Results 21 to 30 of about 105,933 (212)
Observations and modelling of birch pollen emission and dispersion from an isolated source [PDF]
, 2014 The occurrence of allergic diseases in western countries increased during the last decades due to greater awareness towards a hygienic lifestyle. The hygiene hypothesis relates the reduced expo- sure to microbial pollution to an underdevelopment of the
Michel, Dominik
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Lateglacial And Early Holocene Environments And Human Occupation In Brandenburg, Eastern Germany
Geography, Environment, Sustainability, 2019 The paper reports on the results of the pollen, plant macrofossil and geochemical analyses and the AMS 14C-based chronology of the «Rüdersdorf» outcrop situated east of Berlin in Brandenburg (Germany).
Franziska Kobe +7 more
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Relationship between botanical origin and antioxidants vitamins of bee-collected pollen
Química Nova, 2009 This study quantified vitamin C, E and β-carotene in samples of fresh bee-collected pollen and correlating them with the botanical origin. Vitamin content varied between 13.5 and 42.5 µg/g for vitamin E; 56.3 and 198.9 µg/g for β-carotene and ...
Karla C. L. S. Oliveira +6 more
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Effects of Alternaria alternata f.sp. lycopersici toxins on pollen [PDF]
, 1988 Effects of the phytotoxic compounds (AAL-toxins) isolated from cell-free culture filtrates of Alternaria alternata f.sp. lycopersici on in vitro pollen development were studied. AAL-toxins inhibited both germination and tube growth of pollen from several
Franken, J. +9 more
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EQA, 2017 The palynological studies are extremely relevant in the investigation of the evolution of palaeoenvironments. A case of pedopalynological studies was applied to the Lateglacial to Holocene sedimentary sequence derived from a small site located in San ...
Marco Marchesini +2 more
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Gelechiidae Moths Are Capable of Chemically Dissolving the Pollen of Their Host Plants [PDF]
, 2011 Background: Many insects feed on pollen surface lipids and contents accessible through the germination pores. Pollen walls, however, are not broken down because they consist of sporopollenin and are highly resistant to physical and enzymatic damage. Here
Li, Yongquan +4 more
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Acta Agrobotanica, 2012 In the investigated material, consisting of 143 honey samples, pollen grains of 109 taxa were identified; 80 were represented by nectariferous plants and 29 by non-nectariferous plants.
Ernest Stawiarz
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Sociobiology, 2017 The knowledge on plant species used for the collection of floral resources is crucial to understanding interactions between plants and bees. The aim of the present study was to identify floral resources used by Centris analis and Centris terminata to ...
Reinanda Lima +6 more
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Frontiers in Ecology and Evolution, 2022 Projected changes in climate are expected to shift the ranges of many tree species poleward and to higher elevations. Here, we examine past changes in forest composition in Pacific Canada using a paleoecological approach and investigate the role of past ...
Terri Lacourse, Matthew A. Adeleye
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Geosciences, 2018 Several episodes of past afforestation were reconstructed in a grassland area of the Yamskaya Steppe site within the “Belgorie„ natural reserve on the Central-Russian Upland.
Yury Chendev +5 more
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