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Memorias de investigación
Research Publications in journals:
Evaluation of reproductive success and conservation strategies for Senecio coincyi (Asteraceae), a narrow and threatened species.
Year:2012
Research Areas
  • Botany
Information
Abstract
Senecio coincyi is a threatened endemic plant of central western Spain, with a very narrow extent of occurrence. The reproductive success and germination behaviour of this species were studied. The area of occupancy, habitat types and size of 13 known subpopulations of S. coincyi were evaluated. The number of individuals that form all these subpopulations was counted. In addition, the number of flowers and cypselas per fruit head and the number of fruit heads per individual plant were recorded in a subset of subpopulations. Germination tests were carried out to evaluate the effect of temperature and light regimes on, and possible intraspecific variation in, cypsela germination. Cypselas reached very high germination percentages (90?100%) from 15°C to 30°C. However, the germination decreased (19%) at 10°C. The light conditions assayed (16-h light photoperiod and complete darkness) did not significantly affect cypsela germination. In general, there was no intraspecific variability in germination patterns of S. coincyi cypselas. Livestock is the most important factor that can be a threat for this species. S. coincyi showed high reproductive success and, therefore, its conservation problems are not due to agents related to its reproduction, but rather to other factors such as alteration of its habitat caused by the presence of livestock.
International
Si
JCR
Si
Title
Australian Journal of Botany
ISBN
0067-1924
Impact factor JCR
1,111
Impact info
Volume
60
Journal number
From page
517
To page
525
Month
SIN MES
Ranking
Participants
  • Autor: Felipe Martinez Garcia (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Historia y dinámica del paisaje vegetal
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