Results 101 to 110 of about 3,194,918 (181)

The former distribution of White‐tailed Eagles in Iberia, the Mediterranean and the Middle East: a case study of the importance of understanding historical distribution in informing current conservation and restoration interventions

open access: yesIbis, EarlyView.
The importance of considering historical data in developing conservation and restoration measures for individual species and for wider ecological restoration has been pointed out by recent reviews but often remains neglected in practice. This paper provides a case study illustrating the issue through a review of the former breeding distribution of the ...
Duncan J. Halley
wiley   +1 more source

High-Performance Parallel Direct Georeferencing for Massive ULS LiDAR Measurements

open access: yesRemote Sensing
The rapid increase in point density and acquisition rate of UAV laser scanning (ULS) systems has shifted the primary bottleneck of LiDAR workflows from data acquisition to post-processing, particularly during direct georeferencing of massive LiDAR ...
Mei Yu, Yuhao Zhou, Hua Liu, Bo Liu
doaj   +1 more source

A Direct Georeferencing Method for Terrestrial Laser Scanning Using GNSS Data and the Vertical Deflection from Global Earth Gravity Models

open access: yes, 2017
Terrestrial laser scanning is an efficient technique in providing highly accurate point clouds for various geoscience applications. The point clouds have to be transformed to a well-defined reference frame, such as the global Geodetic Reference System ...
Andrzej Borkowski   +4 more
core   +1 more source

Airborne Direct Georeferencing of Frame Imagery: An Error Budget [PDF]

open access: yes, 2020
This paper presents an error analysis for the airborne direct georeferencing technique, where integrated GPS/IMU positioning and navigation systems are used in conjunction with aerial cameras for airborne mapping.
Erik Lithopoulos   +2 more
core  

An AI‐assisted workflow for generating historical species distributions from avian museum specimens

open access: yesIbis, EarlyView.
The Earth's biodiversity is changing rapidly due to human activities. Natural history collections could help us better understand how and why biodiversity is changing but are grossly under‐used in this respect. Artificial intelligence (AI) has the potential to transform this situation by enabling us to unlock data associated with museum specimens more ...
Peter Learned   +6 more
wiley   +1 more source

Direct georeferencing and orthorectification of airborne digital images

open access: yes, 2020
GPS/INS (Global Positioning System / Inertial Navigation System) bringspossibility of relaxing the demand for aerial triangulation in stereo modelconstruction and rectification. In this thesis a differential rectification algorithm isprogrammed with Matlab software for aerial frame camera images.
openaire   +1 more source

GNSS navigation interference disrupts telemetry tracking of raptors migrating between Europe and Africa

open access: yesIbis, EarlyView.
Global Navigation Satellite System (GNSS) interference in war conflict zones can disrupt wildlife tracking for research and conservation efforts. In 2023 and 2024, we tagged Black Kites Milvis migrans in Moldova and Kazakhstan, respectively, with telemetry loggers, tracked them until September 2025 and found that 20 out of the 24 Black Kites had ...
Ivan Literák   +4 more
wiley   +1 more source

The craters that never were: Anthropogenic origins of alleged impact structures in the Chiemgau region

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Public fascination with impact craters often drives bold speculations, but rigorous verification is critical. In southeastern Bavaria, numerous depressions have been proposed to represent impact craters associated with a catastrophic event in Celtic times (between 900 BC and 600 BC)—the so called “Chiemgau Impact.” To date, the evidence ...
Robert Huber   +2 more
wiley   +1 more source

Unit 29 - Discrete Georeferencing [PDF]

open access: yes, 1990
This unit concludes the module on coordinate systems and geocoding. Several important practical issues are raised here that will be important particularly for those who will be working with economic and demographic databases.
National Center for Geographic Information and Analysis   +1 more
core   +1 more source

Systematic and Taxonomic Revision of Ostrea stentina Species Complex (Bivalvia: Ostreidae): New Insights From a Topotype‐Based Integrative Approach

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Cryptic marine species complexes with plastic morphology, shallow divergence, and broad distributions are among the hardest taxonomic problems in zoology. The Ostrea stentina complex, reported across the Atlantic, Mediterranean, and Indo‐Pacific, is a striking example. We present the first topotype‐anchored integrative revision of this complex,
Matteo Garzia   +3 more
wiley   +1 more source

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