Recent
work indicates that N additions can alter the diversity
and composition of soil microbial communities
though it remains unclear if microbial
community shifts are predictable and consistent across
ecosystems as few experimental studies have examined
responses across a wide range of soil or ecosystem
types. Additionally, with field-based studies it is difficult
to determine if microbial community shifts are a
direct result of the N addition or an indirect result of
changes to plant communities and their C inputs to
soils