Results 41 to 50 of about 105,933 (212)

Late Holocene Environmental History and Norse Settlement in Outer Fjords from South Greenland: A Case Study at Lake Qallimiut

open access: yesGeosciences, 2023
To complement discussions about vegetation history and climate variations in south Greenland, especially during the Norse settlement, we developed a sedimentological multiproxy approach to study a 4300-year-old lacustrine core comprising pollen analysis,
Emilie Gauthier   +5 more
doaj   +1 more source

An investigation into the recent vegetation history of Great Wood, near Eggleston Co. Durham using fine resolution pollen analysis of Mor humus and relevant historical evidence. [PDF]

open access: yes, 1993
This study investigated the recent vegetation history of an ancient woodland, Great Wood, near Eggleston Co. Durham which has been part of the lands of Eggleston Hall since at least 1614.
Payne, Joanne
core  

An extracellular transglutaminase is required for apple pollen tube growth

open access: yes, 2010
An extracellular form of the calcium-dependent protein-crosslinking enzyme TGase (transglutaminase) was demonstrated to be involved in the apical growth of Malus domestica pollen tube.
Coutts, IG   +53 more
core   +1 more source

Application of Atmospheric Solids Analysis Probe Mass Spectrometry for the Taxonomic Analysis of Pollen

open access: yesFrontiers in Ecology and Evolution, 2021
Globally, both managed and wild pollination services are unable to meet current rates of crop production and pollination demand. Wild pollination services could be improved through the reforestation of agricultural land margins, however plant–pollinator ...
Adelina Latinovic   +3 more
doaj   +1 more source

Monitoring the fluvial palynomorph load in a lowland temperate catchment and its relationship to suspended sediment and discharge [PDF]

open access: yes, 2008
Despite it being a component of the seston we know very little about fluvial (waterborne) pollen and spore (palynomorph) transport. This paper presents the results of a monitoring programme conducted over two years and at a catchment scale in South West ...
Walling, D.E.   +2 more
core   +1 more source

Paleoenvironment conditions of the bottom sediment formation in the small lake depressions on the Pomorsky coast of the White Sea

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
New lithological, palinological and chronological data obtained through the study of bottom sediments from four small lake depressions on the Pomor Coast, Onega Bay, White Sea are presented.
Vasili Kolka   +2 more
doaj   +1 more source

Pollen physiology and fertilisation in Vicia Faba L [PDF]

open access: yes, 1990
In many legume crop species, early-formed fruits or those located closest to the photosynthate are more likely to mature than other fruits. This is so in the Vicia faba crop.
Telaye, A, Telaye, Asfaw
core  

Climate variability and human impact in South America during the last 2000 years: synthesis and perspectives from pollen records [PDF]

open access: yes, 2016
An improved understanding of present-day climate variability and change relies on high-quality data sets from the past 2 millennia. Global efforts to model regional climate modes are in the process of being validated against, and integrated with, records
Rull, V.   +65 more
core   +1 more source

Quality and Safety Assessment of Honey Imported from Ukraine to Poland: Physicochemical and Residue Analysis

open access: yesJournal of Apicultural Science
The aim of the study was to determine whether honey imported to Poland from Ukraine meets the quality standards and whether it is free of residues of plant protection products in accordance with the maximum permissible residue levels (MRLs).
Jaśkiewicz Katarzyna, Szczęsna Teresa
doaj   +1 more source

Vulnerability to Climate Change of Mangroves: Assessment from Cameroon, Central Africa

open access: yesBiology, 2012
Intertidal mangrove ecosystems are sensitive to climate change impacts, particularly to associated relative sea level rise. Human stressors and low tidal range add to vulnerability, both characteristics of the Doula Estuary, Cameroon.
Isabella Zouh, Joanna C. Ellison
doaj   +1 more source

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