Results 51 to 60 of about 85,082 (257)

Recent pollen assemblages from Protected Areas of European Russia as a key to interpreting the results of paleoecological studies

Nature Conservation Research: Заповедная наука, 2017
The paper presents the results of studies of 59 recent pollen assemblages from protected areas located in the forest and steppe zones of the East European plain.
Elena Yu. Novenko, Natalya G. Mazei, Valentina P. Zernitskaya   +2 more
doaj   +1 more source

Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

American Journal of Botany, EarlyView.
Abstract Premise Changing climates are leading to more frequent and severe heat waves, potentially threatening plant populations. Both acclimation to stress and selection for heat‐escape or heat‐resistance phenotypes occur during heat waves. However, plastic responses and selection do not necessarily interact cohesively—even producing trait responses ...
Lana F. Gaspard, Elissa Harb, Stacy D. Holt Jr., Courtney M. Patterson, Nicholas J. Kooyers   +4 more
wiley   +1 more source

Preliminary data on Brazilian monofloral honey from the northeast region using FT-IR ATR spectroscopic, palynological, and color analysis

Química Nova, 2014
Fourier transform infrared attenuated total reflectance (FT-IR ATR) spectroscopy was used to determine 14 different measurands in northeast Brazilian honey samples.
Ligia Bicudo de Almeida-Muradian, Renato J. Sousa, Ortrud Monika Barth, Peter Gallmann   +3 more
doaj   +1 more source

Phylogenomic insights into the genus Tulipa (Liliaceae): Taxonomy, evolution, and biogeography

American Journal of Botany, EarlyView.
Abstract Premise Tulips are one of the best‐known geophytes, but their taxonomy remains convoluted and their evolutionary history poorly understood. Here, we used plastid genomes to identify some issues with current classification, understand the diversification history of the genus, and identify potential species linked to historical cultivation ...
Brett Wilson, Maarten J. M. Christenhusz, Nathanael Walker‐Hale, Natalya Beshko, Mariyo Boboev, Colin Clubbe, Davron Dekhkonov, Aibek Dolotbakov, Mehmet Firat, Thomas Freeth, Sjaak de Groot, Avni Hajdari, Georgy A. Lazkov, Ormon Sultangaziev, Komiljon S. Tojibaev, Ben J. M. Zonneveld, Kaiyrkul T. Shalpykov, Samuel F. Brockington   +17 more
wiley   +1 more source

Constructing more comprehensive pollination networks: integrating diurnal and nocturnal pollen data with visitation in a subalpine wetland community

Frontiers in Plant Science
IntroductionSampling for describing plant–pollinator interaction networks has been performed using techniques that either focus on the plants (with flower-visit data) or the animals (with analyzing pollen on the body surface of flower visitors).
Yue Teng, Jana C. Vamosi, Xiao-Fan Wang, Yan-Bing Gong   +3 more
doaj   +1 more source

Reproductive stages in lowbush blueberry (Vaccinium angustifolium) occur earlier with increasing temperature

American Journal of Botany, EarlyView.
Abstract Premise Climate change is altering the timing of many plant phenological events, yet most studies focus on flowering, with less attention given to later reproductive stages such as fruit development and ripening. Vaccinium angustifolium (lowbush blueberry) is an important perennial berry species that may be sensitive to these changes.
Jenna Floyd, Elise Cadiou, Alain G. Belliveau, Zoe A. Panchen, Terrell T. Roulston, Zoë Migicovsky   +5 more
wiley   +1 more source

Sediment Carbon Accumulation in Southern Latitude Saltmarsh Communities of Tasmania, Australia

Biology, 2018
Carbon sequestration values of wetlands are greatest in their sediments. Northern hemisphere research dominates the earlier saltmarsh carbon sequestration literature, recently augmented by analyses across mainland Australia where species assemblages ...
Joanna C. Ellison, Kim M. Beasy
doaj   +1 more source

Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America

American Journal of Botany, EarlyView.
Abstract Premise The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the well‐documented “fern spore spike.” However, fern macrofossil records across the K–Pg boundary are less understood.
Fern B. Holian, Emily B. Sessa, Richard S. Barclay, Regan E. Dunn, Jacquelyn L. Gill, Kirk R. Johnson, S. Augusta Maccracken, Ian M. Miller, Jarmila Pittermann, Ellen D. Currano   +9 more
wiley   +1 more source

Using palynological evidence from royal jelly to mediate the spread of Paenibacillus larvae in Brazil

Hoehnea
Royal jelly may contain pollen grains and their presence can be used to determine the phytogeographical origin of the product. This study analyzed the phytogeographical origin of commercial royal jelly samples from São Paulo State, tested as part of the ...
Cynthia Fernandes Pinto da Luz, Lubiane Guimarães-Cestaro, José Eduardo Serrão, Dejair Message, Marta Fonseca Martins, Maria Luisa Teles Marques Florêncio Alves, María Carmen Seijo-Coello, Érica Weinstein Teixeira   +7 more
doaj   +1 more source

Iron Age peat cutting and ritual depositions in bogs – new evidence from Fuglsøgaard Mose, Denmark

Danish Journal of Archaeology, 2020
With the discovery of peat and gyttja deposits containing archaeological remains, sealed below colluvium, at Fuglsøgaard in eastern Jutland came a rare opportunity to investigate an Iron Age votive bog with abundant traces of peat cutting and subsequent
Morten Fischer Mortensen, Charlie Christensen, Karin Johannesen, Ernst Stidsing, Reno Fiedel, Jesper Olsen   +5 more
doaj   +1 more source