Osnova za varstvo biodiverzitete črnomorsko-kazahstanske stepe
Ključne besede:
ekološka mreža, Festucetea vaginatae, Festuco-Brometea, Festuco-Puccinellietea, Helianthemo-Thy‑metea, fitocenološka diverziteta, rastlinska združba, talna makrofavnaPovzetek
V članku so predstavljeni novi pristopi ocenjevanja naravovarstvene vrednosti rastlinskih združb, ki temeljijo na kvantitativnih kriterijih na podlagi podatkovnih baz in ekološko floristične klasifikacije vegetacije porečja reke Don (regija Rostov). Črnomorske in kazahstanske stepe imajo velik potencial za ohranjanje. Analizo biodiverzitete smo podkrepili z opisi rastlinskih združb in kvantitativnimi indikatorji glavnih skupin talnih nevretenčarjev (makrofavna) v porečju Tobol-Turgai (regija Kostanay, Kazahstan). Struktura združb talnih nevretenčarjev je močno povezana z vegetacijo, zato lahko njena ocena omogoča vpogled v stopnjo ohranjenosti oziroma motenosti ekosistemov, ki jih najdemo v stepah ob Črnem morju in v Kazahstanu.
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