Review of Palaeobotany and Palynology最新文献_第2页

Phytolith-based vegetational reconstruction from Jumping Grass Marsh, Minjerribah, in the Australian subtropics 澳洲亚热带Minjerribah跳草沼泽植岩植被重建

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2026-01-02 DOI: 10.1016/j.revpalbo.2026.105500

Manoshi Hazra , Alison Crowther , Patrick Moss , John Tibby , Francesca McInerney , Sangbaran Ghoshmaulik , Melodina Fabillo , Khairun Nisha Bte Mohamed Ramdzan , Kevin Welsh

Phytoliths are a valuable tool for reconstructing localized past vegetation, particularly in Restionaceae rich peatlands of subtropical Australia. Despite the significance of subtropical Australia for understanding vegetation–climate dynamics during the Last Glacial Maximum (LGM), no continuous phytolith records have previously been reported from subtropical eastern Australia. Jumping Grass Marsh, located on Minjerribah (North Stradbroke Island), preserves a 2.5 m organic-rich sequence extending from 27 ka BP to the present. This study reconstructs long-term vegetation dynamics using the phytolith record and evaluates how wetland taxa, grasses, and fire responded to past environmental changes in the subtropics. Phytoliths were extracted at 10 cm intervals, with 22 morphotypes identified and classified following ICPN 2.0 standards. A modern reference collection from wetland plants and soils supported taxonomic attribution, while complementary evidence from microcharcoal, sediment organic matter, and particle-size analysis refined palaeoenvironmental interpretation. The phytolith record demonstrates long-term persistence of restiad wetlands from the early glacial period (> 22 ka) to the present, with Restionaceae morphotypes dominating throughout. Grass abundance increased during the Last Glacial Maximum and reached its peak in the deglacial phase (∼ 15.7 ka). Enhanced moisture availability in the Holocene (∼ 12–0 ka) supported the expansion of Cyperaceae-specific morphotypes. Microcharcoal and discolored phytoliths suggest fire episodes around ∼ 14.4 ka and ∼ 3.3 ka. Diatom evidence (Pinnularia sp.) indicates acidic wetland conditions in the early Holocene. Modern soils show increased Panicoideae morphotypes, reflecting natural inputs and introduced grasses. Phytoliths robustly reflect vegetation history and enhance multi-proxy reconstructions of subtropical wetlands.

植物岩是重建局部过去植被的有价值的工具，特别是在澳大利亚亚热带富含retionaceae的泥炭地。尽管澳大利亚亚热带对了解末次盛冰期植被-气候动态具有重要意义，但澳大利亚东部亚热带地区没有连续的植物岩记录。跳跃草沼泽位于Minjerribah（北Stradbroke岛），保存了从27ka BP到现在的2.5米富含有机物的序列。本研究利用植物岩记录重建了长期植被动态，并评估了亚热带湿地分类群、草和火对过去环境变化的响应。每隔10 cm提取植岩，鉴定出22种形态，并按照ICPN 2.0标准进行分类。来自湿地植物和土壤的现代参考资料支持了分类归属，而来自微炭、沉积物有机质和粒度分析的补充证据完善了古环境解释。植物岩记录表明，从早期冰川期（> 22ka）到现在，休止湿地长期持续存在，并以休止科形态类型占主导地位。末次盛冰期草丰度增加，在去冰期（~ 15.7 ka）达到顶峰。全新世（~ 12-0 ka）水分有效性的增强支持了苏科特有形态的扩展。微炭和变色的植物岩表明大约在~ 14.4 ka和~ 3.3 ka发生过火灾。硅藻证据（Pinnularia sp.）表明全新世早期的酸性湿地环境。现代土壤禾本科形态类型增加，反映了自然输入和引进的禾本科。植物岩能较好地反映亚热带湿地的植被历史，增强了亚热带湿地的多代理重建。

{"title":"Phytolith-based vegetational reconstruction from Jumping Grass Marsh, Minjerribah, in the Australian subtropics","authors":"Manoshi Hazra , Alison Crowther , Patrick Moss , John Tibby , Francesca McInerney , Sangbaran Ghoshmaulik , Melodina Fabillo , Khairun Nisha Bte Mohamed Ramdzan , Kevin Welsh","doi":"10.1016/j.revpalbo.2026.105500","DOIUrl":"10.1016/j.revpalbo.2026.105500","url":null,"abstract":"<div><div>Phytoliths are a valuable tool for reconstructing localized past vegetation, particularly in Restionaceae rich peatlands of subtropical Australia. Despite the significance of subtropical Australia for understanding vegetation–climate dynamics during the Last Glacial Maximum (LGM), no continuous phytolith records have previously been reported from subtropical eastern Australia. Jumping Grass Marsh, located on Minjerribah (North Stradbroke Island), preserves a 2.5 m organic-rich sequence extending from 27 ka BP to the present. This study reconstructs long-term vegetation dynamics using the phytolith record and evaluates how wetland taxa, grasses, and fire responded to past environmental changes in the subtropics. Phytoliths were extracted at 10 cm intervals, with 22 morphotypes identified and classified following ICPN 2.0 standards. A modern reference collection from wetland plants and soils supported taxonomic attribution, while complementary evidence from microcharcoal, sediment organic matter, and particle-size analysis refined palaeoenvironmental interpretation. The phytolith record demonstrates long-term persistence of restiad wetlands from the early glacial period (>22 ka) to the present, with Restionaceae morphotypes dominating throughout. Grass abundance increased during the Last Glacial Maximum and reached its peak in the deglacial phase (∼15.7 ka). Enhanced moisture availability in the Holocene (∼12–0 ka) supported the expansion of Cyperaceae-specific morphotypes. Microcharcoal and discolored phytoliths suggest fire episodes around ∼14.4 ka and ∼ 3.3 ka. Diatom evidence (<em>Pinnularia</em> sp.) indicates acidic wetland conditions in the early Holocene. Modern soils show increased Panicoideae morphotypes, reflecting natural inputs and introduced grasses. Phytoliths robustly reflect vegetation history and enhance multi-proxy reconstructions of subtropical wetlands.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"347 ","pages":"Article 105500"},"PeriodicalIF":1.7,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145908708","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

