Geographic Elements of the Marine Flora of the North Pacific Ocean

Publisher Website
Google Scholar
Abstract
The author selects as geographic elements various groups of the sea grasses and of the marine algae, as benthos or attached forms, established in certain areas and having certain discontinuous geographic relations. Among the sea grasses are to be found a series of vicarious pairs of species, closely related, but occupying areas latitudinally or antipodally discontinuous. Attention is thereby directed to certain groups of spp. of the N. Indo-Pacific area which have close relationship to groups of the Mediterranean or to groups of the Caribbean area; the same is true of S. Pacific groups. Attention, thereby, seems directed to the role of the ancient and extended Mediterranean, or "Tethys," as possible area of origin, with the ocean, "Oceanus," as distributor. Something of the same suggestion comes from the tropical marine algae, but the temperate forms of both the sea grasses (Zosteraceae in particular) and of the marine algae (e.g., Macrocystis) may have originated in extratropical Tethys.

This publication has 0 references indexed in Scilit: