Underlying maintenance mechanisms of reef ecosystems in Early and Middle Palaeozoic, and earliest Mesozoic time: Elucidation of ecosystem-generatingprocesses under greenhouse-Earth environments

这个研究项目涉及不同年龄的典型温室珊瑚礁。此外，根据其无性繁殖和生长的方式，研究了最具代表性的造礁动物scellactinia。下奥陶统生物礁主要由大型、系统发育先锋型、骨架型和叠层石型生物礁组成。详细的区域和特定年龄的生态演替进行了检查，以及大型骨骼和微生物礁在特定地质时期横向共存的主要原因。关于下泥盆纪的例子，珊瑚礁的主要成分尤其引人注目，珊瑚礁石灰石的直接成因机制在生物相互作用方面得到了破译。我特别关注什么样的栖息地微环境导致了生物相互关系中的什么样的变化，以及它们是如何最终发生的……更多的记录在珊瑚礁石灰石中。最后，针对礁灰岩的碳酸盐组分的成因，以及礁灰岩在礁结构和构造中的构造和破坏作用，对礁灰岩进行了总结。最低三叠纪血栓岩礁在二叠纪末灭绝后立即清晰地表达了它们的古环境意义。根据(1)二叠纪和三叠纪明显的不整合接触，(2)微生物岩结构和结构在特定趋势下的连续变化，(3)δ^<13>C波动模式及其全球相关性，特别是与gssp的相关性，重建了高分辨率波动。通过对现存硬核动物的研究，我们了解了无性繁殖模式和由此产生的生长模式的基本现象，以及它们对日益恶化的环境变化的生态反应。上述发现对于理解整个地质时期地球生物环境的自我创造过程和现代地球的真实本质也具有重要意义。少

This research project deals with greenhouse reefs typical of individual ages. In addition, the Scleractinia, which are the most representative reef-builders, were examined in light of their modes of asexual reproduction and growth.1. As to the Lower Ordovician reefs, special attention was paid to the construction traits of reefs that were made up mainly of large, phylogenetically pioneer, skeletal reefs and stromatolite reefs. Detailed regional and age-specific ecological successions were examined, along with the chief causes of the lateral coexistence of both large skeletal and microbial reefs at a particular geologic time.2. Concerning the Lower Devonian examples, reefs were especially remarkable in their main constituents, and the immediate genetic mechanisms of reefal limestones were deciphered in terms of biotic interactions. I paid special attention to what kinds of habitat microenvironments caused what kinds of changeovers in biotic interrelations, and how they were consequently … More recorded in reefal limestones. Finally, the relevant reefal limestones were summarized in view of the genesis of the carbonate components, as well as the constructive and destructive roles in reef textures and structures.3. Lowest Triassic thrombolite reefs clearly express their palaeoenvironmental implications immediately after the end-Permian extinction. High-resolution fluctuations were reconstructed on the basis of (1) the distinctive unconformable contact between the Permian and Triassic, (2) successive changes in microbialite texture and structure within a particular trend, and (3) δ^<13>C fluctuation patterns and their global correlation, particularly with those at the GSSP.4. The study of extant scleractinians produced insights into essential phenomena regarding both asexual modes of reproduction and the resultant growth modes, as well as their ecological response to deteriorating environmental changes.The above-mentioned findings are also of great importance for understanding the self-creation processes of geobiological environments throughout geologic time and the true nature of the modern Earth. Less