Review of Palaeobotany and Palynology最新文献_第3页

A new species of Neocalamites from the Upper Buntsandstein (Anisian) of Üdingen (Rur Eifel, Germany) 来自于Üdingen（德国Rur Eifel）上Buntsandstein（Anisian）的Neocalamites新种

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-08-10 DOI: 10.1016/j.revpalbo.2024.105173

{"title":"A new species of Neocalamites from the Upper Buntsandstein (Anisian) of Üdingen (Rur Eifel, Germany)","authors":"","doi":"10.1016/j.revpalbo.2024.105173","DOIUrl":"10.1016/j.revpalbo.2024.105173","url":null,"abstract":"<div><p>Well preserved Early-Middle Triassic plant fossils from Northwest Europe are relatively rare due to the environmental conditions within the Germanic basin during this time period. The only sphenophyte species commonly described in the floras that are found in the area, is <em>Equisetites mougeotii</em>. However, only stems without leaf sheaths were ever reported. Here, we describe sphenophyte stems with free standing leaves from the Upper Buntsandstein of Üdingen, Germany, which we attribute to the genus <em>Neocalamites</em> based on this characteristic and the difference, mainly in stem size, of the Üdingen material to <em>E. mougeotii</em>. Most of the material consists of internodal, infertile stems that are unbranched and vary in width. A few of these stems are three-dimensionally preserved. Due to the difference of the material to the other, rarely present, <em>Neocalamites</em> species reported from the Anisian of Western Europe, we propose the plant fossils from Üdingen to be a new species called <em>Neocalamites vanderburghii</em> n.sp.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0034666724001246/pdfft?md5=38816cb76e32fc7f9d09c0afd0b51d5a&pid=1-s2.0-S0034666724001246-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How many pollen grains should we count? – A basic statistical view 我们应该计算多少花粉粒？- 基本统计观点

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-08-02 DOI: 10.1016/j.revpalbo.2024.105126

{"title":"How many pollen grains should we count? – A basic statistical view","authors":"","doi":"10.1016/j.revpalbo.2024.105126","DOIUrl":"10.1016/j.revpalbo.2024.105126","url":null,"abstract":"<div><p>In pollen analysis, one question is often being asked: how many pollen grains should be counted for one sample? The proper count number should guarantee the reliability of the abundance (usually expressed as percentage) of the pollen taxa concerned in the sample. Practically, this number is usually more than 100 grains, but seldom over 1000. Most people tend to count <em>at least</em> 300 pollen grains (often of terrestrial plants)for each sample. However, this number is more likely based on the experience of earlier palynologists rather than on theoretical consideration. In this paper, we apply a simple statistical theory to evaluate the reliability of the observed pollen abundance with different total count number. The reliability is evaluated based on the error range. The results show that the reliability depends on both the true pollen abundance of the taxon concerned and the total count number: a low abundant pollen taxon needs a high count number to obtain a reliable data set. The conclusion is that there is no universal “proper” total count number for each sample. The total count number should be determined by both the abundance of the interested taxa and the research objective. The commonly used 300 grains may be good enough for most general vegetation reconstructions and for the accurate survey of pollen taxa with more than 10% abundance. For less abundant taxa, higher count numbers are suggested.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taxonomic and environmental significance of Poaceae and Cyperaceae phytoliths from the Northern Territory, Australia 澳大利亚北部地区诗歌科和桧柏科植物岩石的分类和环境意义

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-30 DOI: 10.1016/j.revpalbo.2024.105169

