Introduced Lake Trout Produced a Four-Level Trophic Cascade in Yellowstone Lake

Abstract Introduction of lake trout Salvelinus namaycush into a system can add a trophic level, potentially affecting organisms at lower trophic levels. Similar to many lakes and reservoirs in the western United States, lake trout were introduced into Yellowstone Lake, Wyoming. Previous studies showed that lake trout reduced the population and altered the size structure of native Yellowstone cutthroat trout Oncorhynchus clarkii bouvieri in Yellowstone Lake, but we sought to determine the degree to which lake trout predation changed lower trophic levels. We predicted that the structure of lower trophic levels would change in conformance with trophic cascade theory because Yellowstone cutthroat trout consume zooplankton. We compared zooplankton and phytoplankton assemblages between the period when Yellowstone cutthroat trout were abundant and the period after they declined. As predicted by trophic cascade theory, zooplankton biomass shifted from being dominated by copepods before lake trout introduction to ...

[1]  J. Ruzycki,et al.  Natural chemical markers identify source and date of introduction of an exotic species: lake trout (Salvelinus namaycush) in Yellowstone Lake , 2005 .

[2]  S. Dodson,et al.  Predation, Body Size, and Composition of Plankton. , 1965, Science.

[3]  Daniel E. Schindler,et al.  CLIMATE CHANGE UNCOUPLES TROPHIC INTERACTIONS IN AN AQUATIC ECOSYSTEM , 2004 .

[4]  A. Huryn,et al.  Body Size: Relationship between biomass turnover and body size for stream communities , 2007 .

[5]  R. Patrick,et al.  The diatoms of the United States. , 1966 .

[6]  Michael L. Pace,et al.  Ecosystem size determines food-chain length in lakes , 2022 .

[7]  J. Gillooly,et al.  Effect of body size and temperature on generation time in zooplankton , 2000 .

[8]  S. Carpenter,et al.  Influence of different sized Daphnia species on chlorophyll concentration and summer phytoplankton community structure in eutrophic Wisconsin lakes , 1999 .

[9]  S. Fretwell.  Food chain dynamics: the central theory of ecology? , 1987 .

[10]  A. Langeland,et al.  Gill raker structure and selective predation on zooplankton by particulate feeding fish , 1995 .

[11]  Brian D. Ertel,et al.  Nonnative Lake Trout Result in Yellowstone Cutthroat Trout Decline and Impacts to Bears and Anglers , 2005 .

[12]  J. Link,et al.  Relationships of Lake Herring (Coregonus artedi) Gill Raker Characteristics to Retention Probabilities of Zooplankton Prey , 1998 .

[13]  David A. Beauchamp,et al.  EFFECTS OF INTRODUCED LAKE TROUT ON NATIVE CUTTHROAT TROUT IN YELLOWSTONE LAKE , 2003 .

[14]  D. Post,et al.  Intraspecific variation in a predator affects community structure and cascading trophic interactions. , 2008, Ecology.

[15]  Daniel E. Schindler,et al.  TROPHIC CASCADES, NUTRIENTS, AND LAKE PRODUCTIVITY: WHOLE‐LAKE EXPERIMENTS , 2001 .

[16]  D. Schindler,et al.  Cascading Trophic Interactions in an Oligotrophic Species-poor Alpine Lake , 2006, Ecosystems.

[17]  S. Carpenter,et al.  Shifts in phytoplankton size structure and community composition during grazing by contrasting zooplankton assemblages , 1985 .

[18]  Gaku Takimoto,et al.  Proximate structural mechanisms for variation in food-chain length , 2007 .

[19]  E. Theriot,et al.  Responses of phytoplankton to varied resource availability in large lakes of the Greater Yellowstone Ecosystem , 1999 .

[20]  J. Knight.  The limnology of the West Thumb of Yellowstone Lake, Yellowstone National Park, Wyoming , 1975 .

[21]  S. Carpenter,et al.  Regulation of Lake Primary Productivity by Food Web Structure. , 1987, Ecology.

[22]  E. Borer,et al.  Predator effects on herbivore and plant stability , 2005 .

[23]  Gregory A. Lang,et al.  Dynamics of Lake Michigan Plankton: A Model Evaluation of Nutrient Loading, Competition, and Predation , 1988 .

[24]  J. Arnold,et al.  Yellowstone Fisheries Aquatic Sciences , 2012 .

