Schmidt, Alexander R.

[["dc.bibliographiccitation.firstpage","305"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Systematics and Evolution"],["dc.bibliographiccitation.lastpage","328"],["dc.bibliographiccitation.volume","57"],["dc.contributor.author","Sadowski, Eva-Maria"],["dc.contributor.author","Seyfullah, Leyla J."],["dc.contributor.author","Regalado, Ledis"],["dc.contributor.author","Skadell, Laura E."],["dc.contributor.author","Gehler, Alexander"],["dc.contributor.author","Gröhn, Carsten"],["dc.contributor.author","Hoffeins, Christel"],["dc.contributor.author","Hoffeins, Hans Werner"],["dc.contributor.author","Neumann, Christian"],["dc.contributor.author","Schneider, Harald"],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2019-11-12T14:25:14Z"],["dc.date.available","2019-11-12T14:25:14Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1111/jse.12501"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62605"],["dc.language.iso","en"],["dc.relation.issn","1674-4918"],["dc.relation.issn","1759-6831"],["dc.title","How diverse were ferns in the Baltic amber forest?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","183"],["dc.bibliographiccitation.journal","Review of Palaeobotany and Palynology"],["dc.bibliographiccitation.lastpage","193"],["dc.bibliographiccitation.volume","219"],["dc.contributor.author","Kettunen, Elina"],["dc.contributor.author","Grabenhorst, Heinrich"],["dc.contributor.author","Gröhn, Carsten"],["dc.contributor.author","Dörfelt, Heinrich"],["dc.contributor.author","Sadowski, Eva-Maria"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2018-11-07T09:54:15Z"],["dc.date.available","2018-11-07T09:54:15Z"],["dc.date.issued","2015"],["dc.description.abstract","About 130 years ago Robert Caspary described fossil fungi resembling the extant anamorphic genus Torula Persoon (Ascomycota,Pezizomycotina) from two pieces of Eocene Baltic amber. Despite being among the earliest fungi recognized from amber, these microfossils have received virtually no attention for the past 100 years. Our recent findings of similar fungal inclusions from Baltic and Bitterfeld amber have revealed that these fungi constituted an abundant, but poorly understood component of these Paleogene amber forests. Here we elucidate the morphology and growth mode of these enigmatic fungi and show that they are clearly distinguished from the moniliform hyphae of capnodialean sooty moulds (Ascomycota, Capnodiales), that they also do not correspond with the extant genus Torula, and cannot with confidence be assigned to any extant genus of dematiaceous hyphomycetes. The life cycle of the fungi involved transitions from vegetative hyphae to conidial states producing non-randomly disarticulating chains of multi-cellular phragmoconidia. We provide an emended description of these fungi and suggest a new fossil genus Casparyotorula that comprises three anamorphic species, Casparyotorula globulifera (Caspary) comb. nov., Casparyotoruia heteromorpha (Caspary) comb. nov., and Caspcnyotorula arnoldii sp. nov. (C) 2015 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.revpalbo.2015.03.010"],["dc.identifier.isi","000357352000012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36497"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","Najko"],["dc.relation.issn","1879-0615"],["dc.relation.issn","0034-6667"],["dc.title","The enigmatic hyphomycete Torula sensu Caspary revisited"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","203"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Earth and Planetary Science Letters"],["dc.bibliographiccitation.lastpage","213"],["dc.bibliographiccitation.volume","273"],["dc.contributor.author","Schmidt, Alexander"],["dc.contributor.author","Weyer, Stefan"],["dc.contributor.author","Mezger, Klaus"],["dc.contributor.author","Scherer, Erik E."],["dc.contributor.author","Xiao, Yilin"],["dc.contributor.author","Hoefs, Jochen"],["dc.contributor.author","Brey, Gerhard P."],["dc.date.accessioned","2018-11-07T11:11:59Z"],["dc.date.available","2018-11-07T11:11:59Z"],["dc.date.issued","2008"],["dc.description.abstract","The Qinling-Dabie-Sulu orogenic belt in eastern China is one of the largest ultrahigh-pressure (UHP) terranes worldwide. Mineral Sm-Nd- and zircon U-Pb dating has been widely used to reveal the metamorphic history of this collisional orogen. However, the exact timing of the UHP metamorphic