( ( While ( ( these reductions ) ( ( are primarily ) ( driven ( by ( reduced precipitation ) ) ) ) ) ) ( , ( ( higher temperatures ) ( also ( ( ( contribute ( to ( ( reduced ( water yield ) ) ( in ( these regions ) ) ) ) ) ( by ( increasing ( ( ET , ) ( which ( , ( ( in turn ) ( , ( reduces ( ( ( lateral flow ) and ) ( groundwater recharge ) ) ) ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (SBAR (IN While) (S (NP (DT these) (NNS reductions)) (VP (VBP are) (ADVP (RB primarily)) (VP (VBN driven) (PP (IN by) (NP (VBN reduced) (NN precipitation))))))) (, ,) (NP (JJR higher) (NNS temperatures)) (ADVP (RB also)) (VP (VBP contribute) (PP (TO to) (NP (NP (VBN reduced) (NN water) (NN yield)) (PP (IN in) (NP (DT these) (NNS regions))))) (PP (IN by) (S (VP (VBG increasing) (NP (NP (NNP ET)) (, ,) (SBAR (WHNP (WDT which)) (S (, ,) (PP (IN in) (NP (NN turn))) (, ,) (VP (VBZ reduces) (NP (NP (JJ lateral) (NN flow)) (CC and) (NP (NN groundwater) (NN recharge))))))))))) (. .)))
While these reductions are primarily driven by reduced precipitation, higher temperatures also contribute to reduced water yield in these regions by increasing ET , which, in turn, reduces lateral flow and groundwater recharge.
(ROOT (S (NP (NNP Groundwater)) (ADVP (RB primarily)) (VP (VBZ comes) (PP (IN from) (NP (NN precipitation)))) (. .)))