Although precipitation interannual variability is projected to increase due to climate change, effects of changes in precipitation variance have received considerable less attention than effects of changes in the mean state of climate. Interannual precipitation variability effects on functional diversity and its consequences for ecosystem functioning are assessed here using a 6-year rainfall ma...

Phenological changes among plants due to climate change are well documented, but often hard to interpret. In order to assess the adaptive value of observed changes, we study how annual plants with and without growth constraints should optimize their flowering time when productivity and season length changes. We consider growth constraints that depend on the plant's vegetative mass: self-shading...

the present study used different categories of organized sector manufacturing industries pooled data for the periods of 1981-82 and 2007-08 in haryana state (india). the present undertaking seeks to analyze the inter-temporal and inter-industry comparison of total factor productivity (tfp) measured by malmquist productivity index - an application of dea which calculates the indices of tfp and i...

In some situations the producers desire to maximize total profit of Decision Making Units (DMUs) while the inputs and outputs prices of DMUs change from one time period to another. In this paper, the researchers develop productivity index when producers are going to maximize total profit when the price of inputs and outputs are known.The proposed method uses all price information about inputs a...

the index is excellent by the malmquist index as extended to productivity measurement. the index developed here is defined in terms of input cost rather than input quantity distance functions in supply chain. therefore, we propose productivity change is decomposed into overall efficiency and cost technical change. these decompositions provide a clearer situation of the root sources of supply ch...

Changes in the frequency, duration, and severity of climate extremes are forecast to occur under global climate change. The impacts of climate extremes on forest productivity and health remain difficult to predict due to potential interactions with disturbance events and forest dynamics-changes in forest stand composition, density, size and age structure over time. Such interactions may lead to...

This paper examines the current food crises, the projected effect of climate change, the vulnerabilities created by regional concentrations of food production, imports and exports, and the significant role of women as food producers, consumers and family food managers. Bridging productivity differentials between male and female farmers, by helping women overcome production constraints, would si...

the aim of this paper is to study the impacts of technological progress and efficiency change on the productivity growth of iran agriculture separated by provinces. the period of this study is from 2005-2014. first of all, the impacts of efficiency change and technology change were separated using dea and malmquist model. then, their impacts on productivity growth were studied. it was concluded...

The index is excellent by the Malmquist index as extended to productivity measurement. The index developed here is defined in terms of input cost rather than input quantity distance functions in supply chain. Therefore, we propose productivity change is decomposed into overall efficiency and cost technical change. These decompositions provide a clearer situation of the root sources of supply ch...