Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2005.01.012 |
Mesquite (Prosopis glandulosa) germination and survival in black-grama (Bouteloua eriopoda) grassland: relations between microsite and heteromyid rodent (Dipodomys spp.) impact | |
Duval, BD; Jackson, E; Whitford, WG | |
通讯作者 | Duval, BD |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
出版年 | 2005 |
卷号 | 62期号:4页码:541-554 |
英文摘要 | We conducted experiments to examine microsite and rodent influence on mesquite (Prosopis glandulosa) germination and survival in Chihuahuan Desert black-grama (Bouteloua eriopoda) grassland. Simulated caches with mesquite seeds were placed in undisturbed grassland, burned grassland patches with reduced grass cover, and on the periphery of kangaroo rat mounds. Rodent access to cached seeds was controlled by covering half of the caches with mesh domes. Kangaroo rats destroyed citing pats containing scarified mesquite seeds and excavated all seeds in simulated caches during a year in which no grasses or forbs set seed. Germination was the highest ill unburned grassland, but over-winter survival was only observed across experiments in burned grassland microsites. A large proportion of seed caches were excavated (1.1-5.5% of the rodent-excluded caches and between 15.6% and 21.1% of the control caches). There were seasonal differences in numbers of emergent seedlings, with a peak in September 2002 following late summer rains. There were no significant differences in numbers of germinants in burned and unburned grassland microsites, but significantly Fewer mesquite seeds germinated on banner-tail kangaroo rat Mounds. Caches excavated by rodents yielded 46.6% of germinants. This Study suggests that scarification of mesquite seeds is not necessary for germination and heteromyid rodents may be responsible for increased mesquite density in grasslands with some mature mesquite plants. The data also suggest that competition between mesquite seedlings and grasses in black-grama grassland is weak because of the physical characteristics of this system. (c) 2005 Elsevier Ltd. All rights reserved. |
英文关键词 | banner-tail kangaroo rats black-grama grasslands Bouteloua eriopoda fire germination heteromyid rodents mesquite Prosopis glandulosa |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000229985700002 |
WOS关键词 | KANGAROO RAT MOUNDS ; SOUTHERN NEW-MEXICO ; DESERT-GRASSLAND ; COMPETITION ; GROWTH ; ESTABLISHMENT ; SHRUBLAND ; GRANIVORY ; DENSITY ; HISTORY |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/149467 |
作者单位 | (1)New Mexico State Univ, Dept Fishery & Wildlife Sci, Las Cruces, NM 88001 USA;(2)New Mexico State Univ, USDA ARS, Las Cruces, NM 88001 USA;(3)Elmendorf AFB, Titan Corp, Anchorage, AK USA |
推荐引用方式 GB/T 7714 | Duval, BD,Jackson, E,Whitford, WG. Mesquite (Prosopis glandulosa) germination and survival in black-grama (Bouteloua eriopoda) grassland: relations between microsite and heteromyid rodent (Dipodomys spp.) impact[J]. New Mexico State University,2005,62(4):541-554. |
APA | Duval, BD,Jackson, E,&Whitford, WG.(2005).Mesquite (Prosopis glandulosa) germination and survival in black-grama (Bouteloua eriopoda) grassland: relations between microsite and heteromyid rodent (Dipodomys spp.) impact.JOURNAL OF ARID ENVIRONMENTS,62(4),541-554. |
MLA | Duval, BD,et al."Mesquite (Prosopis glandulosa) germination and survival in black-grama (Bouteloua eriopoda) grassland: relations between microsite and heteromyid rodent (Dipodomys spp.) impact".JOURNAL OF ARID ENVIRONMENTS 62.4(2005):541-554. |
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