Results 21 to 30 of about 1,117,122 (295)

Macrofossils and pollen representing forests of the pre-Taupo volcanic eruption (c. 1850 yr BP) era at Pureora and Benneydale, central North Island, New Zealand. [PDF]

open access: yes, 1995
Micro- and macrofossil data from the remains of forests overwhelmed and buried at Pureora and Benneydale during the Taupo eruption (c. 1850 conventional radiocarbon yr BP) were compared. Classification of relative abundance data separated the techniques,
Lowe, David J.   +7 more
core   +1 more source

Pollen morphology of the Polish species of the genus Sorbus L.

open access: yesActa Societatis Botanicorum Poloniae, 2011
This paper presents the results of the study on pollen morphology of five Polish species of the genus Sorbus L. (S. aria (L.) Crantz, S. aucuparia L. Emend. Hedl., S. chamaemespilus (L.) Crantz, S. intermedia (Ehrh.) Pers. and S. torminalis (L.) Crantz).
Leszek Bednorz   +3 more
doaj   +1 more source

Pollen morphology of Quercus (subgenus Quercus, section Quercus) in Iran and its systematic implication

open access: yesActa Societatis Botanicorum Poloniae, 2012
For the first time, pollen morphology of 9 (4 spp. and 5 subspp.) taxa representing lobed leaved oaks of Iran in the family of Fagaceae has been examined and illustrated using light microscopy and scanning electron microscopy of acetolysed material ...
Parisa Panahi   +3 more
doaj   +1 more source

Perspectives on deciphering mechanisms underlying plant heat stress response and thermotolerance [PDF]

open access: yes, 2013
Global warming is a major threat for agriculture and food safety and in many cases the negative effects are already apparent. The current challenge of basic and applied plant science is to decipher the molecular mechanisms of heat stress response (HSR ...
Fragkostefanakis, Sotirios   +1 more
core   +1 more source

Comparative pollen morphological analysis in the subgenera Passiflora and Decaloba

open access: yesAnais da Academia Brasileira de Ciências, 2017
The genus Passiflora is the most diversified of the Passifloraceae, and its palynology presents wide morphological variability. The objective of the study was to evaluate the pollen morphology of 18 Passiflora species in order to identify informative ...
TALIANE L. SOARES   +4 more
doaj   +1 more source

Pollen Atlas of the Flora of Egypt 3. Taxa of Pteridophyta and Gymnospermae [PDF]

open access: yesTaeckholmia, 2002
The spore and pollen morphology of 15 species of Pteridophyta and Gymnospermae represented in the flora of Egyptis reported and described. These belong to four types: inaperturate (alete) with elaters (one species) and aperturatewithout elaters (14 ...
Salah El Naggar, M. El Hadidi
doaj   +1 more source

Human impact on an island ecosystem: pollen data from Sandoy, Faroe islands [PDF]

open access: yes, 2008
<b>Aim</b>: To investigate the form and dynamics of ecosystems on an isolated island in the North Atlantic before human settlement in the first millennium ad, and the effects of human activities thereafter. <b>Location</b>: The
Church, Mike J.   +20 more
core   +1 more source

Effective long-distance pollen dispersal in Centaurea jacea [PDF]

open access: yes, 2009
BACKGROUND: Agri-environment schemes play an increasingly important role for the conservation of rare plants in intensively managed agricultural landscapes.
Albrecht, M.   +15 more
core   +2 more sources

Pollen characterisation of Maltese honey [PDF]

open access: yes, 2013
In 2004 and 2005, pollen characterisation of 35 samples of honey collected from the islands of Malta and Gozo, was carried out with the aim to identify the botanical origin of honey produced on these islands.
Mifsud, David   +2 more
core   +1 more source

Palynological study on some species of Convolvulaceae and its taxonomic significance [PDF]

open access: yesTaeckholmia, 2005
Pollen morphology of 34 species representing eight genera ofConvolvulaceae was investigated using light and scanning electronmicroscopy. Three pollen types were recognized viz.
Ahmed Osman, Kadry Abdel khalik
doaj   +1 more source

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