Insights from pollen, non-pollen palynomorphs and testate amoebae into the evolution of Lake Simcoe

Volik, Olena; McCarthy, Francine M.G.; Riddick, Nicholas L.

doi:10.1007/s10933-016-9900-8

Cited by 12 publications

(5 citation statements)

References 41 publications

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“…Tolonen (1986) provides an overview on the ecology of M. corona and D. amphora, both of which are linked to eutrophic conditions. These ecological inferences are in accordance with other studies from lakes in Ontario, Canada (Volik et al 2016), Wuhan, China (Qin et al 2009) and Massachusetts, USA (Drljepan et al 2014) that report increases in the abundance of M. corona associated with nutrient enrichment. Conversely, D. amphora is rarely discussed in this regard.…”

Section: Palaeo-inferred Testate Amoeba Ecologysupporting

confidence: 92%

“…Difflugia oblonga ''tenuis'' and P. compressa are highly significant (p \ 0.001) indicator taxa for this mesotrophic phase. Other palaeolimnological studies have also reported an abundance of P. compressa during inferred mesotrophic periods as delineated by pollen and NPP from Lake Simcoe, Canada (Volik et al 2016) and Sluice Pond, USA (Drljepan et al 2014). Thus, P. compressa may have an affinity for mesotrophic lake conditions.…”

Section: Palaeo-inferred Testate Amoeba Ecologymentioning

confidence: 93%

“…These include plant macrofossils (Davidson et al 2005;Sayer et al 2010b), diatoms (Anderson et al 1993;Bennion et al 2011), cladocerans (Brodersen et al 1998;Davidson et al 2011), chironomids (Brooks et al 2001;Zhang et al 2012) and non-pollen palynomorphs (NPP) (Drljepan et al 2014;Volik et al 2016). Due to a lack of instrumental monitoring of lake conditions, palaeolimnological approaches are essential for assessing long-term trends, determining pre-disturbance conditions ) and for informing conservation strategies (Kowalewski et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

et al. 2017

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Arcellinida (lobose testate amoebae) preserve well in lake sediments and have shown great potential as palaeolimnological indicators, but a limited understanding of their ecology prevents more indepth interpretations of both contemporary and fossil assemblages. Loch Leven, Scotland, has a well-documented history of nutrient-enrichment and associated lake biological change, creating a temporal gradient along which testate amoeba ecology can be investigated. Plant macrofossil data from a dated sediment core (LEVE14) indicate that a transition from oligomesotrophic to eutrophic conditions occurred over at least the last 200 years, enabling direct comparisons to be drawn with fossil testate amoeba assemblages from the same core. Cluster analysis and principal components analysis show that testate amoebae and macrophytes responded synchronously to an early phase of nutrient-enrichment after ca. AD 1200, and to anthropogenic water-level lowering and further enrichment after ca. AD 1830. The results of indicator species analysis (IndVal) support the suggestion inferred previously that Cucurbitella tricuspis is an indicator of nutrient-enrichment, while the association of some less abundant taxa, specifically Difflugia amphora and Mediolus corona, with eutrophic environments is also corroborated. Overall, the testate amoeba assemblage response appears to reflect a complex interaction of factors which were ultimately driven by eutrophication. These include variations in microhabitat associated with changing plant structure and sedimentary conditions influenced by macrophyte community succession. In particular, a shift from an oligo-mesotrophic macrophyte assemblage composed of isoetid plants to one dominated by Potamogeton spp. and dense stands of Characeae is suggested to influence the relative proportions of sediment dwelling and plant-associated testate amoebae. The results highlight the utility of testate amoebae as benthic indicators of lake nutrient-enrichment and demonstrate the value of using multi-proxy palaeolimnological data to refine the ecology of lesser-studied palaeoecological groups.

