Acta Palaeobotanica最新文献_第3页

The mid-Paleocene fruit and seed flora from the Fort Union Formation of Newell’s Nook, southeastern Montana, USA 美国蒙大拿州东南部纽维尔诺克联合堡组中古新世的果实和种子区系

Acta Palaeobotanica Pub Date : 2022-01-01 DOI: 10.35535/acpa-2022-0009

Indah B. Huegele, S. Manchester

{"title":"The mid-Paleocene fruit and seed flora from the Fort Union Formation of Newell’s Nook, southeastern Montana, USA","authors":"Indah B. Huegele, S. Manchester","doi":"10.35535/acpa-2022-0009","DOIUrl":"https://doi.org/10.35535/acpa-2022-0009","url":null,"abstract":"The middle Paleocene Newell’s Nook biota of the Tongue River Member of the Fort Union Formation, southeastern Montana, is best known for its early Tiffanian mammalian fauna. Here, we describe an informative fruit and seed assemblage from this locality. These records refine the lower stratigraphic boundary for several plant genera known more widely from the Fort Union paleobotanical localities of less certain stratigraphic assignment within the upper Paleocene and help to fill a gap in our knowledge about the mid-Paleocene floristic composition of the Rocky Mountain and Great Plains region. Recognized plant taxa belong to the families Characeae, Taxaceae, Menispermaceae, Sabiaceae, Hamamelidaceae, Cercidiphyllaceae, Vitaceae, Cucurbitaceae and Juglandaceae. Several morphotypes remain uncertain as to familial position. Based on the dispersal syndromes of extant relatives, about 2/3 of these fruits were adaptive for animal dispersal, with hard seeds or endocarps covered by a fleshy outer layer. Dry seeds and nuts were likely part of the diet of small mammals. The Newell’s Nook locality presents another rare example of a North American Paleocene fruit and seed locality and provides insights to the dietary habits and ecology of the co-occurring fauna of this time.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69872279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Settlements and cemeteries in Bronze Age Croatia: The archaeobotanical evidence 青铜时代克罗地亚的定居点和墓地:考古植物学证据

Acta Palaeobotanica Pub Date : 2022-01-01 DOI: 10.35535/acpa-2022-0008

Kelly Reed, Tomislav Hršak, Marija Mihaljewić, J. Balen

引用次数: 0

Did selection for seed traits across the Cretaceous/Paleogene boundary sort plants based on ploidy? 白垩纪/古近纪边界的种子性状选择是否基于倍性对植物进行分类?

Acta Palaeobotanica Pub Date : 2022-01-01 DOI: 10.35535/acpa-2022-0012

K. Berry, G. Jaganathan

{"title":"Did selection for seed traits across the Cretaceous/Paleogene boundary sort plants based on ploidy?","authors":"K. Berry, G. Jaganathan","doi":"10.35535/acpa-2022-0012","DOIUrl":"https://doi.org/10.35535/acpa-2022-0012","url":null,"abstract":"Paleobotanists debate whether the Cretaceous/Paleogene boundary (KPB) event was selective. As the hypothesis that the KPB event selected for plants with fast-return leaf economic traits (e.g. deciduousness) has lost empirical support in recent investigations, researchers have turned to alternative hypotheses to explain an abrupt decline in primary productivity across the KPB. Two contemporary hypotheses designed to explain selectivity among plants across the KPB are that (1) polyploids exhibited greater survivorship than their diploid progenitors or counterparts (i.e. the KPB-whole genome duplication or WGD hypothesis) and that (2) plants with desiccation-tolerant (DT), i.e. orthodox, seeds exhibited greater survivorship than plants with desiccationsensitive (DS), also known as recalcitrant, seeds. Late embryogenesis abundant (LEA) protein gene families are perceived to confer DT and seed longevity among vascular plants. Non-parametric Wilcoxon signed-rank test for matched pairs and a Mann-Whitney U test reveal that plant lineages perceived to have undergone WGD across the KPB exhibit significantly greater numbers of LEA genes than those that did not. On the basis of these data, this investigation elicits a merger between the KPB-WGD and KPB-seed traits concepts. However, emphasis is shifted from the concept of WGD as an immediate adaptation to climatic stress at the KPB (the KPB-WGD hypothesis) to the concept that WGD was an exaptation, which, by definition, fortuitously enhanced the survival of vascular plants across the KPB but that probably evolved initially in other climatic contexts.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69872413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Angiosperm affinities of Surangea from the late Cretaceous Deccan Intertrappean Beds of central India 印度中部晚白垩世德干间盖层中Surangea被子植物的亲缘关系

