Náttúrulegt birkilendi á Íslandi er kortlagning yfir alla náttúrulega birkiskóga og birkikjarr á Íslandi. Helstu upplýsingar eru hæð, þekja og aldur. Skilið er á milli núverandi hæðar og aldur fullvaxta birkis. Það er gert samkvæmt alþjóðlegum skilgreiningum um hæð trjágróðurs þar sem miðað er við hæð fullvaxta skógar. Birki var fyrst kortlagt á árunum 1972-1975 og var unnin leiðrétting á gögnunum og gerðar frekari greiningar á árunum 1987-1991. Gögnin voru því komin nokkuð til ára sinna þegar ákveðið var að hefja endurkortlagningu á öllu náttúrulegu birki á Íslandi. Fór sú vinna fram á árunum 2010-2014 og er núverandi þekja því afrakstur þeirrar vinnu. Flatarmál náttúrulegs birkis á Íslandi er 150.600 ha. Frá árinu 1987 hefur flatarmál birkis með sjálfsáningu aukist um 9% og nemur 13.000 ha. Gögnin voru upphaflega hugsuð fyrir mælikvarða 1:15.000, hins vegar var talsvert stór hluti landsins kortlagður í mælikvarða 1:5000 – 1:10.000.

The National Ecological Framework for Canada's "Surficial Geology by Ecoprovince” dataset contains tables that provide surficial geology information with the ecoprovince framework polygons. It provides codes that characterize surficial geology (unconsolidated geologic materials) and their English and French-language descriptions as well as information about the area and percentage of the polygon that the material occupies.

The National Ecological Framework for Canada's "Soil Development by Ecodistrict” dataset contains tables that provide soil development information for components within the ecodistrict framework polygon. It provides soil development codes and their English and French-language descriptions as well as the percentage of the polygon that the component occupies. The soil development descriptions are based on the second edition of the Canadian System of Soil Classification (Agriculture Canada Expert Committee on Soil Survey, 1987).

The National Ecological Framework for Canada's "Land Cover by Ecodistrict” dataset provides land cover information within the ecodistrict framework polygon. It provides landcover codes and their English and French language description as well as information about the percentage of the polygon that the component occupies.

The National Ecological Framework for Canada's "Surficial Geology by Ecoregion” dataset contains tables that provide surficial geology information with the ecoregion framework polygons. It provides codes that characterize surficial geology (unconsolidated geologic materials) and their English and French-language descriptions as well as information about the area and percentage of the polygon that the material occupies.

The National Ecological Framework for Canada's "Land and Water Area by Province/Territory and Ecoregion” dataset provides land and water area values by province or territory for the Ecoregion framework polygon, in hectares. It includes codes and their English and French descriptions for a polygon’s province or territory, total area, land-only area and large water body area.

