Landscape-level variation in forest structure and biogeochemistry across a substrate age gradient in Hawaii

Ecology ◽  
2009 ◽  
Vol 90 (11) ◽  
pp. 3074-3086 ◽  
Author(s):  
Peter Vitousek ◽  
Gregory P. Asner ◽  
Oliver A. Chadwick ◽  
Sara Hotchkiss
Keyword(s):  
Forest Structure ◽  
Level Variation ◽  
Substrate Age ◽  
Substrate Age Gradient ◽  
Landscape Level

The importance of disturbance and forest structure to bird abundance in the Black Hills

The Condor ◽  
2019 ◽  
Vol 121 (1) ◽  
Author(s):  
Elizabeth A Matseur ◽  
Joshua J Millspaugh ◽  
Frank R Thompson ◽  
Brian E Dickerson ◽  
Mark A Rumble
Keyword(s):  
Forest Structure ◽  
Vegetation Type ◽  
Positive Association ◽  
Black Hills ◽  
Ground Vegetation ◽  
Percent Cover ◽  
Bird Abundance ◽  
Vegetation Characteristics ◽  
Percent Area ◽  
Landscape Level

Abstract Many North American birds associated with forest disturbances such as wildfire and mountain pine beetle (Dendroctonus ponderosae) outbreaks are declining in abundance. More information on relationships between avian abundance and forest structure and disturbance is needed to guide conservation and management. Our objective was to determine densities of American Three-toed Woodpecker (Picoides dorsalis), Black-backed Woodpecker (Picoides arcticus), Red-breasted Nuthatch (Sitta canadensis), Brown Creeper (Certhia americana), and White-winged Junco (Junco hyemalis aikeni) in relation to vegetation characteristics and disturbance at the point and landscape level in the Black Hills and Bear Lodge Mountains of South Dakota and Wyoming. We conducted 3 point counts from late March to late June 2015 and 2016 at more than 2,300 locations distributed across a gradient of forest structure and disturbance types. We estimated densities using 3-level hierarchical time-removal models that simultaneously estimated abundance, availability, and detection probability. Black-backed Woodpeckers were positively related to percent area in 1- to 3-year-old wildfires and Brown Creepers were positively associated with percent area in 4- to 5-year-old wildfires; however, Red-breasted Nuthatches were negatively related to percent area in 3- to 5-year-old wildfires. With the exception of American Three-toed Woodpeckers, species were positively related to percent cover of beetle-killed trees. Brown Creepers, White-winged Juncos, and Red-breasted Nuthatches had mixed responses to percent overstory canopy cover. White-winged Juncos also had a positive association with percent ground vegetation at the point and landscape level. Brown Creepers were strongly linked with spruce vegetation type. American Three-toed Woodpeckers, which are thought to occupy spruce forest in the Black Hills, did not show a strong relationship with any covariates. Maintaining some areas of natural disturbances along with heterogeneity of vegetation characteristics within stands and at the landscape scale will benefit the needs of a diverse bird community in the Black Hills.

scholarly journals Landscape Level Variation in Tick Abundance Relative to Seasonal Migration in Red Deer

PLoS ONE ◽  
2013 ◽  
Vol 8 (8) ◽  
pp. e71299 ◽  
Author(s):  
Lars Qviller ◽  
Nina Risnes-Olsen ◽  
Kim Magnus Bærum ◽  
Erling L. Meisingset ◽  
Leif Egil Loe ◽  
...  
Keyword(s):  
Red Deer ◽  
Seasonal Migration ◽  
Level Variation ◽  
Tick Abundance ◽  
Landscape Level

Modeling trade-offs between fire threat reduction and late-seral forest structure

2005 ◽  
Vol 35 (11) ◽  
pp. 2562-2574 ◽  
Author(s):  
David E Calkin ◽  
Susan Stevens Hummel ◽  
James K Agee
Keyword(s):  
Forest Structure ◽  
Forest Dynamics ◽  
Forest Resource ◽  
Management Options ◽  
Forest Reserve ◽  
Silvicultural Treatments ◽  
Trade Offs ◽  
Fire Threat ◽  
Landscape Level

Evaluating the effects of managing for one forest resource in terms of associated impacts on other resources is not easy. Yet methods to identify potential trade-offs among forest resources are necessary to inform people about the implications of management options on public land. This paper uses a case study from a forest reserve in the northwestern United States to quantify trade-offs between fire threat (FT) and late-seral forest (LSF) structure at stand and landscape levels. Simulation of forest dynamics was done with and without silvicultural treatments. A landscape optimization algorithm maximized FT reduction subject to constraints on amount of LSF structure and total area treated. Results suggest that compatibility between the two objectives is possible at the landscape level when LSF structure is about 45% or less of the total reserve area. Conflict can exist between them at the stand level and when more area is required to be in LSF structure in the reserve landscape.

Monitoring forest structure at landscape level: a case study of Scots pine forest in NE Turkey

2008 ◽  
Vol 152 (1-4) ◽  
pp. 71-81 ◽  
Author(s):  
Salih Terzioğlu ◽  
Emin Zeki Başkent ◽  
Ali İhsan Kadıoğulları
Keyword(s):  
Scots Pine ◽  
Forest Structure ◽  
Pine Forest ◽  
Scots Pine Forest ◽  
Landscape Level

Landscape level variation in soil resources and microbial properties in a no-till corn field

2005 ◽  
Vol 29 (2) ◽  
pp. 99-123 ◽  
Author(s):  
M.A. Cavigelli ◽  
L.L. Lengnick ◽  
J.S. Buyer ◽  
D. Fravel ◽  
Z. Handoo ◽  
...  
Keyword(s):  
Level Variation ◽  
Soil Resources ◽  
Microbial Properties ◽  
No Till ◽  
Corn Field ◽  
Landscape Level

scholarly journals Changes in wood anatomy linked to canopy height in a Hawaiian wet montane forest along a substrate age gradient

Tropics ◽  
2005 ◽  
Vol 14 (2) ◽  
pp. 173-178
Author(s):  
Tatsuyuki SEINO ◽  
Naoki OKADA ◽  
Kanehiro KITAYAMA
Keyword(s):  
Wood Anatomy ◽  
Montane Forest ◽  
Canopy Height ◽  
Substrate Age ◽  
Substrate Age Gradient
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