Spatiotemporal patterns and habitat associations of smallmouth bass (<i>Micropterus dolomieu</i>) invading salmon‐rearing habitat

Lawrence, David; Olden, Julian D.; Torgersen, Christian E.

doi:10.1111/j.1365-2427.2012.02847.x

Cited by 32 publications

(61 citation statements)

References 54 publications

(101 reference statements)

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“…This temperature threshold corresponds with what has been found in other studies on Smallmouth Bass (Lawerence et al. ). Disentangling the effect of temperature and that of Smallmouth Bass is not possible with only field data.…”

Section: Discussionsupporting

confidence: 90%

Effects of Multiple Nonnative Fish on an Imperiled Cyprinid, Hornyhead Chub

2019

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Nonnative fish can have substantial negative effects on the abundance and distribution of native fishes through predation and competition. Nonnative predators are of particular interest because they represent novel threats to native prey species that are not adapted to their presence. Prey species with limited distributions or population sizes may be particularly vulnerable to the effects of nonnative predators. In the Laramie River, four nonnative predators—Brown Trout Salmo trutta, Rainbow Trout Oncorhynchus mykiss, Brook Trout Salvelinus fontinalis, and Smallmouth Bass Micropterus dolomieu are present along with a state‐imperiled population of Hornyhead Chub Nocomis biguttatus. The abundance of Hornyhead Chub has declined with increasing abundance of nonnative predators, with the probability of occurrence of Hornyhead Chub dropping drastically when Smallmouth Bass were present. All four nonnative species preyed on native cyprinids, but Smallmouth Bass relied most heavily on fish as a prey item. Isotopic niche overlap occurred between Hornyhead Chub and all of the nonnative predator species. Our results demonstrate that nonnative predators have the potential to negatively affect the abundance and distribution of Hornyhead Chub through the mechanisms of predation and competition, and predator identity is important in determining the extent of effects. Smallmouth Bass are a greater concern than nonnative salmonids because of their more piscivorous behavior, and their recent upstream expansion may be limiting the downstream distribution of Hornyhead Chub in the Laramie River.

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Section: Discussionsupporting

confidence: 90%

Effects of Multiple Nonnative Fish on an Imperiled Cyprinid, Hornyhead Chub

2019

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“…While multiple factors were probably involved in the decline of Pacific Lampreys (Luzier et al 2011), our study, in conjunction with past work on other native fishes in the Umpqua River (Simon and Markle 1999) and in similar systems (Lawrence et al 2012(Lawrence et al , 2014(Lawrence et al , 2015, provide increasing evidence indicating that Smallmouth Bass could negatively affect native fishes in the Umpqua River basin. Across the Pacific Northwest Smallmouth Bass are expected to invade farther into stream networks as temperatures warm (Lawrence et al 2012(Lawrence et al , 2014. Current conditions in the Umpqua River basin suggest that 400-450 km of stream and river habitat are thermally suitable for Smallmouth Bass (i.e., >20°C August mean temperature), and suitable habitat might expand by about 50% by 2040 (estimated from AWAE 2016).…”

Section: Discussionsupporting

confidence: 72%

Bioenergetics Models to Estimate Numbers of Larval Lampreys Consumed by Smallmouth Bass in Elk Creek, Oregon

Schultz

Heck

Kowalski

et al. 2017

N American J Fish Manag

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Nonnative fishes have been increasingly implicated in the decline of native fishes in the Pacific Northwest. Smallmouth Bass Micropterus dolomieu were introduced into the Umpqua River in southwest Oregon in the early 1960s. The spread of Smallmouth Bass throughout the basin coincided with a decline in counts of upstream‐migrating Pacific Lampreys Entosphenus tridentatus. This suggested the potential for ecological interactions between Smallmouth Bass and Pacific Lampreys, as well as freshwater‐resident Western Brook Lampreys Lampetra richardsoni. To evaluate the potential effects of Smallmouth Bass on lampreys, we sampled diets of Smallmouth Bass and used bioenergetics models to estimate consumption of larval lampreys in a segment of Elk Creek, a tributary to the lower Umpqua River. We captured 303 unique Smallmouth Bass (mean: 197 mm and 136 g) via angling in July and September. We combined information on Smallmouth Bass diet and energy density with other variables (temperature, body size, growth, prey energy density) in a bioenergetics model to estimate consumption of larval lampreys. Larval lampreys were found in 6.2% of diet samples, and model estimates indicated that the Smallmouth Bass we captured consumed 925 larval lampreys in this 2‐month study period. When extrapolated to a population estimate of Smallmouth Bass in this segment, we estimated 1,911 larval lampreys were consumed between July and September. Although the precision of these estimates was low, this magnitude of consumption suggests that Smallmouth Bass may negatively affect larval lamprey populations. Received September 20, 2016; accepted March 31, 2017Published online June 6, 2017

