Across a macro-ecological gradient forest competition is strongest at the most productive sites
نویسندگان
چکیده
منابع مشابه
Across a macro-ecological gradient forest competition is strongest at the most productive sites
We tested the hypothesis that the effect of forest basal area on tree growth interacts with macro-ecological gradients of primary productivity, using a large dataset of eucalypt tree growth collected across temperate and sub- tropical mesic Australia. To do this, we derived an index of inter-tree competition based on stand basal area (stand BA) relative to the climatically determined potential ...
متن کاملThe competition number of a generalized line graph is at most two
In 1982, Opsut showed that the competition number of a line graph is at most two and gave a necessary and sufficient condition for the competition number of a line graph being one. In this paper, we generalize this result to the competition numbers of generalized line graphs, that is, we show that the competition number of a generalized line graph is at most two, and give necessary conditions a...
متن کاملMacro forest transducers
Xml documents conceptually are not trees, but forests. Therefore, we extend the concept of macro tree transducers (mtt’s) to a transformation formalism of forests, macro forest transducers (mft’s). We show that mft’s form a strict superset of mtt’s operating on forests (represented as binary trees). On the other hand, the transformation of every mft can be simulated by the composition of two mt...
متن کاملIs Alaska’s Boreal Forest Now Crossing a Major Ecological Threshold?
Daniel H. Mann*§ Many boreal forests grow in regions where climate is now warming rapidly. Changes in T. Scott Rupp† these vast, cold forests have the potential to affect global climate because they store huge Mark A. Olson† and amounts of carbon and because the relative abundances of their different tree species Paul A. Duffy‡ influence how much solar radiation reflects back to space. Both the...
متن کاملGeochemical characterization of the forest loess soils along a precipitation gradient in Northern Iran
Introduction: The loess-paleosol sequences in Northern Iran are important archives represent several cycles of Quaternary climate change and can be used to complete the information gap on loess between Europe and central Asia. Loess geochemistry reflects paleoweathering conditions and it can be used to determine the nature and provenance of loess deposits. In the Caspian Lowlands, a pronounced...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Plant Science
سال: 2014
ISSN: 1664-462X
DOI: 10.3389/fpls.2014.00260