( ( ( Regional ( nutrient surpluses ) ) ( as ( ( a result ) ( of ( excessive ( feed imports ) ) ) ) ) ) ( ( ( are ( ( important causes ) ( of ( water eutrophication ) ) ) ) ( ( ( ( ( in ( parts ( of ( ( ( northwestern Europe ) , ) ( the USA ) ) ) ) ) , ) and ) increasingly ) ( in ( East Asia ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Regional) (NN nutrient) (NNS surpluses)) (PP (IN as) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (JJ excessive) (NN feed) (NNS imports)))))) (VP (VBP are) (NP (NP (JJ important) (NNS causes)) (PP (IN of) (NP (NN water) (NN eutrophication)))) (PP (PP (IN in) (NP (NP (NNS parts)) (PP (IN of) (NP (NP (NNP northwestern) (NNP Europe)) (, ,) (NP (DT the) (NNP USA)))))) (, ,) (CC and) (ADVP (RB increasingly)) (PP (IN in) (NP (NNP East) (NNP Asia))))) (. .)))
Regional nutrient surpluses as a result of excessive feed imports are important causes of water eutrophication in parts of northwestern Europe, the USA, and increasingly in East Asia.
(ROOT (S (NP (NP (DT An) (NN excess)) (PP (IN of) (NP (NP (NNS fertilizers)) (CC and) (NP (JJ other) (NNS nutrients))))) (VP (VBZ causes) (ADJP (JJ eutrophication) (S (VP (TO to) (VP (VB occur)))))) (. .)))