منابع مشابه
Hominid Brain Evolution Testing Climatic, Ecological, and Social Competition Models
Hypotheses regarding the selective pressures driving the threefold increase in the size of the hominid brain since Homo habilis include climatic conditions, ecological demands, and social competition. We provide a multivariate analysis that enables the simultaneous assessment of variables representing each of these potential selective forces. Data were collated for latitude, prevalence of harmf...
متن کاملSpatial competition: roughening of the ecological interface
Limited dispersal distance, whether due to vegetative growth or localized 2 reproduction, generates spatial clustering. Many invasive plants, in particular, propagate clonally and aggregate spatially. Local dispersal concentrates intraspecific interactions 4 within clusters, while most between-species interactions occur near cluster boundaries. Spread of a spatially clustered, invasive plant th...
متن کاملEcological Theory of Language Acquisition
This poster outlines an Ecological Theory of Language Acquisition (ETLA). The theory views the early phases of the language acquisition process as an emergent consequence of the interaction between the infant and its linguistic environment. The newborn infant is considered to be linguistically and phonetically naïve but endowed with the ability to register a wide range of multi-sensory inputs a...
متن کاملDemography and language competition.
Attempts to describe language competition and extinction in a mathematical way have enjoyed increased popularity recently. In this paper I review recent modeling approaches and, based on these findings, propose a model of reaction-diffusion type. I analyze the dynamics of interactions of a population with two monolingual groups and a group that is bilingual in these two languages. The results s...
متن کاملEcological competition favours cooperation in termite societies.
Conflict and competition lie at the heart of the theories of both ecology and sociobiology. Despite this, the interaction between societal conflicts on one hand and ecological competition on the other remains poorly understood. Here, we investigate this interaction in two ecologically similar sympatric termite species, Cryptotermes secundus Hill and Cryptotermes domesticus Haviland. We manipula...
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ژورنال
عنوان ژورنال: Biological Theory
سال: 2008
ISSN: 1555-5542,1555-5550
DOI: 10.1162/biot.2008.3.2.164