Ecuador has an outstanding diversity of palm species, some of which have been well studied, certain others remain an enigma, however. A particular case is the American oil palm, Elaeis oleifera (Kunth) Cortés, first recorded in Ecuador in 1986. The genus Elaeis has a trans-Atlantic (Africa-America) distribution, with E. oleifera from the Neotropics...
The causes of the species richness of tropical trees are poorly understood, in particular the roles of ecological factors such as soil composition. The nickel(Ni)-hyperaccumulating tree genus Geissois (Cunoniaceae) from the South-west Pacific was chosen as a model of diversification on different substrates. Here, we investigated the leaf element co...
The causes of the species richness of tropical trees are poorly understood, in particular the roles of ecological factors such as soil composition. The nickel(Ni)-hyperaccumulating tree genus Geissois (Cunoniaceae) from the South-west Pacific was chosen as a model of diversification on different substrates. Here, we investigated the leaf element co...
Conventional “spaghetti” tags have been used for a long time in Tropical Atlantic Ocean and have been collected by ICCAT secretary with the collaboration of scientists and fishermen. Despite, careful examination of the information provided at release and at recapture some errors may persist into the ICCAT tagging data base. The aim of this short no...
Tagging data obtained during the research program called MAC are reanalyzed for skipjack tuna (Katsuwonus pelamis), using the von Bertalanffy-Fabens' growth model. Tagging surveys were initiated during 1996-1999 on-board commercial baitboats in Mauritanian and Senegalese waters. The analyses include the Francis' maximum likelihood estimation approa...
With the aim of increasing the precision of parameter estimates in tagging analyses, we assumed that the dynamics of tagged fish from different tropical tuna species have processes in common. With this consideration in mind we fit different data sets from two distinct periods of the eastern Atlantic fishery with a multispecies tag-attrition model t...
