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Table 1 Black bear scat summary results for 2010, 2011, and 2012

From: Novel species interactions: American black bears respond to Pacific herring spawn

Taxa/group Common name FO FV
2010 2011 2012 2010 2011 2012
Phaeophyta Brown algae 48.6 53.1 95.7 2.9 12.6 38.6
 Macrocystis integrifolia Giant kelp 2.9 32.1 72.3 0.6 8.6 25.0
 Egregia menziesii Feather boa kelp 46.8 5.8
 Fucus spp. Rockweed 17.1 18.5 46.8 tr. 0.6 1.8
 Other Laminariales Kelps 45.7 39.5 66.0 1.9 3.4 6.1
Chlorophyta Green algae 2.9 21.0 10.6 tr. 0.7 tr.
Rhodophyta Red algae 21.0 42.6 0.5 0.6
Arthropoda Invertebrates 74.3 39.5 44.7 25.1 7.8 5.5
 Insecta Insects 1.23 tr.
  Coleoptera Beetles 31.4 7.4 19.1 tr. tr. tr.
  Diptera Flies 2.5 2.1 tr. tr.
  Formicidae Ants 2.9 tr.
 Decapoda Crabs 1.2 tr.
  Hemigrapsus spp. Shore crabs 8.6 2.5 tr. tr.
 Talitridae Amphipods 65.7 35.8 51.1 24.5 7.8 5.4
 Cirripedia Barnacles 2.9 tr.
  Lepas spp. Pelagic gooseneck barnacles 2.9 tr.
Mollusca Molluscs 5.7 8.6 8.5 tr. tr. tr.
  Other Mollusca   5.7 4.9 6.4 tr. tr. tr.
  Bivalvia Clams and oysters 1.2 2.1 tr. tr.
  Gastropoda Snails 3.7 tr.
Bryozoa Marine bryozoans 1.2 tr.
Chordata Animals 5.7 21.0 34.0 tr. tr. 1.1
 Clupea pallasii Pacific herring eggs 12.3 34.0 tr. 1.1
 Ursus americanus Black bear hair 5.7 4.9 2.1 tr. tr. tr.
 Aves Feathers 3.7 tr.
Streptophyta Land plants 100 100 100 70.1 75.0 51.4
 Zosteraceae Seagrasses 48.5 58.0 97.9 9.8 18.7 39.5
 Graminoids Grasses and sedges 94.3 63.0 25.5 56.9 50.0 5.9
 Trees and shrubs Needles and wood 77.1 70.3 97.9 1.4 5.4 4.9
 Bryophyta Mosses 2.9 11.1 2.1 tr. tr. tr.
 Forbs   2.9 3.7 2.0 1.0 1.1
Gravel   40.0 48.1 70.2 1.8 2.7 2.7
Garbage   8.6 4.9 4.3 tr. tr. tr.
Taxa/group Common name EDC EDEC
2010 2011 2012 2010 2011 2012
Phaeophyta Brown algae 1.3 8.6 13.2 1.8 9.1 10.3
 Macrocystis integrifolia Giant kelp tr. 5.3 8.4 tr. 5.7 6.6
 Egregia menziesii Feather boa kelp 1.9 1.5
 Fucus spp. Rockweed tr. 0.6 tr. tr.
 Other Laminariales Kelps 1.0 2.1 2.0 1.4 2.2 1.6
Chlorophyta Green algae tr. 0.5
Rhodophyta Red algae tr. tr. tr. tr.
Arthropoda Invertebrates 61.7 22.2 8.4 68.4 19.5 5.4
 Insecta Insects tr. tr.
  Coleoptera Beetles tr. tr. tr. 0.6 tr. tr.
  Diptera Flies tr. tr. tr. tr.
  Formicidae Ants tr. tr.
 Decapoda Crabs tr. tr.
  Hemigrapsus spp. Shore crabs 0.7 tr. 0.9 tr.
 Talitridae Amphipods 60.2 22.1 8.3 66.6 19.3 5.4
 Cirripedia Barnacles tr. tr.
  Lepas spp. Pelagic gooseneck barnacles tr. tr.
Mollusca Molluscs       
  Other Mollusca        
  Bivalvia Clams and oysters       
  Gastropoda Snails       
Bryozoa Marine bryozoans       
Chordata Animals 25.8 62.7 39.2 70.0
 Clupea pallasii Pacific herring eggs 25.8 62.7 39.2 70.0
 Ursus americanus Black bear hair       
 Aves Feathers       
Streptophyta Land plants 36.9 43.2 15.6 28.8 31.7 14.0
 Zosteraceae Seagrasses 5.3 11.6 13.3 9.1 15.8 13.3
 Graminoids Grasses and sedges 30.5 31.0 2.0 19.7 15.9 0.7
 Trees and shrubs Needles and wood       
 Bryophyta Mosses       
 Forbs   1.2 0.7 tr. 1.0 tr. tr.
Gravel        
Garbage        
  1. Reported values represent percent frequency of occurrence (FO), percent faecal volume (FV), percent estimated dietary content (EDC) and percent estimated dietary energy content (EDEC) of dietary items in black bear scats collected in Quatsino Sound, British Columbia in 2010 (n = 35, 7 sites), 2011 (n = 81, 11 sites) and 2012 (n = 47, 11 sites). Items constituting <0.5% are indicated with trace (tr.). Italics text indicates cumulative values for the taxonomic group shown. EDC and EDEC values were not calculated for molluscs, bryozoans, black bear hair, feathers, needles and wood, mosses, gravel or garbage (see “Methods”).