Náttúrufræðingurinn

Ukioqatigiit

Náttúrufræðingurinn - 1975, Qupperneq 10

Náttúrufræðingurinn - 1975, Qupperneq 10
20/8 APATANIA ZONELLA POTOMOPHYLAX CINCULATUS •) Dagsttning/Date Staður/ Locality pH 23/8 23/8 6.9 6.3-6.6 5.8-6.7 28/4 14/5 29/4 6 5/9 7.3-7.8 6.7 7.7-8.6 17/4 22/6 & 23/1 - 10/8 27/12 7.3 8.5-9.1 7.6-8.3 21/5 21/5 21/5 21/5 6.8 7.2 6.7 6.9 Leiðni v/25°C Conductivity at 44 53 59 79 87 92 99 101 214 40 39 40 53 25°C (iimho) pH tvið/ pH range Leiðniavið v/25°C 25 - 298 39 - 153 Conductivity range at 25 C (jimho) c) Selta/ Salinity (°/oo) Lón við Syðralón. 20/6/74 _ , 2 A lagoon at 66013’N, 15°22'W ‘ LárvaSall. 16/8/74 0.9 A lagoon at 64057'N, 23°25'W Súgandafjarðarbotn. 21/8/74 1,6 A lagoon at 66°05'N, 23°22'W Öaaáróa Patrekafirði um atóratraumaflóð. 23/8/74 17,7 An estuary at 65°32'N, 23°47'W durlng high sprlng tide 4. mynd. a) Efnasamsetning nokkurra straumvatna, sem lirfur Apatania zonella Zetterstedt og Potamophylax cingulatus (Stephens) lifa í. Aðaljónir eru táknað- ar sem lilutfall af jónum alls. Sýnin vou tekin 1974, nema úr Varmá hjá Hvera- gerði, þar er sýnt meðaltal sýna, sem voru tekin mánaðarlega 1973 og birtust í skýrslu eftir Sigurjón Rist (1974). b) Sýrustigs- (pH) og rafleiðnisvið straum- vatna, sem áðurnefndar tegundir hafa fundizt í. c) Selta nokkurra ísaltra vatna, sem tegundirnar hafa fundizt í. a) Chemical composition of water of a few slreams where Apatania zonella Zeltersledl and Potamophylax cingulatus (Stephens) occur. Major ions expressed as percentage of total ions. Water samples were talien in 1974, except in "Varmá hjá Hveragerði”, which is a mean of samples taken every month during 1973 and was published in Rist (1974). b) pH and conductivily range of streams where the two above species occur. c) Salinity of a few brackish waters where the species were found.
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