map 物種彎菱形藻 Nitzschia sigma Kützing Wm. Smith[原始紀錄物種] Nitzschia sigma Kutzing Wm. Smith日期2012-12-11地點苗栗縣後龍鎮24.62274,120.75639海拔：6公尺觀測方式出現紀錄記錄者禹安工程顧問股份有限公司鑑定者資料集Investigation Current Status of River in Taiwan between 2002 to 2020授權紀錄授權： CC BY來源連結https://www.gbif.org/occurrence/3774289544識別號9be5ce18-581e-4945-afc9-95d5574d2c6c (OccurrenceUUID)gbif.54290469.3774289544 (externalID)