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Section: Palaeo-inferred Testate Amoeba Ecologysupporting

confidence: 92%

Section: Palaeo-inferred Testate Amoeba Ecologymentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

et al. 2017

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“…The testate amoeba species that distinguishes this group is Cucurbitella tricuspis, a known bioindicator of eutrophication in temperate lakes Reinhardt et al, 2005;Kihlman and Kauppila, 2012). It is considered a planktonic species, probably with high lipid contents that improve its buoyancy, and is usually associated with Spirogyra algae (Volik et al, 2016). Importantly, C. tricuspis may be carried between lakes by wind currents, which explains their presence in high numbers, even in contaminated lakes .…”

Section: Cucurbitella Tricuspis Assemblagementioning

confidence: 99%

Ecological drivers of testate amoeba diversity in tropical water bodies of central Mexico

et al. 2018

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Testate amoebae are unicellular organisms characterized by a shell-like test. Due to their potential use as bioindicators (and paleoindicators), these organisms have been increasingly studied in the last decade, particularly in temperate latitudes. This study's objective was two-fold: to identify the testate amoeba communities sampled from 29 water bodies in Mexico and to determine if their presence and distribution also made them suitable bioindicators for tropical latitudes. A total of 40 taxa were recorded within 12 genera, and six significant variables -oxygen, pH, depth, temperature, conductivity, and total alkalinity -that explained testate amoeba distribution within and among the water bodies were identified through a canonical correspondence analysis. The Q-mode clusters rendered five assemblages, each named after their respective dominant species: 1) Centropyxis aculeata strain "aculeata" assemblage, 2) Difflugia oblonga strain "bryophila" assemblage, 3) diverse assemblage, 4) Cucurbitella tricuspis assemblage, and 5) Difflugia protaeiformis strain "acuminata" assemblage. We found that Cucurbitella tricuspis and the Difflugia protaeiformis strain "acuminata" have similar ecological preferences to those reported previously for temperate lakes, with the former identified as an indicator of eutrophic environments and the latter as an indicator of low oxygen levels. On the other hand, Centropyxis aculeata strain "aculeata" and Arcella vulgaris seem to indicate adverse conditions, but the source of this environmental stress apparently differs from that reported in temperate latitudes. Although this stress source could not be identified in all cases, our study nonetheless demonstrates that testate amoebae in the water bodies of central Mexico could reveal the presence of environmental stress.

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“…Due to the great importance of Diatomeae in lake-based reconstruction, other algae groups are neglected in this paper. It is, however, noteworthy that such algae as Chlorophyta, Pediastrum, or Cyanobacteria might be also useful as proxies of environmental alteration, especially those that link to eutrophication [47,48].…”

Section: Trophy Statementioning

confidence: 99%

The role of paleolimnology in climate and environment reconstruction and lake restoration in light of research on selected bioindicators

Wojewódka-Przybył

Hruševar

2020

Holist. approach environ.

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Paleolimnologists and ecologists study biotic and abiotic variables to track long-term and short-term environment changes. Microscopic invertebrates, phytoplankton of freshwater ecosystems, and pollen grains have been extensively studied during the last decades. Surveys of modern and fossil biota composition might provide information about past changes caused by climate alteration and human activity. Furthermore, research on the modern population of these biological proxies may be utilized to assess environmental quality and restoration measures. This paper synthesizes knowledge of the use of selected microscopic invertebrates (Cladocera, Copepoda, Ostracoda, Rotifera), phytoplankton, and pollen grains for the aforementioned issues. This review shows that the ability of these biological proxies to indicate environment changes is versatile. Some of them may be utilized to track long-term changes of temperature (pollen) or pH (Diatomeae). Others are useful to reconstruct paleosalinity (Ostracoda) or conductivity (Ostracoda, Diatomeae), while the utilization of Rotifera and Copepoda in paleoreconstruction, due to the very poor preservation of the remains, is very limited, although these fauna are very useful for assessing modern water quality. Larger species of Cladocera are significant for lake restoration

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Insights from pollen, non-pollen palynomorphs and testate amoebae into the evolution of Lake Simcoe

Cited by 12 publications

References 41 publications

Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

Ecological drivers of testate amoeba diversity in tropical water bodies of central Mexico

The role of paleolimnology in climate and environment reconstruction and lake restoration in light of research on selected bioindicators

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