An exceptional plant mesofossil assemblage from the Kungurian (early Permian) locality of Gorl (Southern Alps, northern Italy) 来自Gorl（南阿尔卑斯山，意大利北部）Kungurian（早二叠世）地区的一个特殊的植物中化石组合

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2026-01-02 DOI: 10.1016/j.revpalbo.2026.105499

Matias Delfosse-Allain , Roberta Branz , Iván R. Barreiro , Evelyn Kustatscher

Plant meso-fossils are crucial in paleobotanical studies, including taxonomy, paleoecology and plant–animal interactions. However, Cisuralian (early Permian) plant meso-remains such as dispersed cuticles, wood fragments and pollen aggregate, are extremely rare. One exceptional outcrop yielding late Kungurian plant mesofossils is Gorl in the Athesian Volcanic District (Northern Italy). Dispersed cuticles confirm the presence of Peltaspermales and describe the cuticle of conifer shoots previously assigned to Hermitia and ten new cuticle morphotypes. Five of these belong to conifers, one belongs to the Peltaspermales, whereas the botanical affinity of the other four remains uncertain. Dispersed cuticles yielded also traces of plant–animal interactions of the piercing and sucking type. A megaspore confirms the presence of lycophytes in the flora. Two types of pollen aggregates yielded Protohaploxypinus-type pollen. Statistical analysis on the epidermal pattern of the leaves of Conifer morphotype 3 and Dwarf shoot type 1 demonstrates that these two taxa belong to the same biological species. The mesofossils integrate the macro- and micro-fossil record increasing the diversity on this late Kungurian site.

植物中化石在古植物学研究中具有重要意义，包括分类学、古生态学和动植物相互作用。然而，早二叠世的植物中遗遗存如分散的角质层、木屑和花粉聚集体等极为罕见。在亚齐斯火山区（意大利北部）的Gorl是一个例外的产出昆古里晚期植物中化石的露头。分散的角质层证实了peltasper雄性的存在，并描述了先前归属于Hermitia的针叶树芽的角质层和十种新的角质层形态。其中五种属于针叶树，一种属于Peltaspermales，而其他四种的植物亲和性仍不确定。分散的角质层也发现了刺穿和吮吸类型的植物与动物相互作用的痕迹。大孢子证实了植物区系中存在石松植物。两种类型的花粉聚集体产生原haploxypinus型花粉。对3型针叶和1型矮枝叶片表皮形态的统计分析表明，这两个类群属于同一生物种。中化石整合了宏观和微观化石记录，增加了昆古里晚期遗址的多样性。

{"title":"An exceptional plant mesofossil assemblage from the Kungurian (early Permian) locality of Gorl (Southern Alps, northern Italy)","authors":"Matias Delfosse-Allain , Roberta Branz , Iván R. Barreiro , Evelyn Kustatscher","doi":"10.1016/j.revpalbo.2026.105499","DOIUrl":"10.1016/j.revpalbo.2026.105499","url":null,"abstract":"<div><div>Plant meso-fossils are crucial in paleobotanical studies, including taxonomy, paleoecology and plant–animal interactions. However, Cisuralian (early Permian) plant meso-remains such as dispersed cuticles, wood fragments and pollen aggregate, are extremely rare. One exceptional outcrop yielding late Kungurian plant mesofossils is Gorl in the Athesian Volcanic District (Northern Italy). Dispersed cuticles confirm the presence of Peltaspermales and describe the cuticle of conifer shoots previously assigned to <em>Hermitia</em> and ten new cuticle morphotypes. Five of these belong to conifers, one belongs to the Peltaspermales, whereas the botanical affinity of the other four remains uncertain. Dispersed cuticles yielded also traces of plant–animal interactions of the piercing and sucking type. A megaspore confirms the presence of lycophytes in the flora. Two types of pollen aggregates yielded <em>Protohaploxypinus</em>-type pollen. Statistical analysis on the epidermal pattern of the leaves of Conifer morphotype 3 and Dwarf shoot type 1 demonstrates that these two taxa belong to the same biological species. The mesofossils integrate the macro- and micro-fossil record increasing the diversity on this late Kungurian site.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"347 ","pages":"Article 105499"},"PeriodicalIF":1.7,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928784","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

Unlocking the architecture of ancient charophyte fructifications: The utricle of Sycidium from the Upper Devonian of Armenia 解锁古代蕨类植物果实的结构：来自亚美尼亚上泥盆世的Sycidium的胞囊

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-22 DOI: 10.1016/j.revpalbo.2025.105498

