Raimundo Llull y la paz universal

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Reseña: Anuario de Historia del Derecho Español, 72 (2002), Ministerio deJusticia y Boletín Oficial del Estado, 822 pp.

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Juan Sainz Guerra, La evolución del Derecho penal en España

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Anuario de Historia del Derecho Español, t. LXXV

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Pedro González-Trevijano, La España constitucional

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Spanish adjectival passives with a progressive reading

This paper addresses Spanish adjectival passives with estar showing a progressive reading. In the previous literature, it has been acknowledged that the participles of verbs encoding non-dynamic events, such as vigilar ‘guard’, give rise to a progressive reading when embedded in adjectival passives. Yet, we have identified another group of verbs, those of the type of perseguir ‘chase’, which denote dynamic atelic events (i.e., activities) and whose participles are also attested in estar-passives with a progressive denotation. This is a very significant finding, since it is commonly assumed that only participles of verbs including a stative component in their event structure (i.e., telic or stative verbs) can be part of adjectival passives. After comparing the behaviour of these two types of verbs, we propose that they share a relational layer that in the case of vigilar-verbs defines an event as non-dynamic and in the case of perseguir-verbs defines a motion event as continuously maintained. This relational layer, which constitutes the stative component needed for the adjectival passive construction to be possible, accounts for the necessary atelicity of these two verbal classes (which cannot be telicized under any circumstances) and for the progressive reading obtained in their adjectival passives

Conflicting Selection in the Course of Adaptive Diversification: The Interplay between Mutualism and Intraspecific Competition

Adaptive speciation can occur when a population undergoes assortative mating and disruptive selection caused by frequency-dependent intraspecific competition. However, other interactions, such as mutualisms based on trait matching, may generate conflicting selective pressures that constrain species diversification. We used individual-based simulations to explore how different types of mutualism affect adaptive diversification. A magic trait was assumed to simultaneously mediate mate choice, intraspecific competition, and mutualisms. In scenarios of intimate, specialized mu- tualisms, individuals interact with one or few individual mutualistic partners, and diversification is constrained only if the mutualism is obligate. In other scenarios, increasing numbers of different partners per individual limit diversification by generating stabilizing selection. Stabilizing selection emerges from the greater likelihood of trait mismatches for rare, extreme phenotypes than for common intermediate phenotypes. Constraints on diversification imposed by increased numbers of partners decrease if the trait matching degree has smaller positive effects on fitness. These results hold after the relaxation of various assumptions. When trait matching matters, mutualism-generated stabilizing selection would thus often constrain diversification in obligate mutualisms, such as ant-myrmecophyte associations, and in low-intimacy mutualisms, including plant-seed disperser systems. Hence, different processes, such as trait convergence favoring the incorporation of nonrelated species, are needed to explain the higher richness of low-intimacy assemblages—shown here to be up to 1 order of magnitude richer than high-intimacy systems