Academic Journal
Facilitation Differentially Affects Competitive Responses of Aspen and Subalpine Fir Through Stages of Stand Development
| العنوان: | Facilitation Differentially Affects Competitive Responses of Aspen and Subalpine Fir Through Stages of Stand Development |
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| المؤلفون: | Molinari, Rebecca Lee, Bekker, Matthew F., St. Clair, Benjamin D., Bartholomew, Jason, DeRose, R. Justin, Kitchen, Stanley G., St. Clair, Samuel B. |
| المساهمون: | Ecological Society of America |
| المصدر: | Aspen Bibliography |
| بيانات النشر: | Hosted by Utah State University Libraries |
| سنة النشر: | 2022 |
| المجموعة: | Utah State University: DigitalCommons@USU |
| مصطلحات موضوعية: | Abies lasiocarpa, basal area increment, conifer encroachment, dendrochronology, fire ecology, fire exclusion, Populus tremuloides, quaking aspen, subalpine fir, Agriculture, Ecology and Evolutionary Biology, Forest Sciences, Genetics and Genomics, Plant Sciences |
| الوصف: | Spatial interactions between trees influence forest community succession. The objective of this study was to investigate how shifts in forest composition and proximity between tree species affect stand development over time in mixed forest systems. At six locations across the Fishlake National Forest, Utah, USA, in stands where facilitation has been documented previously, tree-ring samples were collected from aspen and subalpine fir trees. Basal area increment was calculated to characterize the effects of the proximity of overstory trees on multidecadal growth responses of aspen and subalpine fir in aspen-dominant and mixed aspen–conifer stands. Subalpine fir seedlings were established next to aspen (within 10 cm) when aspen was between 15 and 120 years old with a mean age of 60 years. Aspen and subalpine fir growth rates were reduced with increasing conifer abundance. Aspen trees growing next to a proximate subalpine fir tree had slower growth rates over time than aspen trees growing independently. Growth rates of subalpine fir in aspen-dominated stands were similar when growing independently or near aspen trees. However, subalpine fir in conifer-dominated stands maintained higher growth rates when growing next to an aspen tree than when growing independently. The data suggest that as stand competition increases with conifer abundance, the proximity of overstory trees increases competitive exclusion of aspen while having a beneficial growth effect on subalpine fir. These results underscore the importance of maintaining natural fire regimes in forest systems that keep competitive interactions in balance. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| Relation: | https://digitalcommons.usu.edu/aspen_bib/7969; https://digitalcommons.usu.edu/context/aspen_bib/article/8971/viewcontent/Ecosphere___2022___Lee_Molinari___Facilitation_differentially_affects_competitive_responses_of_aspen_and_subalpine_fir.pdf |
| DOI: | 10.1002/ecs2.3957 |
| الاتاحة: | https://digitalcommons.usu.edu/aspen_bib/7969 https://doi.org/10.1002/ecs2.3957 https://digitalcommons.usu.edu/context/aspen_bib/article/8971/viewcontent/Ecosphere___2022___Lee_Molinari___Facilitation_differentially_affects_competitive_responses_of_aspen_and_subalpine_fir.pdf |
| Rights: | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. ; http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.A5099711 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/ecs2.3957 |
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