Carles Martín-Closas , Vahram Serobyan , Nune Avagyan , Gayane Grigoryan , Armine Khacahtryan , Olev Vinn , Taniel Danelian

Sycidium is one of the most emblematic charophyte genera of the Palaeozoic, characterised by its peculiar morphology, temporally persistent fossil record and cosmopolitan distribution. In this study, we present novel insights into the bilateral symmetry of the utricle, based on a previously overlooked character observed in a well-preserved assemblage of Sycidium cf. spinuliferum from the Upper Devonian of Armenia. Notably, a distinct cell wall gap is present between adjacent polygonal cells within a row, facilitating intercellular connectivity and suggesting that these rows functioned as a cohesive structural unit. This configuration supports a revised symmetry model for the utricle, expressed as (2-1-3-1-2) × 2, where the numbers denote groups of cell rows interconnected via wall gaps. The Armenian material further shows that the presumed oospore was directly enclosed within the utricle, lacking a gyrogonite. Small canals in the poles of polygonal cells may have enabled limited exchange between the egg cell and the external environment through the thick utricle wall. The prominent central canal is interpreted as the last repository of the cytoplasm during the final stages of a centripetal calcification. Additionally, this study documents a previously unrecognised mode of calcification in charophytes characterised by a spongy microstructure. These findings collectively reinforce the hypothesis that Sycidium represents an independent evolutionary lineage within the Charophyta.

枸杞属是古生代最具代表性的蕨类植物属之一，具有独特的形态、时间上持久的化石记录和世界性的分布。在这项研究中，我们提出了新的见解，对双侧对称性的胞室，基于一个以前被忽视的特征，观察到保存完好的Sycidium c.s spinuliferum来自上泥盆世亚美尼亚。值得注意的是，一行内相邻的多边形细胞之间存在明显的细胞壁间隙，促进了细胞间的连通性，并表明这些行作为一个内聚的结构单元发挥作用。这种结构支持修改后的胞室对称模型，表示为（2-1-3-1-2）× 2，其中数字表示通过壁间隙相互连接的细胞行组。亚美尼亚材料进一步表明，假定的卵孢子直接被包裹在胞室内，没有螺纹石。多角形细胞两极的小通道可能使卵细胞和外部环境之间通过厚的胞壁进行有限的交换。在向心钙化的最后阶段，突出的中央管被解释为细胞质的最后储存库。此外，本研究记录了一种以前未被认识到的钙化模式，其特征是海绵状微观结构。这些发现共同加强了一种假设，即水合子代表了一种独立的进化谱系。

{"title":"Unlocking the architecture of ancient charophyte fructifications: The utricle of Sycidium from the Upper Devonian of Armenia","authors":"Carles Martín-Closas , Vahram Serobyan , Nune Avagyan , Gayane Grigoryan , Armine Khacahtryan , Olev Vinn , Taniel Danelian","doi":"10.1016/j.revpalbo.2025.105498","DOIUrl":"10.1016/j.revpalbo.2025.105498","url":null,"abstract":"<div><div><em>Sycidium</em> is one of the most emblematic charophyte genera of the Palaeozoic, characterised by its peculiar morphology, temporally persistent fossil record and cosmopolitan distribution. In this study, we present novel insights into the bilateral symmetry of the utricle, based on a previously overlooked character observed in a well-preserved assemblage of <em>Sycidium</em> cf. <em>spinuliferum</em> from the Upper Devonian of Armenia. Notably, a distinct cell wall gap is present between adjacent polygonal cells within a row, facilitating intercellular connectivity and suggesting that these rows functioned as a cohesive structural unit. This configuration supports a revised symmetry model for the utricle, expressed as (2-1-3-1-2) × 2, where the numbers denote groups of cell rows interconnected via wall gaps. The Armenian material further shows that the presumed oospore was directly enclosed within the utricle, lacking a gyrogonite. Small canals in the poles of polygonal cells may have enabled limited exchange between the egg cell and the external environment through the thick utricle wall. The prominent central canal is interpreted as the last repository of the cytoplasm during the final stages of a centripetal calcification. Additionally, this study documents a previously unrecognised mode of calcification in charophytes characterised by a spongy microstructure. These findings collectively reinforce the hypothesis that <em>Sycidium</em> represents an independent evolutionary lineage within the Charophyta.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"346 ","pages":"Article 105498"},"PeriodicalIF":1.7,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840097","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

A voltzialean strobilus with in situ pollen from the Early Triassic of Tunguska Basin (Russia, Siberia) 俄罗斯西伯利亚通古斯盆地早三叠世volzialean strobilus的原位花粉

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-17 DOI: 10.1016/j.revpalbo.2025.105497

Eugeny Karasev , Tatiana Foraponova , Natalia Zavialova

A new species of voltzialean male strobili Willsiostrobus, W. mogitchevii sp. nov., is described from the Early Triassic Bugarikta Formation of the Tunguska Basin, Russia. The morphology of the strobilus and distal lamina is evaluated in reflected light and with help of computer microtomography. In situ pollen grains are studied with help of transmitted light and fluorescence microscopy, and scanning and transmission electron microscopy. The bisaccate pollen grains are assignable to Illinites-type, with the sacci showing an intermediate ultrastructure between proto- and eusacci. The new species is most similar to W. willsii (Townrow) Grauvogel-Stamm et Schaarschmidt from the Triassic of West Europe. Unlike Euramerica, Voltziales are rarely reported from the Triassic of Angaraland, and the finds are mostly represented by vegetative remains. New data on the diversity of fertile structures of voltzialean conifers are obtained, and the geographic range of the genus Willsiostrobus is expanded.

