570 items found
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Description:Photos for Fish Research Hatchery exhibit page at: https://cpw.cvlcollections.org/exhibits/show/cpw-aquatics-research/fish-research-hatchery
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Description:
As human development expands and climate changes alter the landscape, maintaining high quality fish habitat remains vital.
Stream and Fisheries Habitat researchers restore degraded stream habitat on rivers across the state and evaluate the impact of habitat change on Colorado sport fish.Stream Habitat Investigations Overview
Stream Habitat Investigations Research Projects:
- Fish Passage and Barrier Studies
- Monitoring Fisheries Response to Aquatic Habitat Restoration
- Post-Flood Recovery Assessment & Stream Restoration Guidelines for the Colorado Front Range
- South Platte River Restoration and Habitat Enhancement
- Upper Arkansas River Habitat Enhancement Evaluation
- Whitewater Park Studies
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Subjects:
Description:Short reports on CPW fisheries research produced from 1953-1961. Click on the title of each leaflet for the pdf. Print copies located in the CPW Research Library: SH 222 .C6 C64
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| SPECIAL PURPOSE REPORT # | TITLE | AUTHOR | YEAR |
| 1 | A summary of return to the creel information on hatchery-reared, catchable-sized trout obtained from intensive creel census studies conducted in Colorado | Klein, William D. | 1953 |
| 2 | Priorities for 1953 two inch stocking schedules | Klein, William D. | 1953 |
| 3 | An approach to the fishery management of the bureau of reclamation reservoirs located in middle park | Klein, William D. | 1953 |
| 4 | An investigation of Lake John in North Park | Klein, William D. | 1953 |
| 5 | A spot check of the fish population of streams in the Crested Butte area | Klein, William D. | 1953 |
| 6 | A presentation of trout fishery use in Colorado by various categories of fishermen combined with fishing license sales and revenue information | Klein, William D. | 1953 |
| 7 | A study of the natural diet of rainbow trout -- its application to management | Williams, Harvey J. | 1953 |
| 8 | An explanation of basic fish research needs and problems with particular emphasis on the Skaguay reservoir studies | Klein, William D. | 1954 |
| 9 | Trout foods | Klein, William D. | 1954 |
| 10 | Approaches to fish management in Mesa Lake, Boulder County | Klein, William D. | 1954 |
| 11 | The results of a three-year creel census on two high mountain lakes and related data of value to fish management | Weberg, Clarence A. | 1954 |
| 12 | Summary of activities of the trout research section during the 1954 field work period | Klein, William D. | 1954 |
| 13 | Recommendations on native egg requirements and planting policies relating to the use of natives and two inch rainbow fingerlings | Klein, William D. | 1954 |
| 14 | Revised two inch trout stocking key for trout lakes | Klein, William D. | 1954 |
| 15 | An alternate means of raising revenue by selling a trout stamp | Klein, William D. | 1954 |
| 16 | The warm water fish hatchery and salvage operations for 1954 | Lynch, Thomas M. | 1955 |
| 17 | Two inch trout stocking request for 1955 and other stocking suggestions | Klein, William D. | 1955 |
| 18 | Observations concerning kokanee in Montana | Moore, Richard L. | 1955 |
| 19 | Huerfano river stream improvement project | Moore, Richard L. | 1955 |
| 20 | The fishery potentials of irrigation impoundments in the lower Arkansas River drainage area of Colorado | Lynch, Thomas M. | 1955 |
| 21 | Research and management techniques used on reservoir number four | Evans, Robert L. | 1955 |
| 22 | Trout water warden fishing reports and related data | Klein, William D. | 1955 |
| 23 | Crayfish introductions | 1955 | |
| 24 | Voluntary creel census returns form three lakes of the Grand Mesa area | Barrows, Pete T. | 1955 |
| 25 | Eradication of the fish population of four lakes of the Grand Mesa area through the use of emulsified rotenone (5%) and toxaphene | Barrows, Pete T. | 1955 |
| 26 | Utilization of additional two inch trout and a revised marking schedule | Klein, William D. | 1955 |
| 27 | Voluntary creel census boxes at wright's reservoir | Moore, Richard L. | 1955 |
| 28 | A progress report on the success of the white bass (Lepibema chrysops) in Colorado reservoirs | Lynch, Thomas M. | 1955 |
| 29 | Data and recommendations concerning the frequency of plants of catchable trout | Klein, William D. | 1955 |
| 30 | The final tabulation on the walleye operations for 1955 | Lynch, Thomas M. | 1955 |
| 31 | A progress and evaluation report on the success of the walleye (Stizostedium vitreum) in Colorado waters | 1955 | |
