Effect of Environmental Conditions on Survival and Growth of Forest Tree Seedlings under Field Conditions in the Piedmont Region of North Carolina

Ecology ◽  
1953 ◽  
Vol 34 (4) ◽  
pp. 667-688 ◽  
Author(s):  
William K. Ferrill
Keyword(s):  
North Carolina ◽  
Environmental Conditions ◽  
Forest Tree ◽  
Field Conditions ◽  
Tree Seedlings ◽  
Survival And Growth ◽  
Piedmont Region

scholarly journals Effect of initial edaphic factors on survival and growth of forest tree seedlings in Ranchi, Jharkhand

2020 ◽  
Vol 8 (6) ◽  
pp. 1392-1396
Author(s):  
Ashok Kumar Mahato ◽  
RB Sah ◽  
Srishti Dipriya Minz ◽  
Alok Kumar Singh
Keyword(s):  
Forest Tree ◽  
Tree Seedlings ◽  
Edaphic Factors ◽  
Survival And Growth

Development of Efficient Production Systems for Forest Tree Seedlings

2019 ◽  
Vol 73 (2) ◽  
pp. 120-122
Author(s):  
Naoki Negishi ◽  
Katsuhiko Nakahama ◽  
Nobuyuki Urata ◽  
Toshiaki Tanabe
Keyword(s):  
Production Systems ◽  
Forest Tree ◽  
Efficient Production ◽  
Tree Seedlings

scholarly journals Fire suppression and seed dispersal play critical roles in the establishment of tropical forest tree species in southeastern Africa

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tomohiro Fujita
Keyword(s):  
Seed Dispersal ◽  
Tree Species ◽  
Seedling Survival ◽  
Fire Suppression ◽  
Forest Tree ◽  
Tree Seedlings ◽  
Seedling Mortality ◽  
Forest Tree Species ◽  
Seed Deposition ◽  
Syzygium Guineense

AbstractThis study examined the mechanisms of facilitation and importance of seed dispersal during establishment of forest tree species in an Afrotropical woodland. Seedling survival of Syzygium guineense ssp. afromontanum was monitored for 2.5 years at four different microsites in savannah woodland in Malawi (southeastern Africa) under Ficus natalensis (a potential nurse plant), Brachystegia floribunda (a woodland tree), Uapaca kirkiana (a woodland tree), and at a treeless site. The number of naturally established forest tree seedlings in the woodland was also counted. Additionally, S. guineense ssp. afromontanum seed deposition was monitored at the four microsites. Insect damage (9% of the total cause of mortality) and trampling by ungulates (1%) had limited impact on seedling survival in this area. Fire (43%) was found to be the most important cause of seedling mortality and fire induced mortality was especially high under U. kirkiana (74%) and at treeless site (51%). The rate was comparatively low under F. natalensis (4%) and B. floribunda (23%), where fire is thought to be inhibited due to the lack of light-demanding C4 grasses. Consequently, seedling survival under F. natalensis and B. floribunda was higher compared with the other two microsites. The seedling survival rate was similar under F. natalensis (57%) and B. floribunda (59%). However, only a few S. guineense ssp. afromontanum seedlings naturally established under B. floribunda (25/285) whereas many seedlings established under F. natalensis (146/285). These findings indicate that the facilitative mechanism of fire suppression is not the only factor affecting establishment. The seed deposition investigation revealed that most of the seeds (85%) were deposited under F. natalensis. As such, these findings suggest that in addition to fire suppression, dispersal limitations also play a role in forest-savannah dynamics in this region, especially at the community level.

Copper Specimens from Yadkin River in Piedmont, North Carolina

1953 ◽  
Vol 18 (4) ◽  
pp. 389-389 ◽  
Author(s):  
Douglas L. Rights
Keyword(s):  
North Carolina ◽  
Piedmont Region

In the upper Piedmont region of North Carolina, along the Yadkin River, specimens of copper have been found at three village sites.As illustrated, the largest specimen appears to be a copper breast plate. Five tubular beads are represented. Seven pieces are roughly cone-shaped and could be classified as decorative bangles, although those which are more proportional and smoothly finished could have been used as arrow tips. The two triangular pierced pendants were found at sites forty miles apart. The copper hawk's bell, a trader's piece evidently of English origin, still rings merrily when shaken. A broken half of the same design was found forty miles away at a other site. Two fragments of unfinished copper are illustrated (Fig. 135).

Winter Survival and Growth of Chondrus crispus in Onshore Culture Tanks

1986 ◽  
Vol 43 (2) ◽  
pp. 263-268 ◽  
Author(s):  
Peter F. Shacklock ◽  
James S. Craigie
Keyword(s):  
Environmental Conditions ◽  
Stocking Density ◽  
Ice Cover ◽  
Winter Survival ◽  
Chondrus Crispus ◽  
Eastern Canada ◽  
Net Production ◽  
Survival And Growth ◽  
Reliable Methods ◽  
Natural Irradiance

Commercial aquaculture of Chondrus crispus in eastern Canada required the development of reliable methods for ensuring the winter survival of a healthy, vegetative inoculum. Two procedures were investigated. Agitated cultures of C. crispus (stocking density <6 kg∙m−2) in running seawater grew at average rates of 0.21–0.34 kg∙m−2∙wk−1 during two winters under natural irradiance. Cultures maintained in undisturbed, outdoor tanks of seawater over three winters showed little or no net production; however, survival was excellent provided that the stocking density remained below approximately 10 kg∙m−2. The plants were capable of resuming growth when environmental conditions improved. We found no difference in the responses of the several haploid and diploid isolates examined. Large vegetative inocula required for commercial aquaculture can be maintained simply and reliably in tanks of clean seawater if they are undisturbed and an ice cover is allowed to form.

Sign in / Sign up

Export Citation Format

Share Document