模仿游戏迅雷1080p资源:帮忙翻译几句话

其实主要是一些词和短语翻不出来，为了方便各位翻译，我把原句也写上了。烦劳各位费心，能翻译出一个词也好啊。
(1)Biologists speculate that the abundance of vegetation at Tres Rios may attract the clapper rail, an endangered specie. “clapper rail”是什么？查不到。
(2)Fish-eating birds such as blue herrings, night herrings and egrets stalk the edges of the deep pools seeking fish. “blue herrings”和“night herrings”是什么动物？
(3)The site is located on National Forest Service Land.“National Forest Service Land”好像是一个部门的名称，中文怎么说？
(4)Two government agencies, the USFS and Arizona Game and Fish, teamed up with the city to construct the wetlands, a partnership that continues today.“Arizona Game and Fish”——亚利桑那州怎么有这么个奇怪的组织？总不能翻译成“亚利桑那州比赛（或游戏）和鱼”吧？
(5)The effluent then enters the wetlands treatment system which includes polishing ponds, lakes, open channels, riparian areas and marshes.“polishing pond”是“抛光塘”吗？没听说有这么个东西啊。
(6)Cattail, water grass, spike rush and various sedges established naturally in the wetlands.“spike rush”是什么？
(7)Successful plantings include hardstem, softstem and alkali bulrushes and sego pondweed.这包括的都是什么呀？
(8)Its public use plan includes a paved trail for handicapped access and a viewing blind that accommodates 50 students.“a viewing blind that accommodates 50 students”怎么翻译？
谢了，辛苦哇。