报道了俄罗斯通古斯盆地早三叠世Bugarikta组volzialean雄性strobili Willsiostrobus， W. mogitchevii sp. nov.一新种。在反射光和计算机显微断层扫描的帮助下，评估球茎和远端板的形态。利用透射光显微镜、荧光显微镜、扫描电镜和透射电镜对原位花粉进行了研究。双孢粉粒可归为illinites型，花粉囊具有介于原孢和真孢之间的超微结构。这一新物种与西欧三叠纪的W. willsii (Townrow) Grauvogel-Stamm et Schaarschmidt最为相似。与欧美不同，安加拉兰三叠纪的volziales很少被报道，而且发现的大多是植物遗骸。获得了伏氏针叶树可育结构多样性的新资料，扩大了伏氏针叶树属的地理分布范围。

引用次数: 0

Taphonomic study of Pinaceae ovulate cones from the Lower Cretaceous of Belgium and paleoenvironmental implications 比利时下白垩世松科卵球果的埋藏学研究及其古环境意义

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-12 DOI: 10.1016/j.revpalbo.2025.105495

Léa De Brito

The exceptional preservation of pinaceous fossils from the Wealden facies deposits (Barremian–Albian) is demonstrated by both the abundance of specimens and the remarkable preservation, with extremely well-preserved internal and external anatomy. This exceptional preservation enables a preliminary ex situ study to describe their modes of preservation and reconstruct the broad taphonomic pathways leading to the fossilization of these ovulate cones. The systematic observation of Belgian Lower Cretaceous pinaceous material has led to the recognition of four distinct types of preservation, each reflecting different taphonomic histories, along with marked differences between geographically close localities. A comparative analysis with ovulate cones of extant Pinaceae deposited in modern forest ecosystems was conducted to establish links between cone degradation patterns and environmental conditions. These comparisons with present-day degradation processes in natural environments support a detailed interpretation of one specific fossilization pathway (type I), corresponding to cones deposited in a forest environment and subsequently subjected to rapid burial. The ex situ examination of this historical collection, despite the absence of an accurate stratigraphic context, provides valuable insights into the reconstruction of broad but nonetheless informative taphonomic features that may relate to past environmental conditions. These results provide new information about the paleoenvironmental context during the Early Cretaceous in this region. Altogether, these findings contribute new and significant information regarding the ecology and environmental settings of early Pinaceae, as well as other organisms preserved within the same sedimentary contexts, thereby enriching our understanding of Barremian–Albian ecosystems in the Wealden facies of Belgium.

来自Wealden相沉积（Barremian-Albian）的松质化石的特殊保存，既体现在标本的丰富程度，也体现在其卓越的保存，以及极其完好的内部和外部解剖结构。这种特殊的保存使得初步的非原位研究能够描述它们的保存模式，并重建导致这些卵泡球果化石的广泛的埋藏学途径。通过对比利时下白垩纪松木材料的系统观察，发现了四种不同的保存类型，每种类型都反映了不同的地语学历史，以及地理位置相近的地区之间的显著差异。通过与现代森林生态系统中现存松科植物的卵生球果的对比分析，建立了球果退化模式与环境条件之间的联系。这些与当今自然环境中退化过程的比较支持对一种特定石化途径（I型）的详细解释，对应于在森林环境中沉积的球果，随后经历了快速埋葬。尽管缺乏准确的地层背景，但对这一历史收藏品的移地检查为重建可能与过去环境条件有关的广泛但仍有信息的地貌学特征提供了有价值的见解。这些结果为该区早白垩世的古环境背景提供了新的信息。总的来说，这些发现为早期松科的生态和环境环境以及在相同沉积环境中保存的其他生物提供了新的重要信息，从而丰富了我们对比利时威尔登相巴雷米亚-阿尔比亚生态系统的理解。

{"title":"Taphonomic study of Pinaceae ovulate cones from the Lower Cretaceous of Belgium and paleoenvironmental implications","authors":"Léa De Brito","doi":"10.1016/j.revpalbo.2025.105495","DOIUrl":"10.1016/j.revpalbo.2025.105495","url":null,"abstract":"<div><div>The exceptional preservation of pinaceous fossils from the Wealden facies deposits (Barremian–Albian) is demonstrated by both the abundance of specimens and the remarkable preservation, with extremely well-preserved internal and external anatomy. This exceptional preservation enables a preliminary <em>ex situ</em> study to describe their modes of preservation and reconstruct the broad taphonomic pathways leading to the fossilization of these ovulate cones. The systematic observation of Belgian Lower Cretaceous pinaceous material has led to the recognition of four distinct types of preservation, each reflecting different taphonomic histories, along with marked differences between geographically close localities. A comparative analysis with ovulate cones of extant Pinaceae deposited in modern forest ecosystems was conducted to establish links between cone degradation patterns and environmental conditions. These comparisons with present-day degradation processes in natural environments support a detailed interpretation of one specific fossilization pathway (type I), corresponding to cones deposited in a forest environment and subsequently subjected to rapid burial. The <em>ex situ</em> examination of this historical collection, despite the absence of an accurate stratigraphic context, provides valuable insights into the reconstruction of broad but nonetheless informative taphonomic features that may relate to past environmental conditions. These results provide new information about the paleoenvironmental context during the Early Cretaceous in this region. Altogether, these findings contribute new and significant information regarding the ecology and environmental settings of early Pinaceae, as well as other organisms preserved within the same sedimentary contexts, thereby enriching our understanding of Barremian–Albian ecosystems in the Wealden facies of Belgium.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"346 ","pages":"Article 105495"},"PeriodicalIF":1.7,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797689","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

