Results 51 to 60 of about 183,096 (290)

Development of forest structure and leaf area in secondary forests regenerating on abandoned pastures in Central Amazonia [PDF]

open access: yes, 2005
The area of secondary forest (SF) regenerating from pastures is increasing in the Amazon basin; however, the return of forest and canopy structure following abandonment is not well understood. This study examined the development of leaf area index (LAI),
Aide   +55 more
core   +1 more source

Spaceborne canopy height products should be complemented with airborne laser scanning data: Towards a European canopy height model

open access: yesEarth and Space Science
Measuring and mapping vegetation structure is essential for understanding the functioning of terrestrial ecosystems and for informing environmental policies. Recent years have seen a growing demand for high-resolution data on vegetation structure, driving their prediction at fine resolutions (1 m - 30 m) at state, continental, and global spatial ...
Vítězslav Moudrý   +39 more
openaire   +6 more sources

Unmanned aerial vehicle based tree canopy characteristics measurement for precision spray applications

open access: yesSmart Agricultural Technology, 2023
The critical components for applying the correct amount of agrochemicals are fruit tree characteristics such as canopy height, canopy volume, and canopy coverage.
Md Sultan Mahmud   +4 more
doaj   +1 more source

Seasonal Abundance; Damage; and Comparison of Different Heights, Orientations, and Directions of Yellow Sticky Traps for Sampling of \u3ci\u3eLiriomyza Trifolii\u3c/i\u3e (Diptera: Agromyzidae) in Cotton [PDF]

open access: yes, 2018
This study was done to determine the optimum height, orientation, and direction of yellow sticky traps for sampling of Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) in cotton fields.
Gencsoylu, Ibrahim
core   +2 more sources

Using ICESAT\u27s geoscience laser altimeter system to assess large scale forest disturbance caused by Hurricane Katrina [PDF]

open access: yes, 2009
We assessed the use of GLAS data as a tool to quantify large-scale forest damage. GLAS data for the year prior to and following Hurricane Katrina were compared to wind speed, forest cover, and MODIS NPV maps to analyze senor sampling, and changes in mean
Dolan, Katelyn A
core   +1 more source

Resolving the internal magnetic structure of the solar network

open access: yes, 2012
We analyze the spectral asymmetry of Stokes V (circularly polarized) profiles of an individual network patch in the quiet Sun observed by Sunrise/IMaX. At a spatial resolution of 0.15"-0.18", the network elements contain substructure which is revealed by
Bellot Rubio   +20 more
core   +1 more source

High‐elevation endemic plants predicted to lose habitat from changing climate in Washington State

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise High‐elevation plants face unique challenges from potential climate change impacts that will likely require upslope migration into increasingly smaller suitable habitat. This situation is particularly acute for endemic species that by definition occupy small geographic ranges.
Nicholas L. Gjording   +4 more
wiley   +1 more source

Interpreting a Legacy Fossil Assemblage Excavated From Waribruk (New Guinea II Cave), GunaiKurnai Aboriginal Country, Snowy River National Park, Southeastern Australia

open access: yesArchaeology in Oceania, EarlyView.
ABSTRACT In this paper we report on faunal remains recovered from a legacy archaeological excavation undertaken in the rockshelter entrance of Waribruk (New Guinea II Cave), a GunaiKurnai site located on the west bank of the Snowy River, East Gippsland, southeastern Australia.
Matthew C. McDowell   +7 more
wiley   +1 more source

Reduced grapevine canopy size post-flowering via mechanical trimming alters ripening and yield of 'Pinot noir' [PDF]

open access: yes, 2016
The degree and time of canopy trimming can alter phenology, rates of increase or decrease in berry components during grape ripening, and may influence yield and its components.
Haycock, S   +5 more
core   +2 more sources

Cutting Through the Green: A Case for Grassland Archaeology Using UAV Multispectral Data

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Advances in low‐altitude remote sensing are needed to improve the effectiveness of archaeological prospection in the Netherlands. The geomorphological situation and land use history make applying various remote sensing and geophysical technologies particularly challenging.
Roeland Emaus
wiley   +1 more source

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