Perry, Stephen

Metabolic rates of embryos and alevin from a cold-adapted salmonid differ with temperature, population and family of origin: implications for coping with climate change: Early developmental stages of cold-adapted ectotherms such as brook trout (Salvelinus fontinalis) are at higher risk of mortality with increasing water temperatures. To determine the amount of variation present in early life, which may allow for potential adaptation to increasing temperature, we examined the routine metabolic rates (RMR) of wild-origin brook trout embryos and alevins reared at normal (5°C) and elevated (9°C) temperatures. The experiment was structured to examine variation in RMR within and among several levels of biological organization (family, population and ancestral type (native vs. mixed ancestry)). As expected, family and temperature variables were most important for predicting RMR and body mass, although population-level differences also existed when family was excluded for more detailed analysis. Additionally, body mass strongly influenced RMR at all life stages except for eyed embryos. When family identity was removed from the analysis, population became the most significant variable. Variation in RMR and mass within and among populations may indicate existing adaptive potential within and among brook trout populations to respond to predicted warming under climate change scenarios.
Located in Science and Data / Brook Trout Related Publications
Midwest FHP Fish Habitat Modeling Results: Ohio River Basin and SARP: This report describes the results of modeling performed by Downstream Strategies.
Located in Science and Data / Brook Trout Related Publications / Chesapeake Bay Brook Trout Management Strategy-References
Mill Creek “Chop and Drop”, WV_FY14 Project: Mostly dead and/or down hemlock trees were utilized to create large woody material inspired habitat structures to increase pool habit, increase thalweg meander length, decrease bankfull width, and introduce overhead fish cover. Cross-vanes, j-hooks, wing-deflectors, toe wood, digger logs, and engineered log jams were constructed. The strategic part of this chop and drop effort was to place and anchor logs to minimize movement in bankfull or high events.
Located in Projects / Project Completion Reports
Modified Culvert Inventory and Assessment Protocol: This culvert inventory and assessment method is a modified version of the National Inventory and Assessment Procedure developed to collect data needed to run coarse filter evaluations of fish passage.
Located in Science and Data / Aquatic Organism Passage I&A and state design guidelines
Modified Culvert Inventory and Assessment Protocol: This culvert inventory and assessment method is a modified version of the National Inventory and Assessment Procedure (NIAP; Clarkin et al 2003) developed to collect data needed to run coarse filter evaluations of fish passage (Coffman 2005).
Located in Science and Data / Brook Trout Related Publications
MOU September 2018: MOU Updated September 2018
Located in Groups / Steering Committee / MOU Versions
Movement Patterns of Brook Trout in a Restored Coastal Stream System in Southern Massachusetts: Populations of anadromous brook trout can be found from northern Canada into New England. It is believed that the extent of anadromy exhibited by coastal brook trout populations decreases with latitude, but the ecology and movements of the more southern populations are less studied. A 33-month acoustic telemetry study of anadromous brook trout (Salvelinus fontinalis) was conducted in a restored coastal stream and adjacent marine system in southeastern Massachusetts. Movement and migration patterns of 54 brook trout were investigated for individual differences and common features. Individuals exhibited a range of movement patterns. Some were more resident and only moved short distances, while others moved great distances covering the entire stretch of the stream (7.25 km) and moving into the marine environment. General Additive Mixed Models revealed that date was the major influence on brook trout movement between habitats and predicted peaks in movement in the spring and fall. Downstream movement peaked in the spring and in the fall, suggesting post-spawning feeding migration. Fish transitioned between habitats more often at new and full moons and when stream temperature was between 8 and 12 °C. Upstream transitions peaked as temperatures declined in winter 2011. Fifty percent of tagged brook trout were detected in the estuary during the study, suggesting that it is an important habitat for the population. In summer 2012, 14 tagged brook trout (20% of active tags) resided near one receiver at the head of the tide, which contained a thermal refugium in the form of a cold-water spring seep. Of the 84 tagged brook trout, 9.5% moved to the marine environment. Warm temperatures in saline Buttermilk Bay in the summer and cold temperatures in winter probably discourage some individuals from entering the marine environment. Compared to more northern coastal populations of brook trout, the Red Brook population appears to be less anadromous.
Located in Science and Data / Brook Trout Related Publications
Nash Stream Restoration & Columbia Road Culverts, Odell, Coos County, NH: Project application.
Located in Projects / … / 2015 Projects / Nash Stream Restoration & Columbia Road Culverts, Odell, Coos County, NH
Nash Stream Restoration Article: This article describes the on-going fish habitat restoration work occurring in Nash Stream (NH), which appeared in the Spring 2011 issue of Northern Woodlands.
Located in Projects / … / 2012 Projects / Nash Stream Restoration Project, Coos County, New Hampshire
National Fish Habitat Partnership Infographic - 2019: Information about NFHP accomplishments.
Located in News & Events / News Inbox

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