The paleoclimatic footprint in the terrestrial net primary productivity of the northern Tibetan Plateau

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-11 DOI: 10.1016/j.revpalbo.2025.105496

Anning Cui , Jianping Zhang , Xingqi Liu , Deke Xu , Hao Li , Baoshuo Fan , Houyuan Lu

Accurately estimating the net primary productivity (NPP) accumulated by vegetation during the geological periods and explore its relationship to climatic factors is crucial for assessing terrestrial ecosystem function and global carbon cycle. As the vital component of the terrestrial ecosystem, the Tibetan Plateau (TP) stores substantial NPP and is sensitive to climate changes. However, the current NPP records over the TP are generally limited to recent decades due to lack of effective proxy of paleo-NPP, and mainly focus on its response to temperature change. Here, we present a paleo-NPP record quantitatively reconstructed from fossil pollen assemblages in the northern TP during the past two millennia and discussed its response to precipitation. The results revealed the dynamics of paleo-NPP closely related to the content of Artemisia and Chenopodiaceae, showed positive correlation with Artemisia and negative correlation with Chenopodiaceae. Additionally, the paleo-NPP showed a closely relationship with the precipitation during the rainy season, which are coincide with the growth season of the alpine plants. This study suggested the significant effects of seasonal precipitation on the terrestrial NPP during the past two millennia and provide a new perspective for understanding terrestrial ecosystem carbon cycle.

准确估算地质时期植被积累的净初级生产力（NPP）并探讨其与气候因子的关系，对于评估陆地生态系统功能和全球碳循环具有重要意义。然而，由于缺乏古NPP的有效替代指标，目前青藏高原的NPP记录一般局限于近几十年，主要集中在其对温度变化的响应上。本文通过对青藏高原北部近2000年的花粉化石组合进行定量重建，并讨论了其对降水的响应。结果表明，古npp动态与蒿属和藜科植物含量密切相关，与蒿属植物呈正相关，与藜科植物呈负相关。此外，古npp与雨季降水密切相关，雨季降水与高山植物生长季节一致。本研究揭示了近两千年来季节性降水对陆地NPP的显著影响，为认识陆地生态系统碳循环提供了新的视角。

{"title":"The paleoclimatic footprint in the terrestrial net primary productivity of the northern Tibetan Plateau","authors":"Anning Cui , Jianping Zhang , Xingqi Liu , Deke Xu , Hao Li , Baoshuo Fan , Houyuan Lu","doi":"10.1016/j.revpalbo.2025.105496","DOIUrl":"10.1016/j.revpalbo.2025.105496","url":null,"abstract":"<div><div>Accurately estimating the net primary productivity (NPP) accumulated by vegetation during the geological periods and explore its relationship to climatic factors is crucial for assessing terrestrial ecosystem function and global carbon cycle. As the vital component of the terrestrial ecosystem, the Tibetan Plateau (TP) stores substantial NPP and is sensitive to climate changes. However, the current NPP records over the TP are generally limited to recent decades due to lack of effective proxy of paleo-NPP, and mainly focus on its response to temperature change. Here, we present a paleo-NPP record quantitatively reconstructed from fossil pollen assemblages in the northern TP during the past two millennia and discussed its response to precipitation. The results revealed the dynamics of paleo-NPP closely related to the content of <em>Artemisia</em> and Chenopodiaceae, showed positive correlation with <em>Artemisia</em> and negative correlation with Chenopodiaceae. Additionally, the paleo-NPP showed a closely relationship with the precipitation during the rainy season, which are coincide with the growth season of the alpine plants. This study suggested the significant effects of seasonal precipitation on the terrestrial NPP during the past two millennia and provide a new perspective for understanding terrestrial ecosystem carbon cycle.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"346 ","pages":"Article 105496"},"PeriodicalIF":1.7,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797683","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

Sublagenicula echinata sp. nov., a new sigillarian in situ megaspore from the Early Permian of Inner Mongolia, China 内蒙古早二叠世原位大孢子一新种——刺棘亚种（subblagenicula echinata）

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-10 DOI: 10.1016/j.revpalbo.2025.105493

Muhammad Imran Asghar , Jiři Bek , Josef Pšenička , Jun Wang

A new sigillarian megaspores species Sublagenicula echinata sp. nov., preserved in situ within a volcanic ash bed from the Early Permian (Asselian) Taiyuan Formation, Wuda Coalfield, Inner Mongolia is proposed. The species is distinguished by a circular to subtriangular amb, prominent trilete rays and a pyramidal subgula. The proximal-distal body bears a unique combination of laevigate, granulate, and echinate sculpture, with the echinate processes being mamillate at base and apically constricted. Analysis of the in situ megaspore population reveals a consistent range of intraspecific morphological variation, which is independent of developmental context of spores and found across the strobili. This discovery represents the first and youngest in-situ record of Sublagenicula, confirming its biological link to Sigillaria and significantly expanding the known paleogeographic distribution and diversity of this genus in the Permian of Cathaysia.

