Simulated acid rain effects on fine roots, ectomycorrhizae, microorganisms, and invertebrates in pine forests of the southern United States

1992 ◽  
Vol 61 (3-4) ◽  
pp. 269-278 ◽  
Author(s):  
R. J. Esher ◽  
D. H. Marx ◽  
S. J. Ursic ◽  
R. L. Baker ◽  
L. R. Brown ◽  
...  
Keyword(s):  
United States ◽  
Acid Rain ◽  
Fine Roots ◽  
Simulated Acid Rain ◽  
Pine Forests ◽  
Southern United States

Influence of simulated acid rain on the flowering dogwood (Cornusflorida) leaf surface

1994 ◽  
Vol 24 (5) ◽  
pp. 1058-1062 ◽  
Author(s):  
Daniel A. Brown ◽  
Mark T. Windham ◽  
Robert L. Anderson ◽  
Robert N. Trigiano
Keyword(s):  
United States ◽  
Acid Rain ◽  
Leaf Surface ◽  
Simulated Acid Rain ◽  
Eastern United States ◽  
Flowering Dogwood ◽  
Simulated Rain ◽  
Decreasing Ph ◽  
One Year ◽  
Scanning Electron

Acidic rainfall has the potential to influence anthracnose incidence and severity in flowering dogwood (Cornusflorida L.) of the eastern United States. One-year-old, nursery-grown flowering dogwood seedlings were exposed to 1 cm of simulated rain 10 times over a 42-day period in 1990. Simulated rains were composed of a mixture of salts typical of ambient rainfall in the eastern United States and pH was adjusted to 5.5, 4.5, 3.5, and 2.5 with sulfuric and nitric acids. Samples were cut from the leaf tip, margin, and midvein of rain-treated trees and prepared for scanning electron microscopy. Cuticular cracking, desiccation, and erosion of trichome surfaces was observed in response to acid rain treatment. Increased degradation of dogwood trichomes was observed with decreasing pH for all samples. Cuticular erosion due to acid rain has the potential to predispose dogwoods in the eastern United States to anthracnose caused by Disculadestructiva sp.nov. (Red.) and an unnamed Discula sp.

APPLICATION OF ELIMINADE™ PARASITOID FOOD TO BOLES AND CROWNS OF PINES (PINACEAE) INFESTED WITH DENDROCTONUS FRONTALIS (COLEOPTERA: SCOLYTIDAE)

2000 ◽  
Vol 132 (6) ◽  
pp. 983-985 ◽  
Author(s):  
Fred M. Stephen ◽  
Lloyd E. Browne
Keyword(s):  
United States ◽  
Control Strategy ◽  
Dendroctonus Frontalis ◽  
Pine Forests ◽  
Southern Pine Beetle ◽  
Southern United States ◽  
Southern Pine ◽  
Female Adult ◽  
Pine Beetle

The southern pine beetle, Dendroctonus frontalis Zimmermann, is native to pine forests of the southern United States. We describe here techniques for enhancing parasitoid efficacy by direct feeding of parasitoid adults. Our recent research suggests that feeding by female adult D. frontalis parasitoids is important for increased longevity (Mathews and Stephen 1997, 1999; Stephen et al. 1997), and we documented that, with parasitoid feeding, egg resorption decreases and development of new immature eggs increases (Hanano 1996). We suspect that food for D. frontalis parasitoids, in the form of nectar, pollen, or honeydew, is not always available in the forest. We are developing a commercial D. frontalis control strategy based on this assumption.

Innovation and forest industry: domesticating the pine forests of the southern United States, 1920–1999

2003 ◽  
Vol 5 (4) ◽  
pp. 407-419 ◽  
Author(s):  
John A Stanturf ◽  
Robert C Kellison ◽  
F.S Broerman ◽  
Stephen B Jones
Keyword(s):  
United States ◽  
Pine Forests ◽  
Southern United States ◽  
Forest Industry
Sign in / Sign up

Export Citation Format

Share Document