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Home > Science and research > Projects > Projects – Biodiversity and global changes in geological history

Projects – Biodiversity and global changes in geological history

The projects investigated by the Czech Geological Survey within the frame of the main research priority "Biodiversity and global changes in geological history" of the CGS Research Strategic Plan for 2016–2020.

310170

Mokřady a jejich význam v krajině

Project manager: RNDr. Eva Břízová, CSc. Duration of the project: 01.01.2018–31.12.2021

310370

Vznik a vývoj atypických kruhových depresí v Hodonínské dúbravě v kontextu pleistocenních periglaciálních procesů

Project manager: RNDr. Jan Hošek, Ph.D. Duration of the project: 01.01.2019–31.03.2021

310380

Vybrané tafocenózy mesozoika a kenozoika II: strategie, paleoekologie, taxonomie a paleobiogeografie

Project manager: Mgr. Radek Vodrážka Duration of the project: 01.01.2019–31.03.2021

310420

Fytopaleontologické, sedimentologické a palynologické studium permokarbonských pánví

Project manager: RNDr. Zbyněk Šimůnek, CSc. Duration of the project: 01.01.2019–31.03.2021

310580

Vliv globálních změn na fanezoroická společenstva: evoluce kambrických až devonských vybraných skupin bezobratlých; výzkum vybrané kenozoické fauny (Gastropoda, Amniota) – paleontologická revize sbírkového fondu ČGS

Project manager: RNDr. Petr Budil, Ph.D. Duration of the project: 01.01.2019–31.12.2022

310590

Homér-paleontologická, sedimentologická a geologická studie stratotypu

Project manager: RNDr. Zuzana Tasáryová, Ph.D. Duration of the project: 01.01.2019–31.03.2021

311000

Fytopaleontologický a sedimentologický výzkum permokarbonských pánví Českého masívu.

Project manager: RNDr. Zbyněk Šimůnek, CSc. Duration of the project: 01.01.2021–31.12.2022

311010

Silurské stratotypy pražské pánve

Project manager: RNDr. Zuzana Tasáryová, Ph.D. Duration of the project: 01.01.2021–31.12.2022

311070

Výzkum biodiverzity a globálních změn v minulosti

Project manager: prof. RNDr. Jiří Frýda, Dr. Duration of the project: 01.01.2021–31.12.2022

323000

Special studies, methodics of research, PhD studies

Project manager: Mgr. Alena Václavíková Duration of the project: 01.01.1999–31.12.2021

611300

Searching for biological fingerprints and grain alteration patterns in Devonian and Carboniferous microbial facies - examples from the Bohemian Massif

In this project we investigate putative microbialite facies associated with one of the most severe extinction evens of the Phanerozoic, the Late Devonian Kellwasser and Hangenberg events, and on the two preceding Middle Devonian Basal Choteč and Kačák events. We intend to focus on internal arrangement and fabric of micritic precipitates in order to assess the role of taphonomy in the formation and preservation of recorded microstructures, and to decipher modes and patterns in grain alteration and peloid formation within the mentioned stratigraphic levels. We further aim to test whether extinctions at the end of Devonian influenced the structure of microbial biota. To document and compare the range of morphologies at ultrastructural level using SEM and to assess spatial and textural relations of carbonate precipitates is essential in our investigation but in addition to that, REE+Y analysis will be carried out as it has proved to represent promising additional fingerprint of microbial involvement in carbonate precipitation.

Project manager: Mgr. Stanislava Vodrážková, Ph.D. Duration of the project: 01.01.2020–31.12.2022

647600

Palaeoclimatologic significance of Palaeozoic red pelagic carbonates: time specific facies or products of microbial activity?

