Recent saltmarsh foraminiferal assemblages from Iceland

Lübbers, Julia; Schönfeld, Joachim

doi:10.1016/j.ecss.2017.11.019

Cited by 17 publications

(10 citation statements)

References 62 publications

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“…Rotaliammina adaperta can dominate the living assemblage of saltmarshes (Lübbers and Schönfeld, 2018). In the study area, it was more frequent (up to 7%) in the inner to mid continental shelf but also was found living in the Aveiro lagoon.…”

Section: Living Foraminiferal Distribution In the Aveiro Lagoon And Cmentioning

confidence: 73%

“…2 I.1) was found with low relative abundance both in the Aveiro Lagoon and in the adjacent inner to mid shelf, except in the lagoon inlet, where this species dominates the living assemblage (reaching 52%). It has been frequently recognized in shallow marine settings (Murray, 1970;Debenay, 1978;Yassini and Jones, 1995), Iceland saltmarshes (Lübbers and Schönfeld, 2018) and RESEARCH PAPER 40 brackish water environments and was even found living in fresh water, from Río de la Plata, Argentina (Boltovskoy, 1957). However, it was found in the epibathyal zone of the Gulf of Cadiz, strongly affected by the Mediterranean Outflow Water (MOW), occupying an epibenthic microhabitat (Schönfeld, 2002).…”

Section: Living Foraminiferal Distribution In the Aveiro Lagoon And Cmentioning

confidence: 99%

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Foraminifera Check List and the Main Species Distribution in the Aveiro Lagoon and Adjacent Continental Shelf (Portugal)

et al. 2019

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This work is based on a compilation of benthic foraminiferal data collected in the Aveiro Lagoon and in the adjacent continental shelf and upper slope (center of Portugal). It intends to provide an overall analysis from transitional to the outer continental shelf of the occurrence and distribution of species in living and to present updated taxonomic data and illustrations of most of the species found in the in the Aveiro Lagoon and in the adjacent continental shelf including in total assemblages. Cluster analysis (CA) and Principal Components Analysis (PCA) interpreted as depth functions allow us to identify the main species in different ecoenvironments and sectors of the study area. The most unusual living assemblage was documented in the lagoon inlet under very strong tidal currents activity, composed mostly by the following species (both in living and total assemblages): Rotaliammina concava, Lepidodeuterammina ochracea, Quinqueloculina seminula, Gavelinopsis praegeri, Paratrochammina haynesi, Remaneica helgolandica and Remaneicella gonzalezi. The distribution patterns of some Trochamminidae and Remaneicidae species whose ecology and distribution pattern are poorly known, have proved to be a marker of more or less hydrodynamic and stable/unstable environments in coastal and transitional marine environments. OCORRÊNCIA DE FORAMINÍFEROS E DISTRIBUIÇÃO DAS PRINCIPAIS ESPÉCIES NA LAGOA DE AVEIRO E NA PLATAFORMA CONTINENTAL ADJACENTE (PORTUGAL)ResumoEste trabalho baseia-se numa compilação de dados foraminíferos bentónicos recolhidos na Laguna de Aveiro e na plataforma continental adjacente (centro de Portugal). Pretende efetuar uma análise geral da distribuição de espécies nas associações vivas e totais (vivas e mortas) na área de estudo, em função da profundidade. Pretende ainda apresentar dados taxonómicos e ilustrações da maioria das espécies encontradas na Laguna de Aveiro e na plataforma continental adjacente. A análise de agrupamento (CA) e a análise de componentes principais (PCA), em função da profundidade, permitem identificar as principais espécies em diferentes ecossistemas e setores da área de estudo. A associação viva mais invulgar foi encontrada na embocadura da Laguna de Aveiro, um ambiente sujeito a forte corrente de maré. Essa associação era composta principalmente pelas seguintes espécies (na associação viva e total): Rotaliammina concava, Lepidodeuterammina ochracea, Quinqueloculina seminula, Gavelinopsis praegeri, Paratrochammina haynesi, Remaneica helgolandica and Remaneicella gonzalezi. Os padrões de distribuição de algumas espécies de Trochamminidae e Remaneicidae, cuja ecologia e padrão de distribuição são pouco conhecidos, mostraram ser um marcador de ambientes mais ou menos hidrodinâmicos e de estabilidade/instabilidade do substrato em ambientes marinhos costeiros e de transição. Palavras-chave: Ecologia. Taxonomia. Imagens digitais. Análise Estatística. Ambientes Transicionais e Costeiros Marinhos.

