Results 11 to 20 of about 1,211,577 (349)
Positive but variable effects of crop diversification on biodiversity and ecosystem services
Global Change Biology, 2021 Ecological theory suggests that biodiversity has a positive and stabilizing effect on the delivery of ecosystem services. Yet, the impacts of increasing the diversity of cultivated crop species or varieties in agroecosystems are still under scrutiny. The
D. Beillouin +4 more
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Key innovations and the diversification of Hymenoptera
Nature Communications, 2023 Hymenoptera is an incredibly diverse order, with numerous behavioral and morphological innovations. Here, the authors compile a time-calibrated Hymenoptera phylogeny and find that secondary transitions to phytophagy, plant feeding, are associated with ...
Bonnie B. Blaimer +10 more
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Social Science Research Network, 2022 This study introduces a new measure of energy diversification. We explore it's impact on economic development across the panels of low-income, high-income, European Union (EU), the Organization for Economic Co-operation and Development (OECD), and G20 ...
Giray Gozgor, S. Paramati
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Agricultural diversification promotes multiple ecosystem services without compromising yield
Science Advances, 2020 Diversification practices benefit biodiversity, pollination, pest control, nutrient cycling, soil fertility, and water regulation. Enhancing biodiversity in cropping systems is suggested to promote ecosystem services, thereby reducing dependency on ...
Giovanni Tamburini +6 more
semanticscholar +1 more source
Does Diversification Cause the 'Diversification Discount'? [PDF]
SSRN Electronic Journal, 2000 This paper examines whether the discount of diversified firms can actually be attributed to diversification itself, using recent econometric developments about causal inference with non-experimental data. The effect of diversification on firm value is unbiasedly estimated by matching diversified and single-segment firms on the propensity score??the ...
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Herbivory increases diversification across insect clades. [PDF]
, 2015 Insects contain more than half of all living species, but the causes of their remarkable diversity remain poorly understood. Many authors have suggested that herbivory has accelerated diversification in many insect clades. However, others have questioned
Lapoint, Richard +2 more
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Extant timetrees are consistent with a myriad of diversification histories
Nature, 2020 Time-calibrated phylogenies of extant species (referred to here as ‘extant timetrees’) are widely used for estimating diversification dynamics1. However, there has been considerable debate surrounding the reliability of these inferences2–5 and, to date ...
Stilianos Louca, Matthew W. Pennell
semanticscholar +1 more source
Comptes Rendus. Physique, 2019 As financial instruments grow in complexity, more and more information is neglected by risk optimization practices. This brings down a curtain of opacity on the origination of risk, which has been one of the main culprits in the 2007–2008 global financial crisis.
Bardoscia, Marco +3 more
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Blackleg (Leptosphaeria maculans) Severity and Yield Loss in Canola in Alberta, Canada
Plants, 2016 Blackleg, caused by Leptosphaeria maculans, is an important disease of oilseed rape (Brassica napus L.) in Canada and throughout the world. Severe epidemics of blackleg can result in significant yield losses.
Sheau-Fang Hwang +5 more
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Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1996 Trois lots de 14 brebis Djallonké ont été comparés : l'un (lot E) avec un traitement antiparasitaire à la mise bas avec de l'Ivomec® ou du Valbazen® et de l'Amprol®, l'autre (lot T2) avec trois traitements antiparasitaires classiques avec les mêmes ...
Sylvie Hounzangbe-Adote, Christian Meyer
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