Table 1 State variables with their values (ranges), units, and references of origin or validation, respectively, for the entities of the PEKRIS model
Entity | State variable | Label | Value (range) | Unit | References |
|---|---|---|---|---|---|
Krill | Structural body weight (cubed physical body length) | W_V | 0.01–197.98 | mg DW | Ikeda and Mitchell (1982) |
|  | Mass of reproduction buffer | W_R | 0