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“…As summer temperatures increase, subyearling chinook salmon vacate warm areas, moving upstream or into cooler tributaries, or are lost to predation. Some bass also move upstream (as documented by Lawrence et al 2012) but not far enough to maintain the relatively high degree of overlap observed between bass and subyearling chinook salmon in the early summer. It is likely that the much warmer stream temperatures observed during the late summer isolate bass and subyearling chinook salmon due to physiological differences in thermally mediated growth and consumption.…”

Section: Discussionmentioning

confidence: 91%

“…Bass and subyearling chinook salmon distribution models were built based on fish and habitat surveys conducted in late June and early August of 2009 (MFJDR and NFJDR) and 2010 (NFJDR only; Lawrence et al 2012). Lawrence et al (2012) revealed that bass abundance in the study area had a positive, nonlinear relationship to water temperature at a broad scale, and if satisfactory temperatures were available, greater water depths were (linearly) associated with greater bass abundance. For this study, we built a Bayesian hierarchical model to quantify this hierarchical habitat selection at two spatial scales.…”

Section: Fish Distribution Modelsmentioning

confidence: 99%

“…The subyearling chinook salmon model was based solely on temperature. Therefore, we used logistic regression (Hosmer and Lemeshow 2000) with 7DAD mean water temperature to develop a species distribution model at the reach scale (1 km) that used observations of subyearling chinook salmon in the JDR basin from Lawrence et al (2012). The model fitted in R had an area-under-the-curve (of the receiver operator characteristic curve) of 0.89.…”

Section: Fish Distribution Modelsmentioning

confidence: 99%

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The interactive effects of climate change, riparian management, and a nonnative predator on stream‐rearing salmon

Lawrence

Stewart‐Koster

Olden

et al. 2014

Ecological Applications

Self Cite

114

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Predicting how climate change is likely to interact with myriad other stressors that threaten species of conservation concern is an essential challenge in aquatic ecosystems. This study provides a framework to accomplish this task in salmon-bearing streams of the northwestern United States, where land-use-related reductions in riparian shading have caused changes in stream thermal regimes, and additional warming from projected climate change may result in significant losses of coldwater fish habitat over the next century. Predatory, nonnative smallmouth bass have also been introduced into many northwestern streams, and their range is likely to expand as streams warm, presenting an additional challenge to the persistence of threatened Pacific salmon. The goal of this work was to forecast the interactive effects of climate change, riparian management, and nonnative species on stream-rearing salmon and to evaluate the capacity of restoration to mitigate these effects. We intersected downscaled global climate forecasts with a local-scale water temperature model to predict mid- and end-of-century temperatures in streams in the Columbia River basin. We compared one stream that is thermally impaired due to the loss of riparian vegetation and another that is cooler and has a largely intact riparian corridor. Using the forecasted stream temperatures in conjunction with fish-habitat models, we predicted how stream-rearing chinook salmon and bass distributions would change as each stream warmed. In the highly modified stream, end-of-century warming may cause near total loss of chinook salmon-rearing habitat and a complete invasion of the upper watershed by bass. In the less modified stream, bass were thermally restricted from the upstream-most areas. In both systems, temperature increases resulted in higher predicted spatial overlap between stream-rearing chinook salmon and potentially predatory bass in the early summer (two- to fourfold increase) and greater abundance of bass. We found that riparian restoration could prevent the extirpation of chinook salmon from the more altered stream and could also restrict bass from occupying the upper 31 km of salmon-rearing habitat. The proposed methodology and model predictions are critical for prioritizing climate-change adaptation strategies before salmonids are exposed to both warmer water and greater predation risk by nonnative species.

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Spatiotemporal patterns and habitat associations of smallmouth bass (Micropterus dolomieu) invading salmon‐rearing habitat

Cited by 32 publications

References 54 publications

Effects of Multiple Nonnative Fish on an Imperiled Cyprinid, Hornyhead Chub

Effects of Multiple Nonnative Fish on an Imperiled Cyprinid, Hornyhead Chub

Bioenergetics Models to Estimate Numbers of Larval Lampreys Consumed by Smallmouth Bass in Elk Creek, Oregon

The interactive effects of climate change, riparian management, and a nonnative predator on stream‐rearing salmon

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