| 32 | Information on the Trappers Lake spawning grounds and related management | Klein, William D. | 1955 |
| 33 | Seining efficiency and fish productivity at Richards Lake | Lynch, Thomas M. | 1955 |
| 34 | Inter-State meeting of fishery personnel | Evans, Robert L. | 1955 |
| 35 | Notes on the collection of fish stomach samples | Nelson, Wesley C. | 1955 |
| 36 | Whitefish possibilities in eastern slope streams | Klein, William D. | 1955 |
| 37 | Analysis and management applications of the 1955 aerial fisherman count | Klein, William D. | 1956 |
| 38 | The production record of state leased warm water lakes | Lynch, Thomas M. | 1956 |
| 40 | Report on the results of poisoning South Lone Pine Creek, Larimer County, Colorado, October 1955 | Nelson, Wesley C. | 1955 |
| 41 | Two bacterial diseases of rainbow trout encountered at Rifle Falls | Cook, Eugene P. | 1956 |
| 42 | 1956 fishermen counts -- southeast region | Klein, William D. | 1956 |
| 43 | 1956 fishermen counts -- southwest region | Klein, William D. | 1956 |
| 44 | 1956 fishermen counts -- northeast region | Klein, William D. | 1957 |
| 45 | 1956 fishermen counts -- northwest region | Klein, William D. | 1957 |
| 46 | Progress report - Las Animas Hatchery | Lynch, Thomas M. | 1957 |
| 47 | A partial census of the whitefish and trout population in the Yampa and White rivers and their tributaries | Klein, William D. | 1957 |
| 48 | Growth data on fourteen fish species collected from the warm water regions of Colorado | Lynch, Thomas M. | 1957 |
| 49 | Supplemental information relative to fish losses allegedly caused by loss of fuel oil into the Eagle River at the Empire Zinc Mill at Gilman, Colorado | Klein, William D. | 1957 |
| 50 | Notes on fish toxicants | Barrows, Pete T. | 1957 |
| 52 | Winter kill lakes | Barrows, Pete T. | 1957 |
| 53 | Additional information on the 1956 Lake Granby kokanee egg take | Klein, William D. | 1957 |
| 54 | The use of a winter kill pond in the Redfeather Lakes area for the stocking of creel size trout | Klein, William D. | 1957 |
| 55 | Results of fingerling rainbow trout plants in the Williams Fork, Eagle and Colorado rivers | Klein, William D. | 1958 |
| 56 | The development of winter kill situations in ice covered lakes and a review of possible control methods in relation to Echo Lake | Nolting, Donald H. | 1958 |
| 57 | Observations on kokanee salmon in 1957 and management implications | Klein, William D. | 1958 |
| 58 | The recovery of marked kokanee salmon during spawn-taking operations in the fall of 1957 and related information | Klein, William D. | 1958 |
| 59 | Analysis and application of the 1956 fishermen count information | Klein, William D. | 1958 |
| 60 | Continued investigations of the winter kill problem in Echo Lake and results of experimental control procedures in Echo Lake and similar lakes | Nolting, Donald H. | 1958 |
| 61 | An evaluation of the walleye, sizostedion vitreum vitreum (Mitchell), in the Colorado fishery program | Taliaferro, Rex I. | 1959 |
| 62 | The results of attempts to hatch kokanee salmon eggs without circulation of water and under pressure | Barnhart, Roger A. | 1960 |
| 63 | Special service functions performed by the fish control and salvage unit | Strieter, Ernest | 1960 |
| 64 | The use of a post card questionnaire and voluntary tag returns to obtain information on the fishermen and catch at Granby Reservoir | Klein, William D. | 1960 |
| 65 | Investigations of winter kill in Echo Lake in relation to control procedures with underwater compressed air | Nolting, Donald H. | 1960 |
| 66 | Removal of brook trout with derris root from a section of the south fork of the Frying Pan River | Klein, William D. | 1961 |
| 67 | Investigations of winter kill in Echo Lake in relation to control procedures with underwater compressed air - 1960-61 | Nolting, Donald H. | 1960-1961 |
| 68 | Planting fish in high lakes by helicopter | Nolting, Donald H. | 1961 |
| 69 | An experiment to compare mortality of trout caught on single and treble hooks | Klein, William D. | 1961 |
Description:One to three page leaflets on general fishery information produced from 1955-1961. The intent of the leaflets was to be used for training, to give field personnel a broader knowledge of Department fisheries activities, and to be applied directly in conducting some of the regular activities in the field. Click on the title of each leaflet for the pdf.Print copies located in the CPW Research Library: SH 11 .C6 O8 #1-81
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Type: Text
Subjects: Fishing
State parks
State parks
Type:Text
Subject:Fishing
State parks
State parks
Description:Fishing is available at 37 state parks across Colorado. Below are some highlights of fishing at state parks. For more information, visit www.cpw.state.co.us, Select A Park, then select Park Activities.