event(s) remains controversial and ages ranging from 245 Ma to 220 Ma have been suggested. We present high precision garnet-cpx Lu-Hf ages for six eclogites from the Dabie and Sulu areas. All ages fall in a narrow range between 219.6 and 224.4 Ma. Five samples define a mean age of 223.0 +/- 0.9 Ma and one sample yields a slightly younger age of 219.6 +/- 1.4 Ma. This very tight age range is particularly remarkable considering the large regional distribution of sample localities (on the order of 100 km at the time of UHP metamorphism) and the wide variety of garnet and eclogite chemical compositions represented. Two samples yield Sm-Nd ages that are indistinguishable from their Lu-Hf ages, albeit with larger uncertainties. The identical ages of eclogites from both the Dabie and the Sulu region emphasize their close genetic relationship and similar metamorphic histories. The Lu-Hf results appear to date a punctuated event of garnet growth. Alternatively, the Lu-Hf garnet ages may represent the onset of rapid, contemporaneous uplift and subsequent cooling. However, trace element zoning of Lu and Hf is still preserved in garnet porphyroblasts, even in those with a homogeneous major element distribution. Thus, complete reequilibration of the Lu-Hf system during peak-temperature conditions probably did not occur. The garnet forming event can be placed toward the final stage of the UHP metamorphism, in agreement with some published U-Pb zircon ages. A possible trigger for this short-lived and widespread mineral growth episode may have been a fluid that became available at that stage of the metamorphic history. Although HREE-depleted patterns of older zircon grains may indicate the presence of an older generation of garnet, complete eclogitisation may have been inhibited during the major part of the prograde P-T path due to dry conditions during most of the UHP metamorphism. The uniform Lu-Hf (and Sm-Nd) ages of all investigated Dabie and Sulu eclogites suggest that garnet growth and thus possibly fluid availability were limited to a short time interval over a remarkably large regional scale. (C) 2008 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG) [WE 2850-2/1]"],["dc.identifier.doi","10.1016/j.epsl.2008.06.036"],["dc.identifier.isi","000259729000020"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11244"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53559"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1385-013X"],["dc.relation.issn","0012-821X"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY-NC-ND 3.0"],["dc.rights.uri","http://creativecommons.org/licenses/by-nc-nd/3.0/"],["dc.title","Rapid eclogitisation of the Dabie-Sulu UHP terrane: Constraints from Lu-Hf garnet geochronology"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Grimaldi, David A."],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2020-12-10T18:11:11Z"],["dc.date.available","2020-12-10T18:11:11Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1038/s41598-019-55622-9"],["dc.identifier.eissn","2045-2322"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17051"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73914"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Morphological stasis in the first myxomycete from the Mesozoic, and the likely role of cryptobiosis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","64"],["dc.bibliographiccitation.journal","Cretaceous Research"],["dc.bibliographiccitation.lastpage","72"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Saint Martin, Simona"],["dc.contributor.author","Saint Martin, Jean-Paul"],["dc.contributor.author","Schmidt, Alexander R."],["dc.contributor.author","Girard, Vincent"],["dc.contributor.author","Néraudeau, Didier"],["dc.contributor.author","Perrichot, Vincent"],["dc.date.accessioned","2018-11-07T10:03:55Z"],["dc.date.available","2018-11-07T10:03:55Z"],["dc.date.issued","2015"],["dc.description.abstract","Corethron Castracane is a marine planktonic diatom genus that is widespread in cold-water assemblages at the present day. Its fossil record was known previously to range from the middle Eocene to the Holocene. Here, we report the earliest occurrence of Corethron in Late Cretaceous (Cenomanian to Santonian) amber from Vendee, northwestern France, thus extending the first appearance datum by about 40-55 million years and supporting the molecular phylogenetic estimates proposed