facultative

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facultative

empowering but not compelling the doing of an act.
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The prehistoric material thus indicates stronger targeting of the muttonbird (sooty shearwater), the largest available taxa (albatross and penguin) and the facultatively flightless Auckland Island teal (Anas aucklandica), of which three individuals are recorded only in this assemblage.
We present the first climate-related autecological study for the facultatively riparian plant, Glycyrrhiza lepidota (Fabaceae; American licorice), a nitrogen (N)-fixing [C.
The bacterial colonies isolated from solid medium-A were found to be small (< 1mm), translucent and having sulfur deposits in the center, gram negative, rod shaped, facultatively autotrophic, strictly aerobic colorless sulfur bacterium (Figure 1a & b).
However, in certain other species, the axillary meristems of vegetative leaves of this zone sprout facultatively (Fig.
Corethrella appendiculata is facultatively haematophagous and thus females do not require a blood meal to lay their first batch of eggs.
Insectivorous cyprinids commonly feed facultatively on detritus and plant materials during periods of low insect availability (Starrett 1950; Hoyt 1970; Davis & Louder 1971; McNeely 1987; Whitaker 1977; Wilde et al.
Most of the clonally reproduced field crops however, are facultatively sexual reproducers as well.
The strain did not grow on McConkey agar and was facultatively anaerobic.
Similarly, the introductory essay on breeding behavior focuses entirely on the Eurasian brood-parasitic cuckoos, scarcely even mentioning the polyandrous coucals, the facultatively parasitic Coccyzus cuckoos, or the bizarre communal breeding systems of the crotophagine cuckoos (Crotophaga and Guira).
The Hawaiian representatives of this lineage are characterized by variably elongate abdomens and are mostly free-living, at least as adults, although a number have been found to occur, at least facultatively, as kleptoparasites on the webs of other spiders.
Isolation and characterization of a facultatively aerobic bacterium that reductively dehalogenates tetrachloroethene to cis-l,2-dichloroethene.

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