Understanding How Lake Populations of Arctic Char are Structured and Function with Special Consideration of the Potential Effects of Climate Change: a Multi-Faceted Approach
Document Type
Article
Journal/Book Title/Conference
Oecologia
Volume
176
Issue
1
Publication Date
2014
Keywords
Lake Populations, Arctic Char, Climate Change
First Page
81
Last Page
94
Abstract
Size dimorphism in fish populations, both its causes and consequences, has been an area of considerable focus; however, uncertainty remains whether size dimorphism is dynamic or stabilizing and about the role of exogenous factors. Here, we explored patterns among empirical vital rates, population structure, abundance and trend, and predicted the effects of climate change on populations of arctic char (Salvelinus alpinus) in two lakes. Both populations cycle dramatically between dominance by small ( ≤ 300 mm) and large ( > 300 mm) char. Apparent survival (Φ) and specific growth rates (SGR) were relatively high (40–96 %; SGR range 0.03–1.5 %) and comparable to those of conspecifics at lower latitudes...
Recommended Citation
Budy, Phaedra E. and Luecke, Chris, "Understanding How Lake Populations of Arctic Char are Structured and Function with Special Consideration of the Potential Effects of Climate Change: a Multi-Faceted Approach" (2014). Watershed Sciences Faculty Publications. Paper 863.
https://digitalcommons.usu.edu/wats_facpub/863
