Growth Rates of Some Ranids under Natural Conditions

Copeia ◽  
1953 ◽  
Vol 1953 (2) ◽  
pp. 73 ◽  
Author(s):  
Richard A. Ryan
Keyword(s):  
Growth Rates ◽  
Natural Conditions

GROWTH STUDIES OF REINDEER FAWNS

1962 ◽  
Vol 40 (5) ◽  
pp. 863-869 ◽  
Author(s):  
Charles J. Krebs ◽  
I. McT. Cowan
Keyword(s):  
Growth Rates ◽  
Growth Pattern ◽  
Early Growth ◽  
Mackenzie Delta ◽  
Age Classes ◽  
Natural Conditions ◽  
Rate Of Growth ◽  
Growth Studies ◽  
Weight Data ◽  
Wild Reindeer

A study of the growth of reindeer fawns was carried out during the spring and summer of 1958 in the Mackenzie Delta, N.W.T. Growth rates were obtained for four fawns under natural conditions. Early growth of the fawns (0–2 months) can usually be divided into three phases and some possible reasons for this are given. The rate of growth of reindeer fawns is slightly less than that of Columbian black-tailed deer fawns. Some weight data for different sex and age classes of wild reindeer are given, and it is concluded that the Mackenzie Delta reindeer do not differ greatly in growth pattern from Russian reindeer.

Preliminary Observations on the Growth of Transplanted Peltigera Canina Under Semi-Natural Conditions

1997 ◽  
Vol 29 (1) ◽  
pp. 91-96 ◽  
Author(s):  
M. Webster ◽  
D. H. Brown
Keyword(s):  
Growth Rates ◽  
Linear Growth ◽  
Natural Conditions ◽  
Peltigera Canina

AbstractPeltigera canina thalli have been successfully transplanted onto soil in a garden and in flowerpots. Garden samples showed marked seasonality and achieved growth rates of 6·4 cm per year. Pot-grown samples showed variation in the growth of individual thallus lobes and established that, under different soil hydration regimes, permanently hydrated thalli could sustain considerable linear growth rates for at least 140 days.

Dormancy, germination and seedling growth of two Kalaharian perennials of the genus Harpagophytum (Pedaliaceae)

1988 ◽  
Vol 4 (2) ◽  
pp. 185-198 ◽  
Author(s):  
W. H. O. Ernst ◽  
T. Tietema ◽  
E. M. Veenendaal ◽  
R. Masene
Keyword(s):  
Gibberellic Acid ◽  
High Temperatures ◽  
Seedling Growth ◽  
Seed Coat ◽  
Growth Rates ◽  
Natural Conditions ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Respiration Rates ◽  
Drought Avoidance

ABSTRACTDormancy and germination ecology of two Harpagophytum species (Pedaliaceae) from an open Acacia savanna in Botswana were investigated. The maintenance of dormancy is governed partly by the seed coat but mainly by the endosperm and the embryo itself, as demonstrated by removal of the endosperm. Dissemination of the seed from the fruit can be delayed for several years without affecting the viability of the embryo, due to very low respiration rates.Germination can be enhanced slightly by high temperatures under natural conditions, and by gibberellic acid or removal of the endosperm under laboratory conditions. Relative growth rates for both Harpagophytum species are lower than for subtropical grasses and legumes, due to a strong investment in root and tuber biomass. Germination and seedling growth is discussed in relation to the drought avoidance syndrome and the animal disperser syndrome.

scholarly journals Growth rates of common pelagic ciliates in a highly eutrophic lake measured with a modified dilution method

2016 ◽  
Vol 45 (2) ◽  
Author(s):  
Krzysztof Rychert
Keyword(s):  
Growth Rates ◽  
Eutrophic Lake ◽  
Dilution Method ◽  
Size Fractionation ◽  
Natural Conditions ◽  
Fractionation Method ◽  
Dilution Experiments

AbstractThe growth rates of ciliates estimated under natural conditions with the widely used size fractionation method are much lower than those observed in cultures. However, recent studies performed with a modified dilution method demonstrated that the size fractionation method underestimates the ciliate growth, because it does not remove predators of the same size as the organisms studied. Thus, it is still unresolved whether ciliates are food-limited in different systems and whether their growth rates are indeed lower than those in cultures. This study was conducted in highly eutrophic Lake Gardno using a modified dilution method. Each time, two dilution experiments were performed (around noon and around midnight). Four small, common ciliates from the genera

Giant and long-lived? Age structure in Macroscincus coctei, an extinct skink from Cape Verde

2003 ◽  
Vol 24 (4) ◽  
pp. 459-470 ◽  
Author(s):  
Fabio Guarino ◽  
Franco Andreone
Keyword(s):  
Life Span ◽  
19Th Century ◽  
Body Length ◽  
Age Structure ◽  
Growth Rates ◽  
Sexual Difference ◽  
Cape Verde ◽  
Maximum Life Span ◽  
Natural Conditions ◽  
The 19Th Century

AbstractThe age structure of the extinct giant Cape Verde skink Macroscincus coctei was studied using skeletochronology applied to 11 preserved males, 15 females, and one juvenile, collected at the end of the 19th century. Counts of lines of arrested growth (LAGs) indicated that in this species — which lived on islets with extreme natural conditions (e.g., hard aridity, lack of rainfall) — the maximum life span was estimated as 16 years for males and 12 years for females; the single juvenile was 4 years old. Although the sexes had similar mean ages, mean body length of males was significantly higher than that of females (283 versus 255 mm). There was no clear relationship between body length and estimated age, although the largest males were also the oldest. The analysis of LAGs revealed a sexual difference in growth rates, males reaching greater size earlier than females.

Reduced growth rates of hair in mice following radiation

1966 ◽  
Vol 94 (4) ◽  
pp. 491-498 ◽  
Author(s):  
F. D. Malkinson
Keyword(s):  
Growth Rates

Institutional Theory of Endless Redistribution

2005 ◽  
pp. 4-18 ◽  
Author(s):  
K. Sonin
Keyword(s):  
Property Rights ◽  
Institutional Theory ◽  
Growth Rates ◽  
Rent Seeking ◽  
Economic Institutions ◽  
Wide Spread ◽  
Grass Roots ◽  
Protection Systems ◽  
Private Protection ◽  
The Rich

In unequal societies, the rich may benefit from shaping economic institutions in their favor. This paper analyzes the dynamics of institutional subversion by focusing on public protection of property rights. If this institution functions imperfectly, agents have incentives to invest in private protection of property rights. The ability to maintain private protection systems makes the rich natural opponents of public protection of property rights and precludes grass-roots demand to drive the development of the market-friendly institution. The economy becomes stuck in a bad equilibrium with low growth rates, high inequality of income, and wide-spread rent-seeking. The Russian oligarchs of the 1990s, who controlled large stakes of newly privatized property, provide motivation for this paper.

Waiting for a New Model of Growth: Russia’s Social and Economic Development in 2013

2014 ◽  
pp. 4-32 ◽  
Author(s):  
V. Mau
Keyword(s):  
Economic Policy ◽  
Economic Development ◽  
Economic Performance ◽  
Growth Rates ◽  
Global Crisis ◽  
New Model ◽  
Social And Economic Development ◽  
Economic Risks

The paper deals with Russian social and economic development in 2013 and prospects for the next year or two. The author discusses the logic and trends of the global crisis started in 2008. This is the basis for further analysis of current Russian economic performance with special emphasis on the problem of growth rates deceleration. Special attention is paid to economic risks and priorities of economic policy.

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