Acta Palaeobotanica Pub Date : 2022-01-01 DOI: 10.35535/acpa-2022-0013

D. Ramteke, Selena Y. Smith, D. Kapgate, E. Stanley, S. Manchester

{"title":"Angiosperm affinities of Surangea from the late Cretaceous Deccan Intertrappean Beds of central India","authors":"D. Ramteke, Selena Y. Smith, D. Kapgate, E. Stanley, S. Manchester","doi":"10.35535/acpa-2022-0013","DOIUrl":"https://doi.org/10.35535/acpa-2022-0013","url":null,"abstract":"The genus Surangea Chitaley et Sheikh, based on permineralized specimens from the Deccan Intertrappean Beds of central India, was originally considered to represent a fern megasporangium. Reexamination of original material and new specimens has revealed that the structures are capsular fruits with well-defined seeds, rather than megasporangia. We describe Surangea fruits in detail, based on peels and micro-CT scanning, and document its distribution among multiple localities of the Deccan Intertrappean Beds. The fruits are pentacarpellate septicidal capsules with ~8–12 seeds per locule. The seeds are prominently ornamented with parallel ridges and have a curved embryo/endosperm cavity and a prominent aril. This set of features indicates eudicotyledonous affinities for Surangea. In particular, the combination of septicidal capsules, axile placentation and arillate campylotropus seeds suggests affinity with the order Myrtales, but it does not fit cleanly within an extant family. Surangea fruits add to the diversity of angiosperms known from this late Maastrichtian flora. It joins several other fruit types known from the Deccan flora that do not fall neatly into extant families, possibly representing parts of an endemic community that succumbed to environmental stress associated K-Pg boundary events and/or subsequent northward rafting of the Indian subcontinent.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69872451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coexistence of Lobelia dortmanna and Cladium mariscus, an ecological and paleobotanical study 多特曼娜Lobelia dortmanna和马里斯库斯枝（Cladium mariscus）共存的生态学和古植物学研究

Acta Palaeobotanica Pub Date : 2021-12-31 DOI: 10.35535/acpa-2021-0012

K. Milecka, G. Kowalewski, A. Lewandowska, W. Szczuciński, T. Goslar

{"title":"Coexistence of Lobelia dortmanna and Cladium mariscus, an ecological and paleobotanical study","authors":"K. Milecka, G. Kowalewski, A. Lewandowska, W. Szczuciński, T. Goslar","doi":"10.35535/acpa-2021-0012","DOIUrl":"https://doi.org/10.35535/acpa-2021-0012","url":null,"abstract":"Lobelia dortmanna L. (Lobeliaceae family) is an indicator species that is predominantly found in oligotrophic and acidic lakes. They are mainly distributed in northwestern Europe. Their occurrence in Poland is highly threatened by the increasing grade of human activity and environmental eutrophication; however, new sites of Lobelia were discovered in the last few decades, for example, in Lake Krzywce Wielkie situated in Bory Tucholskie National Park (BTNP), Poland. The existence of Lobelia in this lake was unexpected because Cladium mariscus was also found in the lake. Cladium has different ecological demands and is regarded as a species typical of calcareous habitats where calcium is found in abundance in the substrate. To explain the coexistence of both species in Krzywce Wielkie, pollen analysis of organic sediments was performed for four short cores collected from the littoral zone of the lake and for one long deep-water core. Additionally, macrofossil analysis was done for all the short cores. Pollen analysis revealed the existence of Cladium from the early Holocene period up to the present time. Pollen and seeds of Lobelia were found to be present since the beginning of the 20th century. Development of L. dortmanna and Myriophyllum alterniflorum populations and a decrease in the number of aquatic macrophytes in the eutrophic water indicate oligotrophication of water. This process started following the construction of drainage canal and the consequent water level decrease. This situation can be attributed to the abandonment of the agricultural areas adjoining the lake, which causes a decrease in the inflow of nutrients into the lake. Development of pine forest and establishment of BTNP enabled the protection and conservation of the surrounding catchment areas, thus restricting the potential eutrophication of the habitats.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48638822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three early plant taphonomy experiments (1833-1836) 三次早期植物埋藏学实验(1833-1836)

