Results 31 to 40 of about 83,600 (300)

Replicability of data collected for empirical estimation of relative pollen productivity [PDF]

open access: yes, 2016
The effects of repeated survey and fieldwork timing on data derived from a recently proposed standard field methodology for empirical estimation of relative pollen productivity (RPP) have been tested.
Bunting, M. Jane   +2 more
core   +2 more sources

Ionizing radiation mediated cytological manifestation in microsporogenesis of Brassica campestris L.(Brassicaceae) [PDF]

open access: yesJournal of Central European Agriculture, 2012
Purpose of the present work is to investigate the mutagenic effects of ionizing radiations (gamma rays) on Brassica campestris L. accession no - IC363713. Homogeneous seeds of Brassica were irradiated at four doses of gamma rays i.e.
Girjesh KUMAR, Kshama Dwivedi
doaj   +1 more source

Phytosociological and ecological discrimination of Mediterranean cypress ('Cupressus sempervirens') communities in Crete (Greece) by means of pollen analysis

open access: yesMediterranean Botany, 2019
Sixty modern surface samples collected from mosses in different cypress forest communities (Cupressus sempervirens L.) on the island of Crete (Greece) were analysed for their pollen content.
José Antonio López-Sáez   +5 more
doaj   +1 more source

Sedimentary Environmental Evolution of the Western Taiwan Shoal Area since the Late Pleistocene

open access: yesJournal of Marine Science and Engineering, 2021
A new pollen analysis and major and trace element contents were conducted on a 40 m long gravity core recovered from the Taiwan Shoal (sand ridges), south of the Taiwan Strait, beginning in the Late Pleistocene.
Chipeng He   +7 more
doaj   +1 more source

The influence of weather conditions on the course of pollen seasons of alder (Alnus spp.), hazel (Corylus spp.) and birch (Betula spp.) in Lublin (2001-2006)

open access: yesActa Agrobotanica, 2012
The start and rate of florescence of Alnus, Corylus and Betula are dependent on meteorological conditions. In the present paper we have analysed the effect of mean, maximum and minimum temperature, relative air humidity and precipitation on the onset of ...
Agnieszka Dąbrowska
doaj   +1 more source

Automatic pollen recognition with the Rapid-E particle counter: the first-level procedure, experience and next steps [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Pollen-induced allergies are among the most prevalent non-contagious diseases, with about a quarter of the European population being sensitive to various atmospheric bioaerosols.
I. Šaulienė   +12 more
doaj   +1 more source

Pollen sources in the Bojanów forest complex identified on honeybee pollen load by microscopic analysis

open access: yesActa Agrobotanica, 2017
The aim of this study was to determine sources of pollen for the honeybee in the Bojanów forest complex, Nowa Dęba Forest District (southeastern Poland).
Ernest Stawiarz   +2 more
doaj   +1 more source

Combined stress from parasites, pesticides and lack of flowers drives bee declines [PDF]

open access: yes, 2015
Bees are subject to numerous pressures in the modern world. The abundance and diversity of flowers has declined, bees are chronically exposed to cocktails of agrochemicals, and they are simultaneously exposed to novel parasites accidentally spread by ...
Botias Talamantes, Cristina   +3 more
core   +1 more source

Antioxidant properties, element contents and antimicrobial activities of bee pollen collected by Apis mellifera L. in Türkiye

open access: yesSpanish Journal of Agricultural Research, 2022
Aim of study: Recently, pollen has become a preferred nutritional supplement because of its complex composition. We examined the botanical origin, total phenolic/flavonoid content (TPC/TFC), antioxidant/antimicrobial activity, and element content of ...
Ilginc Kizilpinar-Temizer   +3 more
doaj   +1 more source

Sensitivity of the grassland-forest ecotone in East African open woodland savannah to historical rainfall variation [PDF]

open access: yes, 2014
. Fossil pollen records provide key insight into the sensitivity of terrestrial ecosystems to climate change at longer time scales. However, tracing vegetation response to relatively modest historical climate fluctuations is often complicated by the ...
Gelorini, Vanessa   +2 more
core   +1 more source

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