for the origin of this lineage. The presence of Corethron in amber is a special case of biostratinomy where a marine taxon is incorporated into the liquid resin produced by trees, implying that the Vendean amber forest grew in a nearshore environment where wind, sea-spray, or high tide introduced the marine diatom frustules into the terrestrial realm. (C) 2014 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.cretres.2014.07.006"],["dc.identifier.isi","000347666300004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38581"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","Najko"],["dc.relation.issn","1095-998X"],["dc.relation.issn","0195-6671"],["dc.title","The intriguing marine diatom genus Corethron in Late Cretaceous amber from Vendee (France)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","S0195667121002354"],["dc.bibliographiccitation.firstpage","104987"],["dc.bibliographiccitation.journal","Cretaceous Research"],["dc.bibliographiccitation.volume","128"],["dc.contributor.author","Feldberg, Kathrin"],["dc.contributor.author","Schäfer-Verwimp, Alfons"],["dc.contributor.author","Renner, Matt A.M."],["dc.contributor.author","von Konrat, Matt"],["dc.contributor.author","Bechteler, Julia"],["dc.contributor.author","Müller, Patrick"],["dc.contributor.author","Wang, Yong-Dong"],["dc.contributor.author","Schneider, Harald"],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2021-12-01T09:23:33Z"],["dc.date.available","2021-12-01T09:23:33Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1016/j.cretres.2021.104987"],["dc.identifier.pii","S0195667121002354"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94684"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.issn","0195-6671"],["dc.title","Liverworts from Cretaceous amber"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","144"],["dc.bibliographiccitation.journal","Review of Palaeobotany and Palynology"],["dc.bibliographiccitation.lastpage","150"],["dc.bibliographiccitation.volume","238"],["dc.contributor.author","Lee, Gaik Ee"],["dc.contributor.author","Kolberg, Laura"],["dc.contributor.author","Bechteler, Julia"],["dc.contributor.author","Schäfer-Verwimp, Alfons"],["dc.contributor.author","Renner, Matthew A. M."],["dc.contributor.author","Schmidt, Alexander R."],["dc.contributor.author","Heinrichs, Jochen"],["dc.date.accessioned","2018-11-07T10:26:20Z"],["dc.date.available","2018-11-07T10:26:20Z"],["dc.date.issued","2017"],["dc.description.abstract","Lejeunea is a morphologically diverse subcosmopolitan genus of predominantly epiphytic leafy liverworts. We describe three Lejeunea fossils preserved in Miocene Dominican amber, Lejeunea hamatiloba sp. nov., L. resinata sp. nov. and L urbanioides sp. nov., thereby increasing the Lejeunea fossil record to four species. The overall similarity of the fossils and extant species suggests the conservation of the generic composition of Caribbean epiphyte communities since the early Miocene, a pattern that was also confirmed for mosses and ferns. (C) 2016 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","German Research Foundation [HE 3584/6]; Humboldt Foundation"],["dc.identifier.doi","10.1016/j.revpalbo.2016.11.013"],["dc.identifier.isi","000399622900010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43021"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1879-0615"],["dc.relation.issn","0034-6667"],["dc.title","The leafy liverwort genus Lejeunea (Porellales, Jungermanniopsida) in Miocene Dominican amber"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","161"],["dc.bibliographiccitation.journal","Review of Palaeobotany and Palynology"],["dc.bibliographiccitation.lastpage","168"],["dc.bibliographiccitation.volume","233"],["dc.contributor.author","Sadowski, Eva-Maria"],["dc.contributor.author","Schmidt, Alexander R."],["dc.contributor.author","Rudall, Paula J."],["dc.contributor.author","Simpson, David A."],["dc.contributor.author","Gröhn, Carsten"],["dc.contributor.author","Wunderlich, Jörg"],["dc.contributor.author","Seyfullah, Leyla J."],["dc.date.accessioned","2018-11-07T10:07:58Z"],["dc.date.available","2018-11-07T10:07:58Z"],["dc.date.issued","2016"],["dc.description.abstract","We report the first bona fide graminid spikelet inclusions found in Eocene Baltic amber. The most informative anatomically preserved specimen is assigned to the genus Rhynchospora Vahl (Cyperaceae), whereas two