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DOI:	10.1371/journal.pone.0108307
论文题名:	Species Richness and Evidence of Random Patterns in Assemblages of South American Titanosauria during the Late Cretaceous (Campanian–Maastrichtian)
作者:	Washington Luiz Silva Vieira; Kleber Silva Vieira; Rômulo Pantoja Nóbrega; Paulo Fernandes Guedes Pereira Montenegro; Gentil Alves Pereira Filho; Gindomar Gomes Santana; Rômulo Romeu Nóbrega Alves; Waltécio Oliveira Almeida; Alexandre Vasconcellos
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-9-23
卷:	9, 期:9
语种:	英语
英文关键词:	Paleoecology ; Cretaceous period ; Species diversity ; Stratigraphy ; Species interactions ; Sauropoda ; Physiological parameters ; Paleogenetics
英文摘要:	The Titanosauria were much diversified during the Late Cretaceous, but paleobiological information concerning these sauropods continues to be scarce and no studies have been conducted utilizing modern methods of community analysis to infer possible structural patterns of extinct assemblages. The present study sought to estimate species richness and to investigate the existence of structures in assemblages of the South American Titanosauria during the Late Cretaceous. Estimates of species richness were made utilizing a nonparametric estimator and null models of species co-occurrences and overlapping body sizes were applied to determine the occurrence of structuring in this assemblages. The high estimate of species richness (n = 57) may have been influenced by ecological processes associated with extinction events of sauropod groups and with the structures of the habitats that provided abundant support to the maintenance of large numbers of species. The pseudocommunity analysis did not differ from that expected by chance, indicating the lack of structure in these assemblages. It is possible that these processes originated from phylogenetic inertia, associated with the occurrence of stabilized selection. Additionally, stochastic extinction events and historical factors may also have influenced the formation of the titanosaurian assemblages, in detriment to ecological factors during the Late Cretaceous. However, diagenetic and biostratinomic processes, influenced by the nature of the sedimentary paleoenvironment, could have rendered a random arrangement that would make assemblage structure undetectable.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0108307&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/18167
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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作者单位:

Laboratório de Ecofisiologia Animal, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, PB, Brazil;Laboratório de Ecofisiologia Animal, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, PB, Brazil;Laboratório de Ecofisiologia Animal, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, PB, Brazil;Laboratório de Ecofisiologia Animal, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, PB, Brazil;Museu de Zoologia da Universidade de São Paulo, Ipiranga, São Paulo, SP, Brazil;Programa de Pós-Graduação em Ecologia e Conservação (PPGEC)/Departamento de Biologia, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brazil;Programa de Pós-Graduação em Ecologia e Conservação (PPGEC)/Departamento de Biologia, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brazil;Departamento de Biologia, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brazil;Departamento de Química Biológica, Centro de Ciências Biológicas e da Saúde, Universidade Regional do Cariri – URCA, Campus do Pimenta, Crato, CE, Brazil;Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, PB, Brazil

Recommended Citation:

Washington Luiz Silva Vieira,Kleber Silva Vieira,Rômulo Pantoja Nóbrega,et al. Species Richness and Evidence of Random Patterns in Assemblages of South American Titanosauria during the Late Cretaceous (Campanian–Maastrichtian)[J]. PLOS ONE,2014-01-01,9(9)

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