Results 51 to 60 of about 651,698 (156)

Spatial variation and predictors of plant species' intrinsic climate sensitivity across the conterminous United States

open access: yesEcography, EarlyView.
Understanding how species' sensitivity to climate varies spatially across their ranges and elucidating the important causes is essential for identifying ecologically meaningful geographic units and conservation actions for biodiversity. In this study, we estimated climatic occurrence niches of vascular plants to explore the spatial variation in species'
Weiqing Qu   +4 more
wiley   +1 more source

Knowledge sourcing, geopolitics, and FDI: An empirical analysis on the US green and digital sectors

open access: yesGlobal Strategy Journal, EarlyView.
Abstract Research Summary This paper examines how foreign direct investment (FDI) shapes firms' sourcing of knowledge in the digital and green domains under rising geopolitical frictions. We assemble a firm–country dyadic panel (2013–2020) linking US patent backward citations to firms' FDI, enriched with bilateral geopolitical distance and host‐country
Alberto Maria Radici
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

open access: yesPLANTS, 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   +2 more
wiley   +1 more source

Methodological description of the georeferencing process.

open access: yes, 2022
Methodological description of the georeferencing process.
Rosane Harter Griep (4956100)   +9 more
core   +1 more source

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

open access: yesRemote 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   +2 more
wiley   +1 more source

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

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

Calibration and Accuracy Assessment in a Direct Georeferencing System in UAS Photogrammetry [PDF]

open access: yes, 2018
Unmanned aerial systems (UASs) have been already proven to be useful in fields and disciplines such as agriculture, forestry, or environmental mapping, and they have also found application during natural and nuclear disasters.
Janata, Premysl   +9 more
core   +1 more source

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

open access: yesAgricultural 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   +8 more
wiley   +1 more source

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

open access: yesAmerican 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   +3 more
wiley   +1 more source

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