東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back to Search results for [ null ]

Switch To: Labeled | MARC Mode | ISBD

Scaling of a Tree: How Picea sitchen...

Kramer, Russell Davis.

Linked to FindBook

Google Book

Amazon

博客來

Scaling of a Tree: How Picea sitchensis Development, Neighborhood Forest Density, and Forest Structure Influence Canopy Complexity in Olympic Rainforests.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Scaling of a Tree: How Picea sitchensis Development, Neighborhood Forest Density, and Forest Structure Influence Canopy Complexity in Olympic Rainforests./
Author:	Kramer, Russell Davis.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	257 p.
Notes:	Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Contained By:	Dissertations Abstracts International81-04B.
Subject:	Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13902247
ISBN:	9781088329511

Scaling of a Tree: How Picea sitchensis Development, Neighborhood Forest Density, and Forest Structure Influence Canopy Complexity in Olympic Rainforests.
Kramer, Russell Davis.

Scaling of a Tree: How Picea sitchensis Development, Neighborhood Forest Density, and Forest Structure Influence Canopy Complexity in Olympic Rainforests. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 257 p.

Source: Dissertations Abstracts International, Volume: 81-04, Section: B.

Thesis (Ph.D.)--University of Washington, 2019.

This item must not be sold to any third party vendors.

Picea sitchensis is dominant tree in coastal forest ecosystems whose large appendages provide canopy habitat for epiphytes, mammals, and birds. Growth and development of P. sitchensis is described across three scales-tree, neighborhood, and landscape-to illustrate ways this species can accelerate old-growth structure in young forests. We climbed, cored, and three-dimensionally mapped 60 P. sitchensis from 14 to 495-cm diameter, 10 to 94-m tall, and 18 to 390 yr age and developed predictive equations of above ground biomass and leaf area with > 90 % accuracy. Both Pseudotsuga menziesii and Sequoia sempervirens are radically out-grown by P. sitchensis, which becomes heavier (155 ± 9 Mg) than any living P. menziesii and almost half as heavy as any living S. sempervirens in < 500 yr. Measurements of 30-m plots around 36 P. sitchensis trees were used to quantify neighborhood-scale competition on habitat-related appendage development. Appendage diameters and crown volume decrease ~20 % per 25 % increase in neighborhood density, and dense neighborhoods retard development > 15-cm-daimeter appendages by > 100 yr relative to unencumbered trees. Compared to P. menziesii, P. sitchensis accumulates crown complexity twice as fast, yet lives only half as long. At landscape-scale, P. sitchensis-dominated valleys were contrasted with upland P. menziesii-dominated forests based on LiDAR of the Hoh River watershed on the Olympic Peninsula. Valley bottom forests differ from upland forests by consisting of small patches of tall trees (11 %), dense shorter trees (19 %), and gaps (7.4 %) dispersed in a matrix of open forest with scattered large trees (63 %). In contrast, upland forests consist of larger patches of tall (13 %), dense (58 %), and open forest (27 %) with fewer gaps (2.1 %). Valley-associated disturbances increase the amount of open-canopy forest, while upland processes increase closed-canopy tall forests, dense shorter forests, and aggregation of forest patches. The largest trees (top 10 %) are twice as densely distributed in valley-bottom (0.05 tree ha-1) compared to upland (0.02 tree ha-1) forests. Arrangement of tall P. sitchensis within a matrix of more open conditions in valley-bottoms versus large blocks of tall P. menziesii in upland forests accounts for this major landscape-scale difference in canopy structure. The integrated management implications relevant to P. sitchensis are: (1) P. sitchensis is valuable for management to accelerate old-growth structure because of its rapid growth but should be included with longer lived species, (2) competition within 30-m strongly depresses large appendage growth so some trees should be left with ≥ 30-m growing space, and (3) forest treatments emulate a matrix of open-canopy forest with of scattered tall trees interspersed with pockets of dense tall trees to create optimal conditions for growing the largest and most complex individuals.

