Kyle Rodman

Kyle Rodman and Tom Veblen's work is featured in the Rocky Mountain PBS babyֱ��app Experience episode "Forests of Change"

Anonymous — Fri, 31 Jan 2020 21:31:28 +0000

Kyle Rodman and Tom Veblen's work is featured in the Rocky Mountain PBS babyֱ��app Experience episode "Forests of Change" Anonymous (not verified) Fri, 01/31/2020 - 14:31

Humans have had a relationship with forests for eons. But today, babyֱ��app’s forests are changing, potentially altering this intrinsic connection. Follow scientists and historians as they work to understand this transformation. Decipher tree rings, analyze aerial imagery, and learn of babyֱ��app’s long history to unroot the causes and consequences of babyֱ��app’s changing forests.

Watch the episode, "Forests of Change", on Rocky Mountain PBS babyֱ��app Experience. It first aired Jan 9, 2020. Geography professor Tom Veblen and alum Dr. Kyle Rodman are featured throughout.

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Kyle Rodman: Seed availability hampers forest recovery after wildfires

Anonymous — Thu, 03 Oct 2019 00:59:53 +0000

Kyle Rodman: Seed availability hampers forest recovery after wildfires Anonymous (not verified) Wed, 10/02/2019 - 18:59

A lack of tree seedling establishment following recent wildfires represents a crucial bottleneck limiting coniferous forest recovery in the western U.S., new CU Boulder-led research finds.

The study, which was recently published in the journal Ecological Applications, examined burn-affected ponderosa pine and Douglas-fir stands in southern babyֱ��app and northern New Mexico to better understand variation in forest responses. The researchers measured post-burn seedling (i.e. juvenile trees that established following fires) densities after fires dating from 1988-2010 and found that 42% of ponderosa pine sites and 69% of Douglas-fir sites fell below the lowest reported historical tree densities in those areas.

The findings suggest that some burned areas are more vulnerable to forest loss than others. An absence of viable coniferous seeds, particularly near the interior of severe burn zones, can drastically hamper a forest’s ability to recover to its prior state. In addition, warm and dry conditions, such as those found at low elevations and on south-facing slopes, impede new tree seedling establishment.

“Seed availability is an important and underrated element of forest health and resilience,” said Kyle Rodman, lead author of the study and a former doctoral student in CU Boulder’s Department of Geography. “These areas can only come back after a fire when live trees can disperse seed into the area that’s been burned, and most trees do not produce seed every year.”

Still, Rodman says, the variability of post-fire seed production is only now coming into focus for researchers.

“Getting that kind of data is time consuming and requires a lot of different information,” he said.

The researchers selected 15 recent wildfires that occurred in coniferous forest sites in southern babyֱ��app and northern New Mexico. They conducted field surveys to measure seedling densities as well as evidence of recent seed cone production from the scars left on tree branches, then cross-referenced the seedling density data with numerous other datasets including climate records and distance to potential cone-producing seed trees.

The scientists also used a novel method of cutting and dating tree seedlings to determine the year of establishment, allowing for a more accurate assessment of the climatic conditions that are beneficial to post-fire forest recovery.

While the results varied by site, the study generally found that both ponderosa pine and Douglas-fir forests struggled to recover, with large percentages falling below their historical averages. Warm, dry forest sites with southern exposure were especially vulnerable.

“A significant percentage of the burned area hasn’t recovered to even low densities, especially in these warmer areas,” Rodman said.

The findings suggest that spatial proximity to surviving trees (and thus, greater seed availability) acts as a kind of first filter for forest recovery, with unfavorable climate variables acting as a second chokepoint.

“These results reinforce findings from many similar recent studies across the western U.S. showing that in dry forests such as ponderosa pine stands following recent severe fires, tree regeneration is being limited both by reduced availability of seed due to fewer surviving trees and by warmer-drier climatic conditions unfavorable for tree seedling establishment,” said Distinguished Professor of Geography Thomas Veblen, a co-author of the study. “These low elevation dry forests occurring near the edge of their climatic tolerance appear to be prone to conversion to non-forest vegetation types following wildfires.”

The research also suggests that in order to maximize the chances of forest regeneration, land managers in the western U.S. should concentrate reforestation efforts in cool, wet areas where seedlings are most likely to thrive after a fire.

The researchers plan to continue honing their models to incorporate future climate projections in order to evaluate a range of possible outcomes for forests under continued climate warming and increases in wildfire activity.

Additional co-authors include Teresa Chapman of CU Boulder; Monica Rother of the University of North Carolina; and Andreas Wion and Miranda Redmond of babyֱ��app State University. The Australian Research Council, the Joint Fire Science Program, the John Marr Ecology Fund and the babyֱ��app Mountain Club Foundation provided funding for the research.

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Jennifer Dinaburg Memorial Research Award for PhD Students

Anonymous — Wed, 10 May 2017 19:25:43 +0000

Jennifer Dinaburg Memorial Research Award for PhD Students Anonymous (not verified) Wed, 05/10/2017 - 13:25 Jessica DiCarlo , Zhaxi Duojie , Gretchen Lang , Kyle Rodman

The Department of Geography is pleased to announce that Jessica DiCarlo, Zhaxi Duojie, Gretchen Lang and Kyle Rodman have received the Jennifer Dinaburg Memorial Research Award for PhD students for Spring 2017. This award assists Doctoral students with funding for summer research projects.

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Seven Geography Graduate Students Receive Beverly Sears Research Grants

Anonymous — Mon, 27 Mar 2017 18:14:55 +0000

Seven Geography Graduate Students Receive Beverly Sears Research Grants Anonymous (not verified) Mon, 03/27/2017 - 12:14 Robert (Robbie) Andrus , Joel Correia , Angela Cunningham , Zhaxi Duojie , Mehran Ghandehari , Eric Lovell , Kyle Rodman

Robert Andrus, Joel Correia, Angela Cunningham, Zhaxi Duojie, Mehran Ghandehari, Eric Lovell and Kyle Rodman have each received a Beverly Sears Research Grant. These grants provide funds to assist the student with their PhD research.

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Beverly Sears Grants awarded to 6 Geography Students

Anonymous — Thu, 10 Mar 2016 20:36:26 +0000

Beverly Sears Grants awarded to 6 Geography Students Anonymous (not verified) Thu, 03/10/2016 - 13:36

Beverly Sears Graduate Student Research Grants for 2016/2017 have been awarded to Brendan Buzzard, Katie Clifford, Sierra Gladfelter, Daniela Marini, Galen Murton and Kyle Rodman. These grants are competitive awards sponsored by the Graduate School that support the research, scholarship and creative work of graduate students from all departments. All funding is provided by private donations

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