They assumed a value -- unspecified -- for non-commercial species, and in doing so rendered the warming news a bit less rosy.
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	2:nsubj|16:nsubj	_
2	assumed	assume	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	4:det	_
4	value	value	NOUN	NN	Number=Sing	2	obj	2:obj	_
5	--	--	PUNCT	,	_	4	punct	4:punct	_
6	unspecified	unspecified	ADJ	JJ	Degree=Pos	4	amod	4:amod	_
7	--	--	PUNCT	,	_	4	punct	4:punct	_
8	for	for	ADP	IN	_	10	case	10:case	_
9	non-commercial	non-commercial	ADJ	JJ	Degree=Pos	10	amod	10:amod	_
10	species	species	NOUN	NNS	Number=Plur	4	nmod	4:nmod:for	SpaceAfter=No
11	,	,	PUNCT	,	_	16	punct	16:punct	_
12	and	and	CCONJ	CC	_	16	cc	16:cc	_
13	in	in	SCONJ	IN	_	14	mark	14:mark	_
14	doing	do	VERB	VBG	VerbForm=Ger	16	advcl	16:advcl:in	_
15	so	so	ADV	RB	_	14	advmod	14:advmod	_
16	rendered	render	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	2	conj	2:conj:and	_
17	the	the	DET	DT	Definite=Def|PronType=Art	19	det	19:det	_
18	warming	warming	NOUN	NN	Number=Sing	19	compound	19:compound	_
19	news	news	NOUN	NN	Number=Sing	16	obj	16:obj|23:nsubj:xsubj	_
20	a	a	DET	DT	Definite=Ind|PronType=Art	21	det	21:det	_
21	bit	bit	NOUN	NN	Number=Sing	22	obl:npmod	22:obl:npmod	_
22	less	less	ADV	RBR	Degree=Cmp	23	advmod	23:advmod	_
23	rosy	rosy	ADJ	JJ	Degree=Pos	16	xcomp	16:xcomp	SpaceAfter=No
24	.	.	PUNCT	.	_	2	punct	2:punct	_
