W31
ᮌ᭮ᕝ୰ὶᇦ࠾ࡅࡿ࢟ࢯ࢞࣡ࣇࣘࣘࢫࣜ࢝ᡂࡢⓎ⏕≧ἣࡘ࠸࡚
㏆⸨⦾⏕㸦ឡ▱་⛉Ꮫ㸧Annual fluctuations in the occurrence of the chironomid midge, Hydrobaenus kondoi Saether at the middle reaches of the Kiso River
Shigeo Kondo 1986 ᖺ௨᮶㸪ᮌ᭮ᕝ୰ὶᇦࡢἙཱྀࡼࡾ 27㹩㹫ࡽ 34㹩㹫࠸ࡓࡿᗈ࠸⠊ᅖࢃࡓࡗ࡚ẖᖺ 11 ᭶ ᮎ㡭ࡼࡾ⩣ᖺࡢ 3 ᭶ึࡵࡲ࡛㸪య㛗㸲㹼㸳mm ࡛㯮Ⰽࡢ࢟ࢯ࢞࣡ࣇࣘࣘࢫࣜ࢝ࡀ㸪Ꮨ⠇㢼ࡢࡗ࡚ᕥᓊࡢឡ ▱┴୍ᐑᕷ㸪✄ἑᕷ㣕ᩓࡋ࡚ᵝࠎ࡞ⱞ࡞ࡽࡧ⤒῭ⓗ࡞⿕ᐖࢆࡶࡓࡽࡋ࡚࠸ࡿ㸬ᮏ✀ࡢ㔞Ⓨ⏕ࡘ࠸ ࡚ࡣ㸪ᮌ᭮ᕝሖࡢ⠏㐀ࡶ࡞࠺Ỉ⎔ቃࡢኚࡀࡁ࡞ཎᅉ⪃࠼ࡽࢀ࡚ࡁࡓࡀ㸪୰࡛ࡶὶ㏿ᗂᐦᗘ ᭷ព࡞㈇ࡢ┦㛵ࡀㄆࡵࡽࢀࡓ㸬㸦㏆⸨㸪2001㸧 ᡂࡢⓎ⏕㔞ࡣ㸪ᖺࡼࡗ࡚␗࡞ࡿࡀᩘᖺẖ㔞Ⓨ⏕ࢆ⧞ࡾ㏉ࡋ⌧ᅾ⮳ࡗ࡚࠸ࡿ㸬᭱㏆࡛ࡣ㸪2007 ᖺ ࡽ 2009 ᖺࡅ࡚㔞Ⓨ⏕ࡀグ㘓ࡉࢀ࡚࠸ࡿ㸬Ⓨ⏕㔞ࡢኚࡘ࠸࡚ࡣศ࡞ゎᯒࡀ࡞ࡉࢀ࡚࠸࡞࠸ࡀ㸪 ⛅ᏘࡢฟỈࡼࡿᗏ㉁ࡢ᧠ࡸኟ╀ࡼࡗ࡚ᙧᡂࡉࢀࡓ⧛ࡢぬ㓰⋡ࡀ➨㸯ୡ௦ࡢᗂᐦᗘᙳ㡪ࢆཬࡰࡍࡶ ࡢ᥎ᐹࡉࢀ㸪ࡑࡢᖺࡢᡂࡢⓎ⏕㔞ࢆỴᐃࡍࡿࡶࡢ⪃࠼ࡽࢀࡿ㸬 㐣ཤ 10 ᖺ㛫ࡢᡂࡢⓎ⏕㔞ࡘ࠸࡚⎔ቃせᅉࡢ㛵㐃ࡘ࠸࡚⪃ᐹࡍࡿඹ㸪⛅ࡽጞࡲࡗࡓሖࢤ࣮ ࢺࡢࣥࢲ࣮ࣇ࣮ࣟヨ㦂㐠⏝ࡢຠᯝࡘ࠸࡚⪃࠼ࡿ㸬
W32
ㄶゼ†࠾ࡅࡿࣘࢫࣜ࢝┦ࡢኚ㑄
