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The paper analyses the spatial concentration of economic activities/sectors in the Republic of Croatia in the period from 2009 to 2016. For this purpose, absolute, and relative spatial concentrations-Hirfindahl- Hirschman's index and variants of the Gini coefficient of concentration (Gini coefficient, spatial Gini coefficient and Gini location coefficient)-were applied. As a basis for their calculation, data on the number of employees per county are used. The results show that the most spatially-concentrated activities are those of the tertiary sector, in particular activities related to information and communication. Some activities are highly concentrated in the City of Zagreb, while others are highly concentrated in certain coastal counties. Agriculture, forestry, and fishing have the most even spatial arrangement. Most of the researched activities did not show a significant change in degree of spatial concentration between 2009 and 2016. [ABSTRACT FROM AUTHOR]

The paper deals with the study of changes in the composition according to age of the population of Croatia over three decades (1981 - 2011). Consideration is given to the causes and characteristics of demographic ageing and they are compared with European countries. The degree of population old age is analysed in detail and spatial differentiation is made of the basic features of that process (to the level of the local district/town); emphasis is placed on the current situation (in keeping with 2011 Census data). A projection of the process in question up until 2031 is submitted (the trend in the total number of the population and changes in its composition according to age group and degree of ageing). One of the chapters analyses the consequences of the ageing of the population and endeavours to answer the question of how to mitigate such consequences and to impede this destructive process. It is concluded that far reaching solutions should be sought primarily in increasing fertility, by which gradual rejuvenation of the population's age composition could be stimulated. The second group of measures relates to immigration, and the third to increasing the employment rate of young people in order to halt their mass emigration. [ABSTRACT FROM AUTHOR]