Ten Years After: Stream Habitat Restoration Project in Retrospect

Author(s):  
F. Douglas Shields, Jr. ◽  
Scott Knight
Author(s):  
Michael Gritzuk ◽  
Paul Kinshella ◽  
Aimee Conroy ◽  
Will Doyle ◽  
Andy Richardson

2016 ◽  
Vol 73 (12) ◽  
pp. 1733-1741 ◽  
Author(s):  
Pauliina Louhi ◽  
Teppo Vehanen ◽  
Ari Huusko ◽  
Aki Mäki-Petäys ◽  
Timo Muotka

The growing concern on declining salmonid populations has resulted in numerous restoration projects with variable responses worldwide. In this spatially replicated multiyear study, we assessed the long-term (12 years postrestoration) effects of in-stream habitat restoration (i.e., addition of boulders or large woody debris (LWD) together with boulders) on densities of three age-classes of juvenile brown trout (Salmo trutta) in six forest streams in northern Finland. LWD combined with boulders was more beneficial, particularly for the larger trout (age-2 and older), than were boulder structures alone, indicating that the more diverse habitat created by LWD may have provided a safeguard against drought for the larger fish. Density of age-0+ trout showed a significant long-term increase in boulder-restored sections, providing evidence that log structures may need to be complemented by stony enhancement structures to guarantee the availability of suitable stream habitat for all trout age-classes. As trout densities are known to exhibit inherently wide interannual variability that tracks climatically induced hydrological variation, long-term postrestoration monitoring that encompasses extreme hydrological events is critical for evaluating the success of restoration projects.


2015 ◽  
Vol 2 (4) ◽  
pp. 647-668 ◽  
Author(s):  
Bobbie Swinson ◽  
Kristan Cockerill ◽  
Jeffrey Colby ◽  
Shea Tuberty ◽  
Chuanhui Gu

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