| 英文摘要 |
There were plenty of researches indicated the effects of artificial harbors on coastal marine ecosystem. This study chose four areas with different conditions of coastal habitat in Penghu to investigate the algae, mollusk, and fish. In four areas, investigations of algae were made monthly during March to November, and the total investigation times were 36 times. For mollusk and fish, the investigations were made for every two months during March to September, and frequency was 16 times. The results revealed there were 4 phylum, 39 families, and 96 species in algae. Among this, there were 96 species found in natural coastal habitats, and 18 species in artificial harbors. Besides, there were 21 families, 35 genus, and 65 species in mollusk. Among this, there were 20 families, 31 genuses, and 55 species found in natural coastal habitats, and 21 families, 27 genus, 42 species. There were 8 orders, 29 families, 36 genus, and 46 species in fish. Among this, there were 5 orders, 21 families, 28 genus, and 34 species found in natural coastal habitats, and 6 orders, 17 families, 17 genus, and 21 species found in artificial habitats. There were differences between the amount of species appeared in every areas. Furthermore, the species appeared in natural coastal habitats was more than the amount found in artificial harbors, which indicated that artificial environment had the influence on species. In addition, the continued cold weather in Penghu this February caused great deal of death. After comparing the results of these two years, we found the amount of species reduced. However, it resulted from the weather condition instead of the habitats. In the recent investigation, the data revealed the amount of species was increasing gradually. Therefore, the original biota and ecological balance had to be preserved in order to maintain the habitats’ condition, and which would help the ecosystem to reach a new balance. |