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Direct seeding of 16 Brazilian savanna trees: responses to seed burial, mulching and an invasive grass

Aims: To address whether seed and seedling functional traits have a significant effect on germination rates and seedling survival in direct-seeding restoration efforts. We tested the hypotheses that: (1) seed burial only favours the emergence of round seeds; and (2) straw mulching improves soil moisture and prevents the emergence of the invasive grass Urochloa decumbens, promoting the establishment of native tree seedlings.