{"title":"Taxonomic and environmental significance of Poaceae and Cyperaceae phytoliths from the Northern Territory, Australia","authors":"","doi":"10.1016/j.revpalbo.2024.105169","DOIUrl":"10.1016/j.revpalbo.2024.105169","url":null,"abstract":"<div><p>Phytoliths are a valuable tool for reconstructing past grassy ecosystems. However, they are not commonly utilised as a palaeoecological proxy in Australia due to a lack of modern reference material from plants, particularly grasses. This study analyses phytolith reference material from 49 grass and 4 sedge species from the Northern Territory, Australia. This is used to develop a detailed classification scheme and multivariate morphospace analysis to examine taxonomic and ecological patterns of grass silica short cell phytolith (GSSCP) production within the Poaceae (grass) family. The results of detrended correspondence analysis show that grass subfamilies, tribes, and genera in this region can be differentiated through phytolith assemblages, and that these assemblages reflect the environmental conditions associated with various grass taxa. The developed detailed classification system and examination of co-occurrence patterns reduces redundancy of phytolith morphotypes across subfamilies, improving taxonomic and palaeoecological resolution of phytolith assemblages. Finally, based on the results of this study, a detailed scheme is presented for palaeoecological reconstructions in grassy ecosystems of northern Australia.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0034666724001209/pdfft?md5=d9e69aa82018411df2e678bc884a9375&pid=1-s2.0-S0034666724001209-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141949085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identifying the “unidentifiable”: The basketry plants of the Late Cycladic Akrotiri 识别 "无法识别的"：基克拉迪晚期阿克罗蒂里的篮筐植物

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-30 DOI: 10.1016/j.revpalbo.2024.105168

引用次数: 0

Taxonomic revision of in situ tree trunks and silicified wood from the Early Jurassic Kirkpatrick Basalt in the Mesa Range area, northern Victoria Land, Antarctica 南极洲维多利亚陆地北部梅萨山脉地区早侏罗世柯克帕特里克玄武岩原位树干和硅化木的分类修订

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-29 DOI: 10.1016/j.revpalbo.2024.105160

引用次数: 0

Why cysts of Alexandrium catenella and/or A. pacificum (Gonyaulacales, Dinophyceae) do not remain in sediments as fossils? 为什么亚力山大菌（Gonyaulacales）和/或太平洋亚力山大菌（A. pacificum）的孢囊不会作为化石留在沉积物中？

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-26 DOI: 10.1016/j.revpalbo.2024.105161

{"title":"Why cysts of Alexandrium catenella and/or A. pacificum (Gonyaulacales, Dinophyceae) do not remain in sediments as fossils?","authors":"","doi":"10.1016/j.revpalbo.2024.105161","DOIUrl":"10.1016/j.revpalbo.2024.105161","url":null,"abstract":"<div><p>The dinoflagellate genus <em>Alexandrium</em> contains a number of species that produce paralytic shellfish toxins and have been the focus of attention as toxic plankton for harmless algal studies. Among <em>Alexandrium</em> species, <em>A. catenella</em> and <em>A. pacificum</em> form ellipsoidal-shaped resting cysts, which are preserved in marine sediments, and have attracted attention as potential seeds for future proliferation after favorable environmental conditions <del>environmental improvement.</del> However, although these cysts are preserved in surface of marine sediments, there is no record of their occurrence from solidified sediments as fossils. In order to clarify the reason for this, we investigated the differences in the chemical composition of cyst walls between colorless cyst of <em>Alexandrium catenella/pacificum</em> and <em>Lingulodinium machaerophorum, Polysphaeridium zoharyi, Spiniferites</em> spp. by measuring the thickness of cyst walls and using Fourier Transform Infrared Spectroscopy (FTIR) and Raman Spectroscopy. The results showed that the cyst wall of <em>A. catenella/pacificum</em> and <em>L. machaerophorum</em> were all composed of cellulosic organic matter. However, <em>A. catenella/pacificum</em> have the higher percentage of α−/β-glucosidic linkages and that the thickness of their cyst walls is about one-third of that of <em>L. machaerophorum</em>. Therefore, these are reasons for the cysts of <em>A. catenella</em>/<em>pacificum</em> being more easily degraded in the sediment.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Woody plant phytolith morphology and representation in surface sediments across the Northern Territory, Australia 澳大利亚北部地区表层沉积物中的木本植物植金石形态和代表性

