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Masaaki Tanaka1), Masatsune Takeda2) and Mariko Nagano3):

Limnological Fauna and Flora of the Garden Pond of Prince Akishinonomiya Residence

in the Akasaka Imperial Gardens, Tokyo, Japan [Paltes 1�6]

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11.87 mg/l� ��!"#� 161.3���i������� 0.029 mg/l� ������� 0.005 mg/l� ������ 0.033 mg/l� T.in.N� 0.067 mg/l� DON� 0.672 mg/l� TDN� 0.739 mg/l� PON� 2.655

mg/l� ��� (TN)� 3.393 mg/l� }i��}i� 0.007 mg/l� DOP� 0.006 mg/l� TDP� 0.013 mg/

l� POP� 0.121 mg/l� �}i (TP)� 0.135 mg/l� ��� (TN)/�}i (TP)� 25.2� PON/POP�21.9� T.in.T/}i��}i� 9.5OqC/'�� ���#�� �F�$ <�$��71�%�$ �&'����¡7.&0�OqC

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Department of Environmental and Information Sciences, Yokkaichi University2) ©)ª¥*�«R�¬­� �®¯°±²+³¨ 3�23�1

Department of Zoology, National Science Museum, 3�23�1 Hyakunincho, Shinjuku-ku, Tokyo, 169�0073 Japan

