Results 11 to 20 of about 248,109 (208)
Identifying Urban Sources as Cause of Elevated Grass Pollen Concentrations using GIS and Remote Sensing [PDF]
, 2013 We examine here the hypothesis that during flowering, the grass pollen concentrations at a specific site reflect the distribution of grass pollen sources within a few kilometres of this site.We perform this analysis on data from a measurement campaign in
Becker, T. +10 more
core +4 more sources
Características palinológicas y fisicoquímicas de tres tipos de mieles uniflorales del centro de Argentina [PDF]
, 2006 Se estudiaron las características de 59 mieles monoflorales de Condalia microphylla Cav. (“piquillín”), Centaurea solstitialis L. (“abrepuño amarillo”) y Prosopis spp., provenientes de La Pampa, Argentina. Se determinaron caracteres polínicos (abundancia
Naab, O.A. +2 more
core +2 more sources
Subfossil pollen spectra as evidence of the altitudinal zonation of the Southern Sikhote-Alin [PDF]
Геосистемы переходных зон, 2022 The correspondence of pollen spectra from surface soil samples from the Olkhovaya Mountain (height 1669 m) to vertical belt vegetation (coniferous-broadleaved forests, spruce-fir forests and golets belt) was analyzed. Attention is paid to the analysis of
Ludmila M. Mokhova +1 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Analysis of prehistoric brown earth paleosols under the podzol soils of Exmoor, UK [PDF]
, 2020 The deforestation of the upland landscapes in southwest Britain during prehistory is an established archaeological narrative, documenting human impacts on the environment and questioning the relationship of prehistoric societies to the upland landscapes ...
Bray, Lee +6 more
core +3 more sources
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
doaj +1 more source
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
doaj +1 more source