Results 111 to 120 of about 1,834,681 (387)

Preventing a Risk/Risk Trade-off: An Analysis of the Measures Necessary to Increase U.S. Pollinator Numbers [PDF]

open access: yes, 2017
This Note will proceed in four parts. Part II will discuss the importance of pollinators and the possible reasons for their declining numbers. Part III will delve into the current and proposed actions to increase pollinator populations that are taking ...
Acchiardo Vallejo, Camila
core   +2 more sources

Pollination biology and reproductive ecology of critically endangered endemic Campanula teucrioides in western Anatolia

open access: yesNordic Journal of Botany, EarlyView.
Campanula teucrioides Boiss. is a critically endangered species found in a single locality in western Turkey. Determining the population size of C. teucrioides and conducting reproductive biology studies are of great importance in determining the necessary strategy for the conservation of the species. The area where the plant distributed was determined
Volkan Eroğlu, Özcan Seçmen
wiley   +1 more source

Bee pollen in allergy and immunology. Short review

open access: yesHerba Polonica, 2017
Bee pollen is a natural resource - pollen collected by bees and stored in the beehive with various bee enzymes added as it is a mixture of plants pollen and bee saliva. It is rich source of various nutrients, among them exogenous amino acids.
Zarobkiewicz Michał K.   +4 more
doaj   +1 more source

Fly pollinator foraging in boreal forests is shaped by climate, forest structure and flower resources

open access: yesOikos, EarlyView.
Most insect pollinators are ectothermic and rely on external heat sources for temperature regulation. Forests, with their diverse canopy structures and sunlight penetration levels, create a mosaic of microclimates influencing these insects' behaviour.
Joan Díaz‐Calafat   +6 more
wiley   +1 more source

Brazilian bee pollen: phenolic content, antioxidant properties and antimicrobial activity

open access: yesJournal of Apicultural Research, 2020
Bee pollen has been promoted as a dietary supplement for humans due to its nutritional and bioactive properties. Sixty-two samples of Apis mellifera dehydrated bee pollen collected in Brazil (eight states and Federal District) were analyzed for phenolic ...
Vanilda Aparecida Soares de Arruda   +6 more
semanticscholar   +1 more source

Too Low to Kill: Concentration of the Secondary Metabolite Ranunculin in Buttercup Pollen does not Affect Bee Larval Survival [PDF]

open access: yes, 2018
Growing evidence suggests that the freely accessible pollen of some plants is chemically protected against pollen-feeding flower visitors. For example, a diet of pollen from buttercup plants (Ranunculus) recently was shown to have a deleterious effect on
Dorn, Silvia   +3 more
core  

Nectar concentrations of biogenic amines affect bumble bee behavior in a dose‐dependent manner

open access: yesOikos, EarlyView.
While foraging, pollinators encounter a wide array of molecules, some of which may influence their internal states and behaviors. Among these, biogenic amines – nitrogenous compounds that serve as essential neuromodulators in animals – have only recently been detected in floral nectar.
Marta Barberis   +9 more
wiley   +1 more source

Moisture source and diet affect development and reproduction of Orius thripoborus and Orius naivashae, two predatory anthocorids from southern Africa [PDF]

open access: yes, 2012
The effect of moisture source and diet on the development and reproduction of the pirate bugs, Orius thripoborus (Hesse) and Orius naivashae (Poppius) (Hemiptera: Anthocoridae) was examined in the laboratory. Both species had been collected in and around
Bonte, Jochem   +5 more
core   +1 more source

Classification of Bee Pollen and Prediction of Sensory and Colorimetric Attributes—A Sensometric Fusion Approach by e-Nose, e-Tongue and NIR

open access: yesItalian National Conference on Sensors, 2020
The chemical composition of bee pollens differs greatly and depends primarily on the botanical origin of the product. Therefore, it is a crucially important task to discriminate pollens of different plant species.
L. Sipos   +6 more
semanticscholar   +1 more source

The Benefits of Pollen to Honey Bees

open access: yesEDIS, 2010
ENY152, a 4-page illustrated fact sheet by Amanda Ellis, Jamie Ellis, Michael O’Malley, and Catherine Zettel Nalen, provides an overview of the nutritional needs of honey bees with an emphasis on the role of pollen — nutritional content, where it is produced, how it is collected, and how to ensure colony nutrition.
Amanda Ellis   +3 more
openaire   +3 more sources

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