東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Biodiversity potential in the Pacifi...

Verschuyl, Jacob Pieter.

Linked to FindBook

Google Book

Amazon

博客來

Biodiversity potential in the Pacific and Inland Northwest: The relative importance of forest structure and available energy in driving species diversity.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Biodiversity potential in the Pacific and Inland Northwest: The relative importance of forest structure and available energy in driving species diversity./
Author:	Verschuyl, Jacob Pieter.
Description:	190 p.
Notes:	Adviser: Andrew J. Hansen.
Contained By:	Dissertation Abstracts International68-02B.
Subject:	Agriculture, Forestry and Wildlife. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3254741

Biodiversity potential in the Pacific and Inland Northwest: The relative importance of forest structure and available energy in driving species diversity.
Verschuyl, Jacob Pieter.

Biodiversity potential in the Pacific and Inland Northwest: The relative importance of forest structure and available energy in driving species diversity. - 190 p.

Adviser: Andrew J. Hansen.

Thesis (Ph.D.)--Montana State University, 2007.

Currently, the most common strategy of forest biodiversity managers in the Pacific and Inland Northwest (PINW) is to maintain structural complexity within forest stands and create the full range of seral stages across the landscape. Recent advances in ecological theory reveal that biodiversity at regional to continental scales is strongly influenced by available energy (i.e. factors influencing vegetative growth such as precipitation, temperature, radiation, soil fertility). We hypothesized bird species richness (BSR) exhibits a positive or unimodal relationship with energy across landscapes and the relationship between energy and BSR within a landscape is positive in energy limited landscapes and flat or decreasing in energy rich landscapes. Additionally, we hypothesized that structural complexity explains a lower percentage of the variation in BSR in energy limited environments and higher percentage in energy rich environments and that the slope of the relationship between structural complexity and BSR is greatest in energy rich environments. Ours is the first study to test the relative influence of energy and vegetation structure on BSR at local scales, and to offer predictive theory on how these influences differ across energy gradients. We sampled bird communities and vegetation across a matrix of seral stages and biophysical settings at each of 5 landscapes. We analyzed the response of BSR to structural complexity and energy covariates at each landscape. We found that (1) BSR had a unimodal relationship with available energy across the PINW region, (2) the landscape-scale relationships between energy and BSR were positive or unimodal in energy limited locations and were flat or negative in energy rich locations, (3) forest structural complexity explained more of the variation in bird species richness in energy rich landscapes, and (4) the slope of the relationship between forest structural complexity and BSR was steepest in energy limited locations and negative in energy rich locations. In energy rich locations, forest managers will likely increase landscape-scale diversity by providing all seral-stages and a range of forest structural complexity. In low-energy environments, biodiversity will likely be maximized by managing local high-energy hotspots judiciously and adjusting harvest intensities in other locations to compensate for slower regeneration rates.Subjects--Topical Terms:

783690
Agriculture, Forestry and Wildlife.

Biodiversity potential in the Pacific and Inland Northwest: The relative importance of forest structure and available energy in driving species diversity.
LDR:03359nam 2200277 a 45 001 974224
005 20110929
008 110929s2007 eng d
035 $a (UMI)AAI3254741
035 $a AAI3254741
040 $a UMI $c UMI
100 1 $a Verschuyl, Jacob Pieter. $3 1298168
245 1 0 $a Biodiversity potential in the Pacific and Inland Northwest: The relative importance of forest structure and available energy in driving species diversity.
300 $a 190 p.
500 $a Adviser: Andrew J. Hansen.
500 $a Source: Dissertation Abstracts International, Volume: 68-02, Section: B, page: 0730.
502 $a Thesis (Ph.D.)--Montana State University, 2007.
520 $a Currently, the most common strategy of forest biodiversity managers in the Pacific and Inland Northwest (PINW) is to maintain structural complexity within forest stands and create the full range of seral stages across the landscape. Recent advances in ecological theory reveal that biodiversity at regional to continental scales is strongly influenced by available energy (i.e. factors influencing vegetative growth such as precipitation, temperature, radiation, soil fertility). We hypothesized bird species richness (BSR) exhibits a positive or unimodal relationship with energy across landscapes and the relationship between energy and BSR within a landscape is positive in energy limited landscapes and flat or decreasing in energy rich landscapes. Additionally, we hypothesized that structural complexity explains a lower percentage of the variation in BSR in energy limited environments and higher percentage in energy rich environments and that the slope of the relationship between structural complexity and BSR is greatest in energy rich environments. Ours is the first study to test the relative influence of energy and vegetation structure on BSR at local scales, and to offer predictive theory on how these influences differ across energy gradients. We sampled bird communities and vegetation across a matrix of seral stages and biophysical settings at each of 5 landscapes. We analyzed the response of BSR to structural complexity and energy covariates at each landscape. We found that (1) BSR had a unimodal relationship with available energy across the PINW region, (2) the landscape-scale relationships between energy and BSR were positive or unimodal in energy limited locations and were flat or negative in energy rich locations, (3) forest structural complexity explained more of the variation in bird species richness in energy rich landscapes, and (4) the slope of the relationship between forest structural complexity and BSR was steepest in energy limited locations and negative in energy rich locations. In energy rich locations, forest managers will likely increase landscape-scale diversity by providing all seral-stages and a range of forest structural complexity. In low-energy environments, biodiversity will likely be maximized by managing local high-energy hotspots judiciously and adjusting harvest intensities in other locations to compensate for slower regeneration rates.
590 $a School code: 0137.
650 4 $a Agriculture, Forestry and Wildlife. $3 783690
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Environmental Sciences. $3 676987
690 $a 0329
690 $a 0478
690 $a 0768
710 2 0 $a Montana State University. $3 1255135
773 0 $t Dissertation Abstracts International $g 68-02B.
790 $a 0137
790 1 0 $a Hansen, Andrew J., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3254741