Ecology of the endangered species Solidago shortii. VII. Survivorship and flowering, and comparison with common, geographically-widespread Solidago species
Jl. Walck et al., Ecology of the endangered species Solidago shortii. VII. Survivorship and flowering, and comparison with common, geographically-widespread Solidago species, J TORREY B, 126(2), 1999, pp. 124-132
Ecology of the endangered species Solidago shortii. VII. Survivorship and f
lowering, and comparison with common, geographically-widespread Solidago sp
ecies. Survivorship and flowering of plants at three population sites and v
ernalization and photoperiod requirements for flowering were determined for
Solidago shortii (Asteraceac), a federal-endangered species endemic to nor
theastern Kentucky. Of 1344 seedlings marked at site 12 in May 1989, ca. 58
4e and 2% of the plants were alive at the end of their first and ninth grow
ing seasons, respectively. None of the marked plants at this site flowered
in 1989 or in 1990; only 1-13% of those alive each year flowered in 1991-19
97. All of the 29 and 25 seedlings marked at sites 2 and 11, respectively,
were dead by the end of their fifth growing season; none of them flowered.
Survivorship curves differed significantly among and within sites. Solidago
shortii does not require vernalization to fewer, and it is a facultative s
hort-day plant. Survivorship and flowering requirements of S. shortii do no
t differ from those reported in the literature for common, geographically-w
idespread Solidago species.