Population ecology of halophyte seeds

摘要: Some aspects of the population biology halophytes are considered in this review. Persistent seed banks have been reported for a number inland- and coastal-salt marsh plant communities. Seeds perennial grasses often under-represented, while annuals some forbs may be over-represented bank. The persistent bank annual appears adaptive, provides multiple germination opportunities which prevent local extinction when environmental stress increases. Somatic polymorphism mechanism by parent plants can respond to changing environments partitioning their resources into reproductive units distinct responses. Parental effects influence either morphology and/or physiological requirements seeds they exposed stress. A prolonged period provide populations with numerous establish seedling cohorts. Early cohorts will selective advantage under moderate conditions because mortality low survive until maturity. However, fluctuations salinity levels tidal activity cause high early salt habitats, providing later an opportunity establishment. Resource allocation structures is related size, itself affected both abiotic biotic factors. Larger were found produce more than smaller population, but mean weight was greater small plants.