8a: Quoting, Paraphrasing, and Summarizing

Select a passage of several sentences from an online source related to your topic. Copy and paste the passage into your blog post and create a link to the page where you found it.

1. Write a paragraph incorporating a short quotation from the passage.  Modify the quotation using an ellipsis and brackets.
2. Paraphrase the passage. Check your paraphrase carefully to make sure that it is accurate and appropriate.
3. Summarize the passage. Check your summary carefully to make sure that it is accurate and appropriate.

http://oak.ucc.nau.edu/jcm22/pdfs/Marks%202007%20Sci%20Am.txt

 A major problem that dams face when the age is sediment build-up.  When the dams are being removed all build -up is being released it has been known to cause all kinds of  ecological problems. Specifically according to Redfield-Wilder "...  sediments trapped behind a dam's walls can choke waterways, muddying the environment and wiping out insects and algae..."  The sediments decrease the amount of free oxygen and available water for plants and animals.  This dramatic change in environment can cause them to die.   

BIOLOGISTS have also recorded unexpected problems. The release of sediments  trapped behind a dam's walls can choke waterways, muddying the environment and  wiping out insects and algae, which are important food for fish. This wave of  turbidity can also eliminate habitat for sessile filter feeders, such as  freshwater mussels. Sometimes the mud that had been held back by the structures  is rife with contaminants. When engineers removed the Fort Edward Dam on the  Hudson River in 1973, concentrations of PCBs rose in downstream fish and  remained high for many years; even today the striped bass fishery remains closed  because of high levels of PCBs. Sediments that are not washed downstream can become problematic as well. As they  dry out, they may provide fertile ground for potentially noxious exotic plants  whose seeds they harbored. Eurasian reed canary grass--which homogenizes  wetlands by outcompeting native plant species--grew explosively after  Wisconsin's Oak Street Dam fell, even though restoration scientists had seeded  the area with native prairie plant species. 
A release of sediments can cause lots of problems. The sediment itself can cause damage to native algae and insects.   The turbidity can also hold contaminants which can harm the surrounding soil and killing plants. 

Sediment removal can harm the surrounding ecology in a stream.