Melanie
Well-known member
From the upcoming IOC (August 23, 2018)
Subject: *
Systematics, Biogeography and Paleontology
Presentation Type: *
Poster
Title of Abstract: *
Pleistocene seabirds from Japan: its uniqueness and biogeographic implications
Authors:
Junya Watanabe1, Hiroshige Matsuoka1, Akihiro Koizumi2, Yoshikazu Hasegawa3
1. Department of Geology and Mineralogy, Kyoto University, Kyoto, Japan, 2. Iida City Museum, Iida, Japan, 3. Gunma Museum of Natural History, Tomioka, Japan
Abstract *
The fossil record provides clues to investigate how animals responded to fluctuating environments and how modern faunas have been formed through the geologic time. Seabirds are of especial interest in this regard, given their sensitivity to oceanic environment. Although the North Pacific has been a focal area for studies of seabird faunal dynamics, the seabird fossil record has been rather scarce in the western North Pacific. In this report, an overview of Pleistocene seabirds from Japan is given, based on a revision of the material from Shiriya, northeast Japan, and a preliminary examination of a material from several localities near Tokyo, central Japan. As a result, the Shiriya material turned out to include at least 29 seabird species and the Tokyo material includes seven, with five species in common. Interestingly, two extinct flightless taxa occur in both areas: a diving duck (Shiriyanetta hasegawai) and mancalline auks (Mancallinae). Unique components of the Shiriya material include a large extinct murre (Uria onoi), and recently extinct Spectacled Cormorant (Phalacrocorax perspicillatus). The occurrence of the latter species is of great biogeographical importance, as it represents the first definitive record of the species outside Bering Island. The Tokyo material probably includes a little auk (Alle), which rarely occurs in the western North Pacific today. In summary, these fossil materials indicate a moderate turnover of seabird fauna in the western North Pacific since the Pleistocene. Further studies are required to obtain a more complete picture of faunal dynamics in the Pleistocene North Pacific.
https://www.iocongressabstracts.com/abstract_summary.php?mode=public&abs_id=1322
Subject: *
Systematics, Biogeography and Paleontology
Presentation Type: *
Poster
Title of Abstract: *
Pleistocene seabirds from Japan: its uniqueness and biogeographic implications
Authors:
Junya Watanabe1, Hiroshige Matsuoka1, Akihiro Koizumi2, Yoshikazu Hasegawa3
1. Department of Geology and Mineralogy, Kyoto University, Kyoto, Japan, 2. Iida City Museum, Iida, Japan, 3. Gunma Museum of Natural History, Tomioka, Japan
Abstract *
The fossil record provides clues to investigate how animals responded to fluctuating environments and how modern faunas have been formed through the geologic time. Seabirds are of especial interest in this regard, given their sensitivity to oceanic environment. Although the North Pacific has been a focal area for studies of seabird faunal dynamics, the seabird fossil record has been rather scarce in the western North Pacific. In this report, an overview of Pleistocene seabirds from Japan is given, based on a revision of the material from Shiriya, northeast Japan, and a preliminary examination of a material from several localities near Tokyo, central Japan. As a result, the Shiriya material turned out to include at least 29 seabird species and the Tokyo material includes seven, with five species in common. Interestingly, two extinct flightless taxa occur in both areas: a diving duck (Shiriyanetta hasegawai) and mancalline auks (Mancallinae). Unique components of the Shiriya material include a large extinct murre (Uria onoi), and recently extinct Spectacled Cormorant (Phalacrocorax perspicillatus). The occurrence of the latter species is of great biogeographical importance, as it represents the first definitive record of the species outside Bering Island. The Tokyo material probably includes a little auk (Alle), which rarely occurs in the western North Pacific today. In summary, these fossil materials indicate a moderate turnover of seabird fauna in the western North Pacific since the Pleistocene. Further studies are required to obtain a more complete picture of faunal dynamics in the Pleistocene North Pacific.
https://www.iocongressabstracts.com/abstract_summary.php?mode=public&abs_id=1322
