• Publications
  • Influence
Diel vertical migration in the Lake Superior pelagic community. I. Changes in vertical migration of coregonids in response to varying predation risk
The distribution of fishes is influenced by a host of physico-chemical and biological variables, including temperature and oxygen, prey abundance, feeding or assimilation rates, and predation risk.Expand
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Diel vertical migration in the Lake Superior pelagic community. II. Modeling trade-offs at an intermediate trophic level
Several hypotheses have been proposed to explain diel vertical migration (DVM); however, they have gener- ally been applied to DVM behavior of a single trophic level. We evaluate the costs (predationExpand
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Fish community and food web responses to a whole-lake removal of coarse woody habitat
Abstract As lakeshores are developed, property owners often thin the riparian forest and remove older logs or fallen limbs from the adjacent littoral zone. This practice alters fish habitat andExpand
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Predicting mercury levels in yellow perch: use of water chemistry, trophic ecology, and spatial traits
Recent research suggests that wetland abundance surrounding lakes, fish trophic position, and fish community composition may influence the bioavailability of mercury (Hg) to fish. To compare the im...
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Predicting the effects of rainbow smelt on native fishes in small lakes: evidence from long-term research on two lakes
We assessed predictability of negative interactions between native fishes and exotic rainbow smelt (Osmerus mordax) through field experiments and long-term data analysis for two lakes in Wisconsin.Expand
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Cyclic dynamics of a yellow perch (Perca flavescens) population in an oligotrophic lake: evidence for the role of intraspecific interactions
Understanding the extent to which repeated oscillations in fish populations are driven by external factors or internal processes within the population is an important challenge. We document cyclicExpand
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Trophic connections in Lake Superior Part I: The offshore fish community
Abstract Detailed diet linkages within the offshore (> 80 m bathymetric depth) food web of Lake Superior are currently not well identified. We used analyses of fish stomach contents to create anExpand
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Empirical evaluation of predator-driven diel vertical migration in Lake Superior
Recent studies on Lake Superior suggest that diel vertical migration (DVM) of prey (generalized Coregonus spp.) may be influenced by the density of predatory siscowet (Salvelinus namaycush). WeExpand
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Light intensity, prey detection and foraging mechanisms of age 0 year yellow perch
The ability of age-0 year yellow perch Perca flavescans to detect prey using visual and mechano-sensory input was examined during laboratory feeding trials at varying light intensities. Perch wereExpand
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Forecasting the spread of invasive rainbow smelt in the Laurentian Great Lakes region of North America.
Rainbow smelt (Osmerus mordax) have invaded many North American lakes, often resulting in the extirpation of native fish populations. Yet, their invasion is incipient and provides the rationale forExpand
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