Xerosere is a plant succession that is limited by water availability. It includes the different stages in a xerarch succession. Xerarch succession of ecological communities originated in extremely dry situation such as sand deserts, sand dunes, salt deserts, rock deserts etc.
Dulce, pronounced: (Dool-se). It is of Latin origin, and the meaning of Dulce is candy and sweet. Dulce MarÃ­a, Dulce Marie, and Dulce Candy are popular given names. Dulce variant forms: Dulci, Dulcie, Dulcinea, Dulcina, Dulcinda.
Duru's definition: The set of all points in a plane that are the same distance away from some given point, which we call the center. Oliver's definition: The set of all points in 3D space that are the same distance from a center point. Carlos's definition: A perfectly round shape. Your definition needs to be much more precise.