To advance our understanding of phenological responses to climate change, we developed, calibrated, and validated process-based models of leaf unfolding for 22 North American tree species. Using daily meteorological data predicted by two scenarios (A2: +3.2 掳C and B2: +1 掳C) from the HadCM3...
Here, we review evidence for the factors underlying the historical and contemporary distributions of North American tree species and argue that a cohesive conceptual framework must be informed by an understanding of species ecological and evolutionary history. We further demonstrate that available evidence...
According to the Fact Sheet on American Elm - USDA Forest Service", Once a very popular and long-lived (300+ years) shade and street tree, American Elm suffered a dramatic decline with the introduction of Dutch elm disease, a fungus spread by a bark beetle. The wood of American Elm is...
Eucalyptus is a diverse genus of treeswhich dominate the tree flora of Australia with over 700 species. Eucalypts are found in almost every part of the continent, adapted to all climatic conditions. No other continent is so characterized by a single genus of tree as is Australia by Eucalyptus....
The disappearance of many North American megafauna at the end of the Pleistocene is a contentious topic. While the proposed causes for megafaunal extinction are varied, most researchers fall into three broad camps emphasizing human overhunting, climate c
Thousands of teaching photos of over 680 North American bird species; 900+ "test yourself" ID question photos; also Galapagos, Costa Rica, Ecuador
Tree Encyclopedia | Trees Index | Maple | Fruit Trees | Nut Trees Family Rutaceae – Cork & Citrus Plants in this family are herbs, shrubs, and trees with commonly odoriferous herbage comprising about 150 genera and 1,500 species; further characterized by the common occurrence of spines and ...
Thus, North American boreal forests declined in latitudinal distribution range driven by southern losses but became denser due to the tree cover gains in the northern interior. Fig. 2: Absolute tree cover changes of North American boreal forests from 2000–2019. a Tree cover changes based on ...
Tree-related microhabitats (hereafter, “TreMs”) are key components of forest biodiversity but they are still poorly known in North American hardwood forests. The spatial patterns of living trees bearing TreMs (hereafter, “TreM-trees”) also remain to
阅读理解Hundreds of native North American plants,often dismissed as weeds, deserve a lot more respect, according to a new study. These plants, distant cousins of foods like sunflowers and lettuce (), actually represent a botanical treasure now facing increased threats from climate change and habita...