed models. The promotion of local richness by macroecological gradients in climatic favourability, generally seen as a competing hypothesis, is also found to be important in our analysis. The results demonstrate that an integrative modelling approach leads to a major advance in our ability to discern the underlying processes operating in ecological systems.
494 citations
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TL;DR: The impact of Bt corn pollen from current commercial hybrids on monarch butterfly populations is negligible, according to a 2-year study by scientists in several states and in Canada.
Abstract: A collaborative research effort by scientists in several states and in Canada has produced information to develop a formal risk assessment of the impact of Bt corn on monarch butterfly (Danaus plexippus) populations. Information was sought on the acute toxic effects of Bt corn pollen and the degree to which monarch larvae would be exposed to toxic amounts of Bt pollen on its host plant, the common milkweed, Asclepias syriaca, found in and around cornfields. Expression of Cry proteins, the active toxicant found in Bt corn tissues, differed among hybrids, and especially so in the concentrations found in pollen of different events. In most commercial hybrids, Bt expression in pollen is low, and laboratory and field studies show no acute toxic effects at any pollen density that would be encountered in the field. Other factors mitigating exposure of larvae include the variable and limited overlap between pollen shed and larval activity periods, the fact that only a portion of the monarch population utilizes milkweed stands in and near cornfields, and the current adoption rate of Bt corn at 19% of North American corn-growing areas. This 2-year study suggests that the impact of Bt corn pollen from current commercial hybrids on monarch butterfly populations is negligible.
493 citations
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TL;DR: The retranslocation of B has a profound effect on the expression of B deficiency and toxicity symptoms, and the approaches needed to diagnose and correct B imbalances, are discussed.
Abstract: In the majority of plant species, B distribution between plant organs and the symptoms of B deficiency and toxicity indicate that B has restricted mobility. Nevertheless, B is present in phloem and is retranslocated in phloem, often in sufficient amounts to satisfy the demands of developing sink regions that do not readily transpire. In species that produce significant amounts of polyols in source leaves, boron is readily translocated as a consequence of the formation of B-polyol complexes. Boron is thus unique among the essential plant nutrients in that it has restricted mobility in many plant species and is freely mobile in others. No other element is known to vary so greatly in mobility. The retranslocation of B has a profound effect on the expression of B deficiency and toxicity symptoms, and the approaches needed to diagnose and correct B imbalances. Examples of the impact of B mobility on B uptake, B diagnosis, B toxicity and the breeding of species for B tolerance, are discussed here and in the relevant chapters of this volume. In the following we provide a summary of current information on the mobility of B in plants and provide insights into the physiological and agronomic consequences of these findings.
491 citations
Authors
Showing all 26778 results
Name | H-index | Papers | Citations |
---|---|---|---|
Dirk Inzé | 149 | 647 | 74468 |
Norbert Perrimon | 138 | 610 | 73505 |
Bobby Samir Acharya | 133 | 1121 | 100545 |
Eduardo Marbán | 129 | 579 | 49586 |
Benoît Roux | 120 | 493 | 62215 |
Fereidoon Shahidi | 119 | 951 | 57796 |
Stephen Safe | 116 | 784 | 60588 |
Mark A. Tarnopolsky | 115 | 644 | 42501 |
Robert C. Haddon | 112 | 577 | 52712 |
Milton H. Saier | 111 | 707 | 54496 |
Hans J. Vogel | 111 | 1260 | 62846 |
Paul D. N. Hebert | 111 | 537 | 66288 |
Peter T. Katzmarzyk | 110 | 618 | 56484 |
John Campbell | 107 | 1150 | 56067 |
Linda F. Nazar | 106 | 318 | 52092 |