Type:Brochure
Subject:Fishing
Description:Quick tips, resources and gear
Description:
Led By
Study Area
Fountain Creek
Project Status
Ongoing
Research Objectives
- Estimate seasonal survival rates of Flathead Chub, Platygobio gracilis through the lower section of Fountain Creek, Colorado.
- Quantify seasonal Flathead Chub movement through the study area.
- Examine mechanistic effects on these metrics, especially related to flow.
- Provide gear and field protocol recommendations for future studies by quantifying detection probability of PIT tags using three gear types.
Collaborators
Dr. Kevin Bestgen, Larval Fish Laboratory, Colorado State University, and Dr. Larissa Bailey, Colorado State University
Project Description
Effective conservation requires understanding the life history traits of the species of interest and mechanisms affecting those traits. Unfortunately, there is a lack of life history information—particularly quantified life history metrics—for many species. Quantifying life history metrics allows rigorous testing of mechanisms affecting species’ persistence, which can focus management efforts on the most effective actions for conservation. For this study, Flathead Chub in Fountain Creek were selected as the study organism and site for three reasons. First, compared to other plains stream fishes, Flathead Chub are relatively well studied, including a mark-recapture study in this study area. Second, for conservation purposes, it is important to determine the maximum amount of movement that fish within an assemblage will undertake. Therefore, it makes sense to select an active swimming species within a relatively long, unimpeded section of river. Flathead Chub in Fountain Creek fit this criterion. Third, Flathead Chub are relatively large-bodied compared to many other Great Plains fishes. This makes deploying PIT tags easier and reduces the effect of PIT tags on swimming performance (Figure 1).
Quantifying survival and movement allows testing of what is affecting those metrics. For apparent survival (ϕ), covariates being studied that may affect survival include multiple flow covariates, season, fish total length, and habitats associated with sites. Transition probability (ψ) covariates include high flow events, distance between sites, direction of movements, seasons, and fish total length. PIT tag detection occurred with three gear types: a 12-m mobile array; a 2-m mobile array; and scanning fish, collected via electrofishing, with an Oregon RFID handheld PIT tag reader (Figure 2). Using three gear types allows detection of fish in different habitat types. Ultimately, this study will help focus CPW staff to management actions that increase this fish’s survival rates and population persistence in Colorado.
[show more]Type: Text
Subjects: Waterfowl
Wildlife management
South Platte River Basin
Wildlife management
South Platte River Basin
Type:Text
Subject:Waterfowl
Wildlife management
South Platte River Basin
Wildlife management
South Platte River Basin
Description:Attracting and holding large populations of waterfowl are goals of habitat management for nonbreeding waterfowl. Currently, many habitat planners use bioenergetics approaches to guide habitat planning for nonbreeding waterfowl and shorebirds. In their simplest form, these bioenergetics models predict the amount of habitat needed to support a population goal based on the energy requirements of that goal and the productivity of the habitat. Many of these models assume that energy availability is the only factor affecting duck use of sites. However, recent evidence suggests that although energy availability is important for predicting wetland use by ducks, there are many other factors that influence duck use of sites and utility of those used sites. Therefore, more complex models have been developed but it is unclear how complex these models need to be and what specific factors should be incorporated into to accurately predict carrying capacity or habitat needs. Regardless of what form these models take, given the demonstrated importance of energy availability, estimates of food availability are necessary for the different wetland types in which nonbreeding ducks and shorebirds forage. Most dabbling and many diving ducks primarily consume benthic seeds during winter and migrations but transition to diets higher in invertebrates prior to nesting in spring. Shorebird diet consists of almost exclusively invertebrates.
The lower South Platte River [show more]
Type: Text
Subjects: Rainbow trout
Formalin
Formalin
Type:Text
Subject:Rainbow trout
Formalin
Formalin
Description:Formalin is a commonly used prophalyctic antifungal and antiparasitic treatment of fish and fish eggs, yet little is known about the differential sensitivity among strains after exposure as eggs. This study seeks to determine the sensitivities (measured by mortality) of four rainbow trout strains, after first exposure to formalin as eggs, and a later exposure as fingerlings. The data is analyzed using logistic regression and a Cox proportional hazard model. Both models yield consistent conclusions; the different strains do die at different rates as fingerlings, but the egg treatment does not contribute to these differences. [show more]