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Accumulated Heating and Chilling Are Important Drivers of Forest Phenology and Productivity in the Algonquin-to-Adirondacks Conservation Corridor of Eastern North America
forest phenology productivity temperature random forest partial dependence
2024/1/10
Research Highlights: Forest phenology and productivity were responsive to seasonal heating and chilling accumulation, but responses differed across the temperature range. Background and Objectives: Te...
The Historical Complexity of Tree Height Growth Dynamic Associated with Climate Change in Western North America
height growth site index global climate change species range species characteristics species ecological amplitude geographic locations western North America
2023/12/1
The effect of climate on tree growth has received increased interest in the context of climate change. However, most studies have been limited geographically and with respect to species. Here, sixteen...
Warm oceans helped first human migration from Asia to North America（图）
Warm oceans first human migration Asia to North America
2020/12/31
New research reveals significant changes in the circulation of the North Pacific Ocean and their impact on the initial migration of humans from Asia to North America.The U.S. National Science Fou...
北美辞书学会（The Dictionary Society of North America，DSNA）
北美辞书学会 Dictionary Society of North America DSNA
2020/7/29
The Dictionary Society of North America was formed in 1975 to bring together people interested in dictionary making, study, collection, and use. Our more than 400 members who live in 40 countries arou...
Modeled changes in US sodium intake from reducing sodium concentrations of commercially processed and prepared foods to meet voluntary standards established in North America: NHANES
intake modeling national sodium food United States
2018/11/15
Background: Approximately 2 in 3 US adults have prehypertension or hypertension that increases their risk of cardiovascular disease. Reducing sodium intake can decrease blood pressure and prevent hype...
North America's freshwater lakes are getting saltier
North America freshwater lakes getting saltier
2017/4/27
North America's freshwater lakes are getting saltier due to development and exposure to road salt. A study of 371 lakes published today in the Proceedings of the National Academy of Sciences reports t...
SPE Health, Safety, Security, Environment, & Social Responsibility Conference – North America
Safety Security
2016/7/27
Since 1993, this conference has brought together HSE professionals for knowledge sharing, learning and networking. Experts from industry, government, and academia attend to share insights and best pra...
Well-preserved fossils show ostrich relatives lived in North America 50 million years ago
fossils ostrich relatives North America 50 million years ago
2016/7/15
Exceedingly well-preserved bird fossil specimens dating 50 million years represent a new species that is a previously unknown relative of the modern-day ostrich, according to a new paper co-authored b...
How Native American Agriculture Spread Bees in Pre-Columbian North America
Native American Agriculture Bees Pre-Columbian North America
2016/7/4
Squash was first domesticated in Mexico and is now found throughout North America (NA) along with Peponapis pruinosa, a pollen specialist bee species of the squash genus Cucurbita. The origin and spre...
Scientists have discovered the first-ever fossil evidence of monkeys from the North American landmass: a 21-million-year-old specimen that changes our understanding of the biological history of the co...
Multiaged silviculture in North America
multiaged silviculture North America diameter distribution
2015/3/16
Multiaged silviculture is highly variable across North America but a commonality is the ties to the negative exponential diameter distribution to guide stocking control. These methods have evolved in ...
It is now widely recognized that a crucial test for speaker independent recognition systems is their success in dealing with dialect diversity. Sociolinguistic research on linguistic change in progres...
The genera of diaspinae of North America and the genus lepidosaphes
genera of diaspinae North America genus lepidosaphes
2015/1/24
The genera of diaspinae of North America and the genus lepidosaphes.
A NEW SPECIES OF MOROPUS (MAMMALIA, PERISSODACTYLA, CHALICOTHERIODEA) IN THE BATESLAND FORMATION, GREAT PLAINS AREA OF NORTH AMERICA
Great Plains Batesland Formation Miocene
2015/1/4
The chalicothere Moropus was a rare perissodactyl present in the Great Plains region of North America through much of the Miocene. A temporal gap in named species of Moropus is present in the early He...
Ecology and Conservation of the Montane Forest Avian Community in Northeastern North America
blackpoll warbler climate change elevation gradient montane birds range shift recreational hiking
2014/12/9
Montane forests provide habitat for unique assemblages of flora and fauna that contribute significantly to a region’s biodiversity. Previous work indicates that montane forest ecosystems are exceeding...