{"title":"入侵还是威胁?基于植物标本室记录的旧大陆苍耳菌(Asteraceae)在意大利的衰落，ESF1","authors":"S. Tomasello","doi":"10.7320/flmedit32.017.1","DOIUrl":null,"url":null,"abstract":"Müller-Kiefer, J. & Tomasello, S.: Invasive or threatened? The decline of the old-world Xanthium strumarium ( Asteraceae ) in Italy based on herbarium records. — Fl. Medit. 32: 17-24. 2022. — ISSN: 1120-4052 printed, 2240-4538 online. Xanthium is a taxonomically intricate genus of the sunflower family ( Asteraceae ). In Italy, two species of Xanthium sect. Xanthium are present: the native X. strumarium and then introduced X. orientale . In this study, we assess changes in relative frequency of these two species in Italy based on herbarium records. Based on our analyses, we could observe a strong decline of the native X. strumarium in Italy, started approximately one hundred years ago. Since then, this species has become extremely rare and more effort should be spent to investigate its actual distribution range and potential extinction risk in Italy. This study also demonstrates the importance of herbaria to address ques-tions regarding the dynamics in relative frequency and distribution of competing native and introduced species.","PeriodicalId":34925,"journal":{"name":"Flora Mediterranea","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Invasive or threatened? The decline of the old‐world Xanthium strumarium (Asteraceae ) in Italy based on herbarium records, ESF1\",\"authors\":\"S. Tomasello\",\"doi\":\"10.7320/flmedit32.017.1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Müller-Kiefer, J. & Tomasello, S.: Invasive or threatened? The decline of the old-world Xanthium strumarium ( Asteraceae ) in Italy based on herbarium records. — Fl. Medit. 32: 17-24. 2022. — ISSN: 1120-4052 printed, 2240-4538 online. Xanthium is a taxonomically intricate genus of the sunflower family ( Asteraceae ). In Italy, two species of Xanthium sect. Xanthium are present: the native X. strumarium and then introduced X. orientale . In this study, we assess changes in relative frequency of these two species in Italy based on herbarium records. Based on our analyses, we could observe a strong decline of the native X. strumarium in Italy, started approximately one hundred years ago. Since then, this species has become extremely rare and more effort should be spent to investigate its actual distribution range and potential extinction risk in Italy. This study also demonstrates the importance of herbaria to address ques-tions regarding the dynamics in relative frequency and distribution of competing native and introduced species.\",\"PeriodicalId\":34925,\"journal\":{\"name\":\"Flora Mediterranea\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-04-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Flora Mediterranea\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.7320/flmedit32.017.1\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Agricultural and Biological Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Flora Mediterranea","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.7320/flmedit32.017.1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 1
摘要
m . ller- kiefer, J. & Tomasello, S.:入侵还是威胁?基于植物标本室记录的意大利旧大陆苍耳菌(Asteraceae)的衰落。——福音书，32:17-24。2022. - ISSN:印刷版1120-4052，在线版2240-4538。苍耳属是向日葵科(菊科)中一个分类复杂的属。在意大利，苍耳属有两种:本地的苍耳属和引进的东方苍耳属。在本研究中，我们基于植物标本馆记录评估了这两个物种在意大利的相对频率变化。根据我们的分析，我们可以观察到意大利本地X. strumarium的急剧下降，大约始于100年前。从那以后，这个物种变得极其罕见，应该花更多的精力来调查它在意大利的实际分布范围和潜在的灭绝风险。本研究还证明了植物标本馆对解决有关本地和引进物种竞争的相对频率和分布动态问题的重要性。
Invasive or threatened? The decline of the old‐world Xanthium strumarium (Asteraceae ) in Italy based on herbarium records, ESF1
Müller-Kiefer, J. & Tomasello, S.: Invasive or threatened? The decline of the old-world Xanthium strumarium ( Asteraceae ) in Italy based on herbarium records. — Fl. Medit. 32: 17-24. 2022. — ISSN: 1120-4052 printed, 2240-4538 online. Xanthium is a taxonomically intricate genus of the sunflower family ( Asteraceae ). In Italy, two species of Xanthium sect. Xanthium are present: the native X. strumarium and then introduced X. orientale . In this study, we assess changes in relative frequency of these two species in Italy based on herbarium records. Based on our analyses, we could observe a strong decline of the native X. strumarium in Italy, started approximately one hundred years ago. Since then, this species has become extremely rare and more effort should be spent to investigate its actual distribution range and potential extinction risk in Italy. This study also demonstrates the importance of herbaria to address ques-tions regarding the dynamics in relative frequency and distribution of competing native and introduced species.
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