Patterns of density-dependent growth in juvenile stream- dwelling salmonids

Individual growth and its implications for the recruitment dynamics of streamdwelling marble trout (Salmo marmoratus)

The role of density-dependent individual growth in the recruitment dynamics of fish populations has rarely been analysed in a quantitative framework. Variations of mean size of juveniles in response to changes in population densities have frequently been observed in salmonids and it has been shown that body-size differences at the juvenile stage can persist through the sub-adult and adult stage...

The effects of density on territory size and population regulation in juvenile rainbow trout, Oncorhynchus mykiss

The effects of density on territory size and population regulation in juvenile rainbow trout, Oncorhynchus mykiss Jacquelyn Lee Ann Wood Despite a wealth of research on territoriality and population regulation in stream dwelling salmonids, most studies have focused on manipulations of food abundance alone, or else have simultaneously manipulated space and food abundance, but used population den...

Interactions between body mass and water temperature cause energetic bottlenecks in juvenile steelhead

Across taxa, it is generally accepted that there are fitness advantages to rapid growth early in life. For stream-dwelling salmonids, however, high temperatures and associated energetic costs during the summer growing season might offset or even prevent the competitive advantage of large body size. Our overall objective was to understand the relative importance of factors that can cause variati...

Analysis of Movement Patterns of Stream-dwelling Salmonids in Response to Three Survey Methods

Modes of Competition: Adding and Removing Brown Trout in the Wild to Understand the Mechanisms of Density-Dependence

While the prevalence of density-dependence is well-established in population ecology, few field studies have investigated its underlying mechanisms and their relative population-level importance. Here, we address these issues, and more specifically, how differences in body-size influence population regulation. For this purpose, two experiments were performed in a small coastal stream on the Swe...