Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1071/MF09090 |
Are alien fish disadvantaged by extremely variable flow regimes in arid-zone rivers? | |
Costelloe, J. F.1; Reid, J. R. W.2,3; Pritchard, J. C.3; Puckridge, J. T.3; Bailey, V. E.4; Hudson, P. J.3 | |
通讯作者 | Costelloe, J. F. |
来源期刊 | MARINE AND FRESHWATER RESEARCH |
ISSN | 1323-1650 |
EISSN | 1448-6059 |
出版年 | 2010 |
卷号 | 61期号:8页码:857-863 |
英文摘要 | The proliferation of alien fish in dryland rivers potentially obstructs the maintenance of river health. Modified flow regimes are hypothesised to facilitate invasions by alien fish but in unregulated dryland rivers, large floods provide a recruitment advantage for native over alien species whereas droughts favour alien species. We tested these hypotheses by using data from a 3-year study (2000-2003) of fish populations in the unmodified rivers of the Lake Eyre Basin (LEB) of Australia. Results from a lower reach of Cooper Creek were compared with those of an earlier study (1986-1992). During both periods, large floods occurred, with return periods ranging from >1 in 5 to >1 in 25 years. In the lower Cooper, decreases in the abundance of alien species relative to native species, and dramatic increases in recruitment of native species, were observed during a 1-3-year period following large floods. In two other rivers in 2000-2003, there was no statistically significant change in the already low abundances of alien species. We suggest that the naturally variable hydrological regimes and native-dominant fish assemblages of the unregulated LEB rivers afford some resistance to the establishment and proliferation of alien fish through flood and drought conditions. |
英文关键词 | arid zone Cooper Creek Diamantina River dryland rivers flow variability habitat Neales River recruitment |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000280848200004 |
WOS关键词 | GAMBUSIA-HOLBROOKI ; FLOODPLAIN RIVER ; NATIVE FISHES ; AUSTRALIA ; CONSEQUENCES ; CONSERVATION ; PERSISTENCE ; ECOLOGY ; SYSTEMS |
WOS类目 | Fisheries ; Limnology ; Marine & Freshwater Biology ; Oceanography |
WOS研究方向 | Fisheries ; Marine & Freshwater Biology ; Oceanography |
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/2XILL650/165618 |
作者单位 | 1.Univ Melbourne, Dept Civil & Environm Engn, Melbourne, Vic 3010, Australia; 2.CSIRO Sustainable Ecosyst, Canberra, ACT 2601, Australia; 3.Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia; 4.Environm Protect Agcy, Longreach, Qld 4730, Australia |
推荐引用方式 GB/T 7714 | Costelloe, J. F.,Reid, J. R. W.,Pritchard, J. C.,et al. Are alien fish disadvantaged by extremely variable flow regimes in arid-zone rivers?[J]. Commonwealth Scientific and Industrial Research Organisation,2010,61(8):857-863. |
APA | Costelloe, J. F.,Reid, J. R. W.,Pritchard, J. C.,Puckridge, J. T.,Bailey, V. E.,&Hudson, P. J..(2010).Are alien fish disadvantaged by extremely variable flow regimes in arid-zone rivers?.MARINE AND FRESHWATER RESEARCH,61(8),857-863. |
MLA | Costelloe, J. F.,et al."Are alien fish disadvantaged by extremely variable flow regimes in arid-zone rivers?".MARINE AND FRESHWATER RESEARCH 61.8(2010):857-863. |
条目包含的文件 | 条目无相关文件。 |
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。