Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados 31 (58) Autor Turvey, Calum G. (58) Kong, Rong (4) Meilke, Karl D. (4) Onyango, Benjamin M. (4) Power, Gabriel J. (4) Weersink, Alfons (4) Escalante, Cesar L. (3) Govindasamy, Ramu (3) Puduri, Venkata S. (3) Rienstra-Munnicha, Paul (3) Schilling, Brian J. (3) Hallman, William K. (2) Hoy, Michael (2) Huff, Karen (2) Islam, Zahirul (2) Mafoua, Edouard (2) Nayak, Govindaray (2) Norton, Michael T. (2) Baker, Timothy G. (1) Barry, Peter J. (1) Mais... Palavra-chave Risk and Uncertainty (22) Agricultural Finance (8) Marketing (8) Financial Economics (6) Food Consumption/Nutrition/Food Safety (6) Agribusiness (5) International Relations/Trade (5) Crop insurance (4) Agricultural and Food Policy (3) China (3) Crop Production/Industries (3) Demand and Price Analysis (3) Farm Management (3) Q13 (3) Q14 (3) Weather derivatives (3) C52 (2) C53 (2) Consumer/Household Economics (2) G12 (2) Mais... Tipo do documento Conference Paper or Presentation (28) Working or Discussion Paper (14) Journal Article (12) Report (2) Working Paper (2) Ano 2011 (1) 2010 (5) 2009 (3) 2008 (4) 2007 (4) 2006 (6) 2005 (4) 2004 (5) 2003 (6) 2002 (8) 2001 (2) 1999 (7) 1996 (1) 1992 (1) 1991 (1) Mais... País United States (58) Idioma Inglês (58)		Registro completo Provedor de dados:  17 País:  United Kingdom Título:  Ecological control on micro-ornamentation of conodont elements Autores:  Andrey V. Zhuravlev Data:  2007-08-09 Ano:  2007 Palavras-chave:  Earth & Environment Resumo:  Conodonts are considered now as specific group of early Chordata or even Vertebrata. Fifteen tooth-like conodont elements of seven morphological types compose the oral apparatus of conodonts. The elements demonstrate complex morphology. All the elements bear polygonal micro-ornamentation. The ornamentation is considered as representing imprints of the epithelium cells. Ecological dependencies of the cell sizes are known for some recent organisms.
The maximum cell sizes are characteristic of optimal environmental conditions. Thus, one can supposes that decreasing in cell imprint size in the conodonts marks disturbance in water temperature or/and oxygen content.
 Tipo:  Manuscript Identificador:  http://precedings.nature.com/documents/659/version/1 oai:nature.com:10101/npre.2007.659.1 http://hdl.handle.net/10101/npre.2007.659.1 Fonte:  Nature Precedings Direitos:  Creative Commons Attribution 3.0 License Fechar

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco