Annual Variation in the Hatching Chronology of California Quail at the E. E. Wilson Wildlife Area, Oregon

The Murrelet ◽  
1986 ◽  
Vol 67 (3) ◽  
pp. 87
Author(s):  
John A. Crawford
Keyword(s):  
Annual Variation ◽  
California Quail

Annual variation in the timing of breeding, pre‑breeding foraging areas and corticosterone levels in an Arctic population of black-legged kittiwakes

2014 ◽  
Vol 496 ◽  
pp. 233-247 ◽  
Author(s):  
A Goutte ◽  
F Angelier ◽  
C Bech ◽  
C Clément-Chastel ◽  
G Dell’Omo ◽  
...  
Keyword(s):  
Annual Variation ◽  
Timing Of Breeding

A STUDY ON THE ANNUAL VARIATION OF ENERGY CONSUMPTION IN OFFICE BUILDINGS

2007 ◽  
Vol 72 (615) ◽  
pp. 81-87
Author(s):  
Kazuhiko SAKAMOTO ◽  
Saburo MURAKAWA ◽  
Michimasa SHINOHARA ◽  
Daisaku NISHINA ◽  
Yoshiyuki UEMURA
Keyword(s):  
Energy Consumption ◽  
Annual Variation ◽  
Office Buildings

scholarly journals Patterns of bird species richness explained by annual variation in remotely sensed Dynamic Habitat Indices

2021 ◽  
Vol 127 ◽  
pp. 107774
Author(s):  
Martina L. Hobi ◽  
Laura S. Farwell ◽  
Maxim Dubinin ◽  
Dmitrij Kolesov ◽  
Anna M. Pidgeon ◽  
...  
Keyword(s):  
Species Richness ◽  
Annual Variation ◽  
Bird Species ◽  
Remotely Sensed ◽  
Bird Species Richness ◽  
Dynamic Habitat

Litter fall of epiphytic macrolichens in two old Picea abies forests in Sweden

1985 ◽  
Vol 63 (5) ◽  
pp. 980-987 ◽  
Author(s):  
Per-Anders Esseen
Keyword(s):  
Standing Crop ◽  
Annual Variation ◽  
Length Distribution ◽  
Forest Stand ◽  
Epiphytic Lichens ◽  
Litter Fall ◽  
Alectoria Sarmentosa ◽  
Usnea Longissima ◽  
Tree Litter ◽  
Thallus Length

The seasonal and annual variation in the litter fall of epiphytic lichens and tree litter was studied over a period of 2 to 3 years at two forested hills in the eastern part of central Sweden. Litter fall was measured using traps and for one species, Usnea longissima, by collecting specimens present on the ground. Total litter fall amounted to 2.5 and 2.8 tons ha−1 year−1 of which lichens constituted 4.6 and 5.7% at the two sites. Lichen litter fall was highest during the period from late autumn to the beginning of summer. Both the lichens and the tree litter showed significant between-year differences. Usnea longissima had an annual turnover of 7.0 and 10.0% of the standing crop at the two sites. The thallus length distribution of U. longissima was positively skewed. It is concluded that dispersal of thallus fragments by wind evidently plays an important role for many of the filamentous lichens studied. It is suggested that U. longissima disperses over a much shorter distance than Alectoria sarmentosa and Bryoria spp. within a forest stand.

Growth and Reproduction of Dwarf Shrubs in a Subarctic Plant Community: Annual Variation and Above-Ground Interactions with Neighbours

1995 ◽  
Vol 83 (2) ◽  
pp. 263 ◽  
Author(s):  
A. Shevtsova ◽  
A. Ojala ◽  
S. Neuvonen ◽  
M. Vieno ◽  
E. Haukioja
Keyword(s):  
Plant Community ◽  
Annual Variation ◽  
Dwarf Shrubs ◽  
Growth And Reproduction

Annual variation in strains of barley yellow dwarf virus in Manitoba, and the occurrence of greenbug-specific isolates

1969 ◽  
Vol 47 (8) ◽  
pp. 1277-1283 ◽  
Author(s):  
C. C. Gill
Keyword(s):  
Annual Variation ◽  
Barley Yellow Dwarf Virus ◽  
Rhopalosiphum Padi ◽  
Schizaphis Graminum ◽  
Yellow Dwarf ◽  
Dwarf Virus ◽  
Barley Yellow Dwarf ◽  
Efficient Vector ◽  
Yellow Dwarf Virus ◽  
High Degree

Seventeen isolates of the aphid-borne barley yellow dwarf virus (BYDV), collected in southern Manitoba in 1966, were transmitted from oats to oats most efficiently by Rhopalosiphum padi. They were transmitted also by Macrosiphum avenae and all but two were transmitted by Schizaphis graminum and Acyrthosiphon dirhodum. Most of these isolates were not transmitted by R. maidis.Only 3 of 25 isolates collected in 1967 were transmitted by the five species of aphids in a pattern similar to that of the isolates collected in 1966. Twenty of the remainder were transmitted with a moderate to high degree of specificity by R. maidis, R. padi, or S. graminum. Two of the latter isolates were transmitted only by S. graminum. When the transmissibility of one of the isolates, for which S. graminum was the most efficient vector, was examined more critically, both the relative and the specific efficiency of the three vectors varied with the age of the infection in the source plants, though S. graminum was always the most efficient vector.

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