Results 201 to 210 of about 1,531,485 (339)

POLLEN GRAINS

The Journal of Nervous and Mental Disease, 1937
openaire   +2 more sources

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source

Airborne pollen allergen quantification or pollen grain counts?

, 2017
There is a generalized consensus about the need to know the local aeropalynology in order to be able to properly understand pollinosis and make a correct etiological diagnosis. On the other hand, the aerobiological data provided by monitoring networks allow effective measures to be taken to prevent exposure.The aeropalynological characterization of the
Moreno-Grau, Stella, Elvira-Rendueles, Belén, Moreno, José Mª   +2 more
openaire   +1 more source

Metabarcoding of Pollen Carried by Syrphids Reveals Novel Plant–Pollinator Interactions in a Protected Natural Area and Agricultural Sites

Entomologia Experimentalis et Applicata, EarlyView.
Using DNA metabarcoding, this study investigates pollen transported by syrphids (Syrphidae) in the Dolomiti Bellunesi National Park and agricultural sites in Northern Italy. The analysis reveals a high diversity of visited plant taxa, including previously undocumented plant–pollinator interactions.
Serena Magagnoli, Daniele Sommaggio, Claudio Ratti, Riccardo Baroncelli, Andrea Menicucci, Enrico Vettorazzo, Giovanni Burgio   +6 more
wiley   +1 more source

Quantifying Species‐ and Community‐Level Predation by Carabids on Pests and Beneficials in Wheat and Beet Fields

Entomologia Experimentalis et Applicata, EarlyView.
Using a model that translates qualitative prey detection data (presence/absence in predator gut contents) into quantitative predation rates, we estimate species‐specific diets of nine carabid species across three cropping contexts (wheat, sugar beet, and fodder beet) for five prey types.
Marion Rosec, Yann Tricault, Sylvain Poggi, Elsa Canard, Ambre Sacco Martret de Préville, Pierre Gendron, Lena Barascou, Marianne Doehler, Ségolène Buzy, Aurore Arnoult, Anne Le Ralec, Manuel Plantegenest, Abel Masson   +12 more
wiley   +1 more source

Nutritional composition of pollen stores in managed bees across European agro‐ecosystems reveals species‐specific differences but limited pesticide effects

Ecological Entomology, EarlyView.
In the pollen stores of three bee species deployed across 128 European sites, bumble bees harboured lower lipid content and higher protein‐to‐lipid ratios than honey bees and mason bees. Toxicity‐weighted pesticide risk did not alter protein‐to‐lipid ratios, but higher risk was associated with reduced protein and lipid content in the pollen stores of ...
Antoine Gekière, Clément Tourbez, Maryse Vanderplanck, Tomasz Kiljanek, Guillaume Ghisbain, Elif Kardas, Irene Bottero, Marie‐Pierre Chauzat, Elena Cini, Francesca Corvucci, Joachim R. de Miranda, Gennaro Di Prisco, Christophe Dominik, Francesca V. Grillenzoni, Simon Hodge, Anina Knauer, Marion Laurent, Vicente Martínez‐López, Risto Raimets, Janine M. Schwarz, Deepa Senapathi, Giorgia Serra, Giovanni Tamburini, Dimitry Wintermantel, Mark J. F. Brown, Matthias Albrecht, Cecilia Costa, Pilar De la Rúa, Alexandra‐Maria Klein, Marika Mänd, Simon G. Potts, Maj Rundlöf, Oliver Schweiger, Jane C. Stout, Denis Michez   +34 more
wiley   +1 more source

Pollen Grains of Picea [PDF]

Botanical Gazette, 1906
openaire   +1 more source

Concentrated vulnerabilities in bees: Diet specialists have smaller geographic ranges

Insect Conservation and Diversity, EarlyView.
Niche breadth theory predicts a positive association between range size and diet breadth, which could concentrate risk among specialists, but this is not well established for bees. Using global occurrence data (range size) and natural history collection‐derived pollen data (diet breadth), we compared these traits in 633 species from six families and ...
Charles N. Thrift, Thomas J. Wood, An Bui, Hillary S. Young, Katja C. Seltmann   +4 more
wiley   +1 more source

Do Laboratory‐Reared Flies Perform Differently as Pollinators? Morphology, Behaviour and Pollination Performance of Eristalis tenax (Syrphidae)

Journal of Applied Entomology, EarlyView.
ABSTRACT Flies (Diptera) are important pollinators in global agriculture, yet little is known about how intraspecific trait variation influences their pollination performance. We compared morphological traits, foraging behaviour and pollination‐related performance metrics between laboratory‐reared (hereafter lab‐reared) and wild populations of ...
Abby E. Davis, Lena Alice Schmidt, Karen C. B. S. Santos, Samantha Harrington, Raylea Rowbottom, Amy Lucas, Cameron Spurr, Blake M. Dawson, Romina Rader   +8 more
wiley   +1 more source

Hybrid sorghum breeding in China: A historical review and perspectives

Journal of Integrative Plant Biology, EarlyView.
To commemorate the 60th anniversary of the promotion and application of three‐line hybrid sorghum in China, this review highlights pivotal scientific breakthroughs, systematically summarizes the progress in hybrid sorghum breeding and dwarf sorghum breeding in the country, and presents an outlook on the future of sorghum breeding.
Xiangxiang Meng, Lu Li, Qian Qian, Liang Jiang, Zhaosheng Kong   +4 more
wiley   +1 more source