They are the opposite of pioneer species , also known as ruderal , fugitive , opportunistic or R - selected species , in the sense that climax species are good competitors but poor colonizers , .
Pioneer species are good colonizers but poor competitors .
They are the opposite of pioneer species , also known as ruderal , fugitive , opportunistic or R - selected species , in the sense that climax species are good competitors but poor colonizers , whereas pioneer species are good colonizers but poor competitors .