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Marine biodiversity in Japanese waters.

Fujikura K, Lindsay D, Kitazato H, Nishida S, Shirayama Y - PLoS ONE (2010)

Bottom Line: We expect global change to have a tremendous impact on marine biodiversity and ecosystems.Japan is in a particularly suitable geographic situation and has a lot of facilities for conducting marine science research.Japan has an important responsibility to contribute to our understanding of life in the oceans.

View Article: PubMed Central - PubMed

Affiliation: Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Kanagawa, Japan. fujikura@jamstec.go.jp

ABSTRACT
To understand marine biodiversity in Japanese waters, we have compiled information on the marine biota in Japanese waters, including the number of described species (species richness), the history of marine biology research in Japan, the state of knowledge, the number of endemic species, the number of identified but undescribed species, the number of known introduced species, and the number of taxonomic experts and identification guides, with consideration of the general ocean environmental background, such as the physical and geological settings. A total of 33,629 species have been reported to occur in Japanese waters. The state of knowledge was extremely variable, with taxa containing many inconspicuous, smaller species tending to be less well known. The total number of identified but undescribed species was at least 121,913. The total number of described species combined with the number of identified but undescribed species reached 155,542. This is the best estimate of the total number of species in Japanese waters and indicates that more than 70% of Japan's marine biodiversity remains un-described. The number of species reported as introduced into Japanese waters was 39. This is the first attempt to estimate species richness for all marine species in Japanese waters. Although its marine biota can be considered relatively well known, at least within the Asian-Pacific region, considering the vast number of different marine environments such as coral reefs, ocean trenches, ice-bound waters, methane seeps, and hydrothermal vents, much work remains to be done. We expect global change to have a tremendous impact on marine biodiversity and ecosystems. Japan is in a particularly suitable geographic situation and has a lot of facilities for conducting marine science research. Japan has an important responsibility to contribute to our understanding of life in the oceans.

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Percent ratio of the number of described species (NDS) in respective phyla.The ratio means NDS versus the total number of described species (tNDS) in all phyla ranked from top to 10th.
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pone-0011836-g006: Percent ratio of the number of described species (NDS) in respective phyla.The ratio means NDS versus the total number of described species (tNDS) in all phyla ranked from top to 10th.

Mentions: Summarized data concerning species richness including the NDS and NIS, and information on state of knowledge estimates, taxonomic experts, and identification guides were compiled in Table 4. More detailed data on species richness in each lower taxa (order or family levels) including the NDS, NES, NUS, ENS, NIS, and information on taxonomic experts, identification guides, and state of knowledge estimates for each taxon are shown in Table S3. The tNDS in Japanese waters reached 33,629. Among 79 phyla or divisions, 66 phyla or divisions contained more than one species. In 13 phyla or divisions, there was no information allowing the computation of NDS and NUS (Table S4). The phyla belonging to the Eukarya contain many conspicuous, often larger species, had members living in shallow water, and generally had a tendency to exhibit higher reported species richness. The phylum Mollusca had the highest reported value of 8,658 for the NDS. The second and third highest NDS were within the Arthropoda and Chordata, respectively. The 10 phyla with the highest totals for the NDS comprised about 85 percent of the tNDS (Figure 6). Contrastingly, phyla containing many inconspicuous, smaller species had a small NDS (Table S4).


Marine biodiversity in Japanese waters.

Fujikura K, Lindsay D, Kitazato H, Nishida S, Shirayama Y - PLoS ONE (2010)

Percent ratio of the number of described species (NDS) in respective phyla.The ratio means NDS versus the total number of described species (tNDS) in all phyla ranked from top to 10th.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2914005&req=5

pone-0011836-g006: Percent ratio of the number of described species (NDS) in respective phyla.The ratio means NDS versus the total number of described species (tNDS) in all phyla ranked from top to 10th.
Mentions: Summarized data concerning species richness including the NDS and NIS, and information on state of knowledge estimates, taxonomic experts, and identification guides were compiled in Table 4. More detailed data on species richness in each lower taxa (order or family levels) including the NDS, NES, NUS, ENS, NIS, and information on taxonomic experts, identification guides, and state of knowledge estimates for each taxon are shown in Table S3. The tNDS in Japanese waters reached 33,629. Among 79 phyla or divisions, 66 phyla or divisions contained more than one species. In 13 phyla or divisions, there was no information allowing the computation of NDS and NUS (Table S4). The phyla belonging to the Eukarya contain many conspicuous, often larger species, had members living in shallow water, and generally had a tendency to exhibit higher reported species richness. The phylum Mollusca had the highest reported value of 8,658 for the NDS. The second and third highest NDS were within the Arthropoda and Chordata, respectively. The 10 phyla with the highest totals for the NDS comprised about 85 percent of the tNDS (Figure 6). Contrastingly, phyla containing many inconspicuous, smaller species had a small NDS (Table S4).

Bottom Line: We expect global change to have a tremendous impact on marine biodiversity and ecosystems.Japan is in a particularly suitable geographic situation and has a lot of facilities for conducting marine science research.Japan has an important responsibility to contribute to our understanding of life in the oceans.

View Article: PubMed Central - PubMed

Affiliation: Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Kanagawa, Japan. fujikura@jamstec.go.jp

ABSTRACT
To understand marine biodiversity in Japanese waters, we have compiled information on the marine biota in Japanese waters, including the number of described species (species richness), the history of marine biology research in Japan, the state of knowledge, the number of endemic species, the number of identified but undescribed species, the number of known introduced species, and the number of taxonomic experts and identification guides, with consideration of the general ocean environmental background, such as the physical and geological settings. A total of 33,629 species have been reported to occur in Japanese waters. The state of knowledge was extremely variable, with taxa containing many inconspicuous, smaller species tending to be less well known. The total number of identified but undescribed species was at least 121,913. The total number of described species combined with the number of identified but undescribed species reached 155,542. This is the best estimate of the total number of species in Japanese waters and indicates that more than 70% of Japan's marine biodiversity remains un-described. The number of species reported as introduced into Japanese waters was 39. This is the first attempt to estimate species richness for all marine species in Japanese waters. Although its marine biota can be considered relatively well known, at least within the Asian-Pacific region, considering the vast number of different marine environments such as coral reefs, ocean trenches, ice-bound waters, methane seeps, and hydrothermal vents, much work remains to be done. We expect global change to have a tremendous impact on marine biodiversity and ecosystems. Japan is in a particularly suitable geographic situation and has a lot of facilities for conducting marine science research. Japan has an important responsibility to contribute to our understanding of life in the oceans.

Show MeSH