Results 21 to 30 of about 363,904 (309)
Body Wave Speed Structure of Eastern North America
The eastern, passive margin of the North American continent is more heterogeneous than originally envisioned. Imaged by teleseismic body wave arrivals, both compressional Vp and shear Vsh, the lithospheric mantle of the stable, eastern North America ...
Brian Savage
doaj +1 more source
Sedimentary Record of Arc‐Continent Collision Along Mesozoic SW North America (Siuna Belt, Nicaragua) [PDF]
AbstractThe western margin of the Caribbean Plate is a typical example where oceanic and continental terranes have amalgamated by subduction, collision, and strike‐slip processes. The boundaries between these blocks, as well as their tectonostratigraphic records, are generally covered by younger deposits and dense tropical vegetation, which may hamper ...
Goran Andjić +6 more
openaire +4 more sources
Interactions between carbon and nitrogen dynamics in estimating net primary productivity for potential vegetation in North America [PDF]
We use the terrestrial ecosystem model (TEM), a process-based model, to investigate how interactions between carbon (C) and nitrogen (N) dynamics affect predictions of net primary productivity (NPP) for potential vegetation in North America. Data on pool
Joyce, L. A. +6 more
core +2 more sources
European Springtails Orchesella cincta (L.) and O. villosa (L.) (Collembola: Entomobryidae): Vagabond Species of the Nearctic Region [PDF]
North American specimens of the European invasive springtail Orchesella cincta (L.) were compared to several published European haplotypes in a phylogenetic framework using likelihood methods based on a portion of cytochrome oxidase II (cox2).
Bernard, Ernest C +2 more
core +2 more sources
Continent-wide drainage reorganization in North America driven by mantle flow
Abstract North America (NA) experienced pronounced changes in continental-scale drainage characterized by a reversal for much of the continental interior from north into the Canadian arctic to south into the Gulf of Mexico (GoM) from the Mid-Cretaceous to the Paleocene. However, the driving mechanism for these profound drainage reorganizations remain
Huilin Wang +2 more
openaire +3 more sources
Business Dynamism and Innovation Capacity, an Entrepreneurship Worldwide Perspective
This research aims to identify which factors best explain business dynamics and innovation capacity in the continents of Africa, Asia, Europe, Latin America and the Caribbean, and North America.
João Lopes +4 more
doaj +1 more source
A New Estimate of North American Mountain Snow Accumulation From Regional Climate Model Simulations
Despite the importance of mountain snowpack to understanding the water and energy cycles in North America's montane regions, no reliable mountain snow climatology exists for the entire continent.
Melissa L. Wrzesien +6 more
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In the late 18th century, the western part of the North American continent remained largely unexplored, which still fuelled imaginary conceptions of the territory.
Pierre-François Peirano
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Studies on the peopling of South America have been limited by the paucity of sequence data from Native Americans, especially from the east part of the Amazon region.
André M. Ribeiro-dos-Santos +10 more
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Hymenolepis ackerti n. sp., parasite of rodents from the tallgrass prairie ecoregion of North America is herein characterized. This tapeworm occurs in 3 species of rodents including the hispid cotton rat Sigmodon hispidus, the eastern woodrat Neotoma ...
F. Agustín Jiménez +2 more
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