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GCNs and salinity tolerance: |
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Peter Stronach Member Joined: 18 Jan 2006 No. of posts: 1  View other posts by Peter Stronach |
Posted: 19 Jan 2006 A request for information regarding the salinity of GCN breeding habitat. I want to know whether there is a threshold value of salinity above which GCNs will not use a waterbody, or whether there is a value for GCN mortality associated with salinity. All the information i have found so far is very subjective and there are many sweeping statements which have no scientific evidence to back them up. A number of people have mentioned populations of GCN in brackish pools to me, but unfortunately no salinity tests were done. I would be very grateful for any information anybody has regarding the subject, whether it be publications, papers or first hand experience of GCNs using waterbodies with a high saline content. thank you Peter Stronach Peter Stronach Consultant Ecologist RPS Cambridge |
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timbadger Member Joined: 15 Dec 2005 No. of posts: 19  View other posts by timbadger |
Posted: 21 Jul 2008 I dont know of any records of GCN in high salinity, however in Cambridgeshire there is Orton Pit Site of Special Scientific Interest / Special Area of Conservation. Which has slightly raised levels of salinity (although no recent recordings) which fluctuates and they have large numbers of GCN. I know on the continent more research has been done into this but i am not finding getting the papers easy. Dont think that really helped you but I thought it was interesting. |
- GCNs and salinity tolerance |