Pressure

The Pressures Influencing the Survivorship of the Uca formosensis Populations

The pressure of predation

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Fig. 42. A male Uca formosensis was preyed by a Helice.

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Fig. 43. A small male Uca formosensis plunged his major cheliped in the leg of a Helice which attacked him.

The change of habitat

The negative impact of mangrove

The damage caused by typhoons

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Fig. 44. Most crabs on the mudflat of the estuary of Putzu Creek died because a lot of mud covered this habitat after a typhoon.

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Fig. 45. The habitat of the estuary of Pachang Creek was disappeared because the creek was flooded by a typhoon.

The damages made by human

Capture

The pressure of development

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Fig. 46. The highway construction is beside the habitat of Uca formosensis of Haishanku, the mudflat is planned to be filled by soil for building an industrial park in the future.

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Fig. 47. A landfill is building on the habitat of Uca formosensis of Shenkang. Due to this construction, not only the population of Uca formosensis of this area will be destroyed completely, but also the habitat of waterfowls near by.

Fig. 48. The illegal fish farms of Chingtsaolun have displaced a habitat with a large population of Uca formosensis recently.

Fig. 49. Uca formosensis had chosen Taiwan as their habitat since millions of years ago. Their life style and behavior, such as chimney building, had been accustomed from generation to generation. However, due to the greed of human and the pressure from industrial development, Uca formosensis was forced to become endangered in this "beautiful island". When is the concept of "balanced nature" going to be rooted in people's mind?

Fig. 50. Does the image of the high-tension pylons and landfill of Shenkang at sunset imply the future of Uca formosensis in Formosa? It is very likely to be destroyed by the present Taiwanese generation.

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