Juvenile Fish Passage Through Culverts in Alaska: A Field Study
In the past, culvert design where fish passage was considered generally has been based on the weakest-swimming adult fish in a river system. It has also been recognized for some time that juvenile fish are very active throughout the year, moving upstream and downstream in response to a number of env...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/10368 2023-05-15T18:03:32+02:00 Juvenile Fish Passage Through Culverts in Alaska: A Field Study Kane, Douglas L. Belke, Charles E. Gieck, Robert E. Mclean, Robert F. 2000-06 http://hdl.handle.net/11122/10368 en_US eng http://hdl.handle.net/11122/10368 Culverts Fish Salmon Field Study Impact Environmental Design Mobility Technical Report 2000 ftunivalaska 2023-02-23T21:37:28Z In the past, culvert design where fish passage was considered generally has been based on the weakest-swimming adult fish in a river system. It has also been recognized for some time that juvenile fish are very active throughout the year, moving upstream and downstream in response to a number of environmental factors. In Alaska, many natal and nonnatal streams in southcentral and southeastern Alaska support both Chinook (Oncorhynchus tschawytscha (Walbaum)) and Coho (Oncorhynchus kisutch (Walbaum)) for one to three years, respectively, before they emigrate to sea. Are we restricting desirable habitat for these juvenile salmonids with hydraulic structures such as culverts? Unfortunately we have little information on either the behavior of juveniles in the vicinity of hydraulic structures or their swimming abilities. The objective of this study was to examine the behavior of juveniles when attempting to ascend a culvert. It was hypothesized that vertical obstacles or high velocity of opposing flow may prevent juvenile fish from moving upstream. It was also hypothesized that they would determine and take the path of least resistance to optimize their chances of successfully ascending a culvert. Four culverts were selected for intensive study regarding juvenile fish passage: Beaver and Soldotna Creeks on Kenai Peninsula and No-name and Pass Creek Tributary on Prince of Wales Island. It was postulated that fish are motivated to move upstream to obtain food if they can establish its presence. We used salmon eggs as an attractive food source both to initially capture the juveniles and then to motivate them to ascend the culvert for possible recapture. Juvenile fish were captured in a baited minnow trap and stained with a dye. They were released downstream of the culvert while the food source was placed upstream in a minnow trap. We supplemented our visual observations with underwater video cameras. We made numerous hydrologic and hydraulic measurements at each site. Although we attempted to select culverts that would ... Report Prince of Wales Island Alaska University of Alaska: ScholarWorks@UA Prince of Wales Island ENVELOPE(-99.001,-99.001,72.668,72.668) |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Culverts Fish Salmon Field Study Impact Environmental Design Mobility |
spellingShingle |
Culverts Fish Salmon Field Study Impact Environmental Design Mobility Kane, Douglas L. Belke, Charles E. Gieck, Robert E. Mclean, Robert F. Juvenile Fish Passage Through Culverts in Alaska: A Field Study |
topic_facet |
Culverts Fish Salmon Field Study Impact Environmental Design Mobility |
description |
In the past, culvert design where fish passage was considered generally has been based on the weakest-swimming adult fish in a river system. It has also been recognized for some time that juvenile fish are very active throughout the year, moving upstream and downstream in response to a number of environmental factors. In Alaska, many natal and nonnatal streams in southcentral and southeastern Alaska support both Chinook (Oncorhynchus tschawytscha (Walbaum)) and Coho (Oncorhynchus kisutch (Walbaum)) for one to three years, respectively, before they emigrate to sea. Are we restricting desirable habitat for these juvenile salmonids with hydraulic structures such as culverts? Unfortunately we have little information on either the behavior of juveniles in the vicinity of hydraulic structures or their swimming abilities. The objective of this study was to examine the behavior of juveniles when attempting to ascend a culvert. It was hypothesized that vertical obstacles or high velocity of opposing flow may prevent juvenile fish from moving upstream. It was also hypothesized that they would determine and take the path of least resistance to optimize their chances of successfully ascending a culvert. Four culverts were selected for intensive study regarding juvenile fish passage: Beaver and Soldotna Creeks on Kenai Peninsula and No-name and Pass Creek Tributary on Prince of Wales Island. It was postulated that fish are motivated to move upstream to obtain food if they can establish its presence. We used salmon eggs as an attractive food source both to initially capture the juveniles and then to motivate them to ascend the culvert for possible recapture. Juvenile fish were captured in a baited minnow trap and stained with a dye. They were released downstream of the culvert while the food source was placed upstream in a minnow trap. We supplemented our visual observations with underwater video cameras. We made numerous hydrologic and hydraulic measurements at each site. Although we attempted to select culverts that would ... |
format |
Report |
author |
Kane, Douglas L. Belke, Charles E. Gieck, Robert E. Mclean, Robert F. |
author_facet |
Kane, Douglas L. Belke, Charles E. Gieck, Robert E. Mclean, Robert F. |
author_sort |
Kane, Douglas L. |
title |
Juvenile Fish Passage Through Culverts in Alaska: A Field Study |
title_short |
Juvenile Fish Passage Through Culverts in Alaska: A Field Study |
title_full |
Juvenile Fish Passage Through Culverts in Alaska: A Field Study |
title_fullStr |
Juvenile Fish Passage Through Culverts in Alaska: A Field Study |
title_full_unstemmed |
Juvenile Fish Passage Through Culverts in Alaska: A Field Study |
title_sort |
juvenile fish passage through culverts in alaska: a field study |
publishDate |
2000 |
url |
http://hdl.handle.net/11122/10368 |
long_lat |
ENVELOPE(-99.001,-99.001,72.668,72.668) |
geographic |
Prince of Wales Island |
geographic_facet |
Prince of Wales Island |
genre |
Prince of Wales Island Alaska |
genre_facet |
Prince of Wales Island Alaska |
op_relation |
http://hdl.handle.net/11122/10368 |
_version_ |
1766174420375699456 |