Which ecological factors influence the level of intraspecific diversity within post-glacial fishes? A case study using Coregonus and Salvelinus

While it is likely that ecological context is important, the factors that facilitate and maintain variable levels of intraspecific diversity in Salmonidae fishes across environments remain unclear. Using a meta-analysis of sympatric ecotype assemblages from two salmonid genera – Salvelinus and Coregonus – we evaluated the importance of ecological factors determining the number of sympatric ecotypes (i.e., two to seven) and the level of trait divergence between them. We found that ecotype diversity increased with lake depth and surface area in both Coregonus and Salvelinus. Further, diversity in Coregonus increased with latitude, while the number of ecotypes in Salvelinus assemblages was linked to climatic seasonality. In comparing the two genera we found elevated divergence in traits related to ontogeny (i.e., age and body shape) in Salvelinus and gill raker count in Coregonus. Trait divergence in life history traits (i.e., age and body length) in Salvelinus increased with seasonality, ..., , , ## lake\_summary.csv

This dataset contains a summary of geographical variables recorded for the lakes included in the meta-analysis. 'NA' values indicate missing data.

* Lake = name of lake where the assemblage occurs
* Genus = *Salvelinus* or *Coregonus* - genus the ecotypes belong to
* Lacustrine_morphs = number of ecotypes that reside in the lake
* Country = political entity where the lake is located
* Lat = latitude, in decimal degrees
* Lon = longitude, in decimal degrees
* Depth_max = maximum lake depth, in metres
* Area = lake surface area, in metres squared
* Other_source = source for lake information, if not the paper data was extracted from

## morphs.csv

This dataset contains the raw trait data (means, errors, and sample sizes) for ecotypes included in the meta-analysis. 'NA' values indicate missing data.

* Paper_ID = Identifer uniquely associated with the paper data were extracted from
* Lake = name of the lake were the ecotype occurs
* Species = species or species compl...,