Five early-phase ammonia fungi (EP fungi) -Amblyosporium botrytis, Ascobolus denudatus, Peziza moravecii, Pseudombrophila petrakii, Coprinopsis phlyctidospora, and Tephrocybe tesquorum, and one late-phase ammonia fungus (LP fungus), Hebeloma vinosophyllumwere co-cultured on malt extract-yeast extract agar media at pH 5.5, 7.0, 8.0, and 9.0. The co-cultures among the earlystage EP fungi Amblyosporium botrytis, Ascobolus denudatus, Peziza moravecii, and Pseudombrophila petrakii, generally did not inhibit or accelerate the reproductive structure formation of the opposed fungi. Among the EP fungi, Am. botrytis, As. denudatus, and Pe. moravecii intermingled with each other. The late-stage EP fungus T. tesquorum inhibited the growth of other EP fungi. Another late-stage EP fungus, C. phlyctidospora, showed ability to invade other EP fungi, but it did not deeply invade into the territories of early-stage EP fungi. The LP fungus H. vinosophyllum tended to accelerate basidioma formation of C. phlyctidospora at pH 5.5 and 9.0. H. vinosophyllum formed the highest numbers of basidomata at pH 5.5. These results show that successive occurrence of ammonia fungi is caused by the interspecifi c interactions among ammonia fungi as well as by the physiological characteristic of each fungus associated with conditions of its inhabiting soils, such as pH and nitrogen concentration.

Five early-phase ammonia fungi (EP fungi) -Amblyosporium botrytis, Ascobolus denudatus, Peziza moravecii, Pseudombrophila petrakii, Coprinopsis phlyctidospora, and Tephrocybe tesquorum, and one late-phase ammonia fungus (LP fungus), Hebeloma vinosophyllumwere co-cultured on malt extract-yeast extract agar media at pH 5.5, 7.0, 8.0, and 9.0. The co-cultures among the earlystage EP fungi Amblyosporium botrytis, Ascobolus denudatus, Peziza moravecii, and Pseudombrophila petrakii, generally did not inhibit or accelerate the reproductive structure formation of the opposed fungi. Among the EP fungi, Am. botrytis, As. denudatus, and Pe. moravecii intermingled with each other. The late-stage EP fungus T. tesquorum inhibited the growth of other EP fungi. Another late-stage EP fungus, C. phlyctidospora, showed ability to invade other EP fungi, but it did not deeply invade into the territories of early-stage EP fungi. The LP fungus H. vinosophyllum tended to accelerate basidioma formation of C. phlyctidospora at pH 5.5 and 9.0. H. vinosophyllum formed the highest numbers of basidomata at pH 5.5. These results show that successive occurrence of ammonia fungi is caused by the interspecifi c interactions among ammonia fungi as well as by the physiological characteristic of each fungus associated with conditions of its inhabiting soils, such as pH and nitrogen concentration.

The Ifugao Rice Terraces (IRT) was declared by United Nations EducationalScientific and Cultural Organization (UNESCO) as a World Heritage Site. It wasknown to the foreigners, particularly the Spaniards in the latter years of 1800sand to the Americans during the early 1900s. Articles and photographs furtherpopularized Ifugao to foreign countries, opening the doors to tourism. Thegovernment of the Philippines formally recognized the Ifugao Rice Terraces in1972 as a national cultural treasure having a high value of world culture. Severalnational and local policies were enacted for the preservation and restoration of theIRT while maintaining it as a tourism destination. However, the implementationof these policies remains a big challenge, calling for a more determined politicalamong the national and local leaders most especially that the IRT is deterioratingdue to man-made and natural factors, which led to the declaration of the IRT asa world heritage in danger.Keywords: Legal Ecology, Ifugao Rice Terraces, policies, World Heritage Site, Tourism,descriptive design, Philippines