Fluctuations in abundance and mortality of Carpinus caroliniana (American hornbeam) and the invasion of Sapium sebiferum (Chinese tallow)

[摘要] A bottomland hardwood forest stand located in east Texas experienced a hurricane-related flood event in 1989. After this event,Carpinus caroliniana Walt. had a large pulse in mortality, decreasing dramatically in abundance (47%) over a 5-year period. The decline was greater at low elevations suggesting that at least part of the mortality was related to flooding. The flood was the longest summer flood on record. The duration of this growing season flood may have been partly a consequence of upstream dam management.Linear regression showed that in areas where Carpinus death was greater, several sapling species had increases in basal area growth. The invasive species Sapium sebiferum (L.) Roxb. had the greatest increase. This suggests that the Carpinus death and concomitant increase in light availability resulted in accelerated invasion of this forest by Sapium.

[发布机构] Rice University

[效力级别] Forestry