Experimental assembly of foraminiferal communities from coastal propagule banks

Goldstein, Susan T.; Alve, Elisabeth

doi:10.3354/meps09296

Cited by 63 publications

(60 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although planktonic foraminifera were absent in the fossil record, the sequences of Globigerinita uvula and Neogloboquadrina pachyderma were present in most of the samples (Appendix 2). Goldstein and Alve (2011) demonstrated that distinct assemblages can be grown from the same propagule bank by applying different combinations of environmental conditions. In this case, they were probably transported to the fjord from the neighbouring shelf.…”

Section: Discussionmentioning

confidence: 99%

Ancient DNA sheds new light on the Svalbard foraminiferal fossil record of the last millennium

et al. 2014

View full text Add to dashboard Cite

Recent palaeogenetic studies have demonstrated the occurrence of preserved ancient DNA (aDNA) in various types of fossilised material. Environmental aDNA sequences assigned to modern species have been recovered from marine sediments dating to the Pleistocene. However, the match between the aDNA and the fossil record still needs to be evaluated for the environmental DNA approaches to be fully exploited. Here, we focus on foraminifera in sediments up to one thousand years old retrieved from the Hornsund fjord (Svalbard). We compared the diversity of foraminiferal microfossil assemblages with the diversity of aDNA sequenced from subsurface sediment samples using both cloning and high-throughput sequencing (HTS). Our study shows that 57% of the species archived in the fossil record were also detected in the aDNA data. However, the relative abundance of aDNA sequence reads and fossil specimens differed considerably. We also found a limited match between the stratigraphic occurrence of some fossil species and their aDNA sequences, especially in the case of rare taxa. The aDNA data comprised a high proportion of non-fossilised monothalamous species, which are known to dominate in modern foraminiferal communities of the Svalbard region. Our results confirm the relevance of HTS for studying past micro-eukaryotic diversity and provide insight into its ability to reflect fossil assemblages. Palaeogenetic studies including aDNA analyses of non-fossilised groups expand the range of palaeoceanographical proxies and therefore may increase the accuracy of palaeoenvironmental reconstructions.

show abstract

Section: Discussionmentioning

confidence: 99%

Ancient DNA sheds new light on the Svalbard foraminiferal fossil record of the last millennium

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The experimental method used here included two modifications of the method described by , adapted from Goldstein and Alve (2011). The methods utilise the growth of juvenile individuals from a "propagule bank" to indicate a positive response to the conditions presented in the laboratory.…”

Section: Experiments Preparationmentioning

confidence: 99%

The response of Nonionella iridea and other benthic foraminifera to “fresh” organic matter enrichment and physical disturbance

Duffield

Hess

Norling

et al. 2015

Marine Micropaleontology

View full text Add to dashboard Cite

“…Thereafter, in the home laboratory we used North Sea water adjusted to the respective core site salinity (34.9‰) by addition of Hobby Marine sea salt for the subsequent replenishing of parts of the experimental seawater cycle. Hereby, filtering over a 2 μm mesh ensured the removal of potential North Sea foraminiferal propagules (Alve and Goldstein, 2003;Goldstein and Alve, 2014). The experimental seawater was tagged with 0.01 g/L Calcein .…”

Section: Methodsmentioning

confidence: 99%

Novel high-pressure culture experiments on deep-sea benthic foraminifera — Evidence for methane seepage-related δ13C of Cibicides wuellerstorfi

Wollenburg

Raitzsch

Tiedemann

2015

Marine Micropaleontology

View full text Add to dashboard Cite

In field studies of active hydrocarbon seeps the carbon isotopic composition of Rose Bengal stained benthic foraminiferal tests (δ 13 C test ) and bottom water DIC (δ 13 C DIC ) deviates from their normal marine ratios. This circumstance led to ongoing discussions on whether aerobic foraminifers like Cibicides wuellerstorfi are capable of living at seepage sites and, more importantly, if their tests reflect the low δ 13 C values of emanating methane. To evaluate the discrepancy between δ 13 C DIC and δ 13 C test , we conducted methane seepage-emulating culture experiments on undepressurized sediments from the Håkon Mosby Mud Volcano, a modern methane seepage structure that hosts living C. wuellerstorfi with distinct negative δ 13 C values. The collected sediments were cultured at a site-alike pressure and mean bottom water methane concentration using newly developed high-pressure aquaria. Over an experimental period of 5 months our novel technology enabled a successful reproduction of all calcareous deep-sea benthic foraminiferal species living at that site, notably the first C. wuellerstorfi cultured in the laboratory. To show the influence of methane on δ 13 C test , we ran parallel experiments with N 99% 12 C-and 99% 13 C-methane in the experimental "bottom water". During the experimental running time methanotrophs in the water column obviously converted the experimentally added methane source to δ 13 C-enriched and -depleted DIC, respectively. Since whole sediment cores were cultured, it was impossible to keep δ 13 C DIC constant over the 5-month duration, which is reflected in a variability of δ 13 C test in foraminiferal shells. Irrespective of that, the methane source is reflected in δ 13 C test of foraminiferal shells, and for the natural seep-conditions simulating 12 C-experiment the mean δ 13 C DIC and δ 13 C test in C. wuellerstorfi were equal. Although for future culturing experiments improvements of the experimental conditions are advisable, our first results are evidence that persistent methane emanation impacts the carbon isotopic composition of deep-sea benthic foraminifera.

show abstract

Experimental assembly of foraminiferal communities from coastal propagule banks

Cited by 63 publications

References 32 publications

Ancient DNA sheds new light on the Svalbard foraminiferal fossil record of the last millennium

Ancient DNA sheds new light on the Svalbard foraminiferal fossil record of the last millennium

The response of Nonionella iridea and other benthic foraminifera to “fresh” organic matter enrichment and physical disturbance

Novel high-pressure culture experiments on deep-sea benthic foraminifera — Evidence for methane seepage-related δ13C of Cibicides wuellerstorfi

Contact Info

Product

Resources

About