?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4144%2F&rft.title=On+the+Dominance+of+Filamentous+Blue-Green+Algae+in+Shallow+Lakes&rft.creator=Scheffer%2C+M.&rft.creator=Rinaldi%2C+S.&rft.creator=Mur%2C+L.&rft.description=The+algal+community+of+eutrophic+shallow+lakes+is+often+dominated+by+filamentous+cyanobacteria.+In+this+paper+we+follow+two+independent+approaches+to+show+that+this+state+should+be+an+alternative+equilibrium+over+a+range+of+conditions+to+the+state+dominated+by+green+algae+and+diatoms.+First%2C+we+analyze+the+patterns+of+blue-green+dominance+observed+in+the+field%2C+and+show+that+in+view+of+the+dynamical+systems+theory%2C+those+patterns+imply+that+the+algal+community+must+be+a+hysteretic+system.+Then%2C+we+construct+a+minimal+competition+model+to+show+that+hysteresis+should%2C+in+fact%2C+be+expected+from+differences+in+physiology+between+cyanobacteria+and+algae+measured+in+the+laboratory.+The+basic+mechanism+behind+this+is+that+cyanobacteria+are+the+superior+competitors+under+conditions+of+low+light%2C+but+also+promote+such+conditions+as+they+cause+a+higher+turbidity+per+unit+of+phosphorus+than+other+algae.+This+theory+of+hysteresis+explains+why+blue-green+dominance+is+so+resistant+to+restoration+efforts+by+means+of+nutrient+reduction.+It+also+suggests+that+a+shock+therapy%2C+such+as+temporary+flushing%2C+can+suffice+to+get+rid+of+blue-greens.&rft.publisher=WP-94-067&rft.date=1994-08&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4144%2F1%2FWP-94-067.pdf&rft.identifier=++Scheffer%2C+M.%2C+Rinaldi%2C+S.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F253.html%3E%2C+%26+Mur%2C+L.++(1994).++On+the+Dominance+of+Filamentous+Blue-Green+Algae+in+Shallow+Lakes.+++IIASA+Working+Paper.+IIASA%2C+Laxenburg%2C+Austria%3A+WP-94-067+++++