在内蒙古乌达煤田早二叠世（阿塞利世）太原组的火山灰床中，发现了一种新的大孢子虫亚种（subblagenicula echinata sp. nov.）。该物种的特点是圆形到近三角形的脚，突出的三边形射线和金字塔状的下腭。近端至远端体具有独特的锯齿状、颗粒状和刺状雕刻的组合，刺状突起在基部呈乳状，顶端狭窄。对原位大孢子种群的分析揭示了种内形态变异的一致范围，这种变异与孢子的发育环境无关，并在整个球果中发现。这一发现是第一次也是最年轻的现场记录，证实了其与Sigillaria的生物学联系，并显著扩大了该属在华夏二叠纪的已知古地理分布和多样性。

引用次数: 0

The smallest pods of Podocarpium from the Oligocene of NW Qaidam Basin, China and its implications 柴达木盆地西北渐新世Podocarpium最小荚体及其意义

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-10 DOI: 10.1016/j.revpalbo.2025.105494

Cheng Xie , Jiahao Cai , Tao Yang , Tonglin Li , Xinmeng Zhang , Qianying Zhuang , Yuyun Zhang , Defei Yan

Podocarpium (Leguminosae) is an extinct genus of Leguminosae widely documented in Cenozoic strata across Eurasia, but the lack of fossil evidence from key regions and critical time points limits the understanding of its evolutionary history and early dispersal patterns. In this study, we focus on the Early Oligocene Podocarpium of the Huatugou area in the western Qaidam Basin, located in the northeastern of the Qinghai-Tibet Plateau (QTP). Through detailed morphological observation and comparison, they are identified as a new species, named Podocarpium minicum C. Xie et D.-F. Yan sp. nov., characterized by irregularly oval pod shape, a sharply constricted apex, extremely small size, and the ratio of stipe/valve length ratio is more than 2. Based on the available fossil record, it is hypothesized that this genus may have originated in the Indian subcontinent. After migrating into the QTP, it underwent rapid radiation and further dispersed across Eurasia. The discovery of P. minicum sp. nov. suggests that the genus may have possessed relatively high diversity and a broad distribution in the Qaidam Basin. This fossil record reveals a potential “multi-track evolutionary mechanism” employed by the genus in response to environmental changes, while also reflecting that the EOT (Eocene–Oligocene Transition) may have indirectly influenced the climate of study area. This finding not only provides important evidence for understanding the evolutionary and distributional history of the genus but also offers further support for the hypothesis that it spread into Europe via a high-latitude route crossing the Turgai Strait.

豆科植物Podocarpium （Leguminosae）是一种已灭绝的豆科植物属，广泛存在于欧亚大陆新生代地层中，但缺乏来自关键地区和关键时间点的化石证据，限制了对其进化历史和早期传播模式的认识。通过详细的形态观察和比较，鉴定为一新种，命名为Podocarpium minum C. Xie et d . f。其特征为不规则卵圆形荚形，先端狭窄，体积极小，茎杆/瓣长比大于2。根据现有的化石记录，人们推测这一属可能起源于印度次大陆。在迁移到青藏高原后，它经历了快速辐射并进一步分散到欧亚大陆。该属的发现表明该属在柴达木盆地可能具有较高的多样性和广泛的分布。这一化石记录揭示了该属对环境变化的潜在“多径进化机制”，同时也反映了始新世-渐新世过渡时期可能间接影响了研究区气候。这一发现不仅为了解该属的进化和分布历史提供了重要证据，而且还进一步支持了它通过穿越图尔盖海峡的高纬度路线传播到欧洲的假设。

{"title":"The smallest pods of Podocarpium from the Oligocene of NW Qaidam Basin, China and its implications","authors":"Cheng Xie , Jiahao Cai , Tao Yang , Tonglin Li , Xinmeng Zhang , Qianying Zhuang , Yuyun Zhang , Defei Yan","doi":"10.1016/j.revpalbo.2025.105494","DOIUrl":"10.1016/j.revpalbo.2025.105494","url":null,"abstract":"<div><div><em>Podocarpium</em> (Leguminosae) is an extinct genus of Leguminosae widely documented in Cenozoic strata across Eurasia, but the lack of fossil evidence from key regions and critical time points limits the understanding of its evolutionary history and early dispersal patterns. In this study, we focus on the Early Oligocene <em>Podocarpium</em> of the Huatugou area in the western Qaidam Basin, located in the northeastern of the Qinghai-Tibet Plateau (QTP). Through detailed morphological observation and comparison, they are identified as a new species, named <em>Podocarpium minicum</em> C. Xie et D.-F. Yan sp. nov., characterized by irregularly oval pod shape, a sharply constricted apex, extremely small size, and the ratio of stipe/valve length ratio is more than 2. Based on the available fossil record, it is hypothesized that this genus may have originated in the Indian subcontinent. After migrating into the QTP, it underwent rapid radiation and further dispersed across Eurasia. The discovery of <em>P. minicum</em> sp. nov. suggests that the genus may have possessed relatively high diversity and a broad distribution in the Qaidam Basin. This fossil record reveals a potential “multi-track evolutionary mechanism” employed by the genus in response to environmental changes, while also reflecting that the EOT (Eocene–Oligocene Transition) may have indirectly influenced the climate of study area. This finding not only provides important evidence for understanding the evolutionary and distributional history of the genus but also offers further support for the hypothesis that it spread into Europe via a high-latitude route crossing the Turgai Strait.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"346 ","pages":"Article 105494"},"PeriodicalIF":1.7,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797682","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

