Currently, we have little empirical or experimental evidence concerning the competitive relationships, particularly of plants, in the more species-rich forest ecosystems.
(we; have; little empirical or experimental evidence concerning the competitive relationships, particularly of plants, in the more species-rich forest ecosystems; T:Currently) (little empirical or experimental evidence; concerning; the competitive relationships, particularly of plants, in the more species-rich forest ecosystems)
we little empirical or experimental evidence
have concerning
little empirical or experimental evidence concerning the competitive relationships, particularly of plants, in the more species-rich forest ecosystems T:Currently
the competitive relationships, particularly of plants, in the more species-rich forest ecosystems