Recent changes in density, biomass, recruitment, size structure, and nutritional state of Dreissena populations in southern Lake Michigan

Nalepa, Thomas F.; Fanslow, David L.; Pothoven, Steven A.

doi:10.1016/j.jglr.2010.03.013

Cited by 150 publications

(96 citation statements)

References 63 publications

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“…They can be performed using laboratory manipulations, mesocosms, and in situ CO 2 perturbation experiments (Fabry et al, 2008). For the Laurentian Great Lakes, one particular genus that should be studied across its life stages is the dreissenid mussel, as these mollusks have significantly shaped the ecosystem since their invasion (Fahnenstiel et al, 2010;Nalepa et al, 2010;Chapra et al, 2012), greatly stress the already-declining native mussels, and make their shells out of aragonite.…”

Section: Box 1 Survey Of Great Lakes Scientistsmentioning

confidence: 99%

The Potential for CO2-Induced Acidification in Freshwater: A Great Lakes Case Study

Phillips¹,

McKinley²,

Bennington³

et al. 2015

oceanog

102

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Section: Box 1 Survey Of Great Lakes Scientistsmentioning

confidence: 99%

The Potential for CO2-Induced Acidification in Freshwater: A Great Lakes Case Study

Phillips¹,

McKinley²,

Bennington³

et al. 2015

oceanog

102

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“…The period [2007][2008] captures conditions associated with the major expansion of quagga mussels into deep water, which started in 2004 Nalepa et al, 2010), and the loss of the spring phytoplankton bloom Vanderploeg et al, 2010); thus, it could represent a critical transition to bottom-up forces strongly affecting zooplankton dynamics. In fact, Kerfoot et al (2010) observed some zooplankton species decreased along cross-lake transects during April in 2007 and 2008 relative to 2006, which they attributed to the loss of the bloom.…”

mentioning

confidence: 99%

Seasonal zooplankton dynamics in Lake Michigan: Disentangling impacts of resource limitation, ecosystem engineering, and predation during a critical ecosystem transition

Vanderploeg

Pothoven

Fahnenstiel

et al. 2012

Journal of Great Lakes Research

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Fahnenstiel, Gary L.; Cavaletto, Joann F.; Liebig, James R.; Stow, Craig A.; Nalepa, Thomas F.; Madenjian, Charles P.; and Bunnell, David B., "Seasonal zooplankton dynamics in Lake Michigan: Disentangling impacts of resource limitation, ecosystem engineering, and predation during a critical ecosystem transition" (2012 We examined seasonal dynamics of zooplankton at an offshore station in Lake Michigan from 1994 to 2003 and 2007 to 2008. This period saw variable weather, declines in planktivorous fish abundance, the introduction and expansion of dreissenid mussels, and a slow decline in total phosphorus concentrations. After the major expansion of mussels into deep water (2007)(2008), chlorophyll in spring declined sharply, Secchi depth increased markedly in all seasons, and planktivorous fish biomass declined to record-low levels. Overlaying these dramatic ecosystem-level changes, the zooplankton community exhibited complex seasonal dynamics between 1994-2003 and 2007-2008. Phenology of the zooplankton maximum was affected by onset of thermal stratification, but there was no other discernable effect due to temperature. Interannual variability in zooplankton biomass during 1994 and 2003 was strongly driven by planktivorous fish abundance, particularly age-0 and age-1 alewives. In 2007-2008, there were large decreases in Diacyclops thomasi and Daphnia mendotae possibly caused by food limitation as well as increased predation and indirect negative effects from increases in Bythotrephes longimanus abundance and in foraging efficiency associated with increased light penetration. The Bythotrephes increase was likely driven in part by decreased predation from yearling and older alewife. While there was a major decrease in epilimnetic-metalimnetic herbivorous cladocerans in 2007-2008, there was an increase in large omnivorous and predacious calanoid copepods, especially those in the hypolimnion. Thus, changes to the zooplankton community are the result of cascading, synergistic interactions, including a shift from vertebrate to invertebrate planktivory and mussel ecosystem impacts on light climate and chlorophyll.

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“…Similar to the present study, Stoeckmann (2003) observed that D. bugensis at 98C could be induced to spawn by serotonin; whereas, D. polymorpha could not. In a recent study describing changes in dreissenid populations in southern Lake Michigan Nalepa et al (2010) identified differences between adult D. bugensis and D. polymorpha, yet in describing reproductive patterns the resolution of the veliger data did not allow for differentiation between species. For the Nalepa et al (2010) study this was not a great concern because at the time of the most recent sampling no adult D. polymorpha were found suggesting that the veligers were all D. bugensis.…”

Section: Discussionmentioning

confidence: 99%

“…In a recent study describing changes in dreissenid populations in southern Lake Michigan Nalepa et al (2010) identified differences between adult D. bugensis and D. polymorpha, yet in describing reproductive patterns the resolution of the veliger data did not allow for differentiation between species. For the Nalepa et al (2010) study this was not a great concern because at the time of the most recent sampling no adult D. polymorpha were found suggesting that the veligers were all D. bugensis. However, for early detection of species a technique is needed to identify species specific veligers.…”

Section: Discussionmentioning

confidence: 99%

Reproduction and genetic detection of veligers in changingDreissenapopulations in the Great Lakes

et al. 2011

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Abstract. Dreissenid bivalves, Dreissena polymorpha (zebra mussel) and Dreissena bugensis (quagga mussel) are biofouling species that invaded the Great Lakes region of North America from source populations in Europe in the 1980s. Initially, D. polymorpha spread faster and farther; however, D. bugensis have recently displaced D. polymorpha in many areas of the Great Lakes and was the first to be found west of the Continental Divide. Early detection of dreissenids is important in anticipating and preventing potentially high economic impacts. To study population dynamics and to enhance detection methods, we assessed ''spawnability'' using a serotonin bioassay and developed a new, sensitive, multiplex PCR method to identify veligers and verify adult species. Contrasting riverine populations were identified in the Saginaw River (100% D. polymorpha) and the Detroit River at Belle Isle (100% D. bugensis in 2010), and mixed populations of mussels (10% to ;50% D. polymorpha) were found in Saginaw Bay, Lake Huron. In 1994, when the Detroit River population at Belle Isle was virtually all D. polymorpha (Ram et al. 1996), spawning could not be induced by serotonin until late May, and peak spawnability did not occur until early June. In 2010, D. bugensis at the same site could be induced to spawn in the first week of April, and reached near maximal spawning intensity by mid-May. In 2010, Detroit River veligers were first observed in April and, by PCR species-specific detection, were 100% D. bugensis. Veligers changed to a mixed population of both species later in May and rose to a peak, mixed population in early June. These experiments demonstrate a quantitative, species-specific detection of dreissenid veligers, and lay the groundwork for determining the role of early reproduction and other mechanisms in mediating the displacement of one species by a closely related ''cousin.''

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Recent changes in density, biomass, recruitment, size structure, and nutritional state of Dreissena populations in southern Lake Michigan

Cited by 150 publications

References 63 publications

The Potential for CO2-Induced Acidification in Freshwater: A Great Lakes Case Study

The Potential for CO2-Induced Acidification in Freshwater: A Great Lakes Case Study

Seasonal zooplankton dynamics in Lake Michigan: Disentangling impacts of resource limitation, ecosystem engineering, and predation during a critical ecosystem transition

Reproduction and genetic detection of veligers in changingDreissenapopulations in the Great Lakes

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