Arid
DOI10.1007/s00442-012-2512-8
Provisioning of bioavailable carbon between the wet and dry phases in a semi-arid floodplain
Baldwin, Darren S.1,2; Rees, Gavin N.1,2; Wilson, Jessica S.1; Colloff, Matthew J.3; Whitworth, Kerry L.1; Pitman, Tara L.1; Wallace, Todd A.1,2,4
通讯作者Baldwin, Darren S.
来源期刊OECOLOGIA
ISSN0029-8549
出版年2013
卷号172期号:2页码:539-550
英文摘要

Ecosystem functioning on arid and semi-arid floodplains may be described by two alternate traditional paradigms. The pulse-reserve model suggests that rainfall is the main driver of plant growth and subsequent carbon and energy reserve formation in the soil of arid and semi-arid regions. The flood pulse concept suggests that periodic flooding facilitates the two-way transfer of materials between a river and its adjacent floodplain, but focuses mainly on the period when the floodplain is inundated. We compared the effects of both rainfall and flooding on soil moisture and carbon in a semi-arid floodplain to determine the relative importance of each for soil moisture recharge and the generation of a bioavailable organic carbon reserve that can potentially be utilised during the dry phase. Flooding, not rainfall, made a substantial contribution to moisture in the soil profile. Furthermore, the growth of aquatic macrophytes during the wet phase produced at least an order of magnitude more organic material than rainfall-induced pulse-reserve responses during the dry phase, and remained as recognizable soil carbon for years following flood recession. These observations have led us to extend existing paradigms to encompass the reciprocal provisioning of carbon between the wet and dry phases on the floodplain, whereby, in addition to carbon fixed during the dry phase being important for driving biogeochemical transformations upon return of the next wet phase, aquatic macrophyte carbon fixed during the wet phase is recognized as an important source of energy for the dry phase. Reciprocal provisioning presents a conceptual framework on which to formulate questions about the resistance and ecosystem resilience of arid and semi-arid floodplains in the face of threats like climate change and alterations to flood regimes.


英文关键词Pulse-reserve Flood pulse concept Soil carbon Ecosystem resilience Rainfall
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000319077100023
WOS关键词EUCALYPTUS-CAMALDULENSIS FOREST ; MAJOR RIVER SYSTEM ; ORGANIC-MATTER ; FOOD WEBS ; MURRUMBIDGEE RIVER ; NUTRIENT DYNAMICS ; PLANT-RESPONSES ; ARID AUSTRALIA ; RIPARIAN ZONES ; WATER-QUALITY
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179062
作者单位1.La Trobe Univ, Murray Darling Freshwater Res Ctr, Wodonga, Vic 3689, Australia;
2.La Trobe Univ, CSIRO Land & Water, Wodonga, Vic 3689, Australia;
3.CSIRO Ecosyst Sci, Canberra, ACT 2601, Australia;
4.Univ Adelaide, Water Res Ctr, Adelaide, SA 5005, Australia
推荐引用方式
GB/T 7714
Baldwin, Darren S.,Rees, Gavin N.,Wilson, Jessica S.,et al. Provisioning of bioavailable carbon between the wet and dry phases in a semi-arid floodplain[J]. Commonwealth Scientific and Industrial Research Organisation,2013,172(2):539-550.
APA Baldwin, Darren S..,Rees, Gavin N..,Wilson, Jessica S..,Colloff, Matthew J..,Whitworth, Kerry L..,...&Wallace, Todd A..(2013).Provisioning of bioavailable carbon between the wet and dry phases in a semi-arid floodplain.OECOLOGIA,172(2),539-550.
MLA Baldwin, Darren S.,et al."Provisioning of bioavailable carbon between the wet and dry phases in a semi-arid floodplain".OECOLOGIA 172.2(2013):539-550.
条目包含的文件
文件名称/大小 资源类型 版本类型 开放类型 使用许可
Provisioning of bioa(651KB)期刊论文出版稿开放获取CC BY-NC-SA浏览
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
[Baldwin, Darren S.]的文章
[Rees, Gavin N.]的文章
[Wilson, Jessica S.]的文章
百度学术
百度学术中相似的文章
[Baldwin, Darren S.]的文章
[Rees, Gavin N.]的文章
[Wilson, Jessica S.]的文章
必应学术
必应学术中相似的文章
[Baldwin, Darren S.]的文章
[Rees, Gavin N.]的文章
[Wilson, Jessica S.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Provisioning of bioavailable carbon between the wet and dry phases in a semi-arid floodplain.pdf
格式: Adobe PDF
此文件暂不支持浏览

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。