The effects of El Nino on pinniped populations in the eastern Pacific

摘要: Most hypotheses on adaptation stem from comparisons among species. The comparative method offers a way to study questions of ecological mechanisms and evolutionary adaptations, particularly in situations where experimentation is near impossible. Comparisons species areas itself can advance the perspective greatly, but this approach suffers unknown uncontrollable variation regions. Adding another dimension comparison, large disturbance, system extremely illuminating because it acts independently preexisting level spatial and, therefore, simplifies by eliminating confounding variables. Thus, chapters book are interest they not only chronicle impact El Nino (EN) eastern Pacific pinnipeds, also provide new perspectives ecology, life history, evolution these which could otherwise have been obtained.