The present day range of Ascinara is much less than what it used to be, as a result of both climatic changes and increased competition. In New Zealand in particular, the range of A. lucida has decreased. This is not a result of a pollen limitation, as Ascarina produces enough pollen to spread far beyond its habitable range, and even cross water to islands near New Zealand, but rather its vulnerability to both drought and frost.
The current range of Ascinara is considerably smaller than it once was, due to both climatic alterations and heightened competition. Specifically in New Zealand, the range of A. lucida has shrunk. This decline is not caused by pollen scarcity, as Ascarina generates sufficient pollen that can spread far beyond its suitable habitat and even reach nearby islands across water, but rather because it is vulnerable to drought and frost.