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	Provedor de dados RChHN (2) Autor LIMA,MAURICIO (2) ALFARO,MATILDE (1) MAUCO,LAURA (1) NORBIS,WALTER (1) Palavra-chave Climate (1) Exogenous factors (1) Feedback structure (1) Feeding ecology (1) Food web structure (1) Migration (1) Population dynamics (1) Seasonal regulation (1) Stochasticity (1) Temporal variation (1) Terns (1) Uruguay (1) Mais... Tipo do documento Journal article (2) Ano 2011 (1) 2001 (1) País Chile (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The dynamics of natural populations: feedback structures in fluctuating environments RChHN LIMA,MAURICIO. The fluctuations exhibited by natural populations have fascinated ecologists for the last eighty years. However, a vigorous debate between different schools of population ecologists has hampered reaching a consensus about the causes of such numerical fluctuations. Recent findings and a more synthetic view of population change espoused by ecologists, statisticians, and mathematicians have integrated the role of nonlinear feedback (deterministic) and external environmental (deterministic or stochastic) processes in the dynamics of natural populations. The new challenge for population ecologists is to understand how these two different forces interact in nature. In this commentary, I review some of the basic principles of population analysis during the last... Tipo: Journal article Palavras-chave: Population dynamics; Feedback structure; Exogenous factors; Seasonal regulation; Stochasticity; Food web structure; Climate. Ano: 2001 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200009 Temporal variation on the diet of the South American Tern (Sterna hirundinacea, Charadriiformes: Laridae) on its wintering grounds RChHN ALFARO,MATILDE; MAUCO,LAURA; NORBIS,WALTER; LIMA,MAURICIO. The diet of the South American Tern (Sterna hirundinacea) and its seasonal variation during the 2005 and 2006 non-reproductive seasons in the Uruguayan Atlantic coast was analyzed. Diet was assessed by the analysis of pellets collected in the Rocha lagoon sandbar, a major tern roosting area in Uruguay, aiming to analyze the hypothesis that terns feed mainly on the Argentine Anchovy (Engraulis anchoita) during the wintering period. A total of 844 pellets were collected, 442 in 2005 and 402 in 2006. Diet was composed of fish (88 %), insects (9 %) and crustaceans (3 %). The main fish species consumed was the Argentine Anchovy (77.7 %), followed by Marini's Anchovy (Anchoa marinii) (7.9 %) and the Striped Weakfish (Cynoscion guatucupa) (3.6 %). Insects and... Tipo: Journal article Palavras-chave: Feeding ecology; Migration; Temporal variation; Terns; Uruguay. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000300011 Registros recuperados: 2 Primeira ... 1 ... Última

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