A regionalizmus három generációja Latin-Amerikában (Three generations of regionalism in Latin America)

A szerző a Budapesti Corvinus Egyetem Nemzetközi Tanulmányok Intézetének tanársegéde. Tanulmánya a regionalizmus jelenségét vizsgálja Latin-Amerikában, célja az egyes generációk létrejöttének és legfőbb jellemzőinek felvázolása, illetve a jelenleg működő latin-amerikai integrációs tömörülések eredményeinek és legfontosabb kihívásainak vizsgálata. A cikk rávilágít a latin-amerikai alrégiók mentén megalakult csoportok belső integrációja, illetve a más régiókkal való interregionális törekvések közötti szoros összefüggésre, azok kölcsönhatására. A szerző éppen ezért a regionális tömörülések eredményei mellett kitér az egyes latin-amerikai alrégiók más – fejlett és fejlődő világbeli – régiókkal kiépített kapcsolataira is. ______ The paper examines initiatives aimed at regional integration in Latin-America in order to identify the main characteristics of the three generations of regionalism on the continent, as well as show what the main results and challenges are of today's regional organizations. The paper demonstrates that there is an interesting link between the level of integration within the various regional groupings and their interregional contacts with other regions. The author also examines the relations of Latin-American sub-regions with other regions of the world, both developed and developing.

Seasonal change of oribatid mite communities (Acari, Oribatida) in three different types of microhabitats in an oak forest

Oribatid mites are one of the most abundant groups of the ground-dwelling mesofauna. They can be found in almost every terrestrial habitat all over the world and they are characterized by great species richness and great number of individuals. In spite of that not enough is known about their behaviour on community level and their spatial and temporal pattern in different habitats of the world. In our present study the seasonal behaviour of oribatid mite communities was analysed in three types of microhabitats in a temperate deciduous forest: in leaf litter, soil and moss. Samples were collected at a given site in a year and a half and the oribatid mite communities living there were studied on genus level along with the changes of meteorological factors characteristic of the area. The results show that corresponding to similar previous researches, the communities in our study do not have a seasonally changing, returning pattern either. Based on this, we can conclude that climatic differences and differences in other seasonally changing factors between the seasons do not have a significant role in the annual change of communities. Besides that we discovered that the communities of the three microhabitats are not completely the same. It is the oribatid mite community of the moss which differs mostly from communities in the leaf litter and in the soil. Our study calls attention among others to the fact that compositional changes of the oribatid mite communities living all over the world and their causes are unclear to date.