Restoring mediterranean-climate rivers

被引:51
作者
Kondolf, G. Mathias [1 ]
Podolak, Kristen [1 ]
Grantham, Theodore E. [2 ]
机构
[1] Univ Calif Berkeley, Dept Landscape Architecture & Environm Planning, Berkeley, CA 94720 USA
[2] Univ Calif Davis, Ctr Watershed Sci, Davis, CA 95616 USA
关键词
Episodic channels; Mediterranean climate; Variable flow regime; River restoration; Channel migration zone; FRESH-WATER FISH; INSTREAM DIVERSIONS; FLOW REGIME; CALIFORNIA; RESTORATION; STREAMFLOW; BASIN; CONSERVATION; FRAMEWORK; IMPACTS;
D O I
10.1007/s10750-012-1363-y
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Mediterranean-climate rivers (med-rivers) have highly variable flow regimes, with large, periodic floods shaping the (often-braided) channels, which is different from stable humid-climate rivers, whose form may be dominated by the 1.5-year flood. There is a fundamental challenge in attempting to "restore" such variable, ever-changing, dynamic river systems, and the most effective restoration strategy is to set aside a channel migration zone within which the river can flood, erode, deposit, and migrate, without conflicting with human uses. An apparent cultural preference for stable channels has resulted in attempts to build idealized meandering channels, but these are likely to wash out during large, episodic floods typical of med-rivers. Med-rivers are more extensively dammed than their humid-climate counterparts, so downstream reaches are commonly deprived of high flows, which carry sediments, modify channel morphology, and maintain habitat complexity. Restoration of the entire pre-dam hydrograph without losing the benefits of the dam is impossible, but restoration of specific components of the natural hydrograph (to which native species are adapted) can restore some ecosystem components (such as native fish species) in med-rivers.
引用
收藏
页码:527 / 545
页数:19
相关论文
共 89 条
[1]   FRESH-WATER FISH AND THEIR CONSERVATION IN PORTUGAL [J].
ALMACA, C .
BIOLOGICAL CONSERVATION, 1995, 72 (02) :125-127
[3]  
[Anonymous], 2007, TERRITORIO FLUVIAL D
[4]  
[Anonymous], 1992, REST AQ EC
[5]  
[Anonymous], 1992, Fluvial processes in geomorphology. A Series of books in geology
[6]   INVASION RESISTANCE TO INTRODUCED SPECIES BY A NATIVE ASSEMBLAGE OF CALIFORNIA STREAM FISHES [J].
BALTZ, DM ;
MOYLE, PB .
ECOLOGICAL APPLICATIONS, 1993, 3 (02) :246-255
[7]   Reservoir-induced hydrological changes in the Ebro River basin (NE Spain) [J].
Batalla, RJ ;
Gómez, CM ;
Kondolf, GM .
JOURNAL OF HYDROLOGY, 2004, 290 (1-2) :117-136
[8]   Short-term climatic trends affect the temporal variability of macroinvertebrates in California 'Mediterranean' streams [J].
Beche, Leah A. ;
Resh, Vincent H. .
FRESHWATER BIOLOGY, 2007, 52 (12) :2317-2339
[9]   Hydrologic regime and the conservation of salmon life history diversity [J].
Beechie, Timothy ;
Buhle, Eric ;
Ruckelshaus, Mary ;
Fullerton, Aimee ;
Holsinger, Lisa .
BIOLOGICAL CONSERVATION, 2006, 130 (04) :560-572
[10]   Ecology - Synthesizing US river restoration efforts [J].
Bernhardt, ES ;
Palmer, MA ;
Allan, JD ;
Alexander, G ;
Barnas, K ;
Brooks, S ;
Carr, J ;
Clayton, S ;
Dahm, C ;
Follstad-Shah, J ;
Galat, D ;
Gloss, S ;
Goodwin, P ;
Hart, D ;
Hassett, B ;
Jenkinson, R ;
Katz, S ;
Kondolf, GM ;
Lake, PS ;
Lave, R ;
Meyer, JL ;
O'Donnell, TK ;
Pagano, L ;
Powell, B ;
Sudduth, E .
SCIENCE, 2005, 308 (5722) :636-637