E-mail: takeda@kahaku.go.jp3) ,´µ¶¤¥¤¥·K¸¥¬­ª ,´µ£¹-²º.¨ 3�40

Graduste School of Life Science, Nagoya Women’s University

©)ª*¼(� (39), 2005� 3b 25�Mem. Natn. Sci. Mus., Tokyo, (39), March 25, 2005

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���� Protozoa

��� Rhizopoda

h}x� Amoebida

��������� Thecamoebidae

1. Thecamoeba sp. u�� 1, � 8{

��������� Voklkampfidae

2. Vahlkampfia limax (Dujardin) u�� 1, � 7{

��h}x� Arcellinida

������ Arcellidae

3. Arcella conica Playfair

4. A. discoides Ehrenberg u�� 1, � 1{5. A. polypora Penard

6. A. vulgaris Ehrenberg

7. Centropyxis discoides Penard

8. C. hirsuta Deflandre u�� 1, � 4, 5)

9. C. spinosa Cash

10. Di%ugia acuminata Ehrenberg

�� ���� Euglyphidae

11. Euglypha acanthophora (Ehrenberg) u�� 1� � 2{12. E. ciliata Ehrenberg

13. Trinema lineare Penard

14. Cyphoderia trochus Penard

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���� Ciliatea

��� Oligotrichida

����� Codonellidae

15. Tintinnopsis lacustris (Ents)

�� � �� � Peritrichida

����� Vorticellidae

16. Vorticella sp.

���� Aschelminthes

�� Rotatoria

������� Bdelloidea

�������� Philodinidae

1. Habrotrocha sp.

2. Dissotrocha aculeata (Ehrenberg)

��� Ploima

���� Synchaetidae

3. Polyarthra dolichoptera Idelson

����� Trichocercidae

4. Trichocerca brachyura (Gosse) ��� 2, � 5, 6�5. T. tenuior (Gosse)

���� Brachionidae

6. Brachionus angularis Gosse

7. B. fotficula Wierzejski ��� 2, � 3, 4�8. B. urceolaris O. F. Muller

9. Keratella cochlearis (Gosse)

10. Squatinella mutica Ehrenberg ��� 2, � 1�

!�� Colurellidae

11. Colurella obtusa Gosse

12. C. uncinata (O. F. Muller)

�"���� Lecanidae

13. Lecane bulla (O. F. Muller) ��� 2, � 7�14. L. hamata Stoke

15. L. ludwigii (Eckstein)

��#$�� Filiniidae

16. Filinia longiseta (Ehrenberg)

%&'()*+,-./012 533

������� Testudinellidae

17. Testudinella patina (Hermann) � 2, 2�

��� Gastrotricha

� � Chaetonotoidea

������ Chaetonoroidea

1. Chaetonotus? sp.

���� Arthropoda

�� Crustacea

���� Branchiopoda

��� Cladocera

��� Sididae

1. Diaphanosoma sp. � 2, 3, 5�

����� Daphniidae

2. Ceriodaphnia pulchella Sars � 3, 1�2, 4�

�������� Macrothricidae

3. Ilyocryptus spinifer Herrick

� ����� Chydoridae

4. Alona costata Sars

5. Chydorus sphaericus (O. F. Muller)

!��� Copepoda

��"#� Calanoida

�$%&������� Diaptomidae

1. Eodiaptomus japonicus Burckhardt

'()*#� Cyclopoda

������� Cyclopidae

2. Gen. et sp.

+������ Harpacyicoida

3. Gen. et sp.

,-�� Ostracoda

1. Fam., gen. et sp.

./0123.04256789534

����� Cyanophyta

��� Cyanophyceae

�������� Chroococcales

�������� Chroococcaceae

1. Chroococcus dispersus (Keissler) Lemmermann

2. C. turgidus (Kutzing) Nageli

3. Merismopedia punctatum Meyen

4. Microcystis firma (Kutzing) Schmidle � 5, 13�

����� ������ Nostocales

5. Anabaena sp. � 6, 3�

���� Oscillatoriales

���� Oscillatoriaceae

6. Oscillatoria tenuis Agardh

��� Bacillariophyceae

����� Centricae

�������� Discoideae

����� !� Coscinodiscaceae

1. Cyclotella comta (Ehrenberg) Kutzing

2. C. stelligera Cleve et Grunow

!���� !� Rhizosoleniaceae

!���� !� Rhizosoleniaceae

3. Urosolenia longiseta (Zacharias) Edlund et Stoermer

"#��� Pennata

�$�� !� Fragilarioideae

�$�� !� Fragilariaceae

4. Fragilaria construens (Ehrenberg) Grunow

5. F. pinnata Ehrenberg

6. Synedra delicatissima W. Smith

��%�&�� Achnanthoideae

��%�&�� Achnanthaceae

7. Achnanthes inflata (Kutzing) Grunow

8. A. i. var. elata (Leuduger-Fortmorel) Hustedt

9. A. trinodis Arnott

10. A. microcephala (Kutzing) Cleve

11. A. sp. 1

12. A. sp. 2

'()*+,-./01234 535

�������� Naviculoideae

�������� Naviculaceae

13. Navicula sp. 1

14. N. sp. 2

15. Stauroneis anceps Ehrenberg

16. Pinnularia sp.

�� ���� Gomphonemaceae

17. Gomphonema acuminatum Ehrenberg

18. G. augur Ehrenberg

19. G. gracile Ehrenberg

�� ����� Cymbellaceae

20. Cymbella aspera Ehrenberg

21. C. hustedtii Krasske

22. C. inaequalis (Ehrenberg) Rabenhorst

����� Epithemiaceae

23. Epithemia turgida (Ehrenberg) Kutzing

��������� Eunotioideae

��������� Eunotiaceae

24. Eunotia lunaris (Ehrenberg) Grunow

25. E. sp. 1

26. E. sp. 2

���� Nitzschioideae

���� Nitzschiaceae

27. Nitzschia amphibia (Kutzing) Grunow

28. N. sp. 1

29. N. sp. 2

30. N. sp. 3

������� Surirellaceae

31. Surirella biseriata Brebisson

����� Chlorophyta

��� Chlorophyceae

������� Chlorococcales

����� Hydrodictyaceae

1. Pediastrum boryanum (Turpin) Menrghini

2. P. b. var. pseudoglabrum Parra � ! 4, 2"

#$%&'(#%)'*+,-.536

3. Pediastrum duplex Meyen ��� 4, � 1�4. P. integrum Nageli ��� 4, � 3�5. P. tetras (Ehrenberg) Ralfs ��� 4, � 4�6�

������� ��� Dictyosphaeriaceae

6. Dictyosphaerium granulatum Hindak ��� 6, � 1�2�7. D. pulchellum Wood ��� 6, � 5�

������ Coelastraceae

8. Coelastrum cambricum Archer ��� 4, � 7�8�9. C. sphaericum Nageli

����� Oocystaceae

10. Monoraphidium minutum (Nageli) Legherova

11. M. pusillum (Printz) Legnerova

12. Ankistrodesmus falcatus (Corda) Ralfs

13. A. fusiformis Corda

14. Kirchneriella lunaris (Kirchner) K. Mobius

16. K. obesa (West) Schmidle

17. Schroederia spiralis (Printz) Korschikov