㸨ᖹᯘබ⏨1, ᐑཎ⿱୍2, ⰼ㔛Ꮥᖾ2 (1ಙᕞᏛ⧄⥔Ꮫ㒊, 2ಙᕞᏛᒣᓅ⛉Ꮫ⥲ྜ◊✲ᡤ) Changes of Chironomid fauna in Lake Suwa*Kimio Hirabayashi, Yuichi Miyabara, Takayuki Hanazato
ㄶゼ†࠾ࡅࡿࣘࢫࣜ࢝㢮ࡢ◊✲ࡣ㸪1930 ᖺ௦ࡽ⌧ᅾ⮳ࡿࡲ࡛㸪†ᗏ࠾ࡅࡿᗂᐦᗘࡸ㸪†ࡽࡢ ᡂⓎ⏕ືែࡀᖺࡈグ㘓ࡉࢀ࡚࠸ࡿ㸬ᡃࡀᅜ࠾࠸࡚ࡣ㸪ࡇࢀ㛗ᮇࢃࡓࡿࣘࢫࣜ࢝㢮ࡢほ ࢹ࣮ ࢱࡀヲ⣽グ㘓࣭✚ࡉࢀ࡚࠸ࡿ†ࡣᩘᑡ࡞࠸㸬2006 ᖺࡢᮏ࠾࠸࡚ࡣ㸪㏆ᖺ㸪⏕≀┦ࡁ࡞ኚ ࡀㄆࡵࡽࢀࡿㄶゼ†࠾࠸࡚㸪㐣ཤࡢࣘࢫࣜ࢝㢮ࡢࢹ࣮ࢱ⌧ᅾࡢࣘࢫࣜ࢝㢮ࡢⓎ⏕ືែࢆẚ㍑᳨࣭ウࡍࡿ ࡇࡼࡾ㸪㏆ᖺࡢ†ࢆྲྀࡾᕳࡃ⎔ቃࡢኚࢆࣘࢫࣜ࢝㢮ࢆᣦᶆሗ࿌ࢆ⾜ࡗࡓ㸬ᮏሗ࿌࠾࠸࡚ࡣ㸪ࡑࡢ ᚋࡢᐃᮇほ ࡢࢹ࣮ࢱ(10 ᪥ 1 ᅇࡢ᥇㞟㢖ᗘ)ࢆ㏣ຍࡋ㸪2011 ᖺ 12 ᭶ࡲ࡛ࡢ⤖ᯝࢆᇶ㸪ㄶゼ†ࡢỈ㉁ࡢ ኚࡑࢀࡶ࡞࠺ࣘࢫࣜ࢝㢮ࡢಶయᩘᐦᗘࡢኚࡘ࠸࡚ሗ࿌ࡍࡿ㸬†Ỉࡢᐩᰤ㣴ࡀ㐍ࢇࡔ 1950㸫 1960ᖺ௦ࡅ࡚ࡣ㸪࣒࢝ࢩࣘࢫࣜ࢝ᗂࡢಶయᩘᐦᗘࡣᛴ㏿ቑຍࡋࡓࡀ㸪ㄶゼ†ὶᇦୗỈ㐨ࡢᩚഛࡀ 㐍ࢇࡔ 1980 ᖺ௦ᚋ༙ࡣ㸪࢜࢜ࣘࢫࣜ࢝㸪࣒࢝ࢩࣘࢫࣜ࢝ᗂᐦᗘࡣῶᑡഴྥ㌿ࡌࡓ㸬ᐩᰤ㣴†ࢆ௦ ⾲ࡍࡿᮏ㸰✀ᗂࡢῶᑡࡣㄶゼ††ᗏ⎔ቃࡀ 1980 ᖺ௦ẚࡁࡃኚࡋࡓࡇࡀ♧၀ࡉࢀࡿ㸬୍᪉㸪1990 ᖺ௦ࡽࣁࣟࣘࢫࣜ࢝㸪ࢡࣟࣘࢫࣜ࢝ࡀἢᓊᇦࡽ㔞Ⓨ⏕ࡋጞࡵࡓ㸬㏆ᖺ㸪ㄶゼ†ἢᓊᇦࡣࢡࣟࣔ ࡞ࡢỿỈ᳜≀ࡸࣄࢩ࡞ࡢᾋⴥ᳜≀࡛そࢃࢀ㸪†ᗏ⎔ቃࡀࡉࡽࡁࡃኚࡋ࡚࠸ࡿ㸬ࡑࢀక࠸㸪ࡇࡇ ᩘᖺ㸪ࣁࣟࣘࢫࣜ࢝ࡢⓎ⏕ᩘࡀῶᑡࡋ㸪ࢡࣟࣘࢫࣜ࢝ࡢⓎ⏕ຍ࠼࡚ࡇࢀࡲ࡛࠶ࡲࡾከࡃ࡞ࡗࡓ㸪࢘ ࢫࣟࣘࢫࣜ࢝ࡸ㸪࢝ࢫࣜࣔࣥࣘࢫࣜ࢝࡞ࡢⓎ⏕ᩘࡀᛴቑࡋ࡚࠸ࡿ㸬
