Results 81 to 90 of about 3,194,918 (181)

Elements on the move: How ungulate migration expands Alpine biogeochemical footprints

open access: yesJournal of Animal Ecology, EarlyView.
Using a spatially explicit model parameterized with GPS telemetry, we show that migratory and resident red deer play distinct roles in nitrogen redistribution across alpine landscapes. Migrants uniquely transport nitrogen upslope and up elevation, linking ecosystem element pools and revealing how the loss of migration alters large‐scale ecosystem ...
Kristy M. Ferraro   +10 more
wiley   +1 more source

Geometric Calibration of an Aerial Multihead Camera System for Direct Georeferencing Applications

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017
An aerial multihead camera consists of a photogrammetric system composed of multiple cameras, which are mounted together in a main structure. By combining the images acquired simultaneously from each camera, a single synthetic image with much larger coverage can be generated.
Leonardo Ercolin Filho   +2 more
openaire   +1 more source

Georeferencing experiments with UAS imagery [PDF]

open access: yes, 2014
Comparing typical airborne mapping systems with Unmanned Airborne Systems (UAS) developed for mapping purposes, there are several advantages and disadvantages of both systems.
G. Jóźków, C. Toth
core   +1 more source

Reusing Geospatial Data of Invasive Alien Insect Species From the Literature: Significance, Challenges, and Potential

open access: yesIntegrative Zoology, EarlyView.
We use bibliometric analysis to evaluate geospatial data reuse for invasive alien insect species (IAIS). Of 1032 relevant publications, 51.0% lacked downloadable raw data. Integrating cross‐regional, temporal, and multi‐species data could address single‐study limitations, but data scarcity remains a barrier.
Shuhao Tan   +5 more
wiley   +1 more source

System calibration for direct georeferencing

open access: yes, 2002
Within the last years extensive tests were done to investigate the accuracy performance of integrated GPS/inertial systems for direct georeferencing in airborne photogrammetric environments.
D. Stallmann, M. Cramer
core  

A validated 3D point‐cloud analysis workflow for the creation of seagrass canopy height models

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Seagrasses support highly productive ecosystems in both temperate and tropical waters and provide essential ecosystem services. Despite their importance, the vertical structure of seagrasses (i.e. the canopy) remains poorly characterised at the microscale, even though it is a strong predictor of ecological processes that influence both ...
Daniele Ventura
wiley   +1 more source

Integrated GNSS Attitude Determination and Positioning for Direct Geo-Referencing

open access: yesSensors, 2014
Direct geo-referencing is an efficient methodology for the fast acquisition of 3D spatial data. It requires the fusion of spatial data acquisition sensors with navigation sensors, such as Global Navigation Satellite System (GNSS) receivers.
Nandakumaran Nadarajah   +2 more
doaj   +1 more source

Future of edge AI in biodiversity monitoring

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Many ecological decisions are slowed by the gap between collecting and analysing biodiversity information. Edge computing moves data processing closer to the sensor, with edge artificial intelligence (AI) using AI models for data processing and selective data transfer.
Aude Vuilliomenet   +2 more
wiley   +1 more source

Fire Detection with UAV-Based Lidar Using Direct Georeferencing Approach

open access: yes, 2021
Wildfires have been on the rise not only in California but also in a lot of major cities around the world. Thanks to the advances in LiDAR technology, especially UAV-based LiDAR, the more traditionally ground-based methods of fire detection can hopefully
Nguyen, Hien H.
core  

NHM Georeferencing & Mass Digitisation

open access: yes, 2020
MOBILISE Workshop: Quality issues in georeferencing: From physical collections to digital data repositories for ecological researchDate: 11 February 2020Location: Centrum Nauk Biologiczno-Chemicznych Uniwersytetu Warszawskiego, Warsaw, PolandAn overview ...
Laurence Livermore (100501)
core   +1 more source

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