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4 results for “geobiodiversity”
Data of fossils and sections of the Geobiodiversity Database (GBDB)
<p>Geobiodiversity database (GBDB, www.geobiodiversity.com) is a comprehensive stratigraphic and palaeontological database and was started in 2006. It is geological section-based and include data of over 26 500 geological sections and over 114 000 fossil taxa.</p> <p>The stratigraphic data in the GBDB are based on those published in Chinese literature since 1920s. By November 2020, all stratigraphic horizons and nearly all published geological sections can be searched and browsed in the GBDB. The GBDB fossil occurrence data are included in the stratigraphic records and can be queried and outputted. The palaeontological data are linked to the fossil collections from individual geological sections and borehole cores. The data include taxonomy (species, genus, family, order, class and division), major group, synonym (opinion data with different authors) and description (key features). Most fossil collections and occurrences of all sections from China are included in the GBDB. Subsequent authors in further study amended a portion of fossil taxa from these sections. In this way, there are also plenty of opinion data in the GBDB.</p> <p>The GBDB was designed to facilitate regional and global scientific collaborations focusing on palaeobiodiversity, systematics, palaeogeography, palaeoecology, regional correlation, and quantitative stratigraphy.</p> <p> </p>
Retrospect and prospect of a section-based stratigraphic and palaeontological database -- Geobiodiversity Database
<p>Big data are significant to the quantitative analysis and contribute to the data-driven scientific research and discoveries. Here the thorough introduction is given on the Geobiodiversity database (GBDB), a comprehensive stratigraphic and palaeontological database. The GBDB includes abundant geological records from China and contributes a serial of scientific studies on early Palaeozoic palaeogeography, tectonic and biodiversity evolution of China. Nevertheless, the existing problems of the GBDB limited the using of its data. The turnover and improvement of the GBDB were started in 2019. Besides the data collecting, processing and visualization as the GBDB did previously, the database and the website are optimized and re-designed, the new GBDB working team pays more attention to data analyzing with the professional artificial intelligence techniques. GBDB is complementary to other related databases and further collaborations are proposed to mutually benefit and push forward the quantitative research of palaeontology and stratigraphy in the era of big data. The GBDB data associated with this article can be found at https://www.geobiodiversity.com/</p>
Data from: Origins of global mountain plant biodiversity: testing the "mountain-geobiodiversity hypothesis"
Aim Our objective is to analyse global-scale patterns of mountain biodiversity (vascular plants) and the driving forces leading to the observed patterns. More specifically, we test the "mountain geobiodiversity hypothesis" (MGH) which is based on the assumption that it is not mountain-uplift alone which drives the evolution of mountain biodiversity, but rather the combination of geodiversity evolution and Neogene and Pleistocene climate changes. Hence, we address the following questions: 1) Do areas of high geodiversity and high biodiversity in mountains overlap, i.e., can mountain geodiversity predict mountain biodiversity? 2) What is the role of Pleistocene climate change in shaping mountain biodiversity? 3) Did diversification rate shifts occur predominantly with the onset of more pronounced climate fluctuations in the late Neogene and Pleistocene fostering a "species pump" effect, as predicted by the MGH? Location Global. Methods We used generalized linear models to test to what extent vascular plant species diversity in mountains can be explained by net primary productivity, geodiversity and Pleistocene climate fluctuations (i.e., changes in temperature between the Last Glacial Maximum (LGM) and today). In addition, we compiled dates of diversification rate shifts from mountain systems and investigated whether these shifts occurred predominantly before or after the global major climatic fluctuations of the late Neogene and Pleistocene. Results Both net primary productivity and elevation range show a positive relationship, whereas Pleistocene climatic fluctuations show a negative impact on plant species diversity. The availability of climatic niche space during the LGM differs markedly among mountain systems. Shifts to higher diversification rates or starts of radiations showed the highest concentration from the late Miocene towards the Pleistocene, supporting the MGH. The most commonly inferred drivers of diversification were key innovations, geological processes (uplift), and climate. Main conclusions Our analyses point towards an important role of historical factors, i.e., Pleistocene climatic changes, on mountain plant species richness. Mountain systems characterised by small elevational ranges and strong modifications of temperature profiles appear to harbour fewer radiations. In contrast, mountain systems with the largest elevational ranges and stronger overlap between today´s and LGM temperature profiles are also those where most plant radiations were identified.
Data from: Origins of global mountain plant biodiversity: testing the “mountain-geobiodiversity hypothesis”
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