Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Lupinus arcticus"'
Autor:
Clara Reid
Publikováno v:
The Arbutus Review. 10:83-99
Pollination by insects is a mutualistic relationship in which flowers receive pollen for reproduction while pollinators are rewarded with pollen or nectar. Floral longevity (the period an individual flower blooms) and floral attraction (the period du
Publikováno v:
Arctic, Antarctic, and Alpine Research. 43:442-456
Substantial climate warming is predicted for high latitude regions and may have large impacts on tundra communities. As part of the International Tundra Experiment, this study characterized plant responses to natural and experimental variations in te
Autor:
Gregory J. Sharam, Roy Turkington
Publikováno v:
Canadian Journal of Botany. 83:1345-1348
Sparteine is a neurological toxin found in arctic lupine ( Lupinus arcticus S. Wats.) and is probably used as a defensive chemical to deter herbivory, particularly by snowshoe hares ( Lepus americanus Erxleben). Lupine leaves were collected in southw
Autor:
Roy Turkington, Leonardo Frid
Publikováno v:
Canadian Journal of Zoology. 79:874-880
We examined how herbivore distribution and density, neighboring plant density and species composition, and individual plant morphology all influence the risk that individual arctic lupines (Lupinus arcticus) will be browsed by arctic ground squirrels
Autor:
Roy Turkington, Stephanie A Graham
Publikováno v:
Canadian Journal of Botany. 78:753-758
A demographic study was conducted on field populations of Lupinus arcticus S. Wats. growing in the understory of a white spruce dominated forest, near Kluane Lake, Yukon. The relative effects of soil fertility level, neighbours, and herbivory were as
Publikováno v:
Northwestern Naturalist. 89:115-117
DEARING MD. 1996. Disparate determinants of summer and winter diet selection of a generalist herbivore, Ochotona princeps. Oecologia 108:467–478. DEARING MD. 1997. The manipulation of plant toxins by a food-hoarding herbivore, Ochotona princeps. Ec
Autor:
Straka, Jason Ryan
There is concern that climate change may cause mismatches between timing of flowering and activity of pollinators (phenology). However, concluding that mismatches will occur, and have serious consequences for pollination services, requires assumption
Externí odkaz:
http://hdl.handle.net/1828/4326
Publikováno v:
The New phytologistReferences. 182(4)
Autor:
Walter Majak, Derek Munro, Roy A. Smith, Zongyi Duan, Albert M. Davis, Robert T. Ogilvie, William J. Keller
Publikováno v:
Phytochemistry. 36:883-885
Sparteine, β-isosparteine and multiflorine were the major alkaloids in a population of Lupinus arcticus subsp. subalpinus while ammodendrine, 5,6-dehydrolupanine, lupanine and anagyrine were the major alkaloids in L. polyphyllus . The alkaloid compo
Autor:
B. Scott Gilbert
Publikováno v:
Canadian Journal of Zoology. 68:1600-1602
Snowshoe hares (Lepus americanus) in the southwest Yukon foraged in winter on ground vegetation by digging feeding craters in snow. Hares utilized at least three species: Dryas drummondii, Hedysarum mackenzii, and Lupinus arcticus. Hares dug feeding