It has a narrow adaptation within the alpine zone [ 10].
Despite its higher fiber quality, however, the narrow adaptation range and low yield of G. barbadense limit its cultivation.
T. occidentale is a predominantly self-fertile, strictly maritime species with a very narrow adaptation, occurring only very close to the sea in confined habitats on the gulf-stream coasts of Europe [ 9]. T. pallescens is a predominantly cross-pollinating but self-fertile alpine clover, presently occurring only above 1,800 meters in Europe.
Besides its medicinal importance, S. kakudensis is still unexplored due to inadequate healthy plant materials, narrow environmental adaptation, and risk of extinction.
Because of the narrow co-adaptation between a rabies strain and its usual normal host, spill overs into other species have a very low probability in relation to establishing a new rabies cycle.
Velvet worms have a remarkable ability to squeeze themselves through narrow passages, an adaptation that permits them to find shelters of satisfactory humidity and safety.
Nodosaurids like Sauropelta had narrow snouts, an adaptation seen today in animals that are selective browsers as opposed to the wide muzzles of grazers.
As previously reported, the average bumps were larger and slower at dim intensities and smaller and faster at brighter illumination, whereas the bump latency distributions, in even a weakly light-adapted state, were narrower than following prolonged dark adaptation, but then changed little during adaptation to further increasing background intensity [ 8].
Narrower leaves are an adaptation to hotter, drier climates with broader leaves being more susceptible to extremes in temperature [ 7].
Previous inclusion of the Inu species in Luciogobius is based on the shared absence of the first dorsal fin and scales [ 13], which likely reflects parallel reduction associated with adaptation to narrow habitats (e. g., rocky shores, gravel beaches).
