Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1034/j.1600-0706.2001.950113.x |
Biodiversity effects of elevated CO2 in species-rich model communities from the semi-arid Negev of Israel | |
Grunzweig, JM; Korner, C | |
通讯作者 | Grunzweig, JM |
来源期刊 | OIKOS
![]() |
ISSN | 0030-1299 |
出版年 | 2001 |
卷号 | 95期号:1页码:112-124 |
英文摘要 | Species-specific responses to atmospheric CO2 enrichment may affect biodiversity,,which in turn may alter ecosystem functioning. Here we have explored biodiversity effects in model assemblages of semi-arid grassland of the northern Negev, Israel, at 280 ppm (pre-industrial era), 440 ppm (early 21st century) and 600 ppm CO2 (mid to late 21st century). Thirty-two mostly annual species were grown together in large containers (ca 400 kg each) on native soil and under a dynamic simulation of the Negev winter climate, CO2 enrichment increased concentrations of total non-structural carbohydrates and C/N ratios, and reduced specific leaf area and nitrogen concentrations in leaves of all species. In contrast to these uniform CO2 effects on leaf quality. biomass and reproductive output remained unchanged in most species, and varied greatly among the few responsive ones ( - 80 to + 145%). Biomass was significantly increased at elevated CO2 in Onobrychis crista-galli (one of the six legume species) and was reduced in Biscutella didyma (Brassicaceae). Seed yield increased in three out of six legumes and in the root hemiparasite Parentucellia flaviflora. and decreased in the grass Aegilops peregrina. Fruit dry matter tended to be reduced in two Brassicaceae. Onobrychis, the largest and most responsive species present, was the most ’mesic’ legume, and might have profited most from the higher soil moisture induced by CO2 enrichment. The significant CO2 response of only 5-6 out of 32 species, in particular their altered seed yield, suggests a potential shift in biodiversity. In a future CO2-enriched atmosphere. ’mesic’ legumes and root hemiparasites might be favored. while some Brassicaceae and grasses might decline. As indicated by significant 280- vs 440-ppm differences. reductions in leaf nitrogen concentration of grasses and legumes are likely to be under way right now, and may negatively affect grazers. Altered seed yields were more pronounced between 440 and 600 ppm, suggesting that these changes could intensify as the atmospheric CO2 concentration continues to rise. |
类型 | Article |
语种 | 英语 |
国家 | Switzerland |
收录类别 | SCI-E |
WOS记录号 | WOS:000172338600013 |
WOS关键词 | SYMBIOTIC N-2 FIXATION ; CALCAREOUS GRASSLAND ; ALPINE GRASSLAND ; ATMOSPHERIC CO2 ; STRIGA-HERMONTHICA ; PARASITIC PLANT ; GROWTH ; REPRODUCTION ; RESPONSES ; BIOMASS |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/141557 |
作者单位 | (1)Univ Basel, Inst Bot, CH-4056 Basel, Switzerland |
推荐引用方式 GB/T 7714 | Grunzweig, JM,Korner, C. Biodiversity effects of elevated CO2 in species-rich model communities from the semi-arid Negev of Israel[J],2001,95(1):112-124. |
APA | Grunzweig, JM,&Korner, C.(2001).Biodiversity effects of elevated CO2 in species-rich model communities from the semi-arid Negev of Israel.OIKOS,95(1),112-124. |
MLA | Grunzweig, JM,et al."Biodiversity effects of elevated CO2 in species-rich model communities from the semi-arid Negev of Israel".OIKOS 95.1(2001):112-124. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Grunzweig, JM]的文章 |
[Korner, C]的文章 |
百度学术 |
百度学术中相似的文章 |
[Grunzweig, JM]的文章 |
[Korner, C]的文章 |
必应学术 |
必应学术中相似的文章 |
[Grunzweig, JM]的文章 |
[Korner, C]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。