Acta Palaeobotanica Pub Date : 2021-12-31 DOI: 10.35535/acpa-2021-0011

M. Philippe

引用次数: 0

Typification of the genus Zizyphoides Seward et Conway (Magnoliophyta, Trochodendraceae) Ziyphoides Seward et Conway属的分类（木兰门，菊科）

Acta Palaeobotanica Pub Date : 2021-12-31 DOI: 10.35535/acpa-2021-0007

A. Zolina, S. Manchester, L. Golovneva

引用次数: 2

A Late Würmian and Holocene pollen profile from Tüttensee, Upper Bavaria, as evidence of 15 Millennia of landscape history in the Chiemsee glacier region 来自上巴伐利亚州tttensee的晚wrman和全新世花粉剖面，作为Chiemsee冰川地区15000年景观历史的证据

Acta Palaeobotanica Pub Date : 2021-12-31 DOI: 10.35535/acpa-2021-0008

M. Rösch, Arne Friedmann, S. Rieckhoff, P. Stojakowits, D. Sudhaus

引用次数: 1

Plant economy of the Trzciniec culture based on charred plant remains from Pielgrzymowice 9 site, in the context of archaeobotanical finds from southern Poland 波兰南部古植物发现背景下，基于Pielgrzymowice 9遗址烧焦的植物遗骸的Trzciniec文化的植物经济性

Acta Palaeobotanica Pub Date : 2021-12-31 DOI: 10.35535/acpa-2021-0009

Magda Kapcia

引用次数: 0

The late Pleistocene and Holocene history of Pinus koraiensis (Korean Pine) in the south of the Russian Far East based on palynological data 基于孢粉学资料的俄罗斯远东南部红松晚更新世和全新世历史

Acta Palaeobotanica Pub Date : 2021-12-31 DOI: 10.35535/acpa-2021-0010

P. Belyanin, N. Belyanina

{"title":"The late Pleistocene and Holocene history of Pinus koraiensis (Korean Pine) in the south of the Russian Far East based on palynological data","authors":"P. Belyanin, N. Belyanina","doi":"10.35535/acpa-2021-0010","DOIUrl":"https://doi.org/10.35535/acpa-2021-0010","url":null,"abstract":"This paper reviews the distribution of Pinus koraiensis in the south of the Russian Far East in the past based on palynological and chronological data. The aim is to determine the chronological timing of the spatial migration of Pinus koraiensis and to correlate it with climate fluctuations explaining the changes of the geographical range of Pinus koraiensis in the south of the Russian Far East during the Marine Isotope Stages MIS 5 (127 000–71 000 BP), MIS 3 (57 000 BP – 28 000 cal BP), MIS 2 (28 000–11 700 cal BP), and MIS 1 (11 700 cal BP – to present). The consideration of the obtained pollen fossil data suggests that the range of Pinus koraiensis was in the south of the Russian Far East during MIS 5, as it was proved based on significant pollen grain percentage in the sediments of this age. Pinus koraiensis was widespread along with Pinus densiflora, Quercus, Ulmus, Juglans, Carpinus, and Phellodendron. During MIS 3, Pinus koraiensis was a component of birch-fir and birch-broadleaved forests. In MIS 2, Pinus koraiensis disappeared from the vegetation of this region. In the early Holocene, Pinus koraiensis expanded its range northward and again appeared in the vegetation of the south of the Russian Far East. Soon enough, it became one of the leading components in spruce-fir forests with Quercus and Ulmus. The increase in its proportion in the vegetation in the Holocene coincided mostly with the periods of warming climate from 11 700 to 11 500 cal BP, from 10 100 to 9300 cal BP, from 8800 to 5300 cal BP, from 4700 to 3500 cal BP, and from 2600 to 1800 cal BP. In the present case, the most diverse vegetation with Pinus koraiensis was typical of the Holocene optimum of the south of the Russian Far East from 8800 to 5300 cal BP.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45947016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1