opportunistic species การใช้

Although, as an opportunistic species, it can tolerate some disturbance, continued trampling along forest trails due to recreation poses a threat.
Hairy milkweed can be an aggressive, opportunistic species, capable of overtaking a suitable sprouting location and killing the plants it grows upon.
Its role as a species of mature forests has led it to be replaced by more opportunistic species in areas where forests are cut over.
It is an opportunistic species tolerant of stressful conditions, and often found in polluted waters ( sewer discharges, hydrocarbons, metals . . . ) where it out-competes less tolerant species.
One factor was product of aridification, other groups responded to favorable climatic periods and expanded across the available habitat, occurring as opportunistic species across wide distribution; other groups diverged over long periods within isolated areas.