Helgoland Marine Research

Table 2 Diet composition and frequency (%) of food items recorded for polychaete species

From: Breadth and composition of polychaete diets and the importance of diatoms to species and trophic guilds

Species	Cspp	Cf	Da	Ec	Hf	Ip	Lc
Item
Macrophyte detritus		7.69		75		13.64	26.23
Macroalgae fragment				25			1.64
Foramnifera		5.77				9.09	13.11
Radiolaria		3.85			5.13	18.18	1.64
Ciliophora						4.54	9.84
Pteropoda			66.67
Harpacticoida		1.92
Ostracoda							1.64
Crustacean Fragment							6.56
Egg		3.85	33.33			9.09
Centric planktonic diatom
Bacillaria sp.						9.09
Bacillaria paxillifera	2.38	5.77			7.69
Coscinodiscus sp.	9.52	17.31	33.33		12.82	31.82	6.56
Coscinodiscus nodulifer			33.33
Pinullaria sp.		5.77
Thalassiosira eccentrica		1.92	33.33		5.13	9.09
Triceratium sp.		1.92				4.54
Triceratium alternans
Triceratium favus			33.33			4.54
Centric benthic diatom
Biddulphia sp.	2.38	15.38		25	15.83	31.82	18.03
Biddulphia pulchella						4.54
Melosira sp.	2.38			25		22.72	9.84
Melosira moliniformis	2.38
Melosira sulcata						4.54
Odontella aurita					2.56
Pennate planktonic diatom
Rhabdonema sp.					2.56
Pennate benthic diatom
Amphiophora sp.		5.77
Climacosphenia moniligera		1.92
Grammatophora marina		11.52		25	2.56	4.54
Gyrosigma sp.						4.54	1.64
Licmorpha sp.		3.85				13.64
Licmorpha abbreviata		7.69
Navicula sp.	7.14	9.26	33.33	25	10.26	27.27	31.15
Navicula membranacea		3.85	33.33	25	12.82	45.45
Nitzchia sp.	2.38		33.33			9.09
Nitzchia longissima		1.92				13.64	1.64
Nitzchia paradoxa		1.92
Nitzchia bilobata						4.54
Plagiogramma sp.						9.09
Pleurosigma sp.		7.69			2.56	27.52
Surirella fastuosa	4.76	13.46	33.33	25	2.56	31.82	1.64

Species	Ms	Nh	Ns	Nl	Of	Sd	Ss
Item
Macrophyte detritus	16.67		28	8.33	36.67		5.21
Macroalgae fragment	16.67				6.67		1.04
Dinoflagellata					6.67
Foramnifera		5.26	8		13.33	5.88	58.33
Radiolaria		5.26	4		26.67		3125
Bivalvia							1.04
Bryozoa					6.67
Centric planktonic diatom
Bacillaria paxillifera					20
Chaetocerus sp.					6.67
Coscinodiscus sp.	33.33		4		50	5.88	3.12
Coscinodiscus nodulifer					3.33
Hemidiscus cuneiformis					3.33
Thalassiosira eccentrica					10
Triceratium alternans					10
Triceratium favus					10
Centric benthic diatom
Biddulphia sp.	50	5.26	8	16.67	43.33	5.88
Biddulphia pulchella			4		6.67
Melosira sp.					23.33		1.04
Melosira moliniformis	16.67				3.33
Melosira sulcata	16.67				3.33	5.88
Odontella aurita			4			5.88
Pennate planktonic diatom
Striatella sp.					3.33	5.88
Thalassiothrix sp.			4		6.67
Pennate benthic diatom
Achantes sp.					3.33
Amphiophora sp.					3.33
Climacosphenia moniligera					6.67
Grammatophora marina			4	8.33	33.33	11.76
Gyrosigma sp.					3.33
Licmorpha sp.					23.33
Licmorpha abbreviata			4		43.33	5.88
Navicula sp.	33.33		4	16.67	56.67		2.08
Navicula membranacea				8.33	20	5.88	1.04
Nitzchia sp.					20	5.88
Nitzchia longissima			4		40	11.76
Nitzchia paradoxa					3.33
Nitzhia seriata					3.33
Plagiogramma sp.					3.33
Pleurosigma sp.			4		46.67	5.88
Surirella fastuosa		5.26	4	8.33	63.37	11.76	1.04

Frequency equals the number of guts a food item was found in relation to total filled guts. Number of guts and species labels are according to Table 1

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