Investigating the invasion of the nonindigenous zooplankter, Eubosmina coregoni, in Lake Winnipeg, Manitoba, Canada

Suchy, Karyn D.; Salki, Alex; Hann, Brenda J.

doi:10.1016/j.jglr.2009.12.004

Cited by 14 publications

(6 citation statements)

References 52 publications

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“…), GAMLS is insensitive to irregular sample intervals (Rigby and Stasinopoulos ), and sample prior weights account for changes in sediment compaction and accumulation rate in the GAMLS. Similarly, we infer that sediment bioturbation did not alter estimates of past phytoplankton variability because composition of past cladoceran (Suchy et al ; Bunting et al ) and other invertebrate taxa (B.J. Hann, University of MB, unpubl.…”

Section: Discussionmentioning

confidence: 66%

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20^thcentury agriculture

et al. 2016

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Eutrophication can initiate sudden ecosystem state change either by slowly pushing lakes toward a catastrophic tipping point beyond which self-reinforcing mechanisms establish an alternate stable state, or through rapid but persistent changes in external forcing mechanisms. In principle, these processes can be distinguished by determining whether historical changes in focal parameters (phytoplankton) exhibit transient (rising then declining) or continuously-elevated variability characteristic of alternate stable states or a "paradox of enrichment," respectively. We tested this hypothesis in the south basin of Lake Winnipeg, Canada, a site with intense blooms of N 2 -fixing cyanobacteria since 1990, but for which little is known of earlier limnological conditions, causes of eutrophication, or whether modern conditions represent a alternate stable state. Paleolimnological analysis revealed that the basin was naturally mesotrophic (15-20 lg P L 21

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Section: Discussionmentioning

confidence: 66%

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20^thcentury agriculture

et al. 2016

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“…For example, Sarnelle and Knapp () found that after removal of zooplanktivorous fish from small California alpine lakes (1.7–3.4 ha surface area), intensive water column sampling with plankton nets required up to 4 yr to detect native Daphnia middendorffiana that were re‐establishing from resting eggs. Similarly, where paleolimnology has been used to reconstruct invasion timelines of Daphnia similis and Eubosmina coregoni , years were required to achieve major bursts in population sizes (Hairston et al ; Suchy et al ).…”

Section: Discussionmentioning

confidence: 99%

Colonization dynamics of the invasive predatory cladoceran, Bythotrephes longimanus, inferred from sediment records

Branstrator

Beranek

Brown

et al. 2017

Limnology & Oceanography

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Despite the central role of colonization to invasion biology, little is known about the early dynamics of founder populations because this time period is often unobserved and short-lived. This study documents with high resolution the early population ecology of an invading freshwater zooplankton, Bythotrephes longimanus (Cladocera : Cercopagidae), by measuring accumulation rates of its caudal spine in sediments. Using dated ( 210 Pb and 137 Cs) sediment cores from four spatially distinct sites in Island Lake Reservoir (Minnesota, USA), we describe its first presence, early distribution, growth trajectory, and early impacts on prey. The sediment record shows that B. longimanus first appeared and was widely distributed in the lake in 1982 (6 2 yr, standard deviation), 8 yr before its first detection in the water, making it one of the earliest documented invasions in North America and suggesting that ecosystems may serve as dispersal hubs for years prior to detection. Logistic growth models describing spine accumulation rates show that B. longimanus required about two decades to achieve an annual equilibrium (K). Prolonged buildup to K may owe to several factors, including accumulation of a sufficiently large bank of resting eggs, the obligate overwintering life stage. Early exponential growth was incongruent with the presence of a lag phase. Post invasion, Daphnia mendotae became proportionally the most abundant daphniid in the lake, but the timing of the switch in prey species composition coincided more with the proliferation of B. longimanus density and its attainment of K than with its arrival to the lake.

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“…This trend is driven by the addition of a single taxon, which is an invasive the invasive Eubosmina coregoni, and coincides with the eutrophication of this lake as it has in others (e.g. Suchy, Salki & Hann, 2010).…”

Section: Discussionmentioning

confidence: 64%

“…Indeed, the skeletal remains of only few pelagic Cladocera (e.g. Suchy, Salki & Hann, 2010). In most cases, more pelagic Cladocera species are present in the contemporary community, but cannot be measured in lake sediments using skeletal remains alone.…”

Section: Discussionmentioning

confidence: 99%

Declines in littoral species richness across both spatial and temporal nutrient gradients: a palaeolimnological study of two taxonomic groups

2012

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Summary 1. Using a palaeolimnological approach in shallow lakes, we quantified the species richness responses of diatoms and Cladocera to phosphorus enrichment. We also examined differences in species richness responses between littoral and pelagic assemblages of our focal communities. To address both spatial and temporal relationships, our study includes an analysis of both surface sediments from 40 lakes and of a lake sediment record spanning c. 120 years. The objective of our study was to determine whether similar species richness patterns occurred across trophic levels, as well as along spatial and temporal gradients. 2. We found that both diatom and Cladocera species richness estimates significantly declined with increasing phosphorus across space and through time. When the assemblages were subdivided according to known habitat preferences, littoral biodiversity maintained a negative trend, whereas pelagic species richness tended to show no relationship with phosphorus. 3. Negative productivity–diversity patterns have been observed across almost all palaeolimnological studies that span large productivity gradients. This congruence in patterns is most likely due to the similarity in data collection methods and in focal communities studied. The contrasting responses between littoral and pelagic assemblages may be explained by the differences in physical habitat and the pool of taxa in each of these environments. Consistent with the literature, we found statistical support for the idea that littoral diversity declines could be explained by an interaction between macrophytes and nutrients along strong trophic gradients. The general lack of a diversity response in our pelagic assemblages could be attributable to the limited pool of subfossil taxa. The response of the pelagic diatom could also be related to their broad range of nutrient tolerances. 4. The observed negative response of species richness to phosphorus enrichment, particularly in the littoral assemblages, has implications for ecosystems functioning because communities with reduced biodiversity often are less resilient to anthropogenic change.

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Investigating the invasion of the nonindigenous zooplankter, Eubosmina coregoni, in Lake Winnipeg, Manitoba, Canada

Cited by 14 publications

References 52 publications

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20^thcentury agriculture

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20^thcentury agriculture

Colonization dynamics of the invasive predatory cladoceran, Bythotrephes longimanus, inferred from sediment records

Declines in littoral species richness across both spatial and temporal nutrient gradients: a palaeolimnological study of two taxonomic groups

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Investigating the invasion of the nonindigenous zooplankter, Eubosmina coregoni, in Lake Winnipeg, Manitoba, Canada

Cited by 14 publications

References 52 publications

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20thcentury agriculture

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20thcentury agriculture

Colonization dynamics of the invasive predatory cladoceran, Bythotrephes longimanus, inferred from sediment records

Declines in littoral species richness across both spatial and temporal nutrient gradients: a palaeolimnological study of two taxonomic groups

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Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20^thcentury agriculture

Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20^thcentury agriculture