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| Chen, C; Pierce, G; Wang, J; Robin, J; Poulard, Jean-charles; Pereira, J; Zuur, A; Boyle, P; Bailey, N; Beare, D; Jereb, P; Ragonese, S; Mannini, A; Orsi-relini, L. |
| Since the early 1990s, Loligoforbesi has apparently disappeared from much of the southern part of its former range, with catches off the Iberian Peninsula, for example, declining dramatically during the 1990s. The present paper assembles data from fishery and research cruise databases to examine the evidence for a shift in distribution, examine the relationship between abundance of this species and that of the partially sympatric Loligo vulgaris, and identify possible environmental correlates. Time-series of abundance of L. forbesi and L. vulgaris were assembled using fishery and survey data from Scotland, France, and Portugal. Based on availability of data and timing of the main fishery, data for autumn (October-December) were selected. Nine squid series... |
| Tipo: Text |
Palavras-chave: North Atlantic Oscillation NAO; Dynamic factor analysis; Common trends; Abundance; Squid fishery; Loligo. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1539.pdf |
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| Holmes, Mark J.. |
| This study assesses long-run real per capita output convergence among selected Latin American countries. The empirical investigation, however, is based on an alternative approach. Strong convergence is determined on the basis of the first largest principal component, based on income differences with respect to a chosen base country, being stationary. The qualitative outcome of the test is invariant to the choice of base country and, compared to alternative multivariate tests for long-run convergence, this methodology places less demands on limited data sets. Using annual data for the period 1960-2000, strong convergence is confirmed for the Central American Common Market. However, an amended version of the test confirms weaker long-run convergence in the... |
| Tipo: Journal Article |
Palavras-chave: Output convergence; Latin America; Common trends; F15; O19; O40; O54. |
| Ano: 2005 |
URL: http://purl.umn.edu/37134 |
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