{"id":2350,"date":"2021-01-24T19:05:51","date_gmt":"2021-01-24T19:05:51","guid":{"rendered":"https:\/\/seapop.no\/?post_type=bc_activity&p=2350"},"modified":"2021-02-25T09:03:25","modified_gmt":"2021-02-25T09:03:25","slug":"sor-helgeland","status":"publish","type":"bc_activity","link":"https:\/\/seapop.no\/en\/activities\/key-sites\/sor-helgeland\/","title":{"rendered":"S\u00f8r-Helgeland"},"content":{"rendered":"\n
\"\"<\/a>
View of Horsv\u00e6r from the highest point on Storandholmen.<\/strong>
Photo: Jan Ove Bustnes<\/figcaption><\/figure>\n\n\n\n

The counting led by the monitoring programme was carried out annually until 2007. This work resulted in the current programme that was started in 2005, and in 2007, the area was defined as a SEAPOP key site. Horsv\u00e6r was protected in 2002.<\/p>\n\n\n\n

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Location and description<\/h3>\n\n\n\n

Horsv\u00e6r (65\u00b0 18\u2032 36\u2033 N, 11\u00b0 38\u2032 24\u2033 E) is divided into South- and North-Horsv\u00e6r. The archipelago includes both flat islands with significant vegetation and rocky islets. The vegetation is typical for the coastal landscape in this region with different grass species. Meadowsweet is an important plant on several of the islands, especially on Bu\u00f8ya, where the meadowsweet meadow is the most important breeding habitat for lesser black-backed gull Larus fuscus<\/em>.<\/p>\n<\/div>\n\n\n\n

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\"\"<\/a>
Map showing Horsv\u00e6r with the different colonies of lesser black-backed gull Larus fuscus.<\/em><\/strong>
Photo: Jan Ove Bustnes<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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Access<\/h3>\n\n\n\n

It is only possible to reach Horsv\u00e6r by boat.<\/p>\n<\/div>\n\n\n\n

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Boats have been used as field stations at Horsv\u00e6r.<\/strong>
Photo: Jan Ove Bustnes<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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Wildlife<\/h3>\n\n\n\n

Horsv\u00e6r was protected because of its seabirds, and the colony of lesser black-backed gull is important. In good years, up to 400 pairs breed in 7-8 sub-colonies have been counted although the numbers vary a lot from year to year. In 2013, there were only 18 nests in the entire colony.<\/p>\n\n\n\n

Horsv\u00e6r is also a very important breeding area for many other gulls species including common gull Larus canus<\/em>, herring gull L. argentatus<\/em> and great black-backed gull L. marinus<\/em>. In addition, there is a significant cormorant colony Phalacrocorax carbo<\/em> in the middle of the archipelago where hundreds of pairs regularly breed.<\/p>\n<\/div>\n\n\n\n

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\"\"<\/a>
Hundreds of cormorants Phalacrocorax carbo<\/em> and some European shags P. aristotelis<\/em> breed among the ruins of an old fish factory.<\/strong>
Photo: Jan Ove Bustnes<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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Human activity<\/h3>\n\n\n\n

There is no permanent habitation on Horsv\u00e6r and because it is protected, human activity is low and mostly around the settlement. On South-Horsv\u00e6r, the landowners are allowed to run sheep, and a herd grazes there in summer<\/p>\n<\/div>\n\n\n\n

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\"\"<\/a>
The houses on Horsv\u00e6r are still maintained and used as holiday homes.<\/strong>
Photo: Jan Ove Bustnes<\/figcaption><\/figure>\n\n\n\n

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Fieldwork<\/h3>\n\n\n\n

Detailed population studies of the lesser black-backed gull have been conducted annually since 2005. This includes a fieldwork period from June to the end of July to ring gull chicks. The fieldworkers collect data to calculate adult survival, clutch size, recruitment and breeding numbers of lesser black-backed gulls, as well as take diet samples. Numbers of nests of common gulls, herring gulls and cormorants are also monitored.<\/p>\n<\/div>\n\n\n\n

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\"\"<\/a>
In good years up to 400 lesser black-backed gulls breed at Horsv\u00e6r.<\/strong>
Photo: Jan Ove Bustnes<\/figcaption><\/figure>\n<\/div>\n<\/div>\n","protected":false},"featured_media":0,"parent":1409,"menu_order":140,"template":"","scope_type":[11],"class_list":{"0":"post-2350","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":"The counting led by the monitoring programme was carried out annually until 2007. This work … Les videre \u00abS\u00f8r-Helgeland\u00bb","_links":{"self":[{"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity\/2350","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\/2350\/revisions"}],"predecessor-version":[{"id":4822,"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/bc_activity\/2350\/revisions\/4822"}],"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=2350"}],"wp:term":[{"taxonomy":"scope_type","embeddable":true,"href":"https:\/\/seapop.no\/en\/wp-json\/wp\/v2\/scope_type?post=2350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}