THE IMPACT OF FIRE ON THE LATE PALEOZOIC EARTH SYSTEM

The impact of fire on the Late Paleozoic Earth System

Analyses of bulk petrographic data indicate that during the Late Paleozoic wildfires were more prevalent than at present.We propose that the development of fire systems through this interval was controlled predominantly by the elevated atmospheric oxygen concentration (p(O2)) that mass balance models predict prevailed.At higher levels of p(O2), inc

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Using morphological traits for identification of Populus nigrastands in Kermanshah and Zanjan provinces of Iran

In order to adopt strategies for conservation and development, it is necessary to estimate the amount and distribution of genetic diversity in existing populations of poplar.In this study, for estimating genetic diversity between and within 12 stands of Populus nigra established at Kermanshah and Zanjan provinces in Iran, morphological traits were

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