Red pelagic carbonates are distinct marine facies, which form under oligotrophic and well-oxygenated sea-bottom conditions and/or due to activity of iron oxidizing bacteria. The mechanism of their deposition is not well-understood. Since they commonly occur during warm greenhouse periods of the Phanerozoic (Devonian, Jurassic, Cretaceous), they can be considered as time-specific facies linked to marine redox conditions, similarly as black shales. In this project, we will study the red carbonates in three Palaeozoic greenhouse periods - Ordovician, early and late Devonian - and in seven areas of the Europe and South China. Through analyses of stratigraphic context, carbonate petrology, mineralogy of Fe oxy-hydroxides, element geochemistry and microgeochemistry and stable isotopes we will interpret the redox conditions, organic productivity and presence or absence of microbial activity as possible controls of the red carbonate deposition. The principal aim is to make an insight into the origin and paleoclimatological context of the red carbonate facies in the Palaeozoic.

Project manager: prof. RNDr. Jiří Frýda, Dr. Duration of the project: 01.01.2019–31.12.2021

648000

Cherts and carbonates as geochemical proxies of paleoenvironmental conditions and Ocean Plate Stratigraphy

Cherts and carbonates represent outstanding and widespread members of Ocean Plate Stratigraphy (OPS) from the Archean to present. Their composition reflects different conditions during their deposition, which can be potentially linked to the contrasting and temporally changing processes that occurred on moving oceanic plates. Additionally, they also provide unique insights into the compositional variations in seawater chemistry and temperature as well as redox conditions of their depositional environment. We will pursue a multi-technique study combining tectonic, structural, and stratigraphic observations with elemental and isotopic (Hf–Nd–Mo–Si–C–O) data to reveal the origin and nature of chert and carbonate successions in ancient OPS sections and test whether they can be used as geochemical proxies for the variable processes occurring on oceanic plates. The project will also contribute to our understanding of paleoenvironmental conditions during the late Proterozoic–Cambrian with implications for global events preceding and synchronous with the Great Cambrian Explosion of life.

Project manager: RNDr. Jan Pašava, CSc. Duration of the project: 01.01.2020–31.12.2022

648100

Biostratigraphy and faunal dynamics of the Silurian pelagic biota of the Prague Basin in the context of major environmental changes and perturbations

The project proposes a general revision and update of the Silurian graptolite and conodont biostratigraphy of the Prague Basin based on a series of reference sections. High-resolution graptolite biozonation is primarily applied in off-shore successions, the conodont biozonation is a first choice in limestone-dominated facies. The two extinct groups of the pelagic fauna are rarely found together but both co-occur with pelagic cephalopods in middle and upper Silurian sections. Correlation of the two parallel zonal schemes will be tested using time specific indices of major and global environmental changes, such as mass faunal extinctions, carbon isotope excursions, facies changes and unconformities. Faunal dynamics of the principal pelagic biota (graptolites, conodonts and cephalopods) will be inferred from species richness, origination and extinction events and morphological disparity, and based on revised species range charts. Available and new biostratigraphic data obtained from at least 59 sampled sections will elucidate nature, selectivity and timing of the global bioevents.

Project manager: RNDr. Štěpán Manda Duration of the project: 01.01.2020–31.12.2022

661310

Palaeogeographic Maps of Permian Continental Basins of Central Europe

The Middle Sudeten Trench is one of the largest geological structures in the Sudetenland. Its geological diversity creates a unique opportunity for research projects. The uniqueness of the sediments of the Middle Sudeten Basin is evidenced by the fact that it is one of the richest sites in the world for preserved traces of Early Permian tetrapods. In view of this, it is necessary to carry out a comprehensive paleoenvironmental analysis based on modern research methods. The intention of the project is to unify and update the stratigraphic schemes of the Permian. The project aims to unify and update the stratigraphic schemes of the Permian in the Middle Sudeten Basin based on the traces and fossils found and their comparative analysis. Studies will include sedimentological, geochemical and innovative methods, and geochronological, paleoecological and paleoenvironmental studies will be conducted. The project will contribute to the preparation of palaeogeographical maps of the Permian terrestrial basins of Central Europe.

Project manager: RNDr. Zbyněk Šimůnek, CSc. Duration of the project: 19.04.2018–05.05.2022

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