[25]  Kerim Aydin,et al.  Sustainability of the Lake Superior Fish Community: Interactions in a Food Web Context , 2000, Ecosystems.

[26]  Jae S. Choi,et al.  Trophic Cascades in a Formerly Cod-Dominated Ecosystem , 2005, Science.

[27]  J. Shurin,et al.  The strength of trophic cascades across ecosystems: predictions from allometry and energetics , 2005 .

[28]  G. Polis,et al.  Food Web Complexity and Community Dynamics , 1996, The American Naturalist.

[29]  P. Martinez,et al.  Western Lake Trout Woes , 2009 .

[30]  H. Bottrell.  The relationship between temperature and duration of egg development in some epiphytic cladocera and copepoda from the River Thames, reading, with a discussion of temperature functions , 1975, Oecologia.

[31]  E. Theriot,et al.  Linking planktonic diatoms and climate change in the large lakes of the Yellowstone ecosystem using resource theory , 1996 .

[32]  A. Jensen,et al.  Effects of Fish Removal on the Limnetic Ecosystem of a Eutrophic Lake , 1990 .

[33]  S. D. Cooper,et al.  WHAT DETERMINES THE STRENGTH OF A TROPHIC CASCADE , 2005 .

[34]  S. Interlandi,et al.  LIMITING RESOURCES AND THE REGULATION OF DIVERSITY IN PHYTOPLANKTON COMMUNITIES , 2001 .

[35]  Henri J. Dumont,et al.  The dry weight estimate of biomass in a selection of Cladocera, Copepoda and Rotifera from the plankton, periphyton and benthos of continental waters , 1975, Oecologia.

[36]  Kirk M. Wolter,et al.  An Investigation of Some Estimators of Variance for Systematic Sampling , 1984 .

[37]  E. Theriot,et al.  Long-term Limnological Data from the Larger Lakes of Yellowstone National Park, Wyoming, U.S.A. , 1997 .

[38]  P. Bartlein,et al.  Influence of Basin-Scale Physical Variables on Life History Characteristics of Cutthroat Trout in Yellowstone Lake , 1997 .

[39]  Helmut Hillebrand,et al.  All wet or dried up? Real differences between aquatic and terrestrial food webs , 2006, Proceedings of the Royal Society B: Biological Sciences.

[40]  L. Kaeding,et al.  Lake Trout Discovered in Yellowstone Lake Threaten Native Cutthroat Trout , 1996 .

[41]  Lars G. Rudstam,et al.  Lake Ontario: food web dynamics in a changing ecosystem (1970-2000) , 2003 .

[42]  N. Benson.  Limnology of Yellowstone Lake in Relation to the Cutthroat Trout , 1961 .

[43]  S. D. Cooper,et al.  Effect Size in Ecological Experiments: The Application of Biological Models in Meta‐Analysis , 1997, The American Naturalist.

[44]  P. Budy,et al.  Zooplankton size selection relative to gill raker spacing in rainbow trout , 2005 .

[45]  J. Hodgson,et al.  Opportunistic Foraging by Largemouth Bass (Micropterus salmoides) , 1987 .

[46]  Jessica Gurevitch,et al.  THE META‐ANALYSIS OF RESPONSE RATIOS IN EXPERIMENTAL ECOLOGY , 1999 .

[47]  B. Kerans,et al.  Myxobolus cerebralis in Native Cutthroat Trout of the Yellowstone Lake Ecosystem , 2006 .

[48]  O. Schmitz,et al.  Trophic Cascades in Terrestrial Systems: A Review of the Effects of Carnivore Removals on Plants , 2000, The American Naturalist.

[49]  S. Interlandi,et al.  Assessing the effects of nitrogen deposition on mountain waters: A study of phytoplankton community dynamics , 1998 .

[50]  M. Vanni,et al.  Dynamics of a Boreal Lake Ecosystem during a Long-Term Manipulation of Top Predators , 2005, Ecosystems.

[51]  T. Parsons,et al.  A practical handbook of seawater analysis , 1968 .

[52]  J. Downing,et al.  A Manual on Methods for the Assessment of Secondary Productivity in Fresh Waters , 1984 .

[53]  Elizabeth T. Borer,et al.  A cross-ecosystem comparison of the strength of trophic cascades , 2002 .