Results 71 to 80 of about 44,602 (291)
Remote Sensing Boreal Coarse Woody Debris
, 2019 Coarse woody debris (CWD) are vital components of forested environments, affecting the physical structure and biochemistry of forests, supplying habitats, nutrients and food for many organisms. Additionally, CWD is an especially important element in boreal forest management in Alberta, Canada.
openaire +2 more sources
Coarse Woody Debris Management with Ambiguous Chance Constrained Robust Optimization
Forests, 2019 Coarse woody debris (deadwood) serves as a dwelling space for many rare species, and is therefore a most important factor to ensure diversity in forest ecosystems.
F. Härtl, T. Knoke
semanticscholar +1 more source
Meander‐Bend Erosion Dynamics Along a Gravel‐Bed River: Insights From Short‐Term UAV Monitoring
River Research and Applications, EarlyView.ABSTRACT Riverbank erosion is a natural process in meandering rivers that contributes to sediment supply and geomorphic diversity, yet it can threaten infrastructure and human activities within the floodplain. Recently, many studies have used high‐resolution remote sensing technologies to measure bank erosion, but they often focus on technical aspects ...
Katarina Pavlek +2 more
wiley +1 more source
Is the critical Shields stress for incipient sediment motion dependent on channel-bed slope? [PDF]
, 2008 Data from laboratory flumes and natural streams show that the critical Shields stress for initial sediment motion increases with channel slope, which indicates that particles of the same size are more stable on steeper slopes.
Dietrich, William E. +2 more
core +1 more source
River Research and Applications, EarlyView.ABSTRACT The geometry of alluvial river channels can give insight into their stability, which can inform predictions of morphological change, flood risk and ecological degradation. Fundamental hydraulic geometry relations can be used to estimate the equilibrium dimensions of stable river channels by evaluating the balance between the erodibility of bed
David Whitfield +3 more
wiley +1 more source
Insects, 2018 The distribution of Amblyomma americanum (L.) is changing and reports of tick-borne disease transmitted by A. americanum are increasing in the USA. We used flagging to collect ticks, surveyed vegetation and collected weather data in 2015 and 2016.
Mary E. Gilliam +3 more
doaj +1 more source
Gravel galore: Impacts of clear-cut logging on salmon and their habitats [PDF]
, 2002 Timber harvest may have both direct and indirect effects on salmon, and with a few exceptions those effects result in lowered survival of salmon in their stream habitats compared with unlogged forest (Hicks et al. 1991b).
Hicks, Brendan J.
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Experimental reintroduction of woody debris on the Williams River, NSW: geomorphic and ecological responses [PDF]
, 2004 A total of 436 logs were used to create 20 engineered log jams (ELJs) in a 1.1 km reach of the Williams River, NSW, Australia, a gravel-bed river that has been desnagged and had most of its riparian vegetation removed over the last 200 years.
Abbe, T.B. +3 more
core +1 more source
Natural regeneration on coarse woody debris
, 2016 In the Pacific Northwest temperate forest, coarse woody debris provides a great substrate for natural regeneration of many conifer species. Logs in decay class III and IV are most suitable for seedling growth. Seedling establishment and early survival rate are higher on nurse logs than on forest floors because of favorable microsite and seedbed ...
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Remote Sensing in Ecology and Conservation, EarlyView.We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin +5 more
wiley +1 more source