Dispersal Classes

 

 

Call:    mosaic@dispclass

Definition: Age- or stage-classes of the species that are capable of dispersal.  

Possible values: cat., factor

  • Adult – dispersal stage is an individual that has reached maturity, we include sub-adults into this category
  • Egg – dispersal stage is a vessel within which an embryo develops and is expelled by an adult allowing for dispersal
  • Fertile material – dispersal stage is a part of an individual, or in some cases a complete individual, that contains fertile material (e.g., the alga Fucus vesiculosus; detached floating material/individual that contains gametes)
  • Gamete – dispersal stage is the reproductive cell not within a vessel
  • Juvenile – dispersal stage is an individual that has not reached maturity
  • Larval – dispersal in a specific juvenile stage restricted to non-mammal species, species can have multiple larval stages
  • Seed – dispersal stage is fertilized, specific to plant species and, in our definition, references seeds and/or fruits that are dispersed
  • Sperm – dispersal stage is the male gamete
  • Spore – dispersal stage is a single cell that only contains half of the chromosome of the adult, can produce eggs or sperm
  • Sporophyte – dispersal stage is a nonsexual phase of a species producing two diploid spores
  • Zoospore – dispersal stage is a motile asexual spore
  • Zygote – dispersal stage is a fused male and female gamete
  • Adult and Juvenile – dispersal stage can be both the adult and juvenile stage
  • Egg and Larval – dispersal stage can be both the egg and larval stage
  • Gamete and Spore – dispersal stage can be both the gamete and spore
  • Zoospore, Sperm and Sporophyte – dispersal stage can be a zoospore, sperm or sporophyte
  • NF – dispersal class reviewed and inconclusive (no affirmative records found upon review)
  • NDY – dispersal class unknown/not yet evaluated
  • NA – not applicable

Usage Notes: Dispersal can occur in more than one age- or stage- class, where this occurs it is noted as such within the database

Additional Information: NA

Source Data: NA

                                                    

Last updated: 24 January 2022