Data for: Climate warming and projected loss of thermal habitat volume in lake populations of brook trout

We applied an ensemble of climate warming models and the seasonal temperature profile model for lakes (STM) to assess changes in brook trout thermal habitat volume (THV) among lakes (N=100) within a large, protected area under two climate warming scenarios, RCP 4.5 and RCP 8.5. Brook trout thermal habitat was defined as 9-17°C. Climate warming projections for the balance of this century, regardless of RCP category, will result in the loss of brook trout habitat in lakes that range widely in size. THV loss will be most extensive in lakes that are relatively shallow given their surface area. By 2071-2100 under RCP 4.5, the 90th percentile of THV loss = 31% vs. 63% under RCP 8.5. By the century's end under RCP 8.5, the protected area landscape will be a matrix of lakes with some serving as climate refugia (with reduced THV) and others having severe reductions in THV (>90th percentile THV loss)., Lake morphology data for Algonquin Park (area, shoreline length, maximum and mean lake depth) were used in the seasonal temperature profile model for lakes (STM) to evaluate how climate warming under the RCP 4.5 and RCP 8.5 scenarios reduces brook trout thermal habitat volume. An ensemble of climate models was used as input for the STM and summaries of effects on lake thermal structure are provided in 30-year periods: 1981-2010, 2011- 2040, 2041-2070, and 2071-2100. The input data are provided here for each of these periods. The Github source for the STM is provided in the article. Additional supplementary data and maps are provided as a supplement to the published article., The seasonal temperature profile model for lakes (STM) was used to run this analysis. Model download sites and publications evaluating the model performance are described in the article. The distribution of changes in brook trout thermal habitat volume, relative to baseline, was modeled using general extreme value models to capture the extending right tail of each distribution in each time period. The R package fisdistPLUS was used for fitting the general extreme value distribution., # Data for: Climate warming and projected loss of thermal habitat volume in lake populations of brook trout

The tables include a list of input variables into the STM model used to evaluate brook trout thermal habitat volume. See the published article for model details, the source for downloading, and a description of the lake thermal structure illustrated for an example lake = Scott Lake in Algonquin Park.

## Description of the data and file structure.

#### Tables (\*.csv) included here contain the following information:

1. Lake_Data_Brook_Trout_THV: The list of lakes in Algonquin Park included in evaluating the loss of brook trout thermal habitat volume (THV) using the seasonal temperature profile model (STM). Physical parameters such as perimeter, surface area, mean depth and max depth are lake morphometry variables used in STM. Lakes are mapped in Figure 1. Lake data were used in determining relative shallow vs deep lakes given their surface area in Figure 2.

2. Secchi_data_B...