Testate Amoeba Functional Traits and Their Use in Paleoecology

Marcisz, Katarzyna; Jassey, Vincent E. J.; Kosakyan, Anush; Krashevska, Valentyna; Lahr, Daniel J. G.; Lara, Enrique; Lamentowicz, Łukasz; Lamentowicz, Mariusz; Macumber, Andrew; Mazei, Yuri A.; Mitchell, Edward A. D.; Nasser, Nawaf A.; Patterson, R. Timothy; Roe, Helen; Singer, David; Tsyganov, Andrey N.; Fournier, Bertrand

doi:10.3389/fevo.2020.575966

Cited by 57 publications

(50 citation statements)

References 287 publications

(504 reference statements)

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“…The forest undergrowth was dominated by Ericaceae. The number of grains in this position is limited by high acidification, while the total tree pollen reaches even up to 90%, which is quite common for this region, as confirmed by data from the Polistovo-Lovatskaya mire (Nosova et al, 2017), and more eastward situated Melekhovo (Velichko et al, 2002), Prigorodnoe (Tarasov et al, 2019), and Karstovoe mire (Tsyganov et al, 2019), as well as Tver (Novenko et al, 2014, 2017) or Pskov region (Nosova et al, 2019), and data from Jaczno bog in eastern Poland (Marcisz et al, 2020a). The forest cover in the Western Poland territory considered for comparison had already less than 50% of AP in this period (Lamentowicz et al, 2007, 2009, 2015; Słowiński et al, 2019), similar to Latvia (Stivrins et al, 2014).…”

Section: Discussionsupporting

confidence: 59%

Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia

et al. 2021

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Peatlands are important records of past environmental changes. Based on a multiproxy analysis, the main factors influencing the evolution of a peatland can be divided into autogenic and allogenic. Among the important allogenic factors, apart from climate change, are deforestation and drainage, which are directly associated with human impact. Numerous consequences arise from these processes, the most important of which are physical and chemical denudation in the catchment and the related hydrological disturbances in the catchment and peatland. The present study determined how human activities and the past climatic variability mutually influenced the development of a small peatland ecosystem. The main goals of the study were: (1) to trace the local changes of the peatland history over the past 600 years, (2) to investigate their relationship with changes in regional hydroclimate patterns, and (3) to estimate the sensitivity of a small peatland to natural and human impact. Our reconstructions were based on a multiproxy analysis, including the analysis of pollen, macrofossils, Chironomidae, Cladocera, and testate amoebae. Our results showed that, depending on the changes in water level, the history of peatland can be divided into three phases as follows: 1/the phase of stable natural conditions, 2/phase of weak changes, and 3/phase of significant changes in the catchment. Additionally, to better understand the importance of the size of catchment and the size of the depositional basin in the evolution of the studied peatland ecosystem, we compared data from two peatlands – large and small – located close to each other. The results of our study indicated that “size matters,” and that larger peatlands are much more resilient and resistant to rapid changes occurring in the direct catchment due to human activities, whereas small peatlands are more sensitive and perfect as archives of environmental changes.

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Section: Discussionsupporting

confidence: 59%

Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia

et al. 2021

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“…Trait-based studies help researchers understand the mechanisms of ecological processes and, therefore, their potential in paleoenvironmental reconstructions cannot be ignored (Marcisz et al, 2020). The studied organisms were affected over time by a range of direct and indirect variables.…”

Section: Introductionmentioning

confidence: 99%

Chironomidae Morphological Types and Functional Feeding Groups as a Habitat Complexity Vestige

et al. 2021

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Chironomid (Diptera: Chironomidae) larvae play an important role in a wide range of aquatic ecosystems. The study focuses on Chironomidae trophic guilds and morphological types as indicator traits in reconstructions of habitat changes in shallow water bodies. Mentum and ventromental plates are important mouthparts whose shape depends on food type and feeding behavior. Chironomidae larvae strongly vary in the mode of life and feeding habits, representing almost every feeding group. Here we classified the mentum types into 16 groups and tested if they indicated similar past habitat changes as the Chironomidae functional feeding groups (FFGs), and tribes/subfamilies. Paleoecological data of biotic and abiotic proxies were derived from short sequences from a Late Glacial oxbow and a nearby medieval moat located in Central Poland. The study revealed that the habitat substratum structure, vegetation and physicochemical conditions are associated both with the feeding types and morphological traits. This provides a valuable tool for future reconstructions of habitat changes.

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“…As the species composition of these protists depends on environmental conditions, they are frequently used to reconstruct the past climate and environment ( Ellison 1995 , Mitchell et al 2001 , Mitchell et al 2008 ). The increasing use of testate amoebae in palaeoecological studies in the last decades demands the knowledge of modern assemblages for comparative analysis ( Mitchell et al 2001 , Charman 2001 , Booth 2002 , Swindles et al 2015 ) and for the establishment of their functional traits ( Mitchell et al 2014 , Amesbury et al 2016 , Marcisz et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Distribution of testate amoebae in bryophyte communities in São Miguel Island (Azores Archipelago)

Souto¹,

Gonçalves²,

Pontevedra-Pombal³

et al. 2021

BDJ

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Testate amoebae are a polyphyletic group of protists living preferentially in soils, freshwaters and wetlands. These Protozoa have a worldwide distribution, but their presence and diversity in the Azores (a remote oceanic archipelago) is poorly known, with only twelve taxa recorded so far. The published information reflects occasional collections from sporadic field visits from naturalists to São Miguel Island, mainly in the nineteenth century. To overcome this limitation, a standardised survey was carried out on the Island, sampling different types of habitats from several localities to provide the distribution and information on species ecology of testate amoebae. In this study, 43 species of testate amoebae were recorded (within a total of 499 occurrences), belonging to two orders of Protista (26 Arcellinida and 17 Euglyphida). The most frequently occurring testate amoebae were Euglypha strigosa, Trinema lineare, Euglypha rotunda, Assulina muscorum and Cyclopyxis eurystoma. The most diverse genus was Euglypha (six species). A total of 38 species are new records for the Azores Archipelago. These data help to improve knowledge of the geographical distribution of testate amoebae in the northern hemisphere and their diversity in the Azores Archipelago.

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Testate Amoeba Functional Traits and Their Use in Paleoecology

Cited by 57 publications

References 287 publications

Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia

Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia

Chironomidae Morphological Types and Functional Feeding Groups as a Habitat Complexity Vestige

Distribution of testate amoebae in bryophyte communities in São Miguel Island (Azores Archipelago)

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