Zobrazeno 1 - 10
of 40
pro vyhledávání: '"S. Catovsky"'
NITROGEN-INDUCED CHANGES IN SEEDLING REGENERATION AND DYNAMICS OF MIXED CONIFER–BROAD-LEAVED FORESTS
Publikováno v:
Ecological Applications. 12:1611-1625
Most research on forest dynamics has focused on species' light requirements as the major driver for successional change. However, soil resource availability may modify seedling responses to light and ultimately alter the course of succession. In the
Feedbacks between canopy composition and seedling regeneration in mixed conifer broad-leaved forests
Autor:
F. A. Bazzaz, S. Catovsky
Publikováno v:
Oikos. 98:403-420
To address the role of canopy-seedling feedbacks in the structure and dynamics of mixed conifer broad-leaved forests in the eastern US, we monitored seedling regeneration patterns and environmental conditions in the understorey of stands dominated by
Autor:
S. Catovsky, Fakhri A. Bazzaz
Publikováno v:
Ecological Applications. 12:1056-1070
While we have a good mechanistic understanding of effects of light avail- ability on tree seedling regeneration in forests, we know little of the processes controlling seedling responses to changes in nutrient availability in the understory (low ligh
Publikováno v:
Canadian Journal of Forest Research. 32:295-309
We used sap flow as a measure of whole-tree function to examine how coniferous and broad-leaved species in mixed temperate forests differ in canopy-level transpiration and photosynthetic rates. We used heat dissipation probes to measure whole-tree sa
Autor:
S Catovsky, F A Bazzaz
Publikováno v:
Canadian Journal of Forest Research. 30:100-111
Changes in forest species composition could influence ecosystem carbon uptake rates. To understand how species differed in their contributions to canopy photosynthesis, we investigated how the dominant coniferous (eastern hemlock, Tsuga canadensis (L
Autor:
Fakhri A. Bazzaz, S. Catovsky
Publikováno v:
Journal of Ecology. 88:100-112
Summary 1 When a species influences conditions at a site to promote recruitment of conspecifics, the community may remain dominated by that species until the next major disturbance. We examined the occurrence of possible mechanisms for such a positiv
Autor:
S. Catovsky, Fakhri A. Bazzaz
Publikováno v:
Global Change Biology. 5:507-518
Increased levels of atmospheric CO2 may alter the structure and composition of plant communities by affecting how species respond to their physical and biological environment. We investigated how elevated CO2 influenced the response of paper birch (
Autor:
S. Catovsky, V. B. Schini, William Durante, Paul M. Vanhoutte, Timothy Scott-Burden, JG White, Andrew I. Schafer, Michael H. Kroll
Publikováno v:
Blood. 83:1831-1838
We have investigated the role of platelets in regulating the hemostatic and vasomotor properties of vascular smooth muscle. Experiments were performed to examine the effect of the releasate from activated platelets on the production of nitric oxide f
Autor:
W, Durante, V B, Schini, M H, Kroll, S, Catovsky, T, Scott-Burden, J G, White, P M, Vanhoutte, A I, Schafer
Publikováno v:
Blood. 83:1831-1838
We have investigated the role of platelets in regulating the hemostatic and vasomotor properties of vascular smooth muscle. Experiments were performed to examine the effect of the releasate from activated platelets on the production of nitric oxide f
Publikováno v:
Circulation Research. 74:24-32
Experiments were designed to examine whether or not insulin-like growth factor I (IGF-I), which is produced by vascular cells in response to injury, affects the production of nitric oxide evoked by the inducible nitric oxide synthase in cultures of s