Results 41 to 50 of about 625,466 (159)

Integrating SfM, LiDAR and TLS for High‐Resolution Monitoring of Palsa Surface Changes and Degradation Dynamics

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer, Timo Kumpula, Pasi Korpelainen, Benjamin Burkhard   +3 more
wiley   +1 more source

Within‐tree spatial heterogeneity of sap flow velocities and wood properties and its effect on the uncertainty of tree level sap flux estimates

PLANTS, PEOPLE, PLANET, EarlyView.
As forests are important for biodiversity and recreation and provide vital resources globally, it is essential that their health can be accurately monitored, for example, by using sap flow probes to measure tree water uptake. We investigated whether sap flow measurements might differ at various locations within the same tree due to variation in wood ...
Stefan Seeger, Markus Weiler, Martin Maier   +2 more
wiley   +1 more source

Retrospective image analysis for long‐term demography using Google Earth imagery

Remote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution Google Earth imagery, combined with minimal field validation, enables retrospective tracking of individual invasive plants. The image shows one of the monitored individuals of Opuntia sp. in Greece. Our approach reveals long‐term demographic patterns, recruitment dynamics, and spatial expansion without continuous ...
Erola Fenollosa, Garrett Cohen, Roberto Salguero‐Gómez   +2 more
wiley   +1 more source

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

Journal 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, Andrea Corradini, Vivian Hawkinson, Olivier Chanel, Charles Figuières, Yann Bramoullé, Charlotte Vanderlocht, Federico Ossi, Davide Righetti, Oswald J. Schmitz, Francesca Cagnacci   +10 more
wiley   +1 more source

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

Methods 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

Predicting global habitat suitability and invasion risks of the red gum lerp psyllid Glycaspis brimblecombei under current and future climates

Agricultural and Forest Entomology, EarlyView.
Ecological niche modelling identified highly suitable habitats for Glycaspis brimblecombei across tropical, subtropical and temperate regions. Future climate projections indicate a moderate contraction of suitable areas, with persistence of core climatic suitability. Model performance was robust (AUC = 0.880; TSS = 0.634; CBI = 0.803), with temperature
Fernanda de Aguiar Coelho, George Corrêa Amaro, Adriene Caldeira Batista, Edmond Joseph Djibril Victor Barry, Muhammad Haseeb, Marcus Alvarenga Soares, Owusu Fordjour Aidoo, Sebastião Lourenço de Assis Júnior, Ricardo Siqueira da Silva   +8 more
wiley   +1 more source

Rulers on the road: Itinerant rule in the Holy Roman Empire, AD 919–1519

American Journal of Political Science, EarlyView.
Abstract Itinerant rule, rule exercised through traveling, was a common yet insufficiently researched, premodern form of governance. Studying the determinants of ruler itineraries in the Holy Roman Empire, AD 919–1519, we argue that rulers' visits targeted “marginal” elites.
Carl Müller‐Crepon, Clara Neupert‐Wentz, Andrej Kokkonen, Jørgen Møller   +3 more
wiley   +1 more source

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

Ibis, 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

An In-Depth UAS-PPK Georeferencing Analysis at Different Flight Heights for an Urban Area

IEEE Access
Acquiring UAS images in urban environments presents a significant importance for various applications but presents challenges, particularly with flight missions and the reliability of the Global Navigation Satellite System (GNSS) signal.
Cristina-Oana Miron, Valeria-Ersilia Oniga, Ana-Maria Loghin, Sorin Nistor, Constantin Chirila, Anca-Alina Lazar, Mihaela Macovei   +6 more
doaj   +1 more source

Modeling of the geographical distribution of two forest‐forming fucoids in the Strait–Alboran demarcation (southern Iberian Peninsula): Implications for conservation and restoration

Journal of Phycology, EarlyView.
Abstract Marine forests formed by canopy‐forming brown algae of the former Cystoseira complex are key habitat‐forming components of Mediterranean coastal ecosystems, supporting biodiversity and multiple ecosystem functions. However, many populations have declined in recent decades due to increasing anthropogenic pressures and climate change, raising ...
Pablo Pérez‐Castro, Elena Bañares‐España, Antonio Flores‐Moya, Ignacio J. Melero‐Jiménez   +3 more
wiley   +1 more source