( ( ( Seasonal ( plant uptake ) ) ( of nitrogen ) ) ( ( is ( ( assessed ( through ( ( elemental analysis ) ( of ( ( ( ( ( carbon ( , ( nitrogen ( , ( and hydrogen ) ) ) ) ) ( -LRB- ( CHN -RRB- ) ) ) ( of ( representative ( plant tissue ) ) ) ) and ) ( measures ( of ( ( vegetation biomass ) ( in ( each ( wetland cell ) ) ) ) ) ) ) ) ) ) ) ( throughout ( the ( growing season ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Seasonal) (NN plant) (NN uptake)) (PP (IN of) (NP (NN nitrogen)))) (VP (VBZ is) (VP (VBN assessed) (PP (IN through) (NP (NP (JJ elemental) (NN analysis)) (PP (IN of) (NP (NP (NP (NP (NN carbon) (, ,) (NN nitrogen) (, ,) (CC and) (NN hydrogen)) (PRN (-LRB- -LRB-) (NP (NNP CHN)) (-RRB- -RRB-))) (PP (IN of) (NP (JJ representative) (NN plant) (NN tissue)))) (CC and) (NP (NP (NNS measures)) (PP (IN of) (NP (NP (JJ vegetation) (NNS biomass)) (PP (IN in) (NP (DT each) (JJ wetland) (NN cell)))))))))) (PP (IN throughout) (NP (DT the) (VBG growing) (NN season))))) (. .)))
Seasonal plant uptake of nitrogen is assessed through elemental analysis of carbon, nitrogen, and hydrogen (CHN) of representative plant tissue and measures of vegetation biomass in each wetland cell throughout the growing season.
(ROOT (S (NP (RBS Most) (JJ growing) (NN plant) (NNS cells)) (VP (VBP expand) (PP (IN through) (NP (NN water) (NN uptake)))) (. .)))