ISBN: 9781088329511Subjects--Topical Terms:

516476
Ecology.

Scaling of a Tree: How Picea sitchensis Development, Neighborhood Forest Density, and Forest Structure Influence Canopy Complexity in Olympic Rainforests.
LDR:04090nmm a2200325 4500 001 2263256
005 20200214113223.5
008 220629s2019 ||||||||||||||||| ||eng d
020 $a 9781088329511
035 $a (MiAaPQ)AAI13902247
035 $a AAI13902247
040 $a MiAaPQ $c MiAaPQ
100 1 $a Kramer, Russell Davis. $3 3540339
245 1 0 $a Scaling of a Tree: How Picea sitchensis Development, Neighborhood Forest Density, and Forest Structure Influence Canopy Complexity in Olympic Rainforests.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 257 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 $a Advisor: Franklin, Jerry F.
502 $a Thesis (Ph.D.)--University of Washington, 2019.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a Picea sitchensis is dominant tree in coastal forest ecosystems whose large appendages provide canopy habitat for epiphytes, mammals, and birds. Growth and development of P. sitchensis is described across three scales-tree, neighborhood, and landscape-to illustrate ways this species can accelerate old-growth structure in young forests. We climbed, cored, and three-dimensionally mapped 60 P. sitchensis from 14 to 495-cm diameter, 10 to 94-m tall, and 18 to 390 yr age and developed predictive equations of above ground biomass and leaf area with > 90 % accuracy. Both Pseudotsuga menziesii and Sequoia sempervirens are radically out-grown by P. sitchensis, which becomes heavier (155 ± 9 Mg) than any living P. menziesii and almost half as heavy as any living S. sempervirens in < 500 yr. Measurements of 30-m plots around 36 P. sitchensis trees were used to quantify neighborhood-scale competition on habitat-related appendage development. Appendage diameters and crown volume decrease ~20 % per 25 % increase in neighborhood density, and dense neighborhoods retard development > 15-cm-daimeter appendages by > 100 yr relative to unencumbered trees. Compared to P. menziesii, P. sitchensis accumulates crown complexity twice as fast, yet lives only half as long. At landscape-scale, P. sitchensis-dominated valleys were contrasted with upland P. menziesii-dominated forests based on LiDAR of the Hoh River watershed on the Olympic Peninsula. Valley bottom forests differ from upland forests by consisting of small patches of tall trees (11 %), dense shorter trees (19 %), and gaps (7.4 %) dispersed in a matrix of open forest with scattered large trees (63 %). In contrast, upland forests consist of larger patches of tall (13 %), dense (58 %), and open forest (27 %) with fewer gaps (2.1 %). Valley-associated disturbances increase the amount of open-canopy forest, while upland processes increase closed-canopy tall forests, dense shorter forests, and aggregation of forest patches. The largest trees (top 10 %) are twice as densely distributed in valley-bottom (0.05 tree ha-1) compared to upland (0.02 tree ha-1) forests. Arrangement of tall P. sitchensis within a matrix of more open conditions in valley-bottoms versus large blocks of tall P. menziesii in upland forests accounts for this major landscape-scale difference in canopy structure. The integrated management implications relevant to P. sitchensis are: (1) P. sitchensis is valuable for management to accelerate old-growth structure because of its rapid growth but should be included with longer lived species, (2) competition within 30-m strongly depresses large appendage growth so some trees should be left with ≥ 30-m growing space, and (3) forest treatments emulate a matrix of open-canopy forest with of scattered tall trees interspersed with pockets of dense tall trees to create optimal conditions for growing the largest and most complex individuals.
590 $a School code: 0250.
650 4 $a Ecology. $3 516476
650 4 $a Forestry. $3 895157
650 4 $a Botany. $3 516217
650 4 $a Trees. $3 516384
650 4 $a Rainforests. $3 3540340
650 4 $a Plant growth. $3 3540341
690 $a 0329
690 $a 0478
690 $a 0309
710 2 $a University of Washington. $b Environmental and Forest Science. $3 3278420
773 0 $t Dissertations Abstracts International $g 81-04B.
790 $a 0250
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13902247