Πλοήγηση ανά Θέμα "WORLD"
Αποτελέσματα 1-4 από 4
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Co-existence of different host-adapted forms of the Myzus persicae group (Hemiptera : Aphididae) in southern Italy
(2003)Multivariate morphometric analysis (method of canonical variates) was used to compare 38 parthenogenetic lineages and three field collections of aphids of the Myzus persicae (Sulzer) group sampled on peach and tobacco in ... -
Corruption and Economic Efficiency: Panel Data Evidence
(2010)This paper investigates empirically the effect of corruption on countries' economic efficiency. By using a sample of 79 countries for the time period 2000-2006 the paper applies DEA window analysis and econometric panel ... -
Fishing down, fishing through and fishing up: fundamental process versus technical details
(2011)Fishing through, fishing up (i.e. the observation that mean trophic levels [MTLs] of catches are increasing with time) and the question of agreement between MTL from catches and surveys have been used to question fishing ...