PARK MANAGEMENT OF EXOTIC PLANT-SPECIES - PROBLEMS AND ISSUES

被引：72

作者：

WESTMAN, WE

机构：

[1] Applied Science Division, Lawrence Berkeley Laboratory, Berkeley, California, 94720

来源：

CONSERVATION BIOLOGY | 1990年 / 4卷 / 03期

关键词：

D O I：

10.1111/j.1523-1739.1990.tb00286.x

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

Abstract: Vegetation management policies in public parks in the United States call for the removal of exotic species to the extent feasible. The underlying goal is to preserve samples of wilderness by restoring plant communities to the “natural state” that existed prior to extensive human influence. With limited budgets, park managers are necessarily selective in targeting exotic species for control. If the focus is on the more readily controlled species, however, park landscapes may gradually become populated by more resistant exotics Further, because plants exhibit some redundancy in ecosystem function, exotic plant species can substitute in part for natives in performing a range of ecosystem functions, including wildlife support and soil binding. Consequently the removal of exotics can result in significant perturbations to certain ecosystem functions during the period of transition to native cover. The individualistic paradigm of plant distribution implies that the impact of exotic plant species on invaded communities will vary. Choosing which species to remove requires careful evaluation of the impact of the removal on ecosystem structure and function. The effective balancing of park management goals for wilderness maintenance and recreational use requires clearer recognition of the adaptive response of ecosystems to invasion and a rethinking of the bases for prioritizing which species are to be removed. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：251 / 260

页数：10

共 65 条

[1]

Baker H.G., Patterns of plant invasions in North America, Ecology of biological invasions of North America and Hawaii, pp. 44-57, (1986)

[2]

Barbe D., The role of the California Department of Food and Agriculture, Fremontia, 13, pp. 13-14, (1985)

[3]

Barro S.C., Conard S.G., (1987)

[4]

Bazzaz F.A., Life history of colonizing plants: some demographic, genetic, and physiological features, Ecology of biological invasions of North America and Hawaii, pp. 96-110, (1986)

[5]

Bazzaz F.A., Experimental studies on the evolution of niche in successional plant populations, Colonization, succession and stability, pp. 245-272, (1987)

[6]

Billings W.D., Grasslands, The Earth in transition, (1990)

[7]

Bowman C., (1989)

[8]

Braithwaite R.W., Lonsdale W.M., Estbergs J.A., Alien vegetation and native biota in tropical Australia: the impact of Mimosa pigra, Biological Conservation, 48, pp. 189-210, (1989)

[9]

Cairns J., Restoring damaged ecosystems: is predisturbance condition a viable option, The Environmental Professional, 11, pp. 152-159, (1989)

[10]

Resource management directives for the California Department of Parks and Recreation, (1979)

← 1 2 3 4 5 6 7 →