气候变化领域集成服务门户(CCPortal): Long-term data reveal that grazer density mediates climatic stress in salt marshes

CCPortal

DOI	10.1002/ecy.4323
	Long-term data reveal that grazer density mediates climatic stress in salt marshes
	Smith, Carter S.; Zhang, Y. Stacy; Hensel, Marc J. S.; Pennings, Steven C.; Silliman, Brian R.
发表日期	2024
ISSN	0012-9658
EISSN	1939-9170
英文摘要	Understanding how climate and local stressors interact is paramount for predicting future ecosystem structure. The effects of multiple stressors are often examined in small-scale and short-term field experiments, limiting understanding of the spatial and temporal generality of the findings. Using a 22-year observational dataset of plant and grazer abundance in a southeastern US salt marsh, we analyzed how changes in drought and grazer density combined to affect plant biomass. We found: (1) increased drought severity and higher snail density both correlated with lower plant biomass; (2) drought and snail effects interacted additively; and, (3) snail effects had a threshold, with additive top-down effects only occurring when snails were present at high densities. These results suggest that the emergence of multiple stressor effects can be density dependent, and they validate short-term experimental evidence that consumers can augment environmental stress. These findings have important implications for predicting future ecosystem structure and managing natural ecosystems.
英文关键词	climate change; drought; grazers; multiple stressor effects; plant-grazer interactions; salt marsh; top-down control
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001227709300001
来源期刊	ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292420
作者单位	Duke University; North Carolina State University; William & Mary; Virginia Institute of Marine Science; State University System of Florida; University of Florida; University of Houston System; University of Houston
推荐引用方式 GB/T 7714	Smith, Carter S.,Zhang, Y. Stacy,Hensel, Marc J. S.,et al. Long-term data reveal that grazer density mediates climatic stress in salt marshes[J],2024.
APA	Smith, Carter S.,Zhang, Y. Stacy,Hensel, Marc J. S.,Pennings, Steven C.,&Silliman, Brian R..(2024).Long-term data reveal that grazer density mediates climatic stress in salt marshes.ECOLOGY.
MLA	Smith, Carter S.,et al."Long-term data reveal that grazer density mediates climatic stress in salt marshes".ECOLOGY (2024).