Life cycle and masting of a recovering keystone indicator species under climate fluctuation

作     者：Qinfeng Guo Stanley J.Zarnoch Xiongwen Chen Dale G.Brockway 

作者机构：USDA FS Eastern Forest Environmental Threat Assessment Center3041 Cornwallis RoadResearch Triangle ParkNorth Carolina 27709 USA USDA Forest ServiceSouthern Research StationClemson UniversityLehotsky HallClemsonSouth Carolina 29634 USA Department of Biological and Environmental SciencesAlabama A&M UniversityP.O.Box 1927NormalAlabama 35762 USA USDA Forest ServiceSouthern Research Station521 Devall DriveAuburnAlabama 36849 USA 

出 版 物：《Ecosystem Health and Sustainability》 (生态系统健康与可持续性（英文）)

年 卷 期：2016年第2卷第6期

页      面：16-27页

学科分类：0710[理学-生物学] 0202[经济学-应用经济学] 02[经济学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 020205[经济学-产业经济学] 0713[理学-生态学] 

基　　金：supported by USDA National Institute of Food and Agriculture McIntire Stennis project(1008643) 

主　　题：idiosyncrasy life history Moran effect Pinus palustris regeneration sustainability synchrony time lag wavelet analysis 

摘      要：Ecosystem health and sustainability,to a large degree,depend on the performance of keystone or dominant *** role of climate on population dynamics of such species has been extensively examined,especially for health indicator *** the life-cycle processes and response lags for many species could complicate efforts to detect clear climate *** pine(Pinus palustris Mill.)is such a keystone tree species in the southeastern United States that has declined in both abundance and distribu-tion during the past *** research efforts on multiple fronts,the mechanisms behind the large spatial and temporal fluctuations in cone production that affects its regeneration are largely *** the basis of long-term(15-56 yr)monitoring data at 10 sites across the species’native range,we examine the spatial and temporal patterns in cone production and possible climatic effects on those patterns using the information-theoretic *** production exhibited great variation across sites and years,and long-term data revealed a weak,ca.3 yr cycle(4 in one case)across the native *** effects of climate were rather complex,most likely due to a mismatch between the prolonged cone-production life cycle process and climatic ***,sites close to each other generally showed similar physical conditions and temporal trends in cone *** sites within longleaf pine’s range,moderate climate conditions appear to promote cone *** most sites,there was an increasing trend in cone production,but how such a trend might be linked to climate change requires further investigation.