| Main Title |
Effects of Summer Drought on the Water Relations, Physiology and Growth of Large and Small Plants of 'Prosopis glandulosa' and 'Larrea tridentata'. |
| Author |
de Soyza, A. G. ;
Whitford, W. G. ;
Virginia, R. A. ;
Reynolds, J. F. ;
|
| CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab. ;New Mexico State Univ., Las Cruces. Jornada Experimental Range. ;Dartmouth Coll., Hanover, NH. Environmental Studies Program. ;Duke Univ., Durham, NC. Dept. of Botany. |
| Publisher |
Jul 95 |
| Year Published |
1995 |
| Report Number |
EPA/600/A-95/137; |
| Stock Number |
PB96-117551 |
| Additional Subjects |
Drought tolerance ;
Physiological ecology ;
Shrubs ;
Meetings ;
Plants(Biology) ;
Water utilization ;
Plant physiology ;
Environmental effects ;
Photosynthesis ;
Plant growth ;
Climatic changes ;
Creosote bush ;
Mesquite ;
Ecological monitoring ;
Prosopis glandulosa ;
Larrea tridentata
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB96-117551 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
21p |
| Abstract |
Large and small plants of creosotebush and mesquite were subjected to drought during summer 1993. Large and small plants responded to drought with lowered xylem water potential and lowered photosynthetic gas exchange. Large plants appear to maintain a reduced but constant photosynthetic rate during drought and responded to precipitation with increased photosynthesis. However, small plants attempted to maintain a high photosynthetic rate throughout the season, responding less strongly to precipitation events, but probably depleting reserves more and causing photosynthesis to decline more when droughted. Our results suggest that larged, established plants are better able to withstand drought than are small, establishing shrubs. |
