Table 3.1. Summary of historical population estimates for 22 circumpolar caribou and wild reindeer herds. Data courtesy of Circum-Arctic Rangifer Monitoring Assessment Network (CARMA) and D.E. Russell & A. Gunn; www.carmanetwork.com/display/ public/home. Data vary substantially among herds and over time in accuracy and precision, and represent only general patterns of abundance. Conservation of Arctic Flora and Fauna, CAFF 2013 - Akureyri . Arctic Biodiversity Assessment. Status and Trends in Arctic biodiversity. - Mammals(Chapter 3) page 91

Albedo is a reflection coefficient that describes the reflecting power of a surface. Data compiled for CAFFs Land Cover Change Initiative with dataset for the firs of very month during 2001- 20112. - <a href="http://www.caff.is/indices-and-indicators/land-cover-change-index" target="_blank"> Land Cover Change Initiative (LCC)</a>

Colored Dissolved Organic Matter (CDOM) is a measurement of the absorption of light in the UV and visible spectrum by the colored components of dissolved organic carbon. It is essentially the yellow substance in water as a result of decaying detritus. It is important to measure because it limits the amount of sunlight penetration, and thus restricts the growth of plankton populations. It is measured in a unit-less CDOM index. Data generated as part of CAFFs Circumpolar Biodiversity Monitoring Program (CAFF) and its Land Cover Change Initiative (LCC) Trends visible in the MODIS dataset show an overall decrease in the mean CDOM from 2003 to 2012, with a percent change of -31.7%. This trend can be seen in Figure 40. This decrease corresponds to the increase in total yearly primary productivity (Figure 30), as a decrease in the CDOM allows for sunlight to penetrate deeper into the water, boosting chlorophyll concentrations and thus primary productivity.

The Arctic territory is roughly subdivided along two main axes in latitudinal subzones (Fig. 9.1) and longitudinal floristic provinces (Fig. 9.2). The latitudinal northsouth axis mainly reflects the present climate gradient divided into five different subzones, which are separated according to climate and vegetation in the lowlands of each zone. Published in the Arctic Biodiversity Assessment, Chapter 9 - released in 2013

Vegetation indices quantify the concentrations of green leaf vegetation (chlorophyll)around the globe, in an attempt to monitor and correlate vegetation health and stress. The MODIS vegetation products include the Normalized Difference Vegetation Index (NDVI)and an Enhanced Vegetation Index (EVI). Included in the MOD13C1 product is both NDVIand EVI, so both have been provided for the CAFF Dedicated Pan-Arctic Satellite RemoteSensing Products and Distribution System. These indices come in a variety of resolutions,but MTRI has provided a monthly global composite on a 0.05° Climate Model GRID(CMG).

Circumpolar map of all polar bear subpopulation as recognized by the IUCN/Polar Bear Specialist Group in 2009 (PBSG 2010a). Total area covered = 24 mill. km(2). Vongraven, D and Peacock, E. Development of a pan-Arctic monitoring plan for polar bears:background paper. Published in the Arctic Biodiversity trends 2010, Indicator #01 - released in May 2010 Updated in feb.2025 with spatial data from 2022

The MODIS Land Surface Temperature (LST) product provided is a monthlycomposite configured on a 0.05° Climate Model Grid (CMG). It includes both daytime andnighttime surface temperatures, taken at 11 um and 4 um (night). This product has beenscaled. To convert the raster values to a Kelvin temperature scale, multiply by a factor of 0.02.

<img src="http://geo.abds.is/geonetwork/srv/eng//resources.get?uuid=59d822e4-56ce-453c-b98d-40207a2e9eec&fname=cbmp_small.png" alt="logo" height="67px" align="left" hspace="10px"> The Arctic marine data set contains a total of 111 species and 310 population time series from 170 locations. Species coverage is about 34% of Arctic marine vertebrate species (100% of mammals, 53% of birds, and 27% of fishes) (Bluhm et al. 2011). At the species level, even though the representation of Arctic fish species is lower than that of mammals and birds, the data are dominated by fishes, primarily from the Pacific Ocean (especially the Bering Sea and Aleutian Islands). However, there are more population time series in total for bird species, which is reflective of this group being both better studied historically and also monitored at many small study sites compared to fish and marine mammal species, which are regularly monitored at a much larger scale through stock management. Note that the time span selected for marine analyses is 1970 to 2005 (compared with 1970 to 2007 for the ASTI for all species). CAFF Assessment Series No. 7 April 2012 - <a href=http://caff.is/asti/asti-publications/28-arctic-species-trend-index-tracking-trends-in-arctic-marine-populations" target="_blank"> The Arctic Species Trend Index - Tracking trends in Arctic marine populations </a>

Number of marine mammal species in Arctic marine regions classified by resident species (n = 11 total) or all species (including seasonal visitors, n = 35 total). CAFF 2013. Arctic Biodiversity Assessment. Status and Trends in Arctic biodiversity. Conservation of Arctic Flora and Fauna, Akureyri - Mammal (Chapter 3) page 84

Arctic Biodiversity Assessment (ABA) 2013. Figure 4.2. Major flyways of Arctic birds. Bird migration links Arctic breeding areas to all other parts of the globe (adapted from ACIA 2005). Conservation of Arctic Flora and Fauna, CAFF 2013 - Akureyri . Arctic Biodiversity Assessment. Status and Trends in Arctic biodiversity. - Birds(Chapter 4) page 146