Seed-crop size and eruptions of North American boreal seed-eating birds
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چکیده
منابع مشابه
Seed-crop size and eruptions of North American boreal seed-eating birds
1. Eruptions occur when a species appears in unusually high densities within and often outside of its normal range. We used 30 years of Christmas Bird Counts combined with cone/seed-crop data on boreal coniferous trees, breeding bird surveys, and weather records to test correlates of winter eruptions by 11 species of primarily boreal North American seed-eating birds. 2. Eruptions of six species...
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Meta-analysis of seed priming effects on seed germination, seedling emergence and crop yield: Iranian studies
A large body of research has documented the effect of seed priming ongermination, emergence and crop yield. In such research, seed priming has beenfound to have a positive, negative or no effect. Meta-analysis can help tosummarize and interpret a collection of experiments. The aim of this study was toconduct a meta-analysis to synthesize published data from studies addressing theeffect of seed ...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2001
ISSN: 0021-8790
DOI: 10.1046/j.1365-2656.2001.00516.x