Results 151 to 160 of about 494,179 (298)

A mountain hiker climbing Half Dome at Yosemite National Park, ca.1930

open access: yes, 2005
Photographic portrait of a mountain hiker climbing Half Dome at Yosemite National Park, ca.1930. A man equipped with ropes and hiking gear is holding on to an extended rope diagonal to the image. He is standing on a steep slope, apparently on a mountain,
Pierce, C.C. (Charles C.), 1861-1946
core  

UAV‐Based Precision Seed Dropping for Automated Reforestation

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Wildfires and deforestation pose significant threats to forest ecosystems, motivating scalable methods for reforestation beyond labor‐intensive cultivation of native forest seedlings in nurseries. To enable large‐scale direct seeding of native species, this paper presents the design, analysis, and field evaluation of a UAV‐based seed‐dropping ...
Qi Rui Lee   +5 more
wiley   +1 more source

A Functional Flows Framework for the Terminal Great Salt Lake Basin: Can We Have Our Lake and Drink It Too?

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Terminal basins provide unique aquatic environments that are often highly sensitive to streamflow contributions, making them a focal point for environmental water management. However, the water needs for terminal lake, wetland, and river ecosystems, and how they relate, remain a fundamental knowledge gap that constrains our ability to ...
Belize Lane   +9 more
wiley   +1 more source

The Application of Autonomous Fixed‐Wing Drones in the Sub‐Antarctic Operating Beyond Visual Line of Sight to Enable Large Area, Multi‐Species Population Monitoring in a Changing Environment

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Autonomous fixed‐wing drones operating beyond visual line of sight of the pilot were used to conduct the first aerial, multi‐species baseline reference survey at the sub‐Antarctic island of South Georgia. Long‐term population monitoring in this remote, challenging environment has historically proved difficult, with terrestrial monitoring generally ...
N. Fenney   +5 more
wiley   +1 more source

Arboreal signals in the skeletal proportions of the Gorilla foot. [PDF]

open access: yesJ Anat
Greiner EG   +16 more
europepmc   +1 more source

Unidentified man rappelling

open access: yes
Photo showing an Alpine Mountain Club member climbing on a mountain (location unknown, maybe Pete\u27s Rock)

core  

The Emerging Role of UAV for Heathland Monitoring and Conservation: State of the Art and Perspectives

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Heathland ecosystems are currently in a degraded state due to agricultural transformations and the effects of climate change. They are semi‐natural ecosystems hosting a variety of species (fauna and flora), and they also carry landscape and cultural importance, hence the need to pay careful attention to their conservation.
J. Boissonnat, F. Binet, T. Houet
wiley   +1 more source

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