Náttúrufræðingurinn

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Náttúrufræðingurinn - 2002, Qupperneq 21

Náttúrufræðingurinn - 2002, Qupperneq 21
ENGLISH SUMMARY The BIRD LIFE OF BORGAREY/AR AND Borgarskarfasker in Borgarfjördur In summer 2000, a complete survey was under- taken of the bird life of Borgareyjar (three small islets) and Borgarskarfasker (five skerries) in Borgarfjörður, West-Iceland (Figs 1 and 2). A survey of these bird islands had never been car- ried out before. Only very limited and incidental information is available from former years. Eleven bird species were found breeding on the islands, altogether about 4,000 pairs. By far the most numerous species was Puffin with about 3,800 pairs (Fig. 3). Puffin and Kittiwake numbers were estimated using “Apparently Oc- cupied Nest-site” as the counting unit (cf. Nettleship 1976). The numbers of each species are shown in Tab. 1. Prior to the survey Shag and Kittiwake had not been known to breed on these islands during past decades. However, Shag bred there till around 1930 (Einar Friðgeirsson [ —1921—1928], Asgeir Bjarnason 1938, Arnþór Garðarsson 1979, Ævar Petersen and Sigurður Ingvarsson 1995). Fulmar was breeding in 1975 but prob- ably started only a few years earlier. The state- ment by Bjarni Sæmundsson (1934) as to the breeding of Fulmars on Borgareyjar is obviously erroneous. The first account of Eiders breeding stems from 1570 (íslenskt fornbréfasafn XV) and Puffins have probably nested there for cen- turies. Greylag Goose, Mallard, and Red-breasted Merganser nest on the islands, in association with the seabirds, especially where lyme-grass Leymus arenarius covers the census area, as on Borgareyjar. The Great Black-backed Gull and the Black Guil- lemot have probably nested on these islands for centuries. Lesser Black-backed Gulls were re- corded from these islands for the first time during the present survey. They have bred in this general region for only some two decades and have been increasing continuously (Ævar Petersen 1998, Kristinn H. Skarphéðinsson 2000). ■ ÚTGEFNAR HEIMILDIR/ PUBLISHED SOURCES Arnþór Garðarsson 1979. Skarfatal 1975. Náttúrufræðingurinn 49(2-3). 126-154. Arnþór Garðarsson 1996. Ritubyggðir. Bliki 17. 1-16. Árni Magnússon og Páll Vídalín 1709 (1925 & 1927). Jarðabók Árna Magnússonar og Páls Vídalíns. 4. bindi. Hið íslenska Fræðafjelag, Kaupmannahöfn. 498 bls. Ásgeir Bjarnason 1938. Annálar Mýramanna (Þættir Ásgeirs Bjarnasonar frá Knarramesi). Bls. 107-134 f: Héraðssaga Borgarfjarðar II. Reykjavík. 337 bls. Bjarni Sæmundsson 1934. Zoologiske Med- delelser fra Island. XVI. Nogle ornithologiske iagtagelser og oplysninger. Videnskabelige Meddelelser 97. 25-86. Búnaðarsamband Borgarfjarðar 1993. Byggðir Borgarfjarðar III. Mýrasýsla og Borgarnes. 423 bls. Fasteignabók 1942 (1942-1944). Reykjavík. xii+108 bls. Fiskiskýrslur og hlunninda 1925-1927. [Upp- lýsingar um fýlaveiði]. Hagskýrslur Islands 43, 47 og 50. Hagstofa Islands, Reykjavík. íslenskt fornbréfasafn (Diplomatarium Island- icum) XV: 618. Johnsen, J. 1847. Jarðatal á íslandi, (með brauðalýsingum, fólkstölu í hreppum og prestaköllum, ágripi úr búnaðartöflum 1835- 1845, og skýrslum um sölu þjóðjarða á landinu). Kaupmannahöfn. xvi+468 bls. Jón Helgason 1967. Hundrað ár í Borgarnesi. Iðunn, Reykjavík. 352 bls. Kristinn B. Gíslason 1995. Þegar minkurinn nam land í Breiðafjarðareyjum og afleiðingar þess. Breiðftrðingurinn 53. 53-58. Kristinn H. Skarphéðinsson 2000. Fuglalíf í Mýrasýslu. Bliki 21. 15-30. Kristín Ólafsdóttir 1939. Örnefni í túni og högum í Rauðanesi á Mýrum. Blanda VI. 392- 398. Lúðvík Kristjánsson 1986. íslenzkir sjávar- hættir V. Bókaútgáfa Menningarsjóðs, Reykjavík. 497 bls. Nettleship, D.N. 1976. Census techniques for seabirds of Arctic and eastern Canada. Cana- dian Wildlife Service Occasional Paper no. 25. 31 bls. Ólafur Pálsson 1859. Brauðamat á Islandi 1854. Bls. 430-543 og 593-851 í: Skýrslur um landshagi á íslandi. 2. bindi. Kaupmannahöfn. Sigurður Stefánsson 1917. Æðarvarp að fornu og nýju. Búnaðarrit 31(1-2). 1-61. Sveinn Níelsson 1869 (1950). Prestatal og prófasta á íslandi. 2. útg. með viðaukum og breytingum eftir Hannes Þorsteinsson. Björn Magnússon sá um útgáfuna og jók við. Hið íslenzka bókmenntafélag, Reykjavík. xviii+396 bls. Ævar Petersen 1998. íslenskir fuglar. Vaka- Helgafell, Reykjavík. 312 bls. 195
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