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Doctoral Dissertation Research: Evaluating whitebark pine (Pinus albicaulis) resistance and resilience to fire and insect outbreaks

博士论文研究：评估白皮松（Pinus albicaulis）对火灾和昆虫爆发的抵抗力和复原力

基本信息

批准号：
2029775
负责人：
David McWethy
金额：
$ 1.8万
依托单位：
Montana State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2023-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2029775&HistoricalAwards=false
关键词：
Doctoral Dissertation Research Evaluating whitebark

项目摘要

This doctoral dissertation project will investigate how a culturally and ecologically important tree species, whitebark pine (Pinus albicaulis), has physiologically adapted to disturbances such as fire in high-elevation subalpine forests in mountain environments. Wildfire, insect outbreaks and diseases play an important role in creating conditions in which whitebark pine (WBP) forests can persist in high-elevation ecosystems. Subalpine forest tree species have developed different strategies to survive these disturbances including the growth of thick bark to survive fires and resin ducts that expel insects such as mountain pine beetles. This research will evaluate the different strategies used by WBP trees to survive disturbances. The results will provide insights into different growth and defense strategies that may be beneficial to increasing survivorship and promoting WBP establishment and persistence. Better understanding how WBP trees respond to disturbance will provide valuable information for natural resource managers tasked with maintaining WBP stands into the future. Furthermore, this project will support the training of a doctoral student. Fire, insect outbreaks and disease play an important role in the long-term establishment and persistence of WBP forests, however, research is lacking to understand the growth mechanisms that WBP trees use to persist under different histories of disturbance. Our research will assess the influence of wildfire and mountain pine beetle activity on WBP physiology by examining growth (ring-widths) and defense characteristics (duct anatomy and resin chemistry) for over 200 trees at three different high-elevation forest sites. This research will provide important information on the characteristics and conditions under which WBP respond to multiple disturbances that are increasing in subalpine forests. This work is important for restoration efforts to sustain ecologically important WBP forests into the future.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

本博士论文项目将研究如何在文化和生态上重要的树种，白皮松（白皮松），在生理上适应干扰，如火灾在高海拔亚高山森林在山区环境。野火、昆虫爆发和疾病在创造白皮松（WBP）森林在高海拔生态系统中持续存在的条件方面发挥着重要作用。亚高山森林树种已经开发出不同的策略来生存这些干扰，包括厚树皮的生长，以生存火灾和树脂导管驱逐昆虫，如山松甲虫。这项研究将评估WBP树使用的不同策略，以生存干扰。研究结果将为不同的生长和防御策略提供见解，这些策略可能有利于提高生存率，促进WBP的建立和持续。更好地了解WBP树木如何应对干扰，将为负责维护WBP立场的自然资源管理人员提供有价值的信息。此外，该项目将支持培养一名博士生。火灾、虫害和病害在WBP森林的长期建立和持续性中起着重要作用，然而，缺乏研究来了解WBP树木在不同历史干扰下持续存在的生长机制。我们的研究将评估野火和山松甲虫活动对WBP生理的影响，通过检查三个不同的高海拔森林站点的200多棵树的生长（环宽）和防御特征（导管解剖和树脂化学）。这项研究将提供重要的信息的特点和条件下，WBP响应多种干扰，在亚高山森林中增加。这项工作对于未来保持具有生态重要性的WBP森林的恢复工作非常重要。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

期刊论文数量（3）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Whitebark pine (Pinus albicaulis) growth and defense in response to mountain pine beetle outbreaks

白皮松（Pinus albicaulis）的生长和防御以应对山松甲虫爆发

DOI：
10.1016/j.foreco.2019.117736
发表时间：
2020
期刊：
Forest Ecology and Management
影响因子：
3.7
作者：
Kichas, Nickolas E.;Hood, Sharon M.;Pederson, Gregory T.;Everett, Richard G.;McWethy, David B.
通讯作者：
McWethy, David B.

Increased whitebark pine (Pinus albicaulis) growth and defense under a warmer and regionally drier climate

DOI：
10.3389/ffgc.2023.1089138
发表时间：
2023-03
期刊：
影响因子：
0
作者：
N. E. Kichas;G. Pederson;S. Hood;R. Everett;D. McWethy
通讯作者：
N. E. Kichas;G. Pederson;S. Hood;R. Everett;D. McWethy

Growth and defense characteristics of whitebark pine (Pinus albicaulis) and lodgepole pine (Pinus contorta var latifolia) in a high-elevation, disturbance-prone mixed-conifer forest in northwestern Montana, USA

美国蒙大拿州西北部高海拔、易受干扰的混交针叶林中白皮松 (Pinus albicaulis) 和黑松 (Pinus contorta var latifolia) 的生长和防御特性

DOI：
10.1016/j.foreco.2021.119286
发表时间：
2021
期刊：
Forest Ecology and Management
影响因子：
3.7
作者：
Kichas, Nickolas E.;Trowbridge, Amy M.;Raffa, Kenneth F.;Malone, Shealyn C.;Hood, Sharon M.;Everett, Richard G.;McWethy, David B.;Pederson, Gregory T.
通讯作者：
Pederson, Gregory T.