Effects of Floods on Brook Trout Populations in the Monongahela National Forest, West Virginia

Carline, Robert F.; McCullough, Brian J.

doi:10.1577/t02-112

Cited by 41 publications

(47 citation statements)

References 15 publications

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“…3b). The pre-flood successional trajectory along axis 1 was reset with post-flood points Marked reductions in salmonid populations due to floods have been reported elsewhere 20,21 and most studies report recovery within five years following a pulse disturbance 17 .…”

Section: Comment [L2]mentioning

confidence: 82%

Major flood disturbance alters river ecosystem evolution

et al. 2012

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Section: Comment [L2]mentioning

confidence: 82%

Major flood disturbance alters river ecosystem evolution

et al. 2012

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“…Such high mortality rates have been suggested elsewhere by studies examining changes in fish abundance before and after floods. Following floods, for example, Jowett and Richardson (1989) reported adult brown trout abundance decreased by 26-57% in six of the seven rivers they studied (flood return period, 20-500 years), and Carline and McCullough (2003) reported an 84% reduction in abundance of age-1 and older brook trout Salvelinus fontinalis. Seegrist and Gard (1972) reported similar results for rainbow trout and brook trout, and for one flood there was an 82% decline, albeit they found little effect of an earlier flood in the same system.…”

Section: Flood-induced Mortalitymentioning

confidence: 98%

Movement and Mortality of Adult Brown Trout in the Motupiko River, New Zealand: Effects of Water Temperature, Flow, and Flooding

et al. 2010

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Abstract.-Management of the effects of water quality and flow on fisheries requires an understanding of the factors that control fish movements. We used radiotelemetry to monitor the movements of adult brown trout Salmo trutta in a New Zealand river over 11 months (September 2004 to August 2006 and linked those movements to the changes in flow and water temperature. Individual fish moved up to 41 km during the study. However, most fish moved less than 1 km. All of the trout that showed little movement throughout the summer were living in relatively deep pools that presumably provided cover. The rates of movement declined steadily over the spring-summer period, as flow decreased and water temperature increased. The percentage of fish moving was positively related to the average daily flow during the interval between tracking occasions and negatively related to the average daily water temperature, less than 20% of the tagged fish moving once temperatures were above 198C. A severe, 50-year flood occurred in March 2005 and was associated with the mortality of 60-70% of the remaining tagged fish, confirming that flood-induced mortality can affect a substantial proportion of an adult brown trout population.Research on river-resident salmonids over the last 15 years has indicated that widespread movement is much more common than previously thought (Gowan et al.

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“…In Appalachia, salmonids must cope with periodically poor feeding conditions (Cada et al 1987;Ensign et al 1990;Sweka 2003;Thome 2004) as well as occasional extreme environmental circumstances, such as drought and flooding (Carline and McCullough 2003;Hakala and Hartman 2004). The low productivity of Appalachian headwater watersheds, coupled with natural environmental variability, may affect the population dynamics and growth patterns of salmonids.…”

mentioning

confidence: 99%

Disproportionate Relative Importance of a Terrestrial Beetle Family (Coleoptera: Scarabaeidae) as a Prey Source for Central Appalachian Brook Trout

et al. 2007

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Brook trout Salvelinus fontinalis and other salmonids in Appalachia typically inhabit headwater watersheds, where food resources may limit growth. We monitored the feeding trends of a brook trout population in central Appalachia over the course of 2 years to determine variation in feeding intensity and important prey items. One terrestrial beetle family, Scarabaeidae, provided a disproportionate amount of energy during the only time of year when brook trout were feeding substantially above maintenance ration. Scarab beetles contributed 39.6% of all energy consumed during May and June of both years, though the number of fish with one or more scarabaeids present in the stomach varied by month (22.2–51.7%). The species composition of scarab beetles consumed suggested that four species are of particular importance. Our findings imply that scarabaeids represent a considerably important prey taxon for brook trout in the region. Considering the foraging habits of the scarabaeid species in question, the phenomenon we witnessed probably occurs throughout Appalachia.

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Effects of Floods on Brook Trout Populations in the Monongahela National Forest, West Virginia

Cited by 41 publications

References 15 publications

Major flood disturbance alters river ecosystem evolution

Major flood disturbance alters river ecosystem evolution

Movement and Mortality of Adult Brown Trout in the Motupiko River, New Zealand: Effects of Water Temperature, Flow, and Flooding

Disproportionate Relative Importance of a Terrestrial Beetle Family (Coleoptera: Scarabaeidae) as a Prey Source for Central Appalachian Brook Trout

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