干旱区生态环境知识资源中心(Arid): Nutrient dynamics during photodegradation of plant litter in the Sonoran Desert

Arid

DOI	10.1016/j.jaridenv.2018.09.004
	Nutrient dynamics during photodegradation of plant litter in the Sonoran Desert
	Ball, Becky A.1; Christman, Maximilian P.2; Hall, Sharon J.3
通讯作者	Ball, Becky A.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2019
卷号	160 页码:1-10
英文摘要	Arid and semi-arid ecosystems are experiencing increased rates of atmospheric nitrogen (N) deposition, but the ecological fates of excess nutrients in aridlands are unclear given the few studies conducted in deserts compared to mesic ecosystems. Altered decomposition resulting from increased N availability may not be important in arid ecosystems with significant photodegradation, which may be less influenced by nutrient content than biologically -mediated decomposition. Additionally, nutrient dynamics during decomposition have been studied almost exclusively in mesic ecosystems. To understand the potential impacts of N deposition on mass loss and chemical dynamics during aridland decomposition, we assessed N and phosphorus (P) dynamics of decomposing litter in a long-term N + P enrichment experiment in both urban (+N deposition) and outlying areas (-N deposition) of the Sonoran Desert. Litter was decomposed with and without UV radiation for 9 months, measuring mass loss, litter chemistry, and bacterial biomass. UV radiation significantly accelerated mass loss and altered N and P dynamics, and there was an impact of the urban environment and experimental fertilization on nutrient dynamics. Overall, these patterns suggest that the aridland urban environment, where rates of N deposition are elevated, alters nutrient dynamics during decomposition but not the fraction of litter lost to photodegradation.
英文关键词	Photodegradation Decomposition N deposition Sonoran desert Nutrient dynamics Ambrosia deltoidea
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000452575900001
WOS关键词	ULTRAVIOLET-B RADIATION ; NITROGEN DEPOSITION ; ECOSYSTEM RESPONSE ; DECOMPOSITION ; LIGNIN ; CARBON ; PHOSPHORUS ; PATTERNS ; FERTILIZATION ; RELEASE
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216709
作者单位	1.Arizona State Univ West Campus, Sch Math & Nat Sci, 1407 W Thunderbird Rd, Glendale, AZ 85306 USA; 2.Arizona State Univ, Sch Sustainabil, Tempe, AZ USA; 3.Arizona State Univ, Sch Life Sci, Tempe, AZ USA
推荐引用方式 GB/T 7714	Ball, Becky A.,Christman, Maximilian P.,Hall, Sharon J.. Nutrient dynamics during photodegradation of plant litter in the Sonoran Desert[J]. Arizona State University,2019,160:1-10.
APA	Ball, Becky A.,Christman, Maximilian P.,&Hall, Sharon J..(2019).Nutrient dynamics during photodegradation of plant litter in the Sonoran Desert.JOURNAL OF ARID ENVIRONMENTS,160,1-10.
MLA	Ball, Becky A.,et al."Nutrient dynamics during photodegradation of plant litter in the Sonoran Desert".JOURNAL OF ARID ENVIRONMENTS 160(2019):1-10.