( ( Addition ( of ( ( large amounts ) ( of ( ( organic matter ) ( to ( the soil ) ) ) ) ) ) ) ( ( ( may also ) ( lead ( to ( ( a phenomenon ) ( known ( as ( `` ( ( ( ( nitrate depression ) , ) '' ) ( where ( ( the ( soluble nitrogen ) ) ( ( gets ( incorporated ( in ( ( the bodies ) ( of ( soil decomposers ) ) ) ) ) ) ( until ( ( ( the carbon ) ( of ( the ( organic matter ) ) ) ) ( is decomposed ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Addition)) (PP (IN of) (NP (NP (JJ large) (NNS amounts)) (PP (IN of) (NP (NP (JJ organic) (NN matter)) (PP (TO to) (NP (DT the) (NN soil)))))))) (VP (MD may) (ADVP (RB also)) (VP (VB lead) (PP (TO to) (NP (NP (DT a) (NN phenomenon)) (VP (VBN known) (PP (IN as) (NP (`` ``) (NP (JJ nitrate) (NN depression)) (, ,) ('' '') (SBAR (WHADVP (WRB where)) (S (NP (DT the) (JJ soluble) (NN nitrogen)) (VP (VBZ gets) (ADJP (JJ incorporated) (PP (IN in) (NP (NP (DT the) (NNS bodies)) (PP (IN of) (NP (NN soil) (NNS decomposers)))))) (SBAR (IN until) (S (NP (NP (DT the) (NN carbon)) (PP (IN of) (NP (DT the) (JJ organic) (NN matter)))) (VP (VBZ is) (VP (VBN decomposed))))))))))))))) (. .)))
Addition of large amounts of organic matter to the soil may also lead to a phenomenon known as &quot;nitrate depression,&quot; where the soluble nitrogen gets incorporated in the bodies of soil decomposers until the carbon of the organic matter is decomposed.
(ROOT (S (NP (NP (NNS Sediments)) (PP (IN in) (NP (JJ oligotrophic) (NNS lakes)))) (VP (VBP contain) (NP (NP (JJ large) (NNS amounts)) (PP (IN of) (NP (JJ decomposable) (JJ organic) (NN matter))))) (. .)))