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File application/x-maker June 2013 NFH Board Meeting Book
This document contains materials associated with the National Fish Habitat Board's June 25 - 26, 2013 in-person meeting.
Located in About EBTJV / National Fish Habitat Board Meetings / 2013 NFH Board Meetings
File Linking movement and reproductive history of brook trout to assess habitat connectivity in a heterogeneous stream network
1. Defining functional connectivity between habitats in spatially heterogeneous landscapes is a particular challenge for small-bodied aquatic species. Traditional approaches (e.g. mark–recapture studies) preclude an assessment of animal movement over the life cycle (birth to reproduction), and movement of individuals may not represent the degree of gene movement for fecund species. 2. We investigated the degree of habitat connectivity (defined as the exchange of individuals and genes between mainstem and tributary habitats) in a stream brook trout (Salvelinus fontinalis) population using mark–recapture [passive integrated transponder (PIT) tags], stationary PIT-tag antennae and genetic pedigree data collected over 4 years (3425 marked individuals). We hypothesised that: (i) a combination of these data would reveal higher estimates of animal movement over the life cycle (within a generation), relative to more temporally confined approaches, and (ii) movement estimates of individuals within a generation would differ from between-generation movement of genes because of spatial variation in reproductive success associated with high fecundity of this species. 3. Over half of PIT-tagged fish (juveniles and adults) were recaptured within 20 m during periodic sampling, indicating restricted movement. However, continuous monitoring with stationary PIT-tag antennae revealed distinct peaks in trout movements in June and October–November, and sibship data inferred post-emergence movements of young-of-year trout that were too small to be tagged physically. A combination of these methods showed that a moderate portion of individuals (28–33%) moved between mainstem and tributary habitats over their life cycle. 4. Patterns of reproductive success varied spatially and temporally. The importance of tributaries as spawning habitat was discovered by accounting for reproductive history. When individuals born in the mainstem reproduced successfully, over 50% of their surviving offspring were inferred to have been born in tributaries. This high rate of gene movement to tributaries was cryptic, and it would have been missed by estimates based only on movement of individuals. 5. This study highlighted the importance of characterising animal movement over the life cycle for inferring habitat connectivity accurately. Such movements of individuals can contribute to substantial gene movements in a fecund species characterised by high variation in reproductive success.
Located in Science and Data / Brook Trout Related Publications
File Troff document Lynn Camp Prong Brook Trout Restoration, TN_FY11 Project
This project was focused on removing rainbow trout from Lynn Camp Prong and re-stocking this stream with wild southern Appalachian strain Brook Trout,
Located in Projects / Project Completion Reports
Project North Peninsula State Park Saltmarsh Restoration
This project will create a healthy, productive saltmarsh habitat (9 acres, including complete restoration of 2 acres of historical marsh habitat filled with spoil as a result of dredge activities and enhancement of 7 acres of saltmarsh) in North Peninsula State Park, Volusia County, Florida.
Located in Funded Projects / SARP Projects W2B
File application/x-maker October 2013 NFH Board Meeting Book
This document contains materials associated with the National Fish Habitat Board's October 22 - 23, 2013 in-person meeting.
Located in About EBTJV / National Fish Habitat Board Meetings / 2013 NFH Board Meetings
File Patch Metrics: A Cost Effective Method for Monitoring Brook Trout Populations - Hudy et al. 2013
This paper describes a cost effective method for monitoring short and long term trends of Chesapeake Bay's Brook Trout populations.
Located in Science and Data / Brook Trout Related Publications / Chesapeake Bay Brook Trout Management Strategy-References
File chemical/x-pdb Quantifying the effect of semi-natural riparian cover on stream temperatures: implications for salmonid habitat management
Previous studies examining the effects of riparian cover on stream temperatures have led to highly variable findings. In an attempt to reduce these uncertainties, this study examines the relationship between stream temperature variability and local climatic conditions over discrete 300-m sections of a watercourse. Seventeen stream sections were chosen within the Slaney catchment on the basis of riparian cover and size. Continuous monitoring over a 2-year period from May 2010 found that riparian cover had a measurable cooling effect on water temperatures at small spatial scales. The magnitude of this effect was dependent on stream size and local climactic conditions.
Located in Science and Data / Brook Trout Related Publications
Restoration of Natural Hydrology and Habitat Complexity in the Machias, Rivers, Maine
This project will remove 11 remnant log drive dams and add large woody material to restore fish passage, stream connectivity and natural stream processes that will passively restore cold water habitat in the tributaries of the Machias River. A total of 27.2 miles of stream upstream of the dam sites will be affected by the project.
Located in Projects / 2006 - 2018 Projects / 2013 Projects
Restoration of Natural Hydrology and Habitat Complexity in the Machias, Rivers, Maine
This project will remove 11 remnant log drive dams and add large woody debris to restore fish passage, stream connectivity and natural stream processes that will passively restore cold water habitat in the tributaries of the Machias River. A total of 27.2 miles of stream upstream of the dam sites will be affected by the project.
Located in Funded Projects / EBTJV Projects
Restoring Connectivity in the Sunday River and Martin Stream Watersheds, Maine
Subwatersheds of the Androscoggin River contain some of the finest intact and healthy brook trout habitat in the state of Maine. This project will remove two fish passage barriers providing a total of six miles of connectivity in the Sunday River and Martin Stream subwatersheds.
Located in Projects / 2006 - 2018 Projects / 2013 Projects
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