Results 51 to 60 of about 2,475 (194)
Reproduction in rare plants may be influenced and limited by a complex combination of factors. External threats such as invasive species and landscape characteristics such as isolation may impinge on both pollination and seed predation dynamics, which in
Paul D Krushelnycky
doaj +1 more source
Taxonomic and functional trait diversity of wild bees in different urban settings [PDF]
Urbanization is one of the major anthropogenic processes contributing to local habitat loss and extirpation of numerous species, including wild bees, the most widespread pollinators. Little is known about the mechanisms through which urbanization impacts
Étienne Normandin +3 more
doaj +2 more sources
Ecology of native bees in North Taranaki, New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Zoology at Massey University, Manawatū, New Zealand [PDF]
Studies are increasingly finding that native bees are important pollinators in many systems, in both natural and agricultural settings. With the possible loss of honey bees due to various reasons, it has become clear that relying on major pollinator for ...
Hartley, Nikki Maria
core
New records of bees (Hymenoptera: Apoidea) from the Maltese Islands [PDF]
A total of 95 bee species have been recorded from the Maltese Islands (central Mediterranean Sea). The aim of the present note is to report newly recorded species within the study area.
Balzan, Mario V +4 more
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Mixed effects of urbanization on pollination services among four native plant species
We tested urbanization and fragmentation effects on pollination services using four native phytometer species that were deployed across 10 community gardens located in suburban and densely urbanized areas Landscape context generally did not influence pollination; however, for one of four phytometers (Lobelia siphilitica, pictured above) urban cover ...
Nicholas Sookhan +2 more
wiley +1 more source
Pollen sterols are highly diverse but phylogenetically conserved
Summary Phytosterols regulate cell membrane fluidity and are precursors for plant hormones and secondary metabolites in plants. Insects are auxotrophic for sterols; therefore, they have to consume phytosterols and dealkylate them to cholesterol. Some insects, including bees, which rely on dietary sources, primarily pollen, for sterols, cannot modify ...
Ellen C. Baker +8 more
wiley +1 more source
ФАУНА И БИОЛОГИЯ ПЧЕЛ РОДА HYLAEUS FABRICIUS, 1793 (HYMENOPTERA: COLLETIDAE) В АМУРСКОЙ ОБЛАСТИ
В Амурской области выявлено 14 видов пчел рода Hylaeus. Обобщены наблюдения за гнездовой активностью самок, особенностями питания и развития личинок. Приведены сведения о паразитах, экологии и фенологии видов Hylaeus.
E. V. Ignatenko
doaj
Os estudos da biologia floral e reprodutiva e a caracterização da heterostilia em Vismia guianensis realizaram-se na Reserva Ecológica de Dois Irmãos, Recife, PE, entre novembro/1997 e fevereiro/ 1998. V.
Mary Janice Lima dos Santos +1 more
doaj +1 more source
Peristiwa tsunami yang terjadi tahun 2004 telah mengubah berbagai aspek kegiatan masyarakat di Kabupaten Aceh Barat. Dalam aspek pertanian, kerusakan yang terjadi tidak hanya pada lahan budidaya tanaman tetapi juga ekosistem di sekitarnya.
Putri Mustika Sari +3 more
doaj +1 more source
The Bees of A.L. Mangham Jr. Regional Airport, Nacogdoches, Texas [PDF]
The United States is home to about 4,000 species of native bees, and many are critically important due to the pollination services they provide (Buchman & Nabhan 1996). Most of these are inconspicuous, solitary bees that nest in the ground.
Bennett, Daniel J., Pingedot, Ryan J.
core +1 more source

