{"id":2343,"date":"2021-01-24T21:11:57","date_gmt":"2021-01-24T21:11:57","guid":{"rendered":"https:\/\/seapop.no\/?post_type=bc_activity&p=2343"},"modified":"2021-02-24T10:06:35","modified_gmt":"2021-02-24T10:06:35","slug":"grindoya","status":"publish","type":"bc_activity","link":"https:\/\/seapop.no\/en\/activities\/key-sites\/grindoya\/","title":{"rendered":"Grind\u00f8ya"},"content":{"rendered":"\n

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Common eiders at Grind\u00f8ya.<\/strong>
Photo: Sveinn Are Hanssen<\/figcaption><\/figure>\n\n\n\n
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Location and description<\/h3>\n\n\n\n

Store (Large) Grind\u00f8ya (69\u00b0 38′ N, 18\u00b0 51′ E), is a 0.5 km2<\/sup>, flat elongated island with varied vegetation. There are lush grasslands, tall-herb stands, rises covered by crowberries and both open and scrub-covered marshes. Many different vegetation systems are registered on Grind\u00f8ya, including raised bogs and fens, old hayfields, dry meadows, beach meadows and rock-plants. The climate is typical of northern Norway, with quite a lot of precipitation. Mean temperatures in mid-July are approximately 12 \u00b0C and just below -4 \u00b0C in January.<\/p>\n<\/div>\n\n\n\n

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Photo: Sveinn Are Hanssen<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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Access<\/h3>\n\n\n\n

Access to Grind\u00f8ya is relatively easy because of its close proximity to Troms\u00f8ya. Grind\u00f8ya is only 2 km from the southern tip of Troms\u00f8ya. Between 1 May and 30 June, landing is prohibited, except on the beaches on the north and south ends of the island.<\/p>\n<\/div>\n\n\n\n

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Map of Grind\u00f8ysundet Nature Reserve between Kval\u00f8ya og Troms\u00f8ya.<\/strong>
Map: Statens kartverk (Norwegian Mapping Authority)<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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Wildlife<\/h3>\n\n\n\n

The rich bird life at Grind\u00f8ya includes many annual breeders; common eider Somateria mollissima<\/em>, greylag goose Anser anser<\/em>, mallard Anas platyrhynchos<\/em>, red-breasted merganser Mergus serrator<\/em>, willow ptarmigan Lagopus lagopus<\/em>, crow Corvus cornix<\/em>, common snipe Gallinago gallinago,<\/em> whimbrel Numenius phaeopus<\/em>, Eurasian oystercatcher Haematopus ostralegus,<\/em> common gull Larus canus,<\/em> herring gull L. argentatus<\/em>, great black-backed gull L. marinus<\/em>, fieldfare Turdus pilaris,<\/em> redwing T. iliacus<\/em>, brambling Fringilla montifringilla<\/em> og willow warbler Phylloscopus trochilus.<\/em> Other birds breeding regularly but not annually include ruddy turnstone Arenaria interpres,<\/em> common ringed plover Charadrius hiaticula,<\/em> Eurasian woodcock Scolopax rusticola<\/em>, white-tailed eagle Haliaeetus albicilla,<\/em> raven Corvus corax,<\/em> northern pintail Anas acuta,<\/em> Eurasian wigeon A. penelope<\/em>, arctic tern Sterna paradisaea<\/em> and sedge warbler Acrocephalus schoenobaenus.<\/em> There are no rodents at Grind\u00f8ya, but in some years both stoat Mustela erminea<\/em> and American mink Neovison vison<\/em> are present. Eurasian otters Lutra lutra<\/em> are found on the island all year around. Harbour seals Phoca vitulina<\/em> are observed regularly around the island.<\/p>\n\n\n\n

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A variety of bird species breed on Grind\u00f8ya annually.<\/strong>
Photo: Sveinn Are Hanssen<\/figcaption><\/figure>\n\n\n\n

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Human activity<\/h3>\n\n\n\n

Nobody lives on Grind\u00f8ya, but there are three weekend cabins that are sometimes used. Because it is so close to Troms\u00f8, Grind\u00f8ya is popular for day-trippers that arrive by boat and kayak.<\/p>\n<\/div>\n\n\n\n

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Photo: Sveinn Are Hanssen<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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Fieldwork<\/h3>\n\n\n\n

The common eiders breeding on Grind\u00f8ya have been studied annually since 1984, making this the longest continuous time series on marine diving ducks in Norway. Fieldwork takes place from the middle of May until the end of June and consists of nest registration and the catching of females on nest for ringing or to check for rings, as well as weighing and registration of clutch sizes. In some years, blood samples have been taken to measure levels of environmental pollutants. The common eider is interesting because some of the broods are taken over by other females and large flocks of chicks can be guarded by several females. This has also been studied in the fjords around Grind\u00f8ya.<\/p>\n<\/div>\n\n\n\n

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With its long time series, Grind\u00f8ya is a very important monitoring site for the common eider in Norway.<\/strong>
Photo: Sveinn Are Hanssen<\/figcaption><\/figure>\n","protected":false},"featured_media":0,"parent":1409,"menu_order":131,"template":"","scope_type":[11],"class_list":{"0":"post-2343","1":"bc_activity","2":"type-bc_activity","3":"status-publish","5":"scope_type-location"},"acf":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"default":false,"square":false},"uagb_author_info":{"display_name":"Erlend Lorentzen","author_link":"https:\/\/seapop.no\/en\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Location and description Store (Large) Grind\u00f8ya (69\u00b0 38′ N, 18\u00b0 51′ E), is a 0.5 … Les videre \u00abGrind\u00f8ya\u00bb","_links":{"self":[{"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity\/2343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity"}],"about":[{"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/types\/bc_activity"}],"version-history":[{"count":3,"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity\/2343\/revisions"}],"predecessor-version":[{"id":4693,"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity\/2343\/revisions\/4693"}],"up":[{"embeddable":true,"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity\/1409"}],"wp:attachment":[{"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/media?parent=2343"}],"wp:term":[{"taxonomy":"scope_type","embeddable":true,"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/scope_type?post=2343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}