Seed size variation: magnitude, distribution, and ecological correlates
نویسندگان
چکیده
منابع مشابه
Ecological Correlates of Group-Size Variation in a Resource-Defense Ungulate, the Sedentary Guanaco
For large herbivores, predation-risk, habitat structure and population density are often reported as major determinants of group size variation within and between species. However, whether the underlying causes of these relationships imply an ecological adaptation or are the result of a purely mechanistic process in which fusion and fragmentation events only depend on the rate of group meeting,...
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Magnitude is a critical feature of outcomes. In the present study, two event-related potential (ERP) experiments were implemented to explore the neural substrates of outcome magnitude processing. In Experiment 1, we used an adapted gambling paradigm where physical area symbols were set to represent potential relative outcome magnitudes in order to exclude the possibility that the participants w...
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The ultimate cause of genome size (GS) evolution in eukaryotes remains a major and unresolved puzzle in evolutionary biology. Large-scale comparative studies have failed to find consistent correlations between GS and organismal properties, resulting in the 'C-value paradox'. Current hypotheses for the evolution of GS are based either on the balance between mutational events and drift or on natu...
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I. M. Pérez-Ramos ([email protected]), I. R. Urbieta, and T. Marañón, IRNAS, CSIC, P.O. Box 1052, ES-41080 Sevilla, Spain. Present address for IMPR: Centre d’Ecologie Fonctionnelle et Evolutive, CNRS, 1919 Route de Mende, FR-34293 Montpellier 5, France. M. A. Zavala and present address for IRU: Depto de Ecologı́a, Edificio de Ciencias, Univ. de Alcalá, Alcalá de Henares, ES-28871 ...
متن کاملThe effect of twig architecture and seed number on seed size variation in subtropical woody species.
This study aims to determine the effect of twig (current year shoot) size on seed size variation and to test whether a seed size vs number tradeoff occurs for the twigs of subtropical broad-leaved species. Fruit-bearing twigs were sampled for 55 woody species (including 33 evergreen and 22 deciduous dicot species) from a southwest Chinese forest. Twig size, fruit size and number, and seed size ...
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ژورنال
عنوان ژورنال: Evolutionary Ecology
سال: 1988
ISSN: 0269-7653,1573-8477
DOI: 10.1007/bf02067274