Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 61
Book Description
Assessment of Angler Impacts to Kenai River Riparian Habitats During 1997
Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 61
Book Description
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 61
Book Description
Assessment of Shore Angling Impacts to Kenai River Riparian Habitats, 2000
Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 51
Book Description
Impacts of shore anglers to Kenai River riparian habitats were assessed in 3 river reaches during the 2000 fishing season. A total of 10,114 shore anglers were counted, 48.2% on private land and 51.8% on public land. Over 90% of anglers fished from mainland banks rather than islands or gravel bars. Of those using mainland banks, 19.3% used boardwalks or other structures, 51.5% stood in the water, and 29.2% stood on the bank. At bank measurement survey sites (n = 172), there were no significant effects on annual bank change (June 1999 to June 2000) for boat activity, stream meander, or habitat type. Cumulative change (June 1998 to June 2000) was significant for boat activity, with a mean loss of 0.26 m. At angler-effort survey sites (n = 42), annual bank change was significantly affected by site position relative to stream meander and 1999 angler effort but not habitat type or boat activity. Increased bank loss occurred at sites located on the outside of a meander and those having high levels of angler effort. Cumulative bank change showed no significant effects of habitat type, boat activity, or stream meander, but a significant effect of cumulative angler effort (1997 and 1998); bank loss increased with increased angler effort. At vegetation analysis sites (n = 12), inseason angler effort had a significant effect on mean percent change in cover of vegetation, litter, and bare ground, but not water; vegetation cover decreased and litter and bare ground increased with increased effort. Angler effort in 1999 had no significant effect on annual vegetation cover change (1999-2000). The same was true for cumulative effort (1997-1999) and cumulative change (1997-2000), indicating that vegetation cover may recover between seasons. Measurement error tests were conducted for both bank position measurements (±0.5 m) and vegetation cover (
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 51
Book Description
Impacts of shore anglers to Kenai River riparian habitats were assessed in 3 river reaches during the 2000 fishing season. A total of 10,114 shore anglers were counted, 48.2% on private land and 51.8% on public land. Over 90% of anglers fished from mainland banks rather than islands or gravel bars. Of those using mainland banks, 19.3% used boardwalks or other structures, 51.5% stood in the water, and 29.2% stood on the bank. At bank measurement survey sites (n = 172), there were no significant effects on annual bank change (June 1999 to June 2000) for boat activity, stream meander, or habitat type. Cumulative change (June 1998 to June 2000) was significant for boat activity, with a mean loss of 0.26 m. At angler-effort survey sites (n = 42), annual bank change was significantly affected by site position relative to stream meander and 1999 angler effort but not habitat type or boat activity. Increased bank loss occurred at sites located on the outside of a meander and those having high levels of angler effort. Cumulative bank change showed no significant effects of habitat type, boat activity, or stream meander, but a significant effect of cumulative angler effort (1997 and 1998); bank loss increased with increased angler effort. At vegetation analysis sites (n = 12), inseason angler effort had a significant effect on mean percent change in cover of vegetation, litter, and bare ground, but not water; vegetation cover decreased and litter and bare ground increased with increased effort. Angler effort in 1999 had no significant effect on annual vegetation cover change (1999-2000). The same was true for cumulative effort (1997-1999) and cumulative change (1997-2000), indicating that vegetation cover may recover between seasons. Measurement error tests were conducted for both bank position measurements (±0.5 m) and vegetation cover (
Assessment of Shore Angling Impacts to Kenai River Riparian Habitats, 2001
Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 43
Book Description
Effects of shore anglers on bank erosion and vegetation in Kenai River riparian habitats were assessed during the 2001 fishing season. The mean number of anglers counted in each of 40 survey sites varied from 0 to 7.3, and angler effort at these sites ranged from 0 to 2,784 angler-hours. Changes in bank position were measured annually from 1998 to 2001 and analyses for cumulative effects of angler effort (1998-2000), power boat activity level, stream meander, and habitat type on bank loss (1998-2001) showed a significant effect for angler effort (P 0.001); increased bank loss was associated with increased angler effort. Inseason angler effort had a significant effect on mean change in percent cover of vegetation (negative relationship) and water (positive relationship). There was no significant effect of cumulative angler effort (1998-2000) on changes in percent cover (1999-2001) in litter, but there were marginally significant effects on changes in percent cover of vegetation (negative relationship) and bare ground (positive relationship) and a significant effect of angler effort on the percent cover of water (positive relationship). Species composition analyses using Shannon diversity and evenness indices showed that there were significant effects of cumulative angler effort (1998-2000) on plant species diversity and evenness (1997-2001); both significantly decreased with increased angler effort. The cover of grasses, dandelions, and horsetails (Calamagrostis spp., Taraxacum spp., and Equisetum spp., respectively), was assessed for 1997 to 2001. Sites with high levels of angler effort (800 angler-hours) had a mean loss in percent cover of grasses (2.3%) and a mean increase in percent cover of dandelions (3.6%) and horsetails (8.6%). At sites with low levels of angler effort (
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 43
Book Description
Effects of shore anglers on bank erosion and vegetation in Kenai River riparian habitats were assessed during the 2001 fishing season. The mean number of anglers counted in each of 40 survey sites varied from 0 to 7.3, and angler effort at these sites ranged from 0 to 2,784 angler-hours. Changes in bank position were measured annually from 1998 to 2001 and analyses for cumulative effects of angler effort (1998-2000), power boat activity level, stream meander, and habitat type on bank loss (1998-2001) showed a significant effect for angler effort (P 0.001); increased bank loss was associated with increased angler effort. Inseason angler effort had a significant effect on mean change in percent cover of vegetation (negative relationship) and water (positive relationship). There was no significant effect of cumulative angler effort (1998-2000) on changes in percent cover (1999-2001) in litter, but there were marginally significant effects on changes in percent cover of vegetation (negative relationship) and bare ground (positive relationship) and a significant effect of angler effort on the percent cover of water (positive relationship). Species composition analyses using Shannon diversity and evenness indices showed that there were significant effects of cumulative angler effort (1998-2000) on plant species diversity and evenness (1997-2001); both significantly decreased with increased angler effort. The cover of grasses, dandelions, and horsetails (Calamagrostis spp., Taraxacum spp., and Equisetum spp., respectively), was assessed for 1997 to 2001. Sites with high levels of angler effort (800 angler-hours) had a mean loss in percent cover of grasses (2.3%) and a mean increase in percent cover of dandelions (3.6%) and horsetails (8.6%). At sites with low levels of angler effort (
Assessment of Angler Impacts to Kenai River Riparian Habitats During 1996
Author: Larry L. Larson
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 33
Book Description
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 33
Book Description
Assessment of Shore Angling Impacts to Kenai River Riparian Habitats, 1998
Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 67
Book Description
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 67
Book Description
Assessment of Shore Angling Impacts to Kenai River Riparian Habitats, 1999
Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 68
Book Description
Final Report
Author: Gary S. Liepitz
Publisher:
ISBN:
Category : Anadromous fishes
Languages : en
Pages : 188
Book Description
Publisher:
ISBN:
Category : Anadromous fishes
Languages : en
Pages : 188
Book Description
Fishery Data Series
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 802
Book Description
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 802
Book Description
The Continued Assessment and Management of Cumulative Impacts on Kenai River Fish Habitat
Author: Glenn A. Seaman
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 210
Book Description
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 210
Book Description
Kenai River Riparian Habitat Studies
Author: Mary A. King
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 24
Book Description