1 / 33

Crustaceana 79 (10): 1223-1240

Community Structure of Planktonic Copepods in I-Lan Bay and the Adjacent Kuroshio Waters off Northeastern Taiwan 宜蘭灣及 台灣東北部 外海黑潮流域之 浮游橈足類的群聚結構. Crustaceana 79 (10): 1223-1240. CHUN-YEIN LEE 1,4 ) , CHANG-TAI SHIH 2 ) and CHIEN-CHUNG HSU 3 ). Meng-Yao Lee. Introduction.

naomi-clarke
Download Presentation

Crustaceana 79 (10): 1223-1240

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Community Structure of Planktonic Copepods in I-Lan Bay and the Adjacent Kuroshio Waters off Northeastern Taiwan宜蘭灣及台灣東北部外海黑潮流域之浮游橈足類的群聚結構 Crustaceana 79 (10): 1223-1240 CHUN-YEIN LEE 1,4), CHANG-TAI SHIH 2) and CHIEN-CHUNG HSU 3) Meng-Yao Lee

  2. Introduction

  3. Tropical Level and Marine Food Chains

  4. Objectives • This research are to illustrate the relationship between copepod distribution and hydrographic factors and to monitor the faunas of marine planktonic copepods. • Important organisms and their seasonal community dynamics, such as species composition, abundance, distributional pattern, parameters of biodiversity, community structure , and other issues of biological oceanography.

  5. Material and Method

  6. 1/7~8 4/20~21 7/22~23 10/21~22 1. Datacollect

  7. Choice stations (R/V Hai-Chien) CTD (SBE19) Ring trawl net (335µm,1m,0.5m/s) Samples Diveded 、 enumeration and Identification

  8. Choice stations R/V Hai-Chien CTD (SBE19) Ring trawl net (335µm,1m,0.5m/s) Samples 種類計數、鑑別

  9. Choice stations R/V Hai-Chien CTD (SBE19) Ring trawl net (335µm,1m,0.5m/s) Samples Diveded 、 enumeration and Identification

  10. Choice stations R/V Hai-Chien CTD (SBE19) 5%formaldehyde Ring trawl net (335µm,1m,0.5m/s) Samples Diveded 、 enumeration and Identification

  11. Choice stations R/V Hai-Chien CTD (SBE19) Ring trawl net (335µm,1m,0.5m/s) Samples Diveded 、 Enumeration and Identification

  12. Shih, C. T., MS、Chen ＆Zhang (1965) Chihara and Murano(1997) … Species ： species develop Maturity of identification (appendages) (P5) (genital somites) genera rudimentary (genus feature) copepodid 2. Data identification

  13. Species compositions were compared among station and copepod species diversity Diversity index Richness Evenness Similarity between two communities Jaccard coefficient UPGMA Cluster 3. Data analysis

  14. Yi: the dominance of species i Ni : the number of individuals of species i at all stations N : the number of individuals of all species at all stations fi: the frequency of station that species i occurs R : the seasonal replacement rate of dominant species a ＆ b : the numbers of dominant species occurring in two adjoining seasons respectively c : the number of dominant species common to both

  15. Result

  16. Spring April Winter January Autumn October Hydrographic characteristics Summer July

  17. T-S diagrams in 2004

  18. Calanoida, 94 species Cyclopoida, 7 species Harpacticoida, 1 species Poecilostomatoida, 35 species Species composition 4 orders, 25 families, 53 genera, 137 species 52 species were common in all seasons

  19. 100% Cosmocalanus darwini Oithona plumifera Oncaea venusta Clausocalanus minor 33 species single A B KS C D 5 species 6 species 8 species 8 species 6 species Ctenocalanus, Neoscolecithrix, Scaphocalanus, Scolecithricella, and Tharybis. Genera

  20. Abundance and the dominant species 1334 ind./m3 49.2-75.7% 43-57.7% Spring 999±372 ind/m3 all seasons 26 dominant species 47.7% single seasons Shelf waters > Kuroshio waters 64.7%

  21. (H’) 3.03-5.16 (S) 77-101 (S) (H’) (J’) (J’) 0.57-0.91 Biodiversity parameters

  22. Distributional association 255 ind./m3 239 ind./m3 Shelf region Summer KS、C All season Biological oceanography A BKS C D Calanus sinicus

  23. Discussion

  24. Aetideus truncatus 7 species Haloptilus longcornis Scolecithricella dentata Gaetanus minor Pareucalanus attenuatus Candacia longimana Pontellina plumata Candacia ethiopica

  25. (Frost & Fleminger, 1968; Chihara & Murano, 1997) Clausocalanus spp. Nannocalanus minor Acrocalanus gibber Calanus sinicus Cosmocalanus darwini Undinula vulgaris Temora turbinata

  26. 999±372 ind./m3(A) nutrients (Lalli & Parsons, 2000) Coast shelf 155±129 ind./m3(D) Meng et al. (1996), Yang et al. (1999a), and Xu et al. (2003).

  27. Kang & Hong (1995) (H) 4.84~ 5.17 (S) 46~ 57 Chern&Wang(1994) and Lee&Hu(1998)

  28. B 39.5% D 40.4% Calanus sinicus 35% Seaward Yang et al. (1999b) Temora turbinata 85% of total zooplankton in Spring Yellow Sea East China Sea Calanus sinicus

  29. Northern: Spring-Summer Lower water temperature Southern : Winter Autumn Countercurrent Kuroshio slope shelf edgeNorthern Taiwan Calanus sinicus Xu et al. (2004) 23℃、 KC deeper Shih & Chiu (1998)

  30. Conclusion

  31. In I-Lan Bay and the Adjacent Kuroshio Waters are not significant differenceof copepodscommunity structure compared with past study, and seasonal fluctuations of copepods distributed in this study. Copepodsabundence、Speciees number and diversity index showed a decreaseing trend seward. (coast to shelf) Copepod species distribution patternswith Kuroshio current and two major type : Spring-Winter and Summer-Autumn. Calanus sinicus is an indicatorspecies Kuroshio Current and East China Sea waters.

  32. Thank you

More Related