| 11. | It is a pioneer species, growing on bare outcrops unoccupied by any other plants.
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| 12. | Plants such as rushes grow once the mud has been vegetated by the pioneer species.
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| 13. | It is a pioneer species sometimes used in revegetation efforts in riparian habitat in Brazil.
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| 14. | Ragweed ( and locusts ) are called pioneer species.
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| 15. | The plant is a pioneer species found in dry areas of California, Arizona, and Mexico.
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| 16. | The plantings have been mainly of hardy pioneer species best able to withstand the rigorous conditions.
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| 17. | Pioneer species are the first organisms that colonise an area, of which lithoseres are an example.
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| 18. | "Cordyline australis " is a light-demanding pioneer species, and seedlings die when overtopped by other trees.
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| 19. | Today one comes across both pioneer species like European Rowans and different sorts of shrubs there.
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| 20. | It is a pioneer species in rough terrain.
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