Results 71 to 80 of about 94,886 (291)
Ecography, EarlyView.Species diversity typically increases from higher to lower latitudes, but the regional‐scale variation along this geographic gradient remains unclear. It has been suggested that species diversity throughout Amazonia generally increases westward toward the Andes, but this pattern and its environmental determinants require further investigation for most ...
Pilar L. Maia‐ Braga +14 more
wiley +1 more source
Registration and Voting Among Americans Ages 18-29 [PDF]
, 2008 Young Americans ages 18-29 appear to be registering and voting at significantly higher rates than in recent elections. If further research bears this it out, it will be a welcome development given that young Americans are underrepresented in the ...
Erin Ferns, Ian Nunley
core
Ecography, EarlyView.Correlative species distribution models (SDMs) are quantitative tools in biogeography and macroecology. Building upon the ecological niche concept, they correlate environmental covariates to species presence to model habitat suitability and predict species distributions.
Moritz Klaassen +3 more
wiley +1 more source
Fern Habitats and Rare Ferns in Oklahoma
Oklahoma Native Plant Record, 2008 This paper features some of the more common fern habitats in Oklahoma and provides information on four rare Oklahoma ferns from two fern families: Aspleniaceae and Pteridaceae. Surprisingly, ferns can be found in a variety of habitats across Oklahoma.
Bruce A. Smith
doaj +1 more source
ESC Heart Failure, Volume 12, Issue 2, Page 1141-1150, April 2025.Abstract Background Arterial stiffness is a crucial factor in determining an increase in systolic blood pressure and pulse pressure and can also predict the development of cardiovascular disease (CVD). The purpose of this study was to examine the relationship between arterial stiffness and future CVD.
Susan Darroudi +10 more
wiley +1 more source
Squalene Cyclases and Cycloartenol Synthases from Polystichum polyblepharum and Six Allied Ferns
Molecules, 2018 Ferns are the most primitive of all vascular plants. One of the characteristics distinguishing them from flowering plants is its triterpene metabolism. Most cyclic triterpenes in ferns are hydrocarbons derived from the direct cyclization of squalene by ...
Junichi Shinozaki +2 more
doaj +1 more source
International Journal of Finance &Economics, EarlyView.ABSTRACT We use foreign trade data on both imports and exports of goods and services among a group of 15 advanced economies to determine the incomes and price elasticities of demand for exports and imports of goods, services and goods and services combined in the long run.
Tjeerd M. Boonman +2 more
wiley +1 more source
, 1995 In 1989, a systematic evaluation of woody and herbaceous perennial landscape plants was begun at the University of Alaska Fairbanks Georgeson Botanical Garden (64°51’N, 147°52’W).
Barbour, Edie +4 more
core
Checklist of the Pteridophytes of Aguascalientes, Mexico [PDF]
, 2002 Ferns and fern allies from Agu ascalientes, Mexico were s tudied. Fifty-five localities distributed in all municipios of the state were surveyed.
González-Adame, Gabriel +1 more
core +3 more sources