排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Jane A. Godiksen Martin-A. Svenning J. Brian Dempson Maare Marttila Andrea Storm-Suke Michael Power 《Hydrobiologia》2010,650(1):67-77
A species-specific fractionation equation for Arctic charr (Salvelinus alpinus (L.)) was developed experimentally for use in ecological studies of temperature-driven phenologies for the species. Juvenile
Arctic charr were reared in controlled conditions at different temperatures (2–14°C), with three replicates of each temperature.
Otoliths from the fish and water samples from the chambers were analysed for oxygen isotope composition and used to estimate
temperature-dependent fractionation equations relating the isotopic ratio to rearing temperature. A linear and a second order
polynomial relationship were estimated and validated using comparable Arctic charr data from another study. Temperatures predicted
using the polynomial equation were not significantly different from recorded experimental temperatures, whereas with the linear
equation there were significant differences between the predicted and measured temperatures. The polynomial equation also
showed the least bias as measured by mean predictive error. Statistical comparisons of the polynomial fractionation equation
to a similarly estimated equation for brook charr (Salvelinus fontinalis (Mitchill)) indicated significant differences. Results imply the need for species-specific fractionation equations, even
for closely related fish. Results further suggest the polynomial form of the fractionation equation will facilitate more accurate
characterisation of water temperatures suitable for use in ecological studies of temperature-driven phenologies of Arctic
charr. 相似文献
2.
Marttila Maare Louhi Pauliina Huusko Ari Vehanen Teppo Mäki-Petäys Aki Erkinaro Jaakko Syrjänen Jukka Tapani Muotka Timo 《Reviews in Fish Biology and Fisheries》2019,29(3):513-527
Reviews in Fish Biology and Fisheries - River restoration offers the potential to enhance biological integrity, often measured as fish population changes. We used a meta-analytical approach to... 相似文献
1