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Section: Living Foraminiferal Distribution In the Aveiro Lagoon And Cmentioning

confidence: 73%

Section: Living Foraminiferal Distribution In the Aveiro Lagoon And Cmentioning

confidence: 99%

Foraminifera Check List and the Main Species Distribution in the Aveiro Lagoon and Adjacent Continental Shelf (Portugal)

et al. 2019

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“…A long-range transport of propagules by ocean currents or adult individuals by transocean rafting, a medium-range displacement by ichtyochory, and the introduction of alien species by marine traffic or migratory birds have been invoked as dispersal mechanisms for benthic foraminifera (McGann et al 2000;Alve & Goldstein 2003;Riedel et al 2011;Polovodova Asteman & Schönfeld 2016;Guy-Haim et al 2017;Finger 2018). Indeed, source regions of the displaced species have to be identified first before migration routes are delineated and transport mechanisms are constrained (Lübbers & Schönfeld 2018).…”

Section: Discussionmentioning

confidence: 99%

“…The foraminiferal samples were prepared and analysed following the procedures described by Schönfeld et al (2013), and Lübbers & Schönfeld (2018). The volume of the samples ranged from 54 to 77 cm 3 .…”

Section: Methodsmentioning

confidence: 99%

Checklist, assemblage composition, and biogeographic assessment of Recent benthic foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

Schönfeld

Lübbers

2020

Zootaxa

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We describe for the first time subtropical intertidal foraminiferal assemblages from beach sands on São Vincente, Cape Verdes. Sixty-five benthic foraminiferal species were recognised, representing 47 genera, 31 families, and 8 superfamilies. Endemic species were not recognised. The new checklist largely extends an earlier record of nine benthic foraminiferal species from fossil carbonate sands on the island. Bolivina striatula, Rosalina vilardeboana and Millettiana milletti dominated the living (rose Bengal stained) fauna, while Elphidium crispum, Amphistegina gibbosa, Quinqueloculina seminulum, Ammonia tepida, Triloculina rotunda and Glabratella patelliformis dominated the dead assemblages. The living fauna lacks species typical for coarse-grained substrates. Instead, there were species that had a planktonic stage in their life cycle. The living fauna therefore received a substantial contribution of floating species and propagules that may have endured a long transport by surface ocean currents. The dead assemblages largely differed from the living fauna and contained redeposited tests deriving from a rhodolith-mollusc carbonate facies at <20 m water depth. A comparison of the Recent foraminiferal inventory with other areas identified the Caribbean and Mediterranean as the most likely source regions. They have also been constrained as origin points for littoral to subtidal macroorganisms on other Cape Verdean islands. Micro-and macrofaunal evidences assigned the Cape Verde Current and North Equatorial Current as the main trajectories for faunal immigrations. The contribution from the NW African coast was rather low, a pattern that cannot be explained by the currently available information.

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“…Thereafter, the samples were prepared and picked by the author following the procedures described by Schönfeld et al (2012Schönfeld et al ( , 2013 and Lübbers and Schönfeld (2018). Only well-stained specimens from the living fauna were considered in this study.…”

Section: Methodsmentioning

confidence: 99%

Monitoring benthic foraminiferal dynamics at Bottsand coastal lagoon (western Baltic Sea)

Schönfeld

2018

J. Micropalaeontol.

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Abstract. Benthic foraminifera from Bottsand coastal lagoon, western Baltic Sea, have been studied since the mid-1960s. They were monitored annually in late autumn since 2003 at the terminal ditch of the lagoon. There were 12 different species recognised, of which three have not been recorded during earlier investigations. Dominant species showed strong interannual fluctuations and a steady increase in population densities over the last decade. Elphidium incertum, a stenohaline species of the Baltic deep water fauna, colonised the Bottsand lagoon in 2016, most likely during a period of salinities >19 units and water temperatures of 18 • C on average in early autumn. The high salinities probably triggered their germination from a propagule bank in the ditch bottom sediment. The new E. incertum population showed densities higher by an order of magnitude than those of the indigenous species. The latter did not decline, revealing that E. incertum used another food source or occupied a different microhabitat. Elphidium incertum survived transient periods of lower salinities in late autumn 2017, though with reduced abundances, and became a regular faunal constituent at the Bottsand lagoon.

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Recent saltmarsh foraminiferal assemblages from Iceland

Cited by 17 publications

References 62 publications

Foraminifera Check List and the Main Species Distribution in the Aveiro Lagoon and Adjacent Continental Shelf (Portugal)

Foraminifera Check List and the Main Species Distribution in the Aveiro Lagoon and Adjacent Continental Shelf (Portugal)

Checklist, assemblage composition, and biogeographic assessment of Recent benthic foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

Monitoring benthic foraminiferal dynamics at Bottsand coastal lagoon (western Baltic Sea)

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