Table 1 The US papers from 2005 to 2018 chosen for our literature review that measured and discussed the effect of distance to seed source on tree regeneration following wildfires. Papers, region, signficant relationship, and distance are described. A plus sign (+) indicates a positive relationship between distance to seed source and tree regeneration, a minus sign (−) indicates a negative relationship, and a zero (0) indicates no relationship. The major findings describe the distance at which tree regeneration begins to decline, and the distance beyond which no regeneration was detected in parentheses, if identified in individual papers. All distances are in meters. In some cases, a distance was not specified, although a significant relationship was detected. Additionally in some cases, different metrics or descriptions were used and are included here
From: Tree regeneration following wildfires in the western US: a review
Study | US Region | Relationship between distance of seed source to seedling density | Major findings |
|---|---|---|---|
Bonnet et al. 2005 | Black Hills, South Dakota | − | 50 m |
Lentile et al. 2005 | Black Hills, South Dakota | − | 30 m |
Shatford et al. 2007 | Pacific Northwest | 0 | No difference detected between 50 m and 400 m from edge |
Tepley et al. 2017 | Pacific Northwest | − | Measured “propagule pressure:” the proportion of area within a 400 m radius circle (50 ha) with living trees |
Collins and Roller 2013 | Pacific Southwest | 0 | No difference detected |
Ritchie and Knapp 2014 | Pacific Southwest | − | 60 m |
Welch et al. 2016 | Pacific Southwest | − | 40 m |
Haire and McGarigal 2010 | Southwest | − | 150 to 200 m |
Owen et al. 2017 | Southwest | − | Distance not specified |
Haffey et al. 2018 | Southwest | − | 150 m (225 m) |
Coop and Schoettle 2009 | Southern Rocky Mountains | − | Negative relationship but seedlings present at all sites |
Coop et al. 2010 | Southern Rocky Mountains | − | 50 to 100 m |
Rother and Veblen 2016 | Southern Rocky Mountains | − | 50 |
Chambers et al. 2016 | Southern Rocky Mountains | − | 50 to 100 m |
Ziegler et al. 2017 | Southern Rocky Mountains | − | Distance not specified |
Malone et al. 2018 | Southern Rocky Mountains | − | 30 m |
Donato et al. 2016 | Northern Rocky Mountains | − and + | 100 m for dry forests; higher densities of P. contorta at farther distances |
Harvey et al. 2016 | Northern Rocky Mountains | − | 150 to 330 m |
Kemp et al. 2016 | Northern Rocky Mountains | − | 95 m |
Leirfallom et al. 2015 | Northern Rocky Mountains | − | Negative relationship but seedlings present at all sites |
Urza and Sibold 2017 | Northern Rocky Mountains | − | >100 m |
Stevens-Rumann et al. 2015 | Northern Rocky Mountains | − | Distance not specified |
Stevens-Rumann and Morgan 2016 | Northern Rocky Mountains | − | Distance not specified |
Stevens-Rumann et al. 2018 | Northern Rocky Mountains | − | 200 m |
Turner et al. 2004 | Northern Rocky Mountains | − | “Distance to unburned forest was significant but explained only 3% … of variation” |
Turner et al. 2016 | Northern Rocky Mountains | 0 | No difference detected |