Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan
Potamogeton praelongus Wulfen is an aquatic macrophyte that is critically endangered in Japan. Although it is widely distributed throughout the boreal climatic zone, several European countries also recognize it as an endangered species. In Japan, it was once widely distributed throughout Hokkaido bu...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Journal of Asia-Pacific Biodiversity |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2287884X2200084X |
| _version_ | 1811322027139661824 |
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| author | Kohtaroh Shutoh Tomoki Hirose Takashi Shibahara Mami Yamazaki Takashi Shiga |
| author_facet | Kohtaroh Shutoh Tomoki Hirose Takashi Shibahara Mami Yamazaki Takashi Shiga |
| author_sort | Kohtaroh Shutoh |
| collection | DOAJ |
| description | Potamogeton praelongus Wulfen is an aquatic macrophyte that is critically endangered in Japan. Although it is widely distributed throughout the boreal climatic zone, several European countries also recognize it as an endangered species. In Japan, it was once widely distributed throughout Hokkaido but has disappeared or reduced in abundance at its known locations. During 2020–2021, we discovered five new locations of this species in Wakkanai-shi and Sarufutsu-mura, Northern Hokkaido. Growing conditions must be suitable for this species in three of the five locations as it is present with several reproductive shoots or is widely distributed in source pond or lake. However, conditions were poor in the other two locations because few shoots were found or plants were observed only in 2020. Environmental conditions in the new locations were similar to those reported in Europe and North America. In three of the four locations at Wakkanai-shi, P. praelongus was distributed mainly along the eastern shore facing sand dunes or hills, suggesting that the distribution of this species depends on groundwater springs flowing from sand dunes or hills. Further populations may be discovered in the future by intensively surveying areas near springs since many sand dune lakes and similar environments are present in Hokkaido. |
| first_indexed | 2024-04-13T13:27:58Z |
| format | Article |
| id | doaj.art-28ad5e8b4ae447d9acb0516059c18c4e |
| institution | Directory Open Access Journal |
| issn | 2287-884X |
| language | English |
| last_indexed | 2024-04-13T13:27:58Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Asia-Pacific Biodiversity |
| spelling | doaj.art-28ad5e8b4ae447d9acb0516059c18c4e2022-12-22T02:45:03ZengElsevierJournal of Asia-Pacific Biodiversity2287-884X2022-12-01154665670Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, JapanKohtaroh Shutoh0Tomoki Hirose1Takashi Shibahara2Mami Yamazaki3Takashi Shiga4The Hokkaido University Museum, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan; Corresponding author. Tel.: +81 11 706 4508Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato-cho, Hakodate, Hokkaido, 041-8611, JapanWakkanai Ranger Office, Ministry of the Environment, 5-6-1 Suehiro, Wakkanai, Hokkaido, 097-8527, JapanSapporo Museum Activity Center, 15-1-6, Hiragishi 5, Toyohira-ku, Sapporo, Hokkaido, 062-0935, JapanFaculty of Education, Niigata University, 2-8050, Ikarashi, Nishi-ku, Niigata, 950-2181, JapanPotamogeton praelongus Wulfen is an aquatic macrophyte that is critically endangered in Japan. Although it is widely distributed throughout the boreal climatic zone, several European countries also recognize it as an endangered species. In Japan, it was once widely distributed throughout Hokkaido but has disappeared or reduced in abundance at its known locations. During 2020–2021, we discovered five new locations of this species in Wakkanai-shi and Sarufutsu-mura, Northern Hokkaido. Growing conditions must be suitable for this species in three of the five locations as it is present with several reproductive shoots or is widely distributed in source pond or lake. However, conditions were poor in the other two locations because few shoots were found or plants were observed only in 2020. Environmental conditions in the new locations were similar to those reported in Europe and North America. In three of the four locations at Wakkanai-shi, P. praelongus was distributed mainly along the eastern shore facing sand dunes or hills, suggesting that the distribution of this species depends on groundwater springs flowing from sand dunes or hills. Further populations may be discovered in the future by intensively surveying areas near springs since many sand dune lakes and similar environments are present in Hokkaido.http://www.sciencedirect.com/science/article/pii/S2287884X2200084Xaquatic plantsconservationflorasubmergedwater quality |
| spellingShingle | Kohtaroh Shutoh Tomoki Hirose Takashi Shibahara Mami Yamazaki Takashi Shiga Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan Journal of Asia-Pacific Biodiversity aquatic plants conservation flora submerged water quality |
| title | Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan |
| title_full | Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan |
| title_fullStr | Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan |
| title_full_unstemmed | Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan |
| title_short | Obtaining new records of critically endangered Potamogeton praelongus (Potamogetonaceae) depending on groundwater springs in northern coastal areas of Hokkaido, Japan |
| title_sort | obtaining new records of critically endangered potamogeton praelongus potamogetonaceae depending on groundwater springs in northern coastal areas of hokkaido japan |
| topic | aquatic plants conservation flora submerged water quality |
| url | http://www.sciencedirect.com/science/article/pii/S2287884X2200084X |
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