NUTRITIONAL ECOLOGY OF THE CRETAN AGRIMI (CAPRA AEGAGRUS CRETENSIS), EUROPEAN MOUFLON (OVIS ORIENTALIS MUSIMON) AND RABBIT (ORYCTOLAGUS CUNICULUS) AND EFFECTSOF GRAZING ON ISLAND ECOSYSTEMS
Abstract
A STUDY CONDUCTED ON FOUR ISLANDS WITH DIFFERENT GRAZING HISTORY IN THE GULF OFATALANDI (N.EUBOEAN GULF). ALSO IT IS EVALUATED THE EFFECTS OF GRAZING ON ISLAND ECOSYSTEMS. THROUGHOUT THE YEAR THE THREE ANIMAL SPECIES PREFERRED MAINLY SHRUBS. THEY ALSO CONSUMED PHRYGANA AND HERBAGE. WHEN HERBAGE WAS ABUNDANT, MOUFLON AND RABBITS PREFERRED STRONGLY IT. ON ATALANTI ISLAND EXIST 1840 RABBITS WHICH COMPETE FOR FOOD WITH THE OTHER SPECIES. THE SAME IS TRUTH FOR MOUFLON IN RELATION TO THE CRETAN AGRIMI. HERBIVORES' GRAZING NEGATIVELY THE COMPOSITION, COVER AND PRODUCTIVITY OF THE VEGETATION AND STRUCTURE AND FERTILITY OF THE SOIL IF HERBIVORES' POPULATION IS HIGHER THAN THE CARRYING CAPACITY OF EACH ISLAND. IT IS PROPOSED THE EXTERMINATION OF RABBITS FROM ATALANDI ISLAND AND CONSERVATION ON IT ONLY AGRIMI BUT NO MORE THAN 180 INDIVIDUALS.
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