the study of organisms, both flora and fauna, in relation to their environments. Five primary ecological regions may be distinguished in Persia, each with a characteristic combination of features: the Caspian lowlands, the Alborz system and mountain ranges in Khorasan, the Persian plateau, the Zagros system with the Makrān mountain ranges, and the lowlands along the Persian Gulf.
(nahang, Baluchi gandū), Crocodylus palustris, the marsh crocodile. It inhabits fresh-water marshes, pools, and rivers, and probably the only suitable crocodile habitat in Persian Baluchistan is along the Sarbāz river. The present intermittent distribution of this species in Pakistan and Persian Baluchistan represents a fragmentation of a once more continuous range during moister climatic regimes in the recent past.
Fascicle 2 of Volume XVI
The most recent fascicle in the print edition of Encyclopædia Iranica appeared during the second quarter of 2013. This fascicle continues the development of letter “K” topics. It begins with the ancient KASSITES and ends with the beginning of titles with initial Ke-. Especially notable in this fascicle is the comprehensive survey of the Kayanid dynasty in the traditional history of Iran, as recorded in our sources both pre-Islamic and Islamic. This entry by Prof. P. O. Skjærvø, under the title KAYĀNIĀN, is now available at this website, along with all other entries in the fascicle.
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