A Middle Miocene Climate Optimum (MMCO) plant community in eastern Australia deconstructed – The plant microfossil record 澳大利亚东部中中新世气候适宜（MMCO）植物群落的解构——植物微化石记录

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-08 DOI: 10.1016/j.revpalbo.2025.105478

M.K. Macphail , H. Westermann , R.S. Hill

Isotopic (⁴⁰Ar/³⁹Ar) dates and biostratigraphic criteria demonstrate an interbedded volcaniclastic and lacustrine sedimentary sequence exposed by a landslip at c. 600 m elevation on the southern escarpment of the Bulga Plateau near the village of Elands, mid north coast of NSW, was deposited during the early stages (c. 17–16.6 Ma) of the Middle Miocene Climate Optimum (MMCO) and about 10 Ma after the collision of the Australian and Southeast Asian plates. The extinct Araucariaceae-broadleaf temperate rainforest community represented by fossil pollen and spores included Nothofagus as well as a number of thermophile taxa consistent with global warming but almost none of the subtropical taxa with Southeast Asian affinities now found in rainforest on the Bulga Plateau. We conclude that the migration of the Southeast Asian rainforest taxa did not extend as far south as latitude 31°S and upslope as high as c. 600 m elevation on this near-coastal plateau in NSW by c. 16.6 Ma. Nonetheless, MMCO warming might have prevented a number of temperate taxa from migrating further north than southeast Queensland during the Miocene e.g., Nothofagus moorei and Lophosoria. One consequence is the large number of ‘Gondwanan’ morphospecies shared with sequences in southern Australia allows biostratigraphies developed for the continental margin basins in southeast Australia to be used to date Paleogene to Early Neogene sediments in northern NSW and southern Queensland.

同位素（40Ar/39Ar）测年和生物地层标准表明，在中中新世气候适宜期（MMCO）早期（约17-16.6 Ma）和澳大利亚板块与东南亚板块碰撞后约10 Ma，新南威尔士州中北岸Elands村附近Bulga高原南缘约600 m海拔滑坡暴露出一个互层状火山碎屑和湖相沉积序列。以化石花粉和孢子为代表的已灭绝的araucariaceae -broad - leaf温带雨林群落包括Nothofagus和一些与全球变暖一致的嗜热分类群，但在Bulga高原雨林中几乎没有发现与东南亚相似的亚热带分类群。我们的结论是，在大约16.6 Ma之前，东南亚雨林类群在新南威尔士州这片近海岸高原上的迁移并没有向南延伸到北纬31°S，上坡也没有延伸到海拔600米。尽管如此，在中新世期间，MMCO变暖可能阻止了一些温带分类群向北迁移，例如Nothofagus moorei和Lophosoria。其中一个结果是，大量的“冈瓦南”形态物种与澳大利亚南部的序列共享，这使得澳大利亚东南部大陆边缘盆地的生物地层学可以用来确定新南威尔士州北部和昆士兰州南部的古近纪至早新近纪沉积物的年代。

{"title":"A Middle Miocene Climate Optimum (MMCO) plant community in eastern Australia deconstructed – The plant microfossil record","authors":"M.K. Macphail , H. Westermann , R.S. Hill","doi":"10.1016/j.revpalbo.2025.105478","DOIUrl":"10.1016/j.revpalbo.2025.105478","url":null,"abstract":"<div><div>Isotopic (<sup>40</sup>Ar/<sup>39</sup>Ar) dates and biostratigraphic criteria demonstrate an interbedded volcaniclastic and lacustrine sedimentary sequence exposed by a landslip at c. 600 m elevation on the southern escarpment of the Bulga Plateau near the village of Elands, mid north coast of NSW, was deposited during the early stages (c. 17–16.6 Ma) of the Middle Miocene Climate Optimum (MMCO) and about 10 Ma after the collision of the Australian and Southeast Asian plates. The extinct Araucariaceae-broadleaf temperate rainforest community represented by fossil pollen and spores included <em>Nothofagus</em> as well as a number of thermophile taxa consistent with global warming but almost none of the subtropical taxa with Southeast Asian affinities now found in rainforest on the Bulga Plateau. We conclude that the migration of the Southeast Asian rainforest taxa did not extend as far south as latitude 31°S and upslope as high as c. 600 m elevation on this near-coastal plateau in NSW by c. 16.6 Ma. Nonetheless, MMCO warming might have prevented a number of temperate taxa from migrating further north than southeast Queensland during the Miocene e.g., <em>Nothofagus moorei</em> and <em>Lophosoria</em>. One consequence is the large number of ‘Gondwanan’ morphospecies shared with sequences in southern Australia allows biostratigraphies developed for the continental margin basins in southeast Australia to be used to date Paleogene to Early Neogene sediments in northern NSW and southern Queensland.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"346 ","pages":"Article 105478"},"PeriodicalIF":1.7,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884572","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

Implications of the Early-Middle-Pleistocene transition in Central Europe: The Arternian interglacial macroflora near Voigtstedt, Thuringia, Central Germany 中欧早-中更新世过渡的意义：德国中部图林根州Voigtstedt附近的Arternian间冰期大型植物群

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-12-04 DOI: 10.1016/j.revpalbo.2025.105484

Frank Kienast

Only little information on flora and vegetation in Central Europe during the late Early Pleistocene is so far available. In the present article, macroscopic plant remains preserved in lacustrine Muschelton sediments near Voigtstedt, Thuringia, Central Germany during the Arternian interglacial are described in detail.