Dreifing hvítabjarna sem sést hafa á Íslandi í mismunandi mælihvarði. Þekja ni_G500v_hvitabjorn, punktalag. [Distribution of polar bear sightings in Iceland in different scales. Point layer ni_G500v_hvitabjorn.] Ekki er hægt að tala um hvítabirni sem íslenska tegund en þó hafa þeir tekið hér land af og til og teljast því til flökkudýra. Upplýsingar eru til um rúmlega 560 hvítabirni sem skráðir hafa verið hérlendis frá upphafi landnáms. Síðast varð vart við hvítabjörn við Höfðaströnd í Jökulfjörðum 2024. Viss ónákvæmni er þarna um að ræða því vafalaust hafa einhver dýr gengið hér á land án þess að menn hafi haft þar vitneskju um eða skráð sérstaklega. [Polar bears are not native to Iceland, although they do occasionally turn up in Iceland and are thus classified as vagrants. Information exists on just over 560 polar bears recorded as having arrived in Iceland from the beginning of human settlement on the island to the present day. This is a somewhat imprecise figure, since polar bears have undoubtedly come ashore without their presence going noticed, while bear sightings and encounters were not always documented in the past. The last polar bear observation was at Höfðaströnd, Jökulfjörður, Westfjords, in 2024. Table entries are in Icelandic.] Nákvæmni tíma [Accuracy of time]: varies depending on the source. If only the year of the sighting is known, you find this year under fitjueigindi 'ártal 1' (artal1). In case there are more details known, there are as well entries for fitjueigindir 'dags hvítabjarnakomur' (dagsHvitabjarnakomur) or 'ártið' (artid). If the year is not quite definit, there is an entry in fitjueigindi 'um' (um). Entries in both fitjueigindir 'ártal 1' and 'ártal 2' (artal1, artal2) define a timespan for the sighting. Nákvæmni staðarins [Accuracy of location]: varies depending on the source. All sightings for Íceland are grouped in the center of Iceland and the value for fitjueiginde 'nákvæmni XY' (nakvaemniXY) is '9000'. Sightings for Norðurland are grouped on Tröllaskagi, sightings for Norðvestur are placed in the center of the Vestfjords, sightings on Melrakki are grouped just off the north coast (nakvaemniXY = 3000 or 2000). If only the area is know, the data is placed in the center of the corresponding 10-km-reit (nakvaemniXY = 1000). If the location is known in detail, t.d. bæ, the entry for 'nakvaemniXY' is '100'. Sometimes the sources do not state the location of the sighting but the farm where the animal was processed [unnin]. And one has to keep in mind that a 'dot' in the data set can also represent an animal that has been in Iceland for a longer period of time and has traveled a longer distance. If there are several sightings for the same place or area, the entries are scatterd using a 1-km-reit system. Entries on age, sex, and size or weight are often missing. Fitjueigindi 'RM númer' (RMnumer) corresponds with the Natural History Collection of Náttúrufræðistofnun. Heimild [Source]: Náttúrurfræðistofnun Íslands and the publication: Rósa Rut Þórisdóttir 2018. Hvítabirnir á Íslandi. Reykjavík: Bókaútgáfan Hólar.

PURPOSE: These data have been updated following a Canadian Science Advice Secretariat (CSAS) Regional Science Advisory Process. Associated publications are available in the citation section below or will be posted on the Fisheries and Oceans Canada (DFO) Science Advisory Schedule as they become available. DESCRIPTION: Atlantic herring NAFO 4T biomass estimates for both spring and fall stock components. Values are provided in kilotons (kt) alongside with confidence intervals 50% (spring) and 95% (spring and fall). USE LIMITATION: To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.

The objective of the study was to describe the spatial distribution of krill in eastern Canadian waters using a statistical modelling approach in support of the identification of important habitat for the western North Atlantic (WNA) blue whale (Balaenoptera musculus). Generalized Additive Models (GAMs) were used to predict ‘Significant Aggregations of Krill’ (SAK), i.e., areas where dense krill aggregations would have a greater probability of occurring. SAK cover less than 2% of the entire spatial domain and their location varied among krill categories and seasons. These SAK are interpreted as areas where environmental conditions promote krill aggregation on a regular basis and therefore are potentially important for WNA blue whale foraging in eastern Canadian waters. Plourde, S., Lehoux, C., McQuinn, I.H., and Lesage, V. 2016. Describing krill distribution in the western North Atlantic using statistical habitat models. DFO Can. Sci. Advis. Sec. Res. Doc. 2016/111. v + 34 p.

The National Ecological Framework for Canada's "Surface Form by Ecoprovince" dataset contains tables that provide surface form information for components within the ecoprovince framework polygon. It provides surface form codes and their English and French-language descriptions as well as information about the percentage of the polygon that the component occupies. Surface form descriptions describe assemblages of slopes or recurring patterns of forms that occur at the earth's surface. When applied to consolidated materials (material that has been transformed to hard rock), it refers to the form produced after modification by geological processes. The mineral soil surface forms are: dissected; hummocky (irregular); inclined; level, rolling; ridged; steep; terraced; undulating. The wetland surface forms are: bog; fen; marsh; swamp.