A life table for powan, Coregonus lavaretus(L.) in Loch Lomond, Scotland: A basis for conservation strategy

Autor:	D. B. C. Scott, E. A. R. Brown, N. Finnigan
Rok vydání:	1991
Předmět:	education.field_of_study Ecology food.dish biology Population First year of life Aquatic Science Fish measurement Fecundity biology.organism_classification Fishery food Coregonus lavaretus Table (landform) education Gymnocephalus Nature and Landscape Conservation
Zdroj:	Aquatic Conservation: Marine and Freshwater Ecosystems. 1:183-187
ISSN:	1099-0755 1052-7613
DOI:	10.1002/aqc.3270010207
Popis:	1. A static life table for Loch Lomond powan, Coregonus lavaretus (L.) has been constructed from data obtained during 1980–1988, as a basis for monitoring any changes in the population which may ensue from exploitation of the Loch. 2. Mortality was 99.95% during the first year of life, and adult mortality highest at 5–6 years. 3. Average fecundity was 20.7 ova mm−1 fork length. 4. Mortality and fecundity have not changed in 25 years. 5. It is not yet possible to assess the effect of the recent introduction of ruffe, Gymnocephalus cernuus (L.) into Loch Lomond, but their effect on recruitment into the vulnerable 0–1 year-class may be critical.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cc38704a872c6caec858593d1424ce94 https://doi.org/10.1002/aqc.3270010207 Zobrazit plný text záznamu Plný text