Proposition of Dragonfly’s Appropriate Survey Period Inhabited in Temperate Zone
습지의존종이면서 습지생태계의 질적 변화를 파악할 수 있는 지표종인 잠자리목의 조사 시기를 제안하고자 산청군내 7개소의 인공습지를 대상으로 2015년 5월부터 2016년 10월까지 2주 간격으로 총 29회에 걸쳐 잠자리 종과 개체수를 조사하였다. 1~3월과 11월, 12월에는 잠자리목이 관찰되지 않아 조사 시기에서 제외하였다. 군집을 분류한 결과, 4~6월, 6~8월, 9~10월이 각각 다른 군으로 분류되었으나 4월, 6월, 10월의 경우 강우, 기온 등의 영향으로 연도별 변화가 예상되어 조사 시기를 대표할 수 없었다. 따라서 온대 지역의 잠자리 조사 시기에는 5월, 7~8월, 9월이 필수적으로 포함되어야 할 것으로 판단되었다. 종의 변화는 봄철에는 참실잠자리, 등검은실잠자리가, 여름철에는 고추잠자리, 등검 은실잠자리, 먹줄왕잠자리, 배치레잠자리, 큰밀잠자리 등이, 가을에는 큰청실잠자리, 흰얼굴좀잠자리 등의 출현빈도가 높아지는 경향을 나타내었다.
This study was identified the survey period and emergence of main species of dragonfly species, an indicator species that can identify the characteristics of wetland ecosystem. I surveyed the species and population of dragonflies once every two weeks from May 2015 to October 2016(29 times). From January to March, November and December were excluded from the cluster classification because the dragonflies were not observed. In April and October, the species was emerged but it was not suitable because it could not represent the time of the seasons. When we divide by month, it was able to judge from April to June as spring. Except the May, there were some changes due to rainfall and temperature, and sometimes June was included in the summer season. June, July and August correspond to summer, and September and October fall in Autumn. In June and October, the change was expected due to the effects of temperature and so it was judged as a partial fit. Looking at the change of the species, Coenagrion johansson and Paracercion calamorum were increase at the spring, and then Crocothemis servilia mariannae, Paracercion calamorum, Anax nigrofasciatus, Lyriothemis pachygastra, Orthetrum melania were abruptly enlarge in summer. At last, Sympetrum kunckeli, Lestes temporaris tended to be higher in Autumn.