Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Text] / G. A. Ivanova [et al.] // Environ. Res. Lett. - 2011. - Vol. 6, Is. 4. - Ст. 45203, DOI 10.1088/1748-9326/6/4/045203. - Cited References: 36. - The authors gratefully acknowledge financial support for this research from the National Aeronautics and Space Administration (NASA), the Land Cover Land Use Change (LCLUC) Science Program, the Russian Academy of Sciences, Siberian Branch, the Russian Fund of Fundamental Investigation, and International Science and Technology Center (project #3695). . - 6. - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: This study focused on structural analysis of ground carbon storage following fires in light conifer stands of the Lower Angara region (Siberia, Russia). Experimental fires of varying frontal intensity were conducted at Scots pine and mixed larch forests of southern taiga. Considerable amounts of surface and ground forest fuels (21-38 tC ha(-1)) enhanced low-to high-intensity fires. Post-fire carbon storage decreased by 16-49% depending on fire intensity and rate of spread, with depth of burn being 0.9-6.6 cm. Carbon emissions varied from 4.48 to 15.89 t ha(-1) depending on fire intensity and forest type. Depth of burn and carbon emissions for four major site types were correlated with a weather-based fire hazard index.

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Держатели документа:
[Ivanova, G. A.
Kukavskaya, E. A.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Conard, S. G.] US Forest Serv, Rocky Mt Res Stn, Missoula, MT USA
[McRae, D. J.] Canadian Forest Serv, Sault Ste Marie, ON P6A 2E5, Canada

Доп.точки доступа:
Ivanova, G.A.; Conard, S.G.; Kukavskaya, E.A.; McRae, D.J.

[Text] / R. T. Carde [et al.] // Ann. Entomol. Soc. Am. - 1996. - Vol. 89, Is. 5. - P745-753. - Cited References: 53 . - 9. - ISSN 0013-8746РУБ Entomology

Аннотация: Male Asian gypsy moths, Lymantria dispar (L.), were attracted to synthetic pheromone (cis-7R,8S-epoxy-2-methyloctadecane) in the Russian Far East, Central Siberia, and Germany, where this strain has recently been detected. A bimodal pattern of attraction was evident at all 3 sites. One peak of attraction was in early to midafternoon, with a 2nd, usually smaller peak, following sunset. Temperature modulated attraction: warm daytime temperatures increased catch, whereas low nighttime temperatures generally suppressed or eliminated attraction. However, the surge of male attraction to pheromone in the hour after sunset seemed unaffected by falling temperatures. As average temperatures at the 3 sites decreased, the daytime peak of male activity progressively shifted to later in the afternoon. Female eclosion in Germany also followed a bimodal pattern, with a major midmorning to midday peak of emergence and a 2nd, smaller peak, in the afternoon. The timing of male attraction allowed coordination of the ranging flight of the male with the availability of emerging and pheromone-emitting females. The congruence in daily activity patterns suggest that the timing of mating would not be a barrier to the hybridization of the Asian, European, and North American strains of this lymantriid in new areas of sympatry.

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Держатели документа:
UNIV MASSACHUSETTS,DEPT ENTOMOL,AMHERST,MA 01002
KANSAS STATE UNIV,DEPT ENTOMOL,MANHATTAN,KS 66506
US FOREST SERV,NORTHEASTERN CTR FOREST HLTH RES,NORTHEASTERN FOREST EXPT STN,HAMDEN,CT 06514
VN SUKACHEV INST FOREST,KRASNOYARSK 660006,RUSSIA

Доп.точки доступа:
Carde, R.T.; Charlton, R.E.; Wallner, W.E.; Baranchikov, Y.N.

[Текст] / D. L. GRODNITSKY // Zool. Zhurnal. - 1993. - Vol. 72, Is. 7. - С. 84-94. - Cited References: 48 . - 11. - ISSN 0044-5134РУБ Zoology

Аннотация: Vertical and horizontal periodic movements of the body following each wing stroke were investigated in three butterfly species during their free flight in a transparent cage. Distribution of the movements along the stroke cycle shows that specimens climb during downstroke, supination, and upstroke. Pronation of the wings in the top of their trajectory (Weis-Fogh's clap-and-fling mechanisms) is followed by height reduction. The horizontal distance that insects cover during pronation and downstroke exceeded mean value and it was less than the mean value during supination and upstroke. The data acquired suggest that distributions in lift and thrust along a stroke cycle are characterized by sinusoid-like curves as a first approximation. Maximal lift is generated during the end of each downstroke, while the maximal thrust coincides in time with the end of the upstroke and the clap of the wings. A new non-steady mechanism of aerodynamic force generation is proposed. The mechanism is connected with air throwing off the flapping planes during their pronation and supination. Horizontal flight speed is negatively correlated with the angle between the body and the horizon, but does not depend on wing beat frequency. A hypothesis is suggested that insect flapping flight power regulation system includes a finite number of stable kinematic patterns each corresponding to a particular flight mode and characterized by specific values of intimately correlated stroke parameters.


Доп.точки доступа:
GRODNITSKY, D.L.