"contribute in maintaining" is correct and usable in written English.
You can use it when you want to express the idea of actively helping to preserve something. For example, "The volunteers at the animal shelter contribute in maintaining a safe environment for the animals."
In addition, WWT by constructed wetlands will contribute in maintaining biological diversity in the ecosystem, as well as ideally in creating easy accessible recreational and educational meetings between urban citizens and the ecosystem.
In addition, wastewater treatment by constructed wetlands will contribute in maintaining biological diversity in the ecosystem as well as ideally to create easy accessible recreational and educational meetings between urban citizens and the ecosystem.
It is likely that plants amplify and contribute in maintaining the observed effect.
The acetate entering the TCA cycle would provide energy to the cell and would contribute in maintaining low O2 levels.
This mechanism can contribute in maintaining a state of coagulation/inflammation observed in these patients contributing to the pathology of the disease.
In our study, exposure to cross-reacting bacteria may contribute in maintaining a sustained level of functional antibodies up to 4 years after vaccination with the MenA conjugate vaccine in Africa.
The β-decay contributes in maintaining a respectable lepton-to-baryon ratio, Ye, of the core prior to collapse which results in a larger shock energy to produce the explosion.
These observations showed that HDAC4 is a critical component of the DNA damage response pathway that acts through 53BP1, and perhaps contributes in maintaining the G2 cell cycle checkpoint.
Recombination has been reported to occur in AMF [ 31] but at low frequency and thus is likely to contribute significantly in maintaining the unusual high genetic diversity observed frequently within AMF isolates [ 12, 28].
In cancer cells, DNMT1 is responsible for the majority of the DNA-methylation capacity [ 18, 19], and it is a contributing factor in maintaining the abnormal promoter methylation in tumor cells.
In particular, outbreaks of pneumococcal carriage in day care centres cause an amplifying effect that contributes in maintaining circulation of pneumococci in the population.
