뉴질랜드 whangateau harbour의 꼬막 개체수 변화 (2009년 이후)

소개글

뉴질랜드 Whangateau Harbour의 intertidal sandflat에서 2009년에 cockle의 대규모 폐사가 발생한 이후 개체수와 사이즈, 분포에 대한 변화를 다룬 레포트 입니다. 뉴질랜드 대학에서 해양학 수업때 제출한 레포트로 A+ 받았습니다.

목차

1. Introduction

2. Materials and methods
2-1. Cockles’ density and size measurement
2-2. Sediment grain size
2-3. Data for pattern changes in the cockle population since 2009

3. Results
3-1. Changes in the density of cockles with distance down the shore
3-2. Changes in the size of cockles with distance down the shore
3-3. Changes in the density of cockles since 2009
3-4. Sediment types with distance down the shore

4. Discussion

5. Conclusion

6. References

본문내용

Whangateau Harbour (36°19´S, 174°46´E), a shallow estuary with an area of about 7.5km2, with approximately 85% of its total area consisting of intertidal sandflats, is located approximately 70km northeast of Auckland central (Fig. 1-a) (Tricklebank et al., 2020). The amount of freshwater flowing into this place is minimal, and its tidal prism reaches a maximum of about 9,491,105 m3; over 90% of the total seawater is exchanged during each tidal cycle (Auckland Regional Council, 2009; Auckland Regional Council, 2010). Due to this environment, this area has a large community of bivalves that intake nutrients by filtering hundreds of thousands of m3 of seawater per tidal cycle (Auckland Regional Council, 2009; Burge et al., 2016).

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