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最近寫的一篇文章 給阿多仔教授看的 有興趣的人可以看看
去過大陸，才知道自己身體不好
去過 Bunaken，才知道台灣珊瑚身體不好
Bunaken island , a famous scuba-diving site localtes in North Sulawesi, Indonesia, has been zoned into three different use zones:
1.Core
2.Tourism
3.General use.
In-situ coral reef cover-rate inspections as well as traditional census or random sampling, are not effective to evaluate large-scale undersea drop-offs. However, satellite imaginary experimental measurements are often used to monitor specific region or habitat patches. Therefore, this paper focuses on the use of well-cariberated satellite images to match in-situ survey experimental studies in Bunaken.
First, an attempt was made to determine if actual reef cover was predicted by theoretical spectral models. The substrates were classified as following: superabundant live coral, abundant live coral, common live coral, rubble, seagrass and deep sea. The data showed that algae, spectrally similar to live coral, continue to pose a problem for classification accuracy. This problem will
be controlled by in-situ survey in some selected zones. After image arguments were properly adjusted, the survey data was processed in CPCe software and then the estimated cover rate was generated.
They observed that the overall cover rate in the 3 zones had not changed in obvious ways. That implies that the zonation hypothesis should be further tested for a period more than 3 years to see the long-term effects. The study suggests that decreasing scuba-diving pressure in Bunaken coral reef is indispensable for sustainable use. Also, wastewater from residential use also contributes to seagrass growth in general use zones. What's more, Fukoi suffered from using dynamite.
Many coral reef survey projects show just discreet and small-scale data. In this paper, the survey combined efforts of divers and the satellites will provide more realistic verifications of coral reef status, as well as more solid links between human activity and reef growth.
What can this paper tell us about improving Taiwan coral reef? After visiting Bunaken, I found Taiwan has greater infrastructures than those in Bunaken. However, most coral reefs in Taiwan suffer from human impact. An obstacle to the development of ecotourism in Taiwan is the high labor prices allowing dive shops to controll price by developing coast dive, rather than boat dives. Some great islands for diving in Taiwan are far from shore, in contrast, it just takes 30 mins from Manado city to Bunaken island. Bunaken has an extraordinary advantage, that is, you can see mangrove, sea grass and coral reef ecosystems in the same island. Taiwan should develop Mandarin dives in sandy and overfishing zones in North Taiwan. In the Muck dive case, the government should protect shellfishes and prohibit fisheries for trawling anymore!
Reference
Kohler, K.E. and S.M. Gill, 2006. Coral Point Count with Excel extensions (CPCe): A Visual Basic program for the determination of coral and substrate coverage using random point count methodology. Computers and Geosciences, Vol. 32, No. 9, pp. 1259-1269
去過大陸，才知道自己身體不好
去過 Bunaken，才知道台灣珊瑚身體不好
Bunaken island , a famous scuba-diving site localtes in North Sulawesi, Indonesia, has been zoned into three different use zones:
1.Core
2.Tourism
3.General use.
In-situ coral reef cover-rate inspections as well as traditional census or random sampling, are not effective to evaluate large-scale undersea drop-offs. However, satellite imaginary experimental measurements are often used to monitor specific region or habitat patches. Therefore, this paper focuses on the use of well-cariberated satellite images to match in-situ survey experimental studies in Bunaken.
First, an attempt was made to determine if actual reef cover was predicted by theoretical spectral models. The substrates were classified as following: superabundant live coral, abundant live coral, common live coral, rubble, seagrass and deep sea. The data showed that algae, spectrally similar to live coral, continue to pose a problem for classification accuracy. This problem will
be controlled by in-situ survey in some selected zones. After image arguments were properly adjusted, the survey data was processed in CPCe software and then the estimated cover rate was generated.
They observed that the overall cover rate in the 3 zones had not changed in obvious ways. That implies that the zonation hypothesis should be further tested for a period more than 3 years to see the long-term effects. The study suggests that decreasing scuba-diving pressure in Bunaken coral reef is indispensable for sustainable use. Also, wastewater from residential use also contributes to seagrass growth in general use zones. What's more, Fukoi suffered from using dynamite.
Many coral reef survey projects show just discreet and small-scale data. In this paper, the survey combined efforts of divers and the satellites will provide more realistic verifications of coral reef status, as well as more solid links between human activity and reef growth.
What can this paper tell us about improving Taiwan coral reef? After visiting Bunaken, I found Taiwan has greater infrastructures than those in Bunaken. However, most coral reefs in Taiwan suffer from human impact. An obstacle to the development of ecotourism in Taiwan is the high labor prices allowing dive shops to controll price by developing coast dive, rather than boat dives. Some great islands for diving in Taiwan are far from shore, in contrast, it just takes 30 mins from Manado city to Bunaken island. Bunaken has an extraordinary advantage, that is, you can see mangrove, sea grass and coral reef ecosystems in the same island. Taiwan should develop Mandarin dives in sandy and overfishing zones in North Taiwan. In the Muck dive case, the government should protect shellfishes and prohibit fisheries for trawling anymore!
Reference
Kohler, K.E. and S.M. Gill, 2006. Coral Point Count with Excel extensions (CPCe): A Visual Basic program for the determination of coral and substrate coverage using random point count methodology. Computers and Geosciences, Vol. 32, No. 9, pp. 1259-1269
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