Results 101 to 110 of about 375,373 (341)

Biometry Protocol [PDF]

, 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  

IECAU-Net: A Wood Defects Image Segmentation Network Based on Improved Attention U-Net and Attention Mechanism

BioResources
Saw wood cracks are defects that affect the appearance and mechanical strength of sawn wood. Crack defects in the surface of sawn wood can be readily detected.
Yingda Dong, Chunguang He, Xiaoyang Xiang, Yuhan Cui, Yongkang Kang, Anning Ding, Huaqiong Duo, Ximing Wang   +7 more
doaj  

A narrow window of summer temperatures associated with shrub growth in Arctic Alaska

Environmental Research Letters, 2020
Warming in recent decades has triggered shrub expansion in Arctic and alpine tundra, which is transforming these temperature-limited ecosystems and altering carbon and nutrient cycles, fire regimes, permafrost stability, land-surface climate-feedbacks ...
Laia Andreu-Hayles, Benjamin V Gaglioti, Logan T Berner, Mathieu Levesque, Kevin J Anchukaitis, Scott J Goetz, Rosanne D’Arrigo   +6 more
doaj   +1 more source

The economic value of biodiversity in New Zealand: Results from a household survey [PDF]

, 2009
This paper presents the results of a national study examining the economic value of biodiversity in New Zealand. Three valuation techniques were used to collect information from respondents: the contingent valuation method, the well-being method and the ...
Kaval, Pamela, Scrimgeour, Frank, Yao, Richard   +2 more
core   +1 more source

Topographic Roughness as an Emergent Property of Geomorphic Processes and Events

AGU Advances
Earth's terrestrial surfaces commonly exhibit topographic roughness at the scale of meters to tens of meters. In soil‐ and sediment‐mantled settings topographic roughness may be framed as a competition between roughening and smoothing processes.
T. H. Doane, J. H. Gearon, H. K. Martin, B. J. Yanites, D. A. Edmonds   +4 more
doaj   +1 more source

Phylogenomics and Biogeography of the Eastern Asian–Eastern North American Disjunct Genus Hylodesmum (Fabaceae)

Biological Diversity, EarlyView.
Integrating data from plastid genomes, nrDNA, and 353 low‐copy nuclear genes, this study establishes a robust phylogenetic framework for Hylodesmum. This framework supports a taxonomic revision recognizing 18 species and reveals a complex pattern of bidirectional EA–ENA dispersal, with mammals as a plausible dispersal agent. ABSTRACT Phylogenomics with
Zhuqiu Song, Gang Yao, Chen Ren, Kaiwen Jiang, Dongxian Xu, Shijin Li   +5 more
wiley   +1 more source

PLANT SPECIES DIVERSITY AND ECOSYSTEM FUNCTIONING IN NATIVE SAVANNAS AND GRASSLANDS OF THE PLATEAU IN THE META DEPARTMENT, COLOMBIA

Tropical and Subtropical Agroecosystems
Background: livestock farming has been based on establishing extensive breeding systems (i.e., low density of individuals per unit area). Despite the high diversity of flora in the savanna in the Orinoco plateau of Colombia, there is still a knowledge ...
Jhon Alexander Carrillo-Rozo, Jeisson Rodriguez-Valenzuela, Sergio David Parra-González   +2 more
doaj   +1 more source

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 more
wiley   +1 more source

SHRUBS

[EN] Shrubs play an intermediate role between trees (volumes) and herbaceous plants (ground cover). They act on a more human scale and with their masses and groupings they can also add volume to areas and scenes in the garden. They are useful for establishing successive planes, layers, or levels in the green component of a park or a garden; they serve ...
openaire   +3 more sources

Annotated list of vascular plants of Zarafshan National Natural Park (Uzbekistan)

Acta Biologica Sibirica
The article provides an annotated list of vascular plants growing since the beginning of the formation of the Zarafshan State Reserve in 1975 and then in 2018 transferred to another category of protected area – Zarafshan National Natural Park.
Flora Kabulova, Shuhrat Valiev, Noila Jumakulova, Shoxira Atayeva   +3 more
doaj   +1 more source