Results 31 to 40 of about 245,945 (308)

Where Does Honey Bee (Apis mellifera L.) Pollen Come from? A Study of Pollen Collected from Colonies at Ornamental Plant Nurseries

open access: yesInsects, 2022
Ornamental nursery plants are both a major agricultural industry in the U.S. and a major feature of the urban and suburban landscape. Interest in their relationship with pollinators is two-fold: the extent to which they provide a nutritional benefit to ...
Kimberly A. Stoner   +4 more
doaj   +1 more source

Can ploidy levels explain the variation of Herbertia lahue (Iridaceae)? [PDF]

open access: yesGenetics and Molecular Biology
Polyploidy is often related with phenotypic variation, as observed in Herbertia lahue, a geophyte species. This study examined the H. lahue polyploid series and departure in cytogenetic, morphometric, and pollen data.
Eudes Maria Stiehl-Alves   +5 more
doaj   +1 more source

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

Iron Age to Medieval entomogamous vegetation and Rhinolophus hipposideros roost in south-eastern Wales (UK) [PDF]

open access: yes, 2006
Karst cave systems are well developed in Wales (UK) and, in some instances, constitute important bat roosts. Ogof Draenen, near Blaenavon in south-east Wales, is the most recent major cave discovery (1994) with already > 70 km of passages explored ...
Bronk   +24 more
core   +1 more source

Structure Formation in Butterfly Scales: Interplay of Genetic Control, Mechanical Instabilities, and Dynamic Material Properties

open access: yesAdvanced Functional Materials, EarlyView.
Butterfly wing scales are intricate cuticular functional nanosctructures. This perspective suggests that spatially varying material properties, cytoskeletal constraints, and growth‐driven mechanical instabilities shape the resulting nanoscale architectures created from single cells.
Anupama Prakash   +10 more
wiley   +1 more source

Reconstruction of arboreal vegetation dynamics of the area of Museum-Reserve Kulikovo Pole in the middle and late Holocene

open access: yesNature Conservation Research: Заповедная наука, 2017
The paper presents reconstructions of vegetation and forest coverage dynamics in the area of the State Military-Historical and Natural Museum-Reserve «Kulikovo Pole» (Upper Don River basin) in the middle and late Holocene, based on modern and fossil ...
Elena Yu. Novenko
doaj   +1 more source

Automation of pollen analysis using a computer microscope : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Computer Systems Engineering at Massey University [PDF]

open access: yes, 2004
The classification and counting of pollen is an important tool in the understanding of processes in agriculture, forestry, medicine and ecology. Current pollen analysis methods are manual, require expert operators, and are time consuming.
Holdaway, Craig Alexander
core  

Pollen elicits proboscis extension but does not reinforce PER learning in honeybees [PDF]

open access: yes, 2013
The function of pollen as a reward for foraging bees is little understood, though there is evidence to suggest that it can reinforce associations with visual and olfactory floral cues.
Casteel   +10 more
core   +2 more sources

A Mechanistic Study of Bio‐Based Nanotemplated Carbon Nanofibers Derived From Water Processable Lignin Blends for Sustainable Energy Storage Applications

open access: yesAdvanced Materials, EarlyView.
As‐spun carbon materials produced from Lignosulfonate, gelatin, and alginate, selected for water solubility, and ability to produce templated sustainable carbon nanostructures. Gelatin and alginate are sacrificial during thermal processing, allowing the production of engineered high surface area nanostructures, which are further characterized for ...
Judith Miralda‐Jalle   +6 more
wiley   +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

Home - About - Disclaimer - Privacy