18. Actinastrum hantzschii Lagerheim

19. Oocystis parva W. et G. S. West

20. O. pusilla Hansgirg

21. Tetraedron caudatum (Corda) Hansgirg

22. T. limneticum var. robustum f. minor Hortobagyi ��� 6, � 6�23. T. minimum (A. Braun) Hansgirg

24. T. trilobatum (Reinsch) Hansgirg

25. Nephrocytium obesa West ��� 5, � 4�

�� ���� Botryococcaceae

26. Botryococcus braunii Kutzing

����� ���� �� Scenedesumaceae

27. Scenedesmus acutus Meyen

28. S. dispar var. costatus Hortobagyi et Nemeth

29. S. maculosus Hortobagyi ��� 5, � 11�30. S. opoliensis P. Richter

31. S. quadricauda (Turpin) Brebisson ��� 5, � 12�32. S. spinosus Chodat

�!� ��" Ulothrichales

#�!$�� Microsporaceae

33. Microspora amoena (Kutzing) Rabenhorst ��� 6, � 4�

%&'()*+,-./012 537

������ Oedogoniales

������ Oedogoniaceae

34. Oedogonium sp.

����� Zygnematales

����� Zygnemataceae

35. Mougeotia sp. �� 6, � 7 36. Spirogyra sp.

����� ���� Desmidiaceae

37. Closterium acerosum (Schrank) Ehrenberg

38. C. parvulum Nageli

39. Cosmarium botrytis Meneghini �� 5, � 10 40. C. inpressulum West

41. C. rectangulare Grunow

42. Staurastrum subscolopacinum W. et G. S. West

43. S. paradoxum var. parvum W. et G. S. West

44. S. sp.

����� Xanthophyceae

������� Rhizochloridales

��������� Stipitococcaceae

1. Stipitococcus ras Pascher �� 5, � 5

���� Euglenophyceae

��� � Euglenales

��� � Euglenaceae

1. Euglena sp.

2. Phacus orbicularis Hubner �� 5, � 8�9 3. P. sueciccus (Lemmermann) Lemmermann

4. Trachelomonas armata var. longa Deflandre �� 1, � 6 5. T. dybowskii Drezepolski

6. T. volzii Lemmermann

!"#�� Dinophyceae

$%� & '()* � Gymnodiniales

+,-./ � Gymnodiniaceae

1. Gymnodinium sp. �� 1, � 3

0%� 1�()* � Peridiniales

*2./ � 1�()* � Peridiniaceae

2. Peridinium bipes f. globosum Lindemann �� 5, � 1�3

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ficula�P$�%� ��� Testudinella patina� Q'I)� Centropyxis hirsuta� Arcella discoidesR�S��� ()��� TUO�Microcystis firma�JK��� ���2VTUO� Chroococcus dispersus�WUO� Coelastrum cambricum� Pediastrum boryanum� Dictyosphaerium pulchellum� XUO� Fragi-

laria construensR�S����� ����6Y�� ����Z1[\]�^&')�_`ab6cd (1992)�ef�gC<�� I)�h XI]� d[\]MNO_`��h XII]� i[\]jkNO_`� ()�JK��?�Microcystis firma�lm0�nGD�#%� Microcystia aeruginosa��M. wesenbergiiR�2V�oL�p� h XI]� i[\]TUO_`�qrst����u�

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Summary

The limnological fauna and flora of the garden pond of Prince Akishinonomiya Residence in the Akasaka

Imperial Gardens, Tokyo, were investigated on July 22, 2004. The species are referred to 133 species of 76

genera. This pond is small in scale, but excellent as biota for microscopic organisms, with many kinds of

water plants. There is no dominant species in animals, but Brachionus forficula of the Rotatoria is rather

prominent and followed by Testudinella patina of the Rotatoria, Centropyxis hirsute and Arcella discoides

of the Protozoa, and in plants Microcystis firma of the Cyanophyceae is dominant and followed by

Chroococcus disperses of the Cyanophyceae, Coelastrum cambricum, Pediastrum boryanum and Dicty-

osphaerium pulchellum of the Chlorophyceae, and Fragilari a construens of the Bacillariophyceae. Consult-

ing Tanaka (1992), the fauna is referred to the type XI (mesotrophic rotiferal community) or the type XII

(eutrophic rhyzopodean community), and the flora may belong to the type XI (eutrophic cyanophyceaean

community).

� � � �

cd�n� 1992� �vZ1�� ������DGF�i[\����� 530 pp.� �����  ¡� ����[Tanaka, M., 1992. The Lakes in Japan. 530 pp. Nagoya Univ. Press, Nagoya.]

���¢�����^&')£ 539

Explanation of Plates

�� 1 Plate 1

1. Arcella discoides; 2. Euglypha acanthophora; 3. Gymnodinium sp.; 4, 5. Centropyxis hirsuta; 6. Trachelomonas

armata var. longa; 7. Vahlkamfia limax; 8. Thecamoeba sp.; 9. Peridinium cinctum

�� 2 Plate 2

1. Squatinella mutica; 2. Testudinella patina; 3, 4. Brachionus forficula; 5, 6. Trichocerca brachyura; 7. Lecane bulla

�� 3 Plate 3

1, 2, 4. Ceriodaphnia pulchella �2. ������� 3, 5. Diaphanosoma sp. �3. ������

�� 4 Plate 4

1. Pediastrum duplex; 2. P. boryanum var. pseudoglabrum; 3. P integrum; 4�6. P tetras; 7, 8. Coelastrum

cambricum

�� 5 Plate 5

1. Kirchneriella obesa; 2. K. lunaris; 3. Ankistrodesmus falcatus; 4. Nephrocytium obesa; 5. Stipitococcus vas; 6.

Staurastrum paradoxum var. parvum; 7. S. subscolopacinum; 8, 9. Phacus orbicularis; 10. Cosmarium botrytis; 11.

Scenedesmus maculosus; 12. S. quadricauda; 13. Microcystis firma

�� 6 Plate 6

1, 2. Dictyosphaerium granulatum 3. Anabaena sp. 4. Microspora amoena 5. Dictyosphaerium pulchellum 6.

Tetraedron limneticum var. rostrum f. minor 7. Mougeotia sp.

�� ��� �����540

�� 1 Plate 1

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�� 2 Plate 2

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�� 3 Plate 3

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�� 4 Plate 4

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�� 5 Plate 5

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�� 6 Plate 6

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