干旱区生态环境知识资源中心(Arid): Biotic vs abiotic controls on temporal sensitivity of primary production to precipitation across North American drylands

Arid

DOI	10.1111/nph.17543
	Biotic vs abiotic controls on temporal sensitivity of primary production to precipitation across North American drylands
	Felton, Andrew J.; Shriver, Robert K.; Bradford, John B.; Suding, Katharine N.; Allred, Brady W.; Adler, Peter B.
通讯作者	Felton, AJ (corresponding author), Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA. ; Felton, AJ (corresponding author), Utah State Univ, Ecolo Ctr, Logan, UT 84322 USA.
来源期刊	NEW PHYTOLOGIST
ISSN	0028-646X
EISSN	1469-8137
出版年	2021
卷号	231 期号:6 页码:2150-2161
英文摘要	Dryland net primary productivity (NPP) is sensitive to temporal variation in precipitation (PPT), but the magnitude of this 'temporal sensitivity' varies spatially. Hypotheses for spatial variation in temporal sensitivity have often emphasized abiotic factors, such as moisture limitation, while overlooking biotic factors, such as vegetation structure. We tested these hypotheses using spatiotemporal models fit to remote-sensing data sets to assess how vegetation structure and climate influence temporal sensitivity across five dryland ecoregions of the western USA. Temporal sensitivity was higher in locations and ecoregions dominated by herbaceous vegetation. By contrast, much less spatial variation in temporal sensitivity was explained by mean annual PPT. In fact, ecoregion-specific models showed inconsistent associations of sensitivity and PPT; whereas sensitivity decreased with increasing mean annual PPT in most ecoregions, it increased with mean annual PPT in the most arid ecoregion, the hot deserts. The strong, positive influence of herbaceous vegetation on temporal sensitivity indicates that herbaceous-dominated drylands will be particularly sensitive to future increases in precipitation variability and that dramatic changes in cover type caused by invasions or shrub encroachment will lead to changes in dryland NPP dynamics, perhaps independent of changes in precipitation.
英文关键词	climate sensitivity dryland ecosystems net primary productivity precipitation spatial-temporal relationships
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000669022700001
WOS关键词	INTERANNUAL VARIABILITY ; VEGETATION STRUCTURE ; NITROGEN LIMITATION ; RAINFALL EVENTS ; SOIL-MOISTURE ; ECOSYSTEM ; GRASSLAND ; CLIMATE ; WATER ; RESPONSES
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352412
作者单位	[Felton, Andrew J.; Shriver, Robert K.; Adler, Peter B.] Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA; [Felton, Andrew J.; Shriver, Robert K.; Adler, Peter B.] Utah State Univ, Ecolo Ctr, Logan, UT 84322 USA; [Shriver, Robert K.; Bradford, John B.] US Geol Survey, Southwest Biol Sci Ctr, Flagstaff, AZ 86001 USA; [Shriver, Robert K.] Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA; [Suding, Katharine N.] Univ Colorado, Inst Arctic & Alpine Res, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA; [Allred, Brady W.] Univ Montana, WA Franke Coll Forestry & Conservat, Missoula, MT 59812 USA
推荐引用方式 GB/T 7714	Felton, Andrew J.,Shriver, Robert K.,Bradford, John B.,et al. Biotic vs abiotic controls on temporal sensitivity of primary production to precipitation across North American drylands[J]. United States Geological Survey,2021,231(6):2150-2161.
APA	Felton, Andrew J.,Shriver, Robert K.,Bradford, John B.,Suding, Katharine N.,Allred, Brady W.,&Adler, Peter B..(2021).Biotic vs abiotic controls on temporal sensitivity of primary production to precipitation across North American drylands.NEW PHYTOLOGIST,231(6),2150-2161.
MLA	Felton, Andrew J.,et al."Biotic vs abiotic controls on temporal sensitivity of primary production to precipitation across North American drylands".NEW PHYTOLOGIST 231.6(2021):2150-2161.