others show affinities with sedges (Cyperaceae) or grasses (Poaceae). Examination of historic descriptions of putative graminid inclusions from Baltic amber suggests that one is of coniferous origin, while the affinities of the other fragmentary specimens remain uncertain as they have been lost. The graminid inclusions described here challenge previous notions of the Baltic amber source area being a dark, close canopy forest and rather indicate at least some open and light habitats with swampy and wet areas within the 'Baltic amber forest', and thus enlighten its hitherto obscure palaeoenvironment and floristic composition. (C) 2016 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.revpalbo.2016.02.005"],["dc.identifier.isi","000384869800013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39384"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","Najko"],["dc.relation.issn","1879-0615"],["dc.relation.issn","0034-6667"],["dc.title","Graminids from Eocene Baltic amber"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","387"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","New Zealand Journal of Botany"],["dc.bibliographiccitation.lastpage","406"],["dc.bibliographiccitation.volume","55"],["dc.contributor.author","Beimforde, Christina"],["dc.contributor.author","Tuovila, Hanna"],["dc.contributor.author","Schmidt, Alexander R."],["dc.contributor.author","Lee, William G."],["dc.contributor.author","Gube, Matthias"],["dc.contributor.author","Rikkinen, Jouko"],["dc.date.accessioned","2020-12-10T18:14:43Z"],["dc.date.available","2020-12-10T18:14:43Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1080/0028825X.2017.1360368"],["dc.identifier.eissn","1175-8643"],["dc.identifier.issn","0028-825X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74593"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Chaenothecopsis schefflerae (Ascomycota: Mycocaliciales): a widespread fungus on semi-hardened exudates of endemic New Zealand Araliaceae"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","495"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Arthropod-Plant Interactions"],["dc.bibliographiccitation.lastpage","505"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Beimforde, Christina"],["dc.contributor.author","Seyfullah, Leyla J."],["dc.contributor.author","Perrichot, Vincent"],["dc.contributor.author","Schmidt, Kerstin"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2018-06-28T09:23:49Z"],["dc.date.available","2018-06-28T09:23:49Z"],["dc.date.issued","2016"],["dc.description.abstract","Conifers of the endemic species Araucaria humboldtensis on Mont Humboldt in New Caledonia exhibit extensive resin exudation. The resin flows of these threatened trees are here shown to be induced by two beetle species, which bore into branches and branchlets, leading to abundant outpouring of resin, which gradually solidifies into often drop-shaped resin bodies. The exudate is colonized by a resinicolous and likely insect-vectored ascomycete, Resinogalea humboldtensis, which is only known from Mont Humboldt. The fungus grows into fresh resin and eventually develops ascomata on the surface of solidifying resin. The solidified resin is also colonized by another fungus, a dematiaceous hyphomycete. Based on protein coding (CO1, CAD, ArgK) and ribosomal (LSU) genes, the larger branch-boring beetle is a weevil of the tribe Araucariini, which represents the sister group of all other cossonine weevils. The smaller beetle species belongs to the longhorn beetles (Cerambycidae). The strong host specificity of the Araucariini, along with the occurrence of two unique fungi, suggests that the resin-associated community is native and has evolved on the endemic conifer host. The formation of large amber deposits indicates massive resin production in the past, but the environmental triggers of exudation in Mesozoic and Cenozoic ecosystems remain unclear. Our observations from Mont Humboldt support the notion that the occurrences of small drop-shaped amber pieces in Triassic to Miocene amber deposits were linked to ancient insect infestations."],["dc.identifier.doi","10.1007/s11829-016-9475-3"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15156"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Resin exudation and resinicolous communities on Araucaria humboldtensis in New Caledonia"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]