Ralph and Miller 



Chapter 33 



Offshore Population Estimates in California 



Table 1 Survey effort, densities, and numbers of Marbled Murrelets in coastal waters of California , 1989-1993 



Northern boundary 

 of coastal section 

 (see fig. 2) 



No. 2-km 

 coastal 



1400m 



800m 



No. 



segments segments 

 surveyed 



No. 



No. No. 



survey segments survey 



days surveyed days 



No. birds No. birds Total 

 per km 2 per birds 



segment (estimate) 

 (12km 2 ) 



(pet. 

 total) 



Point St. George 

 Crescent 1 

 Nickel Creek 

 Klamath River 

 Big Lagoon 

 Trinida 

 Mad River 

 Humboldt Bay 



Table Bluff 



False Cape Mendocino 



Cape Mendocino 



Shelter < 



Cape Vizcaino 



Fort Bragg 



Albion 



Point Arena 



Fish Rock 



Bodega Bay 



Point Reyes 



Golden Gate' 



Half Moon Bay 



Davenport 



Santa Cruz 



Moss Landi 



Monterey Bay 



9 



20 

 9 



I 



13 

 4 



11 



4 



29 



16 



B 

 15 



14 

 10 

 41 

 20 

 29 



17 

 35 

 11 

 17 







12 



156 



110 



210 



159 



92 



30 



265 



177 



275 



197 



17 



33 



17 



9 

 57 

 11 



14 



12 



42 

 55 

 24 

 12 

 13 

 10 

 26 

 46 

 16 



I 



7 



5 



172 

 164 



227 



108 



97 



29 



272 



170 



282 



12 



90 



50 



30 



22 



3 







42 



14 

 33 



5 



18 



12 



46 

 57 

 23 

 II 

 14 

 10 

 28 

 47 



15 

 4 

 6 

 5 



9 



2 

 1 





 2 



1.98 

 3.71 

 4.60 

 5.43 

 8.81 

 4.35 

 2.17 

 2.48 



2.59 



1.50 



1.16 



0.72 



0.72 



0.67 















1.82 

 



23.75 

 44.50 

 55.22 

 65.15 

 105.67 

 52.25 

 26.07 

 29.75 



31.09 

 18.00 

 13.93 

 8.60 

 8.69 

 8.00 

 

 

 



^^^^ 





 

 



21.80 

 



95 



12.7 



89 



497 



1303 



951 



418 



339 



119 



342 



72 



404 



172 



139 



120 



























763 

 



9.3 



39.9 



132.0 



159.7 



72.8 



19.3 



14.9 









 



21.9 

 16.2 

 50.4 

 15.7 

 16.6 

 13.8 

























 125.5 



















13.3 



10.5 



8.0 



10.1 



16.8 



17.4 



5.7 

 12.5 



6.4 

 22.6 

 12.5 



9.2 

 11.9 

 11.5 

























 16.5 











'No surveys were conducted from Point Bonita to Golden Gate. 



356 



USDA Forest Service Gen. Tech. Rep. PSW-152. 1995. 