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-22 DOI: 10.1016/j.revpalbo.2024.105158

{"title":"Woody plant phytolith morphology and representation in surface sediments across the Northern Territory, Australia","authors":"","doi":"10.1016/j.revpalbo.2024.105158","DOIUrl":"10.1016/j.revpalbo.2024.105158","url":null,"abstract":"<div><p>Phytoliths are a good tool for investigating vegetation change in northern Australia. However, there is a lack of phytolith reference material across the Australian continent, particularly for woody plants. The development of reference material from woody plants is critical to understand regional patterns of phytolith production and preservation. This study analyses phytolith material from 40 woody plants to examine morphological and anatomical variation in phytolith production among Australian plant families. This is paired with phytolith assemblages from nine surface sediment samples to assess the representation and preservation of woody plant phytolith morphotypes. All woody plant species examined produce identifiable phytolith morphotypes, but most morphotypes cannot be differentiated between woody eudicots, monocots, and conifers. However, some woody plant morphotypes do have good potential for taxonomic or anatomical discrimination of plant groups. The analysis of surface sediment phytolith assemblages reveals that not all woody plant morphotypes preserve equally in surface sediments, potentially restricting their ability for taxonomic discrimination. Finally, the relevance of phytolith morphotypes for palaeoecological reconstruction is discussed.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S003466672400109X/pdfft?md5=23496818127b0e2c7d73a9d73d0ecdde&pid=1-s2.0-S003466672400109X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141843057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spores from the K–Pg boundary of the La Colonia Formation, Patagonia, Argentina 阿根廷巴塔哥尼亚拉科洛尼亚地层 K-Pg 边界的孢子

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-19 DOI: 10.1016/j.revpalbo.2024.105159

{"title":"Spores from the K–Pg boundary of the La Colonia Formation, Patagonia, Argentina","authors":"","doi":"10.1016/j.revpalbo.2024.105159","DOIUrl":"10.1016/j.revpalbo.2024.105159","url":null,"abstract":"<div><p>A palynological study was carried out based on 157 samples collected from four representative stratigraphic sections of the Maastrichtian-Danian deposits of the La Colonia Formation outcropping in northern Chubut Province, Patagonia, Argentina. About 240 palynomorphs were recognized. Plant communities were dominated in terms of richness by ferns and angiosperms, but algae and gymnosperms are also well-represented. In this contribution, we present the systematic study of bryophyte, lycophyte, and fern spores. Bryophytes comprise eight species (10% of spore diversity), including representatives of Marchantiophyta, Bryophyta, and Anthocerotophyta. Lycophytes encompass 15 species (20% of spore diversity) and are represented by the families Lycopodiaceae and Selaginellaceae. Ferns comprise 53 species (70% of spore diversity), including members of Anemiaceae, Dicksoniaceae, Dipteridaceae, Gleicheniaceae, Lygodiaceae, Marsileaceae, Matoniaceae, Osmundaceae, Polypodiaceae, Salviniaceae, and Schizaeaceae, among others of uncertain affinities. Four new species are erected: a lycophyte (<em>Neoraistrickia loconiensis</em> sp. nov.), a salvinialean (<em>Thecaspora polygonalis</em> sp. nov.), and two fern species of unknown affinities (<em>Clavatosporis varians</em> sp. nov. and <em>Microreticulatisporites patagonicus</em> sp. nov.). The recorded palynoflora reinforces previous environmental interpretation of the La Colonia deposits as coastal plains bathed by shallow seas and barrier island/lagoon complexes and the presence of freshwater bodies where aquatic plant communities developed. The vegetational history of the bryophytes, lycophytes, and ferns in the studied sections of the La Colonia Formation indicates the lack of a significant floristic change across the K–Pg interval at the local scale.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nuskoisporites dulhuntyi from the Cisuralian and Lopingian of the Southern Alps: A morphological comparison between dispersed and in situ prepollen 南阿尔卑斯山西苏拉山期和洛平山期的 Nuskoisporites dulhuntyi：分散和原位预花粉的形态比较

