ABSTRACT We outline a general scheme for migration that applies across taxa, incorporates the several varieties of migration, and includes all levels of biological organization, from genes to populations. The scheme links the environment, pathways, traits, and genes, and highlights the selective forces that shape and maintain migratory adaptation. We endorse an individual-based behavioral definition of migration that allows an objective distinction between migration and other forms of movement. We recognize migration as an adaptation to resources that fluctuate spatiotemporally either seasonally or less predictably, and note that it is often preemptive. Migration plays a central role in the spatial dynamics of mobile populations, and is largely distinct in both form and function from the within-population mixing arising from postnatal dispersal and from the interpatch movements characteristic of metapopulations. We call for more interaction between biologists studying different taxa and different forms of movement, and between behaviorists and population ecologists.

Hugh Dingle

V. Alistair Drake

BioScience

BIOSCIENCE 包括关于研究成果和技术的文章、生物学教育的进步、关于生物学最新前沿的专业撰写的专题文章、专业问题的讨论、书评、关于 AIBS 的新闻、政策专栏（华盛顿观察）和教育专栏（关注教育）。圆桌会议、论坛和观点文章提供意见领袖的观点并邀请进一步评论。

The journal BioScience includes articles on research findings and technologies, advancements in biology education, specialized articles on the latest frontiers in biology, discussions on professional issues, book reviews, news about AIBS, a policy column (Washington Observations), and an education column (Focus on Education). Roundtable discussions, forums, and opinion pieces provide insights from thought leaders and invite further commentary.

《BioScience》期刊涵盖了研究成果和技术的文章、生物学教育的进展、关于生物学前沿的专题文章、专业问题的讨论、书评、AIBS的新闻、政策专栏（华盛顿观察）和教育专栏（关注教育）。此外，期刊还包括圆桌会议、论坛和观点文章，提供意见领袖的见解，并邀请进一步的评论。

Category	Quartile
生物学	1
生物学, 生物学	1

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