Subpixel canopy cover estimation of coniferous forests in Oregon using SWIR imaging spectrometry

2001 ◽  
Vol 106 (D6) ◽  
pp. 5151-5160 ◽  
Author(s):  
David B. Lobell ◽  
Gregory P. Asner ◽  
Beverly E. Law ◽  
Robert N. Treuhaft
Keyword(s):  
Canopy Cover ◽  
Coniferous Forests ◽  
Imaging Spectrometry

Autecology of Erythronium grandiflorum in western Canada

2001 ◽  
Vol 79 (4) ◽  
pp. 500-509 ◽  
Author(s):  
Dawn C Loewen ◽  
Geraldine A Allen ◽  
Joseph A Antos
Keyword(s):  
Canopy Cover ◽  
Detrended Correspondence Analysis ◽  
Coniferous Forests ◽  
Deciduous Trees ◽  
Growth Stages ◽  
Western Canada ◽  
Percent Cover ◽  
Subalpine Meadows ◽  
Associated Species ◽  
Erythronium Grandiflorum

Habitat requirements of the yellow glacier lily, Erythronium grandiflorum Pursh, were studied at 38 sites in southern British Columbia and southwestern Alberta. At each site we recorded densities of E. grandiflorum growth stages from seedling to flowering, environmental characteristics of the site, and percent cover of associated plant species. We carried out detrended correspondence analysis (DCA) of the sites based on cover of associated species, and examined rank correlations between site environmental variables and site ordination scores. Variation among sites was related primarily to elevation and the presence of deciduous vs. coniferous trees. All growth stages of E. grandiflorum were less abundant in coniferous forests than in open areas or sites with deciduous trees, suggesting that evergreen canopies restrict the species on many sites where it could otherwise grow. Although E. grandiflorum populations were most commonly found in subalpine meadows, they flowered more abundantly in low-elevation populations. Recruitment was frequent, with seedlings occurring at many sites; we also showed that detached bulb segments can give rise to new ramets. The present widespread distribution of E. grandiflorum may derive from a post-glacial period with extensive meadow habitat that was favourable for rapid spread.Key words: canopy cover, elevation, yellow glacier lily, post-glacial migration, subalpine meadows.

Herbaceous Response to Canopy Cover, Light Intensity, and Throughfall Precipitation in Coniferous Forests

Ecology ◽  
1969 ◽  
Vol 50 (2) ◽  
pp. 255-263 ◽  
Author(s):  
R. C. Anderson ◽  
O. L. Loucks ◽  
A. M. Swain
Keyword(s):  
Light Intensity ◽  
Canopy Cover ◽  
Coniferous Forests

Effects of forest canopy cover and floor on chemical quality of water in broad leaved and coniferous forests of Istanbul, Turkey

2013 ◽  
Vol 289 ◽  
pp. 371-377 ◽  
Author(s):  
Hosein Khoroshi Eisalou ◽  
Kamil Şengönül ◽  
Ferhat Gökbulak ◽  
Yusuf Serengil ◽  
Betül Uygur
Keyword(s):  
Forest Canopy ◽  
Canopy Cover ◽  
Coniferous Forests ◽  
Chemical Quality ◽  
Quality Of Water

Prediction of snow-water equivalents in coniferous forests

1981 ◽  
Vol 11 (4) ◽  
pp. 854-857 ◽  
Author(s):  
Alton S. Harestad ◽  
Fred L. Bunnell
Keyword(s):  
Canopy Cover ◽  
Relative Influence ◽  
Coniferous Forests ◽  
Forest Canopies ◽  
Forested Areas ◽  
Snow Water ◽  
The Difference

Less snow accumulates under forest canopies than in small openings. Analysis of relationships between canopy cover and snow-water equivalents (SWE) for coniferous forests indicate substantial differences between areas and years. Many of these differences result from differences in the total amount of snowfall. The difference between SWE values in open and forested areas increases with increasing SWE in the open. However, the relative influence of canopy cover on maximum SWE decreases with increasing SWE in open areas. By incorporating this latter relationship, canopy cover can be used to predict snow-water equivalents in coniferous forests.

Spatial assemblage structure of shallow-water reef fish in Southwest Australia

2020 ◽  
Vol 649 ◽  
pp. 125-140
Author(s):  
DS Goldsworthy ◽  
BJ Saunders ◽  
JRC Parker ◽  
ES Harvey
Keyword(s):  
Shallow Water ◽  
Reef Fish ◽  
Marine Environment ◽  
Fish Assemblages ◽  
Canopy Cover ◽  
Reef Fishes ◽  
Reef Fish Assemblage ◽  
Reef Type ◽  
Present Distribution ◽  
Southwest Australia

Bioregional categorisation of the Australian marine environment is essential to conserve and manage entire ecosystems, including the biota and associated habitats. It is important that these regions are optimally positioned to effectively plan for the protection of distinct assemblages. Recent climatic variation and changes to the marine environment in Southwest Australia (SWA) have resulted in shifts in species ranges and changes to the composition of marine assemblages. The goal of this study was to determine if the current bioregionalisation of SWA accurately represents the present distribution of shallow-water reef fishes across 2000 km of its subtropical and temperate coastline. Data was collected in 2015 using diver-operated underwater stereo-video surveys from 7 regions between Port Gregory (north of Geraldton) to the east of Esperance. This study indicated that (1) the shallow-water reef fish of SWA formed 4 distinct assemblages along the coast: one Midwestern, one Central and 2 Southern Assemblages; (2) differences between these fish assemblages were primarily driven by sea surface temperature, Ecklonia radiata cover, non-E. radiata (canopy) cover, understorey algae cover, reef type and reef height; and (3) each of the 4 assemblages were characterised by a high number of short-range Australian and Western Australian endemic species. The findings from this study suggest that 4, rather than the existing 3 bioregions would more effectively capture the shallow-water reef fish assemblage patterns, with boundaries having shifted southwards likely associated with ocean warming.

The Vegetation Structure of Evergreen Coniferous Forests of Daehuksan Island in the Dadohaehaesang National Park

2018 ◽  
Vol 30 (1) ◽  
pp. 173-193 ◽  
Author(s):  
Yeongjun Cho ◽  
Hasong Kim ◽  
Hyeonho Myeong ◽  
Jungwon Park ◽  
Janggeun Oh
Keyword(s):  
Vegetation Structure ◽  
National Park ◽  
Coniferous Forests

Fire Behavior Assessment Team: pre- and post-fire canopy cover data

2020 ◽  
Author(s):  
Alicia L. Reiner ◽  
Carol M. Ewell ◽  
Josephine A. Fites-Kaufman ◽  
Scott N. Dailey ◽  
Erin K. Noonan-Wright ◽  
...  
Keyword(s):  
Fire Behavior ◽  
Canopy Cover ◽  
Behavior Assessment
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