More than 16,000 plant remains representing 119 taxa were recovered, dominated by aquatic, marshland, and riparian species indicative of eutrophic, lime-rich, and locally brackish lake water conditions. The assemblage reflects a mosaic of habitats colonized by aquatic macrophytes, reed beds, alder swamps, and floodplain forests. A small proportion of terrestrial taxa indicates the presence of xerothermic shrub and grassland vegetation in the surroundings of the palaeo-lake indicating at least seasonally arid, continental climate influences.

Only five Tertiary relict taxa were identified, including Stratiotes brevispermus, Scirpus atroviroides, Alisma plantago-minima, Ranunculus gailensis, and Oenanthe mazovica, a conspicuously low number compared with other Early Pleistocene floras, supporting initial, preliminary palynological inferences that many thermophilous Tertiary species became extinct during an exceptionally harsh cold phase preceding the Arternian interglacial.

Floristic affinities with the Augustovian and Korchevian macrofloras, which both overlie the oldest till in their respective study area, suggest deposition in the aftermath of the first advance of Northern ice sheets in Eastern Europe correlated with the 0.9 Ma event. However, partly differing species compositions and palaeomagnetic signals among the compared sites highlight uncertainties in correlating individual interglacials across Europe. Therefore, a precise correlation with Marine Isotope Stages remains unresolved due to the lack of high-resolution palynological data.

到目前为止，关于早更新世晚期中欧植物区系和植被的资料很少。本文详细描述了德国中部图林根州Voigtstedt附近湖相Muschelton沉积物中在arterian间冰期保存的宏观植物遗迹。超过16000具植物遗骸，代表119个分类群，以水生、沼泽和河岸物种为主，表明富营养化、富石灰和局部咸淡湖水条件。这个组合反映了水生植物、芦苇床、桤木沼泽和洪泛区森林的栖息地的马赛克。一小部分陆生分类群表明古湖周围存在干热灌木和草地植被，表明至少受季节性干旱的大陆性气候影响。仅鉴定出5个第三系的遗留物分类群，包括Stratiotes brevispermus、Scirpus atroviroides、Alisma plantago-minima、Ranunculus gailensis和Oenanthe mazovica，与其他早更新世植物区系相比，数量明显较少，这支持了孢粉学的初步推断，即许多嗜热的第三系物种在Arternian间冰期之前的异常寒冷时期灭绝。与奥古斯都时期和科奇时期的大型植物区系相似，这两种植物区系都覆盖在各自研究区域最古老的植物上，表明沉积发生在东欧北部冰盖第一次推进之后，与0.9 Ma事件相关。然而，在比较地点之间，部分不同的物种组成和古地磁信号突出了在整个欧洲各个间冰期之间相互关联的不确定性。因此，由于缺乏高分辨率孢粉学数据，与海洋同位素阶段的精确相关性仍未得到解决。

{"title":"Implications of the Early-Middle-Pleistocene transition in Central Europe: The Arternian interglacial macroflora near Voigtstedt, Thuringia, Central Germany","authors":"Frank Kienast","doi":"10.1016/j.revpalbo.2025.105484","DOIUrl":"10.1016/j.revpalbo.2025.105484","url":null,"abstract":"<div><div>Only little information on flora and vegetation in Central Europe during the late Early Pleistocene is so far available. In the present article, macroscopic plant remains preserved in lacustrine <em>Muschelton</em> sediments near Voigtstedt, Thuringia, Central Germany during the Arternian interglacial are described in detail.</div><div>More than 16,000 plant remains representing 119 taxa were recovered, dominated by aquatic, marshland, and riparian species indicative of eutrophic, lime-rich, and locally brackish lake water conditions. The assemblage reflects a mosaic of habitats colonized by aquatic macrophytes, reed beds, alder swamps, and floodplain forests. A small proportion of terrestrial taxa indicates the presence of xerothermic shrub and grassland vegetation in the surroundings of the palaeo-lake indicating at least seasonally arid, continental climate influences.</div><div>Only five Tertiary relict taxa were identified, including <em>Stratiotes brevispermus, Scirpus atroviroides, Alisma plantago-minima, Ranunculus gailensis,</em> and <em>Oenanthe mazovica,</em> a conspicuously low number compared with other Early Pleistocene floras, supporting initial, preliminary palynological inferences that many thermophilous Tertiary species became extinct during an exceptionally harsh cold phase preceding the Arternian interglacial.</div><div>Floristic affinities with the Augustovian and Korchevian macrofloras, which both overlie the oldest till in their respective study area, suggest deposition in the aftermath of the first advance of Northern ice sheets in Eastern Europe correlated with the 0.9 Ma event. However, partly differing species compositions and palaeomagnetic signals among the compared sites highlight uncertainties in correlating individual interglacials across Europe. Therefore, a precise correlation with Marine Isotope Stages remains unresolved due to the lack of high-resolution palynological data.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"346 ","pages":"Article 105484"},"PeriodicalIF":1.7,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749738","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