Results 81 to 90 of about 268,596 (371)

The effect of vegetation patterns on Aeolian mass flux at regional scale: a wind tunnel study [PDF]

open access: yes, 2012
Although insight on the effect of vegetation pattern on Aeolian mass transport is essential for re-planting degraded land, only limited knowledge on this effect is available.
Cornelis, Wim   +7 more
core   +1 more source

Using large language models to extract plant functional traits from unstructured text

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Functional plant ecology seeks to understand how functional traits govern species distributions, community assembly, and ecosystem functions. While global trait datasets have advanced the field, substantial gaps remain, and extracting trait information from text in books, research articles, and online sources via machine learning ...
Viktor Domazetoski   +6 more
wiley   +1 more source

Bayesian Inference of a Finite Population Mean Under Length-Biased Sampling [PDF]

open access: yesarXiv, 2019
We present a robust Bayesian method to analyze forestry data when samples are selected with probability proportional to length from a finite population of unknown size. Specifically, we use Bayesian predictive inference to estimate the finite population mean of shrub widths in a limestone quarry dominated by re-growth of mountain mahogany.
arxiv  

Shrub tundra snowmelt

open access: yesHydrological Processes, 2006
AbstractObservations of land surface and snowpack energetics and mass fluxes were made over arctic shrub tundra of varying canopy height and density using radiometers, eddy covariance flux measurements, and snow mass changes from snow surveys of depth and density.
Pomeroy, J.W.   +8 more
openaire   +3 more sources

Modelled sensitivity of the snow regime to topography, shrub fraction and shrub height [PDF]

open access: yesHydrology and Earth System Sciences, 2014
Abstract. Recent studies show that shrubs are colonizing higher latitudes and altitudes in the Arctic. Shrubs affect the wind transport, accumulation and melt of snow, but there have been few sensitivity studies of how shrub expansion might affect snowmelt rates and timing.
C. B. Ménard, R. Essery, J. Pomeroy
openaire   +3 more sources

Disparity of turbinal bones in placental mammals

open access: yesThe Anatomical Record, EarlyView.
Abstract Turbinals are key bony elements of the mammalian nasal cavity, involved in heat and moisture conservation as well as olfaction. While turbinals are well known in some groups, their diversity is poorly understood at the scale of placental mammals, which span 21 orders.
Quentin Martinez   +11 more
wiley   +1 more source

Tree-depth and Vertex-minors [PDF]

open access: yesarXiv, 2014
In a recent paper, Kwon and Oum claim that every graph of bounded rank-width is a pivot-minor of a graph of bounded tree-width (while the converse has been known true already before). We study the analogous questions for "depth" parameters of graphs, namely for the tree-depth and related new shrub-depth.
arxiv  

Invasion promotes invasion: Facilitation of C3 perennial grass dominance in mixed C3/C4 grassland by an invasive C3 woody sprouter (Prosopis glandulosa)

open access: yesEcology and Evolution, 2019
In the Southern Great Plains (SGP) of the United States, encroachment of the native invasive woody legume, honey mesquite (Prosopis glandulosa Torr.), has caused a decline in C4 mid‐grass abundance.
Robert James Ansley   +2 more
doaj   +1 more source

Thermal refugia and persistence of Texas horned lizards (Phrynosoma cornutum) in small towns

open access: yesEcology and Evolution, 2023
Vegetation loss is a primary cause of habitat degradation and results in a decline in reptile species abundance due to loss of refuge from predators and hot temperatures, and foraging opportunities.
Mary R. Tucker   +2 more
doaj   +1 more source

Biometry Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to measure and classify the plant life at a Land Cover Site to help determine the MUC classification.
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

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