1. Table 5. The matrix of similarities between main North-Atlantic regions (%, resemblance measure – simple
matching).
Iceland
Norway
Svalbard
Greenland
Faroes
Shetland
38.0
64.2
76.0
75.4
72.1
Norway
22.3
33.0
34.6
38.0
Svalbard
77.1
70.9
68.7
Greenland
Faroes
80.4
76.0
81.0
2. Fig.6. Alona werestschagini, Iceland, adult male: photo, postabdomen. Scale 0.1 mm
3. Additional references on the freshwater Crustacea (Cladocera, Copepoda):

Iceland:
Adalsteinsson H (1979a) Seasonal variation and habitat distribution of benthic Crustacea in Lake Myvatn in
1973. Oikos 32:195-201
Adalsteinsson H (1979b) Zooplankton and its relation to available food in Lake Myvatn. Oikos 32:162-194
Ólafsson E, Ingólfsson A, Steinarsdóttir MB (2001) Harpacticoid copepod communities of floating seaweed:
Controlling factors and implications for dispersal. Hydrobiol 453/454:189-200. doi: 10.1023/A:1013196724039
Örnólfsdóttir EB, Einarsson A (2004) Spatial and temporal variation of benthic Cladocera (Crustacea) studied
with
activity
traps
in
Lake
Myvat,
Iceland.
Aquat
Ecol
38:239-251.
doi:
10.1023/B:AECO.0000032059.99310.d3
Steinarsdótti MB, Ingólfsson A (2004) Itunella muelleri (Harpacticoida: Canthocamptidae): a marine species
with preferences for the upper part of the littoral fringe. J Crust Biol 24:440-446. doi: 10.1651/C-2468
Steinarsdóttir MB, Ingólfsson A, Ólafsson E (2003) Seasonality of harpacticoids (Crustacea: Copepoda) in a
tide
pool
in
subarctic
south-western
Iceland.
Hydrobiol
503:211-221.
doi:
10.1023/B:HYDR.0000008489.41581.d7
the Faroes:
Christoffersen K (2002) Previous studies of freshwater biota in Faroese lakes. Ann Soc Scient Faroensis Suppl
36:7-13
Enckell H (1969) Distribution and dispersal of Parastenocaridae (copepoda) in northern Europe. Oikos 20:493507
Jensen F (1987) Notes on the benthic stream fauna of the Faroe Islands. Nat Jutlandica 22:73-80
Lauridsen TL, Hansson L-A (2002) The zooplankton community of five Faroese lakes. Ann Soc Scient
Færoensis Suppl 36:70-78
Malmquist HJ, Ingimarsson F, Jóhannsdóttir EE, Ólafsson JS, Gíslason GM (2002) Zoobenthos in the Littoral
and Profundal Zones of Four Faroese Lakes. Ann Soc Sci Færoensis Suppl 36:79-93

Shetland:
George DG, Maitland PS (1984) The fresh waters of Shetland: physical and morphometric characteristics of
lochs. Freshw Biol 14:95-107. doi: 10.1111/j.1365-2427.1984.tb00025.x
Scott T, Duthie R. The inland waters of the Shetland islands. Ann Rep Fish Board Scotland 1894, 1895, 1896,
1897
Shetland Biodiversity Audit (1999) Patrick Steer (ed) Shetland Amenity Trust, London.

Svalbard:
Amren H (1964a) Ecological and taxonomical studies on zooplankton from Spitsbergen. Zool Bidr Uppsala
36:209-276
Amren H (1964b) Ecological studies on zooplankton populations in some ponds on Spitsbergen. Zool Bidr
Uppsala 36:161-191
Coulson S (ed) (2012) The terrestrial and freshwater invertebrate fauna of Svalbard: an inventory and
bibliography. Norsk Polarinstitutt Skrifter, Tromsø.
Halvorsen G, Gullestad N (1976) Freshwater Crustacea in some areas of Svalbard. Arch Hydrobiol 78:383–395
Husmann S, Jacobi HU, Meijering MPD, Reise B (1978) Distribution and ecology of Svalbard's Cladocera.
Verh Internation Verein Limnol 20:2452-2456
Janiec K (1996) The comparison of freshwater invertebrates of Spitsbergen (Arctic) and King George Island
(Antarctic). Pol Polar Res 17:175-204
Jørgensen I, Eie JA (1993) The distribution of zooplankton, zoobenthos and fish in lakes and ponds of the
Mosself peninsula, Svalbard. NINA Forskrapp 45:1-25 NINA. NINA, Trondheim
Kotwicki L (2002) Benthic Harpacticoida (Crustacea, Copepoda) from the Svalbard archipelago. Pol Polar Res
23:185-191
Kubicek H, Terek J (1991) Zooplankton of Svalbard (Spitsbergen). Biologia 46:873-879
Meijering MPD (1979) Life cycle, ecology and timing of Macrothrix hirsuticornis Norman et Brady
(Cladocera, Crustacea) in Svalbard. Polarforschung 49:157-171
Mielke W (1974) Eulitorale Harpacticoidea (Copepoda) von Spitsbergen. Mikrofauna Meeresbodens 37:161210
Oloffson O (1918) Studien űber den sűsswasser Fauna Spitzbergens.Beitr z SystematikBiol u Tiergeogr der
Crustaceen u Rotatorien. Zool Bird Uppsala 6:183-648
Richard J (1897) Entomostracés recueillis par M Ch Rabot à Jan Mayenet au Spitzberg. B Soc Zool Fr 22:193198
Samchyshyna L, Hansson L-A, Christoffersen K (2008) Patterns in the distribution of Arctic freshwater
zooplankton related to glacial history. Polar Biol 31:1427-1735. doi: 10.1007/s00300-008-0482-4
Scourfield DJ (1897) Contributions to the non-marine fauna of Spitsbergen. Part I Preliminary notes and reports
on the Rhipozoda Tardigrada Entomostraca. C Proc Zool Soc Lond 784-792
Summerhayes VS, Elton CS (1923) Contributions to the ecology of Spitsbergen and Bear Island. J Ecol 11:214286
Szymelfenig M, Kwagniewski S, W¢stawski JM (1995) Intertidal zone of Svalbard.Meiobenthos density and
occurrence. Polar Biol 15:137-141
Thomasson K (1959) Zur Plankton kunde Spitzbergens. Hydrobiologia 12:226-236
Walkusz W, Storemark K, Skau T, Gannefors C, Lundberg M (2003) Zooplankton community structure; a
comparison of fjords, open water and ice stations in the Svalbard area. Pol Polar Res 24:149-165
Wojtasik B, Kur J (2007) Size differences between individuals of Nannopus palustris Brady, 1880 (Crustacea,
Harpacticoida, Huntemannidae) from tidal flats on Spitsbergen. Oceanol Hydrobiol St 36(4):97-108