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-16 DOI: 10.1016/j.revpalbo.2024.105157

{"title":"Nuskoisporites dulhuntyi from the Cisuralian and Lopingian of the Southern Alps: A morphological comparison between dispersed and in situ prepollen","authors":"","doi":"10.1016/j.revpalbo.2024.105157","DOIUrl":"10.1016/j.revpalbo.2024.105157","url":null,"abstract":"<div><p><em>Nuskoisporites dulhuntyi</em> is considered one of the biostratigraphic marker species for the Lopingian of Europe. A morphological comparison between Kungurian (Cisuralian) and Wuchiapingian (Lopingian) <em>Nuskoisporites dulhuntyi</em> prepollen (dispersed from five outcrops and in situ from one cone) from the Southern Alps has been carried out. Dispersed <em>Nuskoisporites dulhuntyi</em> prepollen grains from the Kungurian (Cisuralian) of the Athesian Volcanic District (AVD) and the Wuchiapingian (Lopingian) of Bletterbach have been compared with the in situ prepollen grains isolated from an <em>Ortiseia</em> cone of the Bletterbach outcrop. Using light microscopy, we measured overall size, central body size, and laesurae length of the prepollen grains revealing significant overlaps in morphological characteristics between the different assemblages. The main difference is the bigger size of the in situ pollen grains in comparison with the dispersed ones, but a significant overlap is still observed. This implies that the prepollen grains from the Kungurian sedimentary successions of the Athesian Volcanic District can be assigned confidentially to the dispersed prepollen species <em>Nuskoisporites dulhuntyi</em> and hence, represent the so far oldest record of this taxon, extending the species range from the Guadalupian back to the late Cisuralian.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0034666724001088/pdfft?md5=9279166336664bd9b3bbae18a1af0a0a&pid=1-s2.0-S0034666724001088-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141715753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new approach to counting fossil and modern pollen grains: The orderly count 计算化石和现代花粉粒的新方法：有序计数

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-07-06 DOI: 10.1016/j.revpalbo.2024.105156

Tutku Tuncalı Yaman , Bikem Ekberzade , Hülya Caner , Ruya Y. Dagdeviren , Sena Inkaya , Nurgul K. Kılıc , Suzanne A.G. Leroy , Fabienne Marret , Cetin Senkul , Jessie Woodbridge , Meral Avci

{"title":"A new approach to counting fossil and modern pollen grains: The orderly count","authors":"Tutku Tuncalı Yaman , Bikem Ekberzade , Hülya Caner , Ruya Y. Dagdeviren , Sena Inkaya , Nurgul K. Kılıc , Suzanne A.G. Leroy , Fabienne Marret , Cetin Senkul , Jessie Woodbridge , Meral Avci","doi":"10.1016/j.revpalbo.2024.105156","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105156","url":null,"abstract":"<div><p>Palynology, the study of pollen and spores, plays a crucial role in various scientific disciplines, including earth sciences (paleovegetation and paleoclimatology), botany, allergy, archaeology, forensic sciencs and cosmetics. This study delves into the critical question in fossil pollen analysis studies: the minimum count of pollen grains required for accurate estimation of vegetation composition. Various statistical methods have been proposed over the years to address this question. Our research introduces an alternative technique, the orderly count, tailored to the nature of palynological analysis. We apply this method to diverse sediment catchments, including peat bogs, marine and lake sediments, from different geographical locations. Additionally, we revisit the reliability coefficients and propose adjustments for more accurate results. Our findings suggest that relying on statistical methods without considering the specific characteristics of palynological data may lead to low reliability. We advocate for the integration of dissimilarity criteria and the orderly count in sample size assessments for enhanced accuracy in palynological analyses. Our study emphasizes the importance of choosing appropriate methodologies aligned with the unique aspects of palynology to ensure robust and reliable results.</p></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141607401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0