| Tekijä (t): | Romakkaniemi, Atso Jounela, Pekka Van der Meer, Olli |
|---|---|
| Aineiston nimi: | The impact of groundwater upwelling on the Tornionjoki trout : project report |
| Verkko-osoite: | https://jukuri.luke.fi/handle/10024/546375 |
| Aineistolaji: | kirja |
| Asiasanat: | elinympäristö - habitaatti, joki - joet, pohjavesi, taimen, Tornionjoki, Tornionjokilaakso |
| Kustantaja: | RKTL |
| Painopaikka: | Helsinki |
| Vuosi: | 2020 |
| Sivumäärä: | 30 |
| ISBN/ISSN: | 978-952-380-057-1 ; 2342-7647 |
| Lehti/sarja ym.: | Luonnonvara- ja biotalouden tutkimus / Luke Luonnonvarakeskus = Natural resources and bioeconomy studies |
| Lisätietoa: | nro 70/2020 The effects of groundwater upwelling on the occurrence of fish speciestrout and sculpins were studied in the tributary streams Valkeajoki and Kuerjoki of the River Äkäsjoki, northern Finland. Four main study areas with altogether six study sites were selected for data collection. Within these sites, altogether 81 sampling lines across stream channel were studied, comprising of 558 sampling points (1 sqm each). Habitat characteristics known to affect trout occurrence were mapped, and the presence of groundwater was identified/mapped from the existing TIR remote sensing data and by water and sediment temperature measurements. The chosen rivers are generally strongly fed by groundwater, which together with cool weather kept river water temperature low. The presence/absence data of fish species was collected by point sampling with a standard electrofishing equipment. Altogether 348 fish were caught, out of which 285 were trout parr and 63 were sculpins... Luonnonvara- ja biotalouden tutkimussarjan julkaisut ilmestymisjärjestyksessä: https://www.suomenkalakirjasto.fi/luke-luonnonvara-ja-biotalouden-tutkimus/ Luonnonvara- ja biotalouden tutkimussarjan julkaisut tietokannassa: https://www.suomenkalakirjasto.fi/kalakirjasto/haku.php?lang=fi&publication=Luonnonvara-+ja+biotalouden+tutkimus+%2F+Luke+Luonnonvarakeskus ISBN 978-952-380-057-1 (Print) ISBN 978-952-380-058-8 (Online) ISSN 2342-7647 (Print) ISSN 2342-7639 (Online) URN http://urn.fi/URN:ISBN:978-952-380-058-8 |
| Sijainti: | F-Luke: Luonnonvara- ja biotalouden tutkimus (F 2/6) |