The International Meetings of Early-stage Researchers in Palaeontology (IMERP) are aimed at early-stage palaeontologists, from undergraduate students to recent post-doctoral researchers. Geologists, biologists or any scientist with research topics related to palaeontology, as well as palaeoartists, are also welcome. The IMERP has two main objectives: To provide a friendly environment for early-stage researchers to present their research through oral or poster presentations and follow each other’s progress. To share new methods and ideas useful in palaeontology, and develop the skills of the attendees with the help of leading experts, invited to give lectures about their fields. The IMERPs are usually held in villages or towns located in countryside areas of geological interest. This way the meeting can be held in a closer and more friendly environment, as well as help to the dissemination of the regional natural heritage among the local population. A field trip to this paleontological and geological heritage is offered to the meeting participants. After the 1st IMERP in 2016, the 2nd IMERP was held in Sigri (Lesbos, Greece) in 2017, the 3rd IMERP in Krasiejów (Opole, Poland) in 2018, and the 4th in Cuenca (Spain) in 2019
<p>Bretskyan hierarchy of eco-evolutionary entities is a useful theoretical concept that defines hierarchies of communities of species which reside in the same geographical space and are tied together by ecological interactions and evolutionary history. Bretskyan hierarchy can be employed to define and track the evolving hierarchy of bioregions, allowing all sorts of (paleo)biogeographical investigations to be carried out: from finding the causes why bioregions split or fuse and how this happens at many spatial scales, ie. what drives the internal structure of bioregions in Bretskyan hierarchy. Unfortunately, methodical applications of this concept are challenging due to the hybrid nature of Bretskyan hierarchy entities and fuzziness of their boundaries.</p> <p>In order to help solve the presented problem of explicit subdivision of contiguous spatial regions, which are in our understanding the units of the Bretskyan hierarchy, we propose a new method, within the newly developed R package &#8220;HespDiv&#8221; which presents a range of functionalities for the determination of spatial structures/bioregions. The method uses fossil taxa distribution data to subdivide a provided territory into hierarchically related (each bioregion is a strict sub-set of larger bioregion) and topologically contiguous bioregional units. It produces split-lines which are used to subdivide bioregions. This subdivision can be done by employing linear or nonlinear divisor lines inside predetermined area polygons. In a latter case, the inferred bioregions can obtain more realistic shapes. The application of &#8220;HespDiv&#8221; method to Miocene fauna from the contiguous United States was performed in order to demonstrate the potential of the method. Morisita-Horn similarity index was used to measure differences between fossil taxa communities. The results revealed 25 distinct, topologically contiguous and hierarchically related bioregions had the structure dominated by longitudinal and diagonal boundaries, and the three most distinct bioregions were: West Coast, Central Plains and south-east US.</p> <p>&#160;The numerical analyses of real world paleobiogeographical data with newly developed &#8220;HespDiv&#8221; method indeed show a high potential of the approach in objectively defining the hierarchical units of the Bretskyan hierarchy of (paleo)bioregions in sufficiently densely sampled regions and time bins.</p> <p>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Presented research is funded by project S-MIP-21-9 &#8220;The role of spatial structuring in major transitions in macroevolution&#8221;.</p>
The aim of the conference is to bring together young scientists, engineers, researchers and students of Lithuanian universities, institutes, centers of science and business to carry out research in the field of chemistry and chemical technology, to provide the opportunity to expand knowledge and present the latest scientific results and ideas.
Chemija ir cheminė technologija 2019 Studentų mokslinė konferencija CCT 2019 | 3 psl. KONFERENCIJOS PROGRAMA Konferencijos programa Gegužės 17 d. Vieta: Nacionalinis fizinių ir technologijos mokslų centras (Saulėtekio a. 3, Vilnius
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