Now showing items 11-20 of 64
Nitrate deposition in northern hardwood forests and the nitrogen metabolism of Acer saccharum marsh
(Springer-Verlag, 1996-10)
It is generally assumed that plant assimilation constitutes the major sink for anthropogenic Nitrate NO 3 − deposited in temperate forests because plant growth is usually limited by nitrogen (N) availability. Nevertheless, ...
Rates of fixation by lightning of carbon and nitrogen in possible primitive atmospheres
(Kluwer Academic Publishers; D. Reidel Publishing ; Springer Science+Business Media, 1981-12)
A thermochemical-hydrodynamic model of the production of trace species by electrical discharges has been used to estimate the rates of fixation of C and N by lightning in the primitive atmosphere. Calculations for various ...
Soil fungal-arthropod responses to Populus tremuloides grown under enriched atmospheric CO 2 under field conditions
(Blackwell Science Ltd, 1997-12)
Composition of the early Oligocene ocean from coral stable isotope and elemental chemistry
(Blackwell Science Ltd, 2004-04)
A sectioned and polished specimen of the coral Archohelia vicksburgensis from the early Oligocene Byram Formation (∼30 Ma) near Vicksburg, Mississippi, reveals 12 prominent annual growth bands. Stable oxygen isotopic ...
Book reviews
(Kluwer Academic Publishers; D. Reidel Publishing Company ; Springer Science+Business Media, 1987-06)
Why study fossils? Review of Evolutionary History of the Primates , by Frederick S. Szalay and Eric Delson. New York and London: Academic Press, 1979, 580 pp, $43
(Wiley Subscription Services, Inc., A Wiley Company, 1981)
No Abstract.
Anthropogenic N deposition and the fate of 15 NO 3 − in a northern hardwood ecosystem
(Kluwer Academic Publishers; Springer Science+Business Media, 2004-06)
Human activity has substantially increased atmospheric NO 3 − deposition in many regions of the Earth, which could lead to the N saturation of terrestrial ecosystems. Sugar maple ( Acer saccharum Marsh.) dominated northern ...
Biotic Control of Calcium Cycling in Northern Hardwood Forests: Acid Rain and Aging Forests
(Springer-Verlag; Springer-Verlag New York, Inc., 2003-06)
Populus tremuloides photosynthesis and crown architecture in response to elevated CO 2 and soil N availability
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1997-04)
We tested the hypothesis that elevated CO 2 would stimulate proportionally higher photosynthesis in the lower crown of Populus trees due to less N retranslocation, compared to tree crowns in ambient CO 2 . Such a response ...