Wyniki wyszukiwania

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Production rate and economic efficiency of mid-class harvesters in thinnings of mountainous terrains of Central Slovakia

100%

Tajbos J., Messingerova V.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2014

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tom 17

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nr 2

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Effect of sensitivity to abscisic acid on scaling relationships for biomass production rates and body size in Arabidopsis thaliana

84%

Zhang H., Wang G. X., Shen Z. X., Zhao X. Z., Qiu M. Q.

Acta Physiologiae Plantarum

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2006

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tom 28

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nr 4

The allometric re lationships for plant daily biomass production rates, different measures of body size (dry weight and length) and photosynthetic biomass per plant are reported for two mutants of Arabidopsis thaliana (abi1-1, insensitive to ABA; era1-2, hypersensitive to ABA). Scaling relationships, such as daily rate of growth (G) vs body mass (M), plant body length or plant height (L) vs body mass (M), photosynthetic biomass (Mp) vs non-photosynthetic biomass (Mn), and daily rate of growth (G) vs. photosynthetic biomass (Mp) were significantly different in abi1-1 and era1-2. It is implied that the sensitivtty to abscisic acid may change the scaltng refation- ships for plant biomass production rate and body size in Arabidopsis thaliana. Because these scaling relationships are closely related to sensitivity to abscisic acid, they are of importance for phytohormonal ecology.

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Why life histories are diverse

84%

Kozlowski J.

Polish Journal of Ecology

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2006

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tom 54

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nr 4

Why do some animals weigh a fraction of a milligram and others many tons? Why do some animals mature after a few days and others need several years? Why do some animals grow and then reproduce without growing, while others continue growing after maturation? Why are growth curves so often well-approximated by von Bertalanffy’s equation? Why do some animals produce myriads of tiny eggs and others produce only a few large offspring? Evolution of life histories is driven basically by the size-dependences of three parameters: the resource acquisition rate, metabolic rate and mortality risk. The combinations of size-dependences of this trio produce a plethora of locally optimal life histories, and even more sub-optimal strategies which must coexist with optimal ones in the real world. Additionally, selection forces differ depending on whether a population stays most of the time at equilibrium or in an expansion phase. Life history evolution cannot be understood without mathematical modelling, and optimization of life-time resource allocation is a powerful approach to that, though not the only one. Modelling outcomes from studies based on resource allocation optimization are presented here mainly as graphs.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Electronic Journal of Polish Agricultural Universities. Series: Forestry

1 Polish Journal of Ecology

1 Kozlowski J.

1 Messingerova V.

1 Qiu M. Q.

1 Shen Z. X.

1 Tajbos J.

1 Wang G. X.

1 Zhang H.

1 Zhao X. Z.

1 2014

2 2006

Production rate and economic efficiency of mid-class harvesters in thinnings of mountainous terrains of Central Slovakia

Effect of sensitivity to abscisic acid on scaling relationships for biomass production rates and body size in Arabidopsis thaliana

Why life histories are diverse