Arid
DOI10.1111/1365-2745.12936
Animals alter precipitation legacies: Trophic and ecosystem engineering effects on plant community temporal dynamics
Grinath, Joshua B.1,2; Deguines, Nicolas3,4; Chesnut, John W.; Prugh, Laura R.4; Brashares, Justin S.3; Suding, Katharine N.2,5
通讯作者Grinath, Joshua B.
来源期刊JOURNAL OF ECOLOGY
ISSN0022-0477
EISSN1365-2745
出版年2018
卷号106期号:4页码:1454-1469
英文摘要

1. Multiyear precipitation legacies can have stronger effects on plant community composition than rainfall in the current growing season, but variation in the magnitude of these effects is not fully understood. Direct interactions between plants and animals, such as herbivory, and indirect interactions, such as ecosystem engineering (via changes in the physical environment), may influence precipitation legacies by altering mechanisms of lagged effects. However, the role of direct and indirect plant-animal interactions in determining the strength of precipitation legacies remains largely unexplored.


2. Here, we investigated effects of current growing season rainfall and precipitation legacies on grassland composition, and the influence of herbivory and ecosystem engineering interactions on these temporal dynamics. From 2009 to 2014, a period spanning high and low rainfall, we recorded plant cover in kangaroo rat exclosures and paired control plots that included both burrow and inter-burrow areas. We used linear mixed effects modelling and analysis of community dissimilarities to evaluate plant composition responses to current and previous growing season rainfall and kangaroo rat herbivory (presence of seed foraging) and ecosystem engineering (burrowing).


3. We found that community composition was more strongly affected by precipitation legacies than by current growing season rainfall. Greater precipitation in the previous growing season enhanced grass cover and reduced forb and legume cover. Kangaroo rat trophic and engineering interactions had counteracting effects on these legacies. While burrowing increased grass cover and thereby amplified the effects of previous growing season rainfall on community composition, legacies were suppressed by the presence of kangaroo rat foraging, which decreased grass cover. Further analysis revealed that kangaroo rat foraging and burrowing had conflicting effects on residual plant biomass prior to the growing season, suggesting that precipitation legacies were influenced by altered litter dynamics.


4. Synthesis. Our study demonstrates that animals can impact the strength of precipitation legacies through direct and indirect interactions with the plant species that drive lag effects. The influence of multiple types of plant-animal interactions on precipitation legacies may be important to consider for ecosystem management and when generating predictions of community composition and productivity in future ecosystems.


英文关键词determinants of plant community diversity and structure endangered species functional composition granivory invasive grasses lag effects soil disturbance species composition
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000435444700011
WOS关键词GIANT KANGAROO RAT ; CALIFORNIA ANNUAL GRASSLAND ; DESERT-GRASSLAND ; DIPODOMYS-INGENS ; POCKET GOPHERS ; LONG-TERM ; EXOTIC GRASSES ; UNITED-STATES ; FOOD WEBS ; VEGETATION
WOS类目Plant Sciences ; Ecology
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
来源机构University of California, Berkeley
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/210825
作者单位1.Middle Tennessee State Univ, Dept Biol, Murfreesboro, TN 37130 USA;
2.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA;
3.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA;
4.Univ Washington, Sch Environm & Forest Sci, Seattle, WA 98195 USA;
5.Univ Colorado, Ecol & Evolutionary Biol, Boulder, CO USA
推荐引用方式
GB/T 7714
Grinath, Joshua B.,Deguines, Nicolas,Chesnut, John W.,et al. Animals alter precipitation legacies: Trophic and ecosystem engineering effects on plant community temporal dynamics[J]. University of California, Berkeley,2018,106(4):1454-1469.
APA Grinath, Joshua B.,Deguines, Nicolas,Chesnut, John W.,Prugh, Laura R.,Brashares, Justin S.,&Suding, Katharine N..(2018).Animals alter precipitation legacies: Trophic and ecosystem engineering effects on plant community temporal dynamics.JOURNAL OF ECOLOGY,106(4),1454-1469.
MLA Grinath, Joshua B.,et al."Animals alter precipitation legacies: Trophic and ecosystem engineering effects on plant community temporal dynamics".JOURNAL OF ECOLOGY 106.4(2018):1454-1469.
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