Table 1 List of environmental variables used in this study (from Basher et al. 2014) which were cropped to an extension of 70°N–70°S
From: Modelling present and future global distributions of razor clams (Bivalvia: Solenidae)
Layer | Unit | Type | Temporal range | Minimum | Maximum | Mean | Std. Dev. |
|---|---|---|---|---|---|---|---|
Land distance | km × 100 | – | – | 0.00 | 24.92 | 6.80 | 5.22 |
Sea surface temperature (annual mean) | °C | Monthly climatology | 2002–2009 | −1.00 | 31.54 | 15.89 | 10.44 |
Sea surface temperature (range) | °C | Monthly climatology | 2002–2009 | 0.00 | 27.81 | 4.26 | 3.08 |
Depth | m | – | – | −10,293.65 | 0 | −3671.68 | 1602.58 |
Wave height | m | – | – | 0.00 | 7.00 | 0.29 | 1.02 |
Photosynthetically active radiation (annual mean) | Einstein m−2 day−1 | Monthly climatology | 1997–2009 | 0.00 | 64.82 | 35.22 | 8.55 |
Chlorophyll-a concentration (annual mean) | mg m−3 | Monthly climatology | 2002–2009 | 0.02 | 0.90 | 0.05 | 0.04 |
Diffuse attenuation coefficient* (at 490 nm) | m−1 | Monthly climatology | 2002–2009 | 0.02 | 0.90 | 0.05 | 0.04 |
Primary Productivity | mg C m−2 day−1 cell−1 | Annual climatology | – | 0.00 | 4875.00 | 385.08 | 285.55 |
Tide average (average of maximum tidal height) | m | Annual climatology | – | 0.00 | 6.38 | 0.51 | 0.44 |
Surface current | m s−1 | Monthly climatology | 2009–2010 | −0.93 | 1.00 | 0.00 | 0.08 |
Salinity | PSS | In situ measure: 2009 | 1961–2009 | 0.00 | 41.00 | 33.96 | 2.09 |
pH | – | In situ measure: 2009 | 1910–2007 | 6.73 | 8.62 | 8.19 | 0.06 |
Dissolved oxygen | ml l−1 | In situ measure: 2009 | 1898–2009 | 2.00 | 9.86 | 5.29 | 1.27 |
Saturated oxygen | ml l−1 | In situ measure: 2009 | 1874–2000 | 76.05 | 113.11 | 100.10 | 3.23 |
Calcite concentration | mol m−3 | Seasonal climatology | 2002–2009 | 0.00 | 9.00 | 2.87 | 3.18 |
Silicate | μmol l−1 | In situ measure: 2009 | 1930–1986 | 0.00 | 69.00 | 9.85 | 13.86 |
Nitrate | μmol l−1 | In situ measure: 2009 | 1922–1986 | 0.00 | 45.96 | 5.52 | 6.13 |
Phosphate | μmol l−1 | In situ measure: 2009 | 1874–2000 | 0.00 | 2.00 | 0.26 | 0.44 |
Sea surface temperature at 2100 | °C | Monthly climatology | 2087 – 2096 | 0.00 | 35.05 | 18.04 | 10.91 |
Salinity at 2100 | PSS | Monthly climatology | 2087–2096 | 0.00 | 40.05 | 34.37 | 1.99 |
Primary productivity at 2100 | mg C m−2 day−1 cell−1 | Annual climatology | 2090–2099 | 0.00 | 5004.00 | 354.76 | 277.07 |