{"title":"北卡罗来纳州和弗吉尼亚州亚洲苦草(Celastrus orbiculatus)在粗粒度和细粒度上的分布情况","authors":"McNab W. Henry, Tracy Roof, Erik C. Berg","doi":"10.2179/0008-7475.89.1.49","DOIUrl":null,"url":null,"abstract":"Asian bittersweet ( Celastrus orbiculatus ) is a widespread, invasive, twining vine in eastern North American forests. Factors associated with its local occurrence are well known but seldom reported at geographic scales coarser than research locations. We evaluated its occurrence across a hierarchy of land units ranging from coarse (provinces), intermediate (landscapes), and fine (site) scales in North Carolina and Virginia. Chi-square tests indicated a significant difference in the proportion of plots with C. orbiculatus in mountain (5.5%) compared to piedmont (9.9%) provinces. Using groups of forest types (e.g., Acer-Betula, Quercus-Pinus ) to represent landscape-scale land units, C. orbiculatus occurred in a greater proportion of plots classified as Quercus-Carya . At the fine scale of sample sites within landscapes, in plots where C. orbiculatus was present the soil moisture regime was classified as mesic significantly more often than xeric in both provinces. Foliage cover differed between mountain (9.6%) and piedmont provinces (5.1%), and among several forest type groups at the landscape scale but responded weakly to moisture regime. Our results show that the proportional occurrence of C. orbiculatus varied significantly among land units at each hierarchical level. We suggest that our land units, defined by physiography, tree communities and soil moisture regime, represent tentative eco-systems that can be included as spatial variables in models to improve predictions of the presence of C. orbiculatus , for example in response to a changing climate.","PeriodicalId":50984,"journal":{"name":"Castanea","volume":null,"pages":null},"PeriodicalIF":0.2000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Asian Bittersweet (Celastrus orbiculatus) Occurrence at Coarse and Fine Scales in North Carolina and Virginia\",\"authors\":\"McNab W. Henry, Tracy Roof, Erik C. Berg\",\"doi\":\"10.2179/0008-7475.89.1.49\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Asian bittersweet ( Celastrus orbiculatus ) is a widespread, invasive, twining vine in eastern North American forests. Factors associated with its local occurrence are well known but seldom reported at geographic scales coarser than research locations. We evaluated its occurrence across a hierarchy of land units ranging from coarse (provinces), intermediate (landscapes), and fine (site) scales in North Carolina and Virginia. Chi-square tests indicated a significant difference in the proportion of plots with C. orbiculatus in mountain (5.5%) compared to piedmont (9.9%) provinces. Using groups of forest types (e.g., Acer-Betula, Quercus-Pinus ) to represent landscape-scale land units, C. orbiculatus occurred in a greater proportion of plots classified as Quercus-Carya . At the fine scale of sample sites within landscapes, in plots where C. orbiculatus was present the soil moisture regime was classified as mesic significantly more often than xeric in both provinces. Foliage cover differed between mountain (9.6%) and piedmont provinces (5.1%), and among several forest type groups at the landscape scale but responded weakly to moisture regime. Our results show that the proportional occurrence of C. orbiculatus varied significantly among land units at each hierarchical level. We suggest that our land units, defined by physiography, tree communities and soil moisture regime, represent tentative eco-systems that can be included as spatial variables in models to improve predictions of the presence of C. orbiculatus , for example in response to a changing climate.\",\"PeriodicalId\":50984,\"journal\":{\"name\":\"Castanea\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.2000,\"publicationDate\":\"2024-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Castanea\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.2179/0008-7475.89.1.49\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Castanea","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.2179/0008-7475.89.1.49","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
Asian Bittersweet (Celastrus orbiculatus) Occurrence at Coarse and Fine Scales in North Carolina and Virginia
Asian bittersweet ( Celastrus orbiculatus ) is a widespread, invasive, twining vine in eastern North American forests. Factors associated with its local occurrence are well known but seldom reported at geographic scales coarser than research locations. We evaluated its occurrence across a hierarchy of land units ranging from coarse (provinces), intermediate (landscapes), and fine (site) scales in North Carolina and Virginia. Chi-square tests indicated a significant difference in the proportion of plots with C. orbiculatus in mountain (5.5%) compared to piedmont (9.9%) provinces. Using groups of forest types (e.g., Acer-Betula, Quercus-Pinus ) to represent landscape-scale land units, C. orbiculatus occurred in a greater proportion of plots classified as Quercus-Carya . At the fine scale of sample sites within landscapes, in plots where C. orbiculatus was present the soil moisture regime was classified as mesic significantly more often than xeric in both provinces. Foliage cover differed between mountain (9.6%) and piedmont provinces (5.1%), and among several forest type groups at the landscape scale but responded weakly to moisture regime. Our results show that the proportional occurrence of C. orbiculatus varied significantly among land units at each hierarchical level. We suggest that our land units, defined by physiography, tree communities and soil moisture regime, represent tentative eco-systems that can be included as spatial variables in models to improve predictions of the presence of C. orbiculatus , for example in response to a changing climate.
期刊介绍:
Castanea is named in honor of the American Chestnut tree. Castanea is thebotanical name for Chestnuts, dating back to what the ancient Greeks calledthem.
The American Chestnut is a critically endangered tree that once made up 35%of the forests of the Eastern US before being devastated by a blight thatdestroyed up to 4 billion American Chestnut trees.
Castanea serves professional and amateur botanists by reviewing andpublishing scientific papers related to botany in the Eastern United States.
We accept papers relating to plant biology, biochemistry, ecology, floristics,physiology and systematics.