Greenland:
Bennike O (2000) Palaeoecological studies of Holocene lake sediments from west Greenland. J Palaeogeogr
Palaeoclimatol 155:285-304. doi: 10.1016/S0031-0182(99)00121-2
Bennike O, Björck S, Böcher J, Walker IR (2000) The Quaternary arthropod fauna of Greenland: a review with
new data. Bulletin of the Geological Society of Denmark 47:111-134
Böcher J (2002) Insekter og andres mådyr. I Grønlands tjeldogferskvand Forlaget Atuagkat, Nuuk
Frey DG (1991) First fossil records of Daphnia headshields and shells (Anomopoda, Daphnidae) about 10 000
years old from northernmost Greenland, plus Alona guttata (Chydoridae). J Paleolimnol 6:193-197. doi:
10.1007/BF00233071
Jeppesen E, Christoffersen K, Landkildehus F, Lauridsen T, Amsinck SL, Riget F, Søndergaard M (2001) Fish
and crustaceans in northeast Greenland lakes with special emphasis on interactions between Arctic charr
(Salvelinus alpinus), Lepidurus arcticusand benthic chydorids. Hydrobiologia 442:329-337.doi:
10.1023/A:1017508211819
Lauridsen TL, Jeppesen E, Landkildehus F, Søndergaard M (2001) Horizontal distribution of cladocerans in
arctic Greenland lakes – impact of macrophytes and fish. Hydrobiologia 442:107-116. doi:
10.1023/A:1017517919996
Lütken CF (1875) List of Crustacea, known from Greenland. In: Jones TR (ed) Manual and instructions for the
Arctic Expedition (vol 2). Pst, London, pp 146-165
Madsen H (1940) A study of the littoral fauna of Northwest Greenland. Meddelelserom Grønland, 124:1-24
Røen UI (1962) Studies on Freshwater Entomostraca in Greenland II. Localities, ecology and geographical
distribution of the species. Meddr Groenland 170:1-249
Røen UI (1987) Chydorus arcticus n. sp., a new cladoceran crustacean (Chydoridae: Chydorinae) from the
North Atlantic Arctic and Subarctic areas. Hydrobiologia 143:125-130. doi: 10.1007/BF02530272
Røen UI (1988) Remains of early glacial Cladocera from North Greenland.Verhandlungen der Internationalen
Vereinigung für theoretische und angewandte Limnologie 32:845–847
Weider LJ, Hobaek A, Crease TJ, Stibor H (1996) Molecular characterization of clonal population structure and
biogeography of Arctic apomictic Daphnia from Greenland and Iceland. Mol Ecol 5:107–118. doi: 10.1111/j.1365294X.1996.tb00296.x

Norway:
Aagaard K, Dolmen D (eds) (1996) Limnofauna Norvegica. Katalog over norskferskvannsfauna.
Tapir forlag, Trondheim.
Oug E, Brattegard T, Vader W, Christiansen ME, Walseng B, Djursvoll P (2010) In: Kålås JA, Viken Å,
Henriksen S, Skjelseth S (eds) Krepsdyr Crustacea. Norsk Rødliste for arter 2010. The 2010 Norwegian Red
List for Species Arts data banken, Trondheim, pp 209-221
Schartau AK, Halvorsen G, Walseng B (2007) Northern Lakes Recovery Study (NLRS) – microcrustaceans.
Reference conditions, acidification and biological recovery. NINA Rapport 235. NINA, Trondheim
Walseng B (1994) Alona spp. in Norway: Distribution and ecology. Verh Internat Verein Limnol 25:2358-2359