The Ecology of a Tropical Rain Forest: Seasonal Rhythms and Long Term Changes.

1984 ◽  
Vol 21 (2) ◽  
pp. 720
Author(s):  
E. Broadhead ◽  
Egbert G. Leigh ◽  
A. S. Rand ◽  
D. M. Windsor
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Seasonal Rhythms ◽  
Long Term Changes

Age and Long-term Growth of Trees in an Old-growth Tropical Rain Forest, Based on Analyses of Tree Rings and 14C1

Biotropica ◽  
2003 ◽  
Vol 35 (3) ◽  
pp. 306-317 ◽  
Author(s):  
Esther Fichtler ◽  
Deborah A. Clark ◽  
Martin Worbes
Keyword(s):  
Tree Rings ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Old Growth

scholarly journals LONG-TERM SURVIVORSHIP AND CROWN AREA DYNAMICS OF TROPICAL RAIN FOREST CANOPY TREES

Ecology ◽  
2000 ◽  
Vol 81 (2) ◽  
pp. 585-597 ◽  
Author(s):  
Stanley R. Herwitz ◽  
Robert E. Slye ◽  
Stephen M. Turton
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Forest Canopy ◽  
Crown Area ◽  
Canopy Trees

LIGHT-INDUCED RHYTHMS OF PROLACTIN SECRETION IN THE RAM AND THE EFFECT OF CRANIAL SYMPATHECTOMY

1979 ◽  
Vol 91 (3) ◽  
pp. 421-427 ◽  
Author(s):  
G. A. Lincoln
Keyword(s):  
Prolactin Secretion ◽  
Plasma Prolactin ◽  
Hormone Concentration ◽  
Short Term ◽  
Seasonal Rhythms ◽  
Artificial Lighting ◽  
Long Term Changes ◽  
Cervical Ganglia ◽  
Short Days

ABSTRACT Four Soay rams cranially sympathectomised by removal of the superior cervical ganglia were housed alongside 4 control rams in an artificial lighting regime of alternating 16 week periods of short days (8L: 16D) and long days (16L: 8D) for 2 years. The variations in the plasma prolactin concentration revealed that while the control animals adjusted both the short term (diurnal) and long term (seasonal) rhythms in prolactin secretion in response to the changes in daylength, the ganglionectomised rams failed to respond. These sympathectomised animals continued to show long term changes in the circulating level of prolactin however and during the periods of hypersecretion a conspicuous diurnal rhythm in the hormone concentration was apparent.

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