The effect of inter-and intraspecific competition on individual and population niche widths – a four-decade study on two interacting salmonids

Sebastian Prati, Eirik Henriksen, Aslak Smalås, Rune Knudsen, Anders Klemetsen, Javier Sánchez-Hernández & Amundsen Per-Arne
Competition is assumed to shape niche widths, affecting species survival and coexistence. Expectedly, high interspecific competition will reduce population niche widths, whereas high intraspecific competition will do the opposite. Here we test in situ how intra- and interspecific competition affects trophic resource use and the individual and population niche widths of two lacustrine fish species, Arctic charr and brown trout, covering a 40 year study period with highly contrasting competitive impacts prior to and following...
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1 download reported since publication in 2021.

These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?