RADDUM, G. G.; G. HAGENLUND & G. A. HALVORSEN, 1984.- Effects of lime treatment on the benthos of lake Sondre Boksjo. Institute of Freshwater Research Drottningholm. Report No. 61: 167-176.
ABSTRACT: Lake Sondre (= S.) Boksjo, on the border between Sweden and Norway, was during July-August 1980 limed with 9000 tons of CaCOg. Quantitative and qualitative samples of bottom animals were taken before and after the treatment in Lake S. Boksjo and in the untreated lake, Nordre (= N.) Boksjo. The running water fauna was investigated at one locality downstream of Lake N. Boksjo and at two localities downstream of Lake S. Boksjo. The mayfly Baetis rhodani (Pictet) was absent from the river before liming. After the treatment the species occurred at the upper part of the outlet river of Lake S. Boksjo. Asellus aquaticus (L.) was present in slow-flowing parts of the river before liming. After the treatment the species in creased in density 8—10 times. A. aquaticus was not found in Lake S. Boksjo before liming, but occurred with a few individuals after the treatment. Increased abundance was recorded in the treated lake for the mayflies Leptophlebia spp., oligo-chaetes and chironomids in the depth zone 0.5—5 m. This was probably due to increased food availability for detritivorous animals, caused by the liming. The increased number of species of coleopterans and corixids observed was probably caused by elevated biological activity in general. In the profundal of Lake S. Boksjo a strong decrease in number of species and density of bottom animals was recorded after liming. This is suggested to be caused by precipitation of A1 or other metals.
Informaciones complementarias del administrador:
- Fecha de publicación: 1984
- Autores: Gunnar G. RADDUM; Gøsta HAGENLUND y Godtfred A. HALVORSEN
- URL (http://hdl.handle.net/2077/48736)
- Portada del volumen: [https://coleopterofaunaacuatica.com/wp-content/uploads/2022/11/Report-No-61-1984.jpg]
- Familias de coleópteros citados: DYTISCIDAE (Hyphydrus ovatus; Hygrotus quinquelineatus; Coelambus novemlineatus; Hydroporus palustris; Hydroporus erythrocephalus; Graptodytes pictus; Potamonectes depressus; Platambus maculatus; Agabus sturmi; Ilybius aenescens; Rhantus exsoletus; Hydroporus-larva; Agabus-larva). GYRINIDAE (Gyrinus aeratus; Gyrinus marinus; Gyrinus substriatus; Gyrinus minutus; Gyrinus-larva). CHRYSOMELIDAE (Galerucella)
- Otros taxones: HEMIPTERA CORIXIDAE (Cymatia bonsdorffi; Glaenocorisa propinqua; Hespesrocorixa linnei; Hesperocorixa castanea; Sigara striata; Sigara semistriata; Sigara fossarum; Callicorixa praeusta; Callicorixa wollastoni; Callicorixa producta; Corixidae-ninfas). HEMIPTERA NOTONECTIDAE (Notonecta glauca). HEMIPTERA GERRIDAE (Gerris). MEGALOPTERA SIALIDAE (Sialis lutaria). ODONATA (Coenagrion hastulatum; Leucorrhynia pectoralis; Cordulegaster boltoni; Somatochlora metallica). EPHEMEROPTERA (Heptagenia fuscogrisea; Leptophlebia vespertina; Leptophlebia marginata; Siphlonurus linneanus; Baetis rhodani). PLECOPTERA. TRICHOPTERA. DIPTERA CHIRONOMIDAE (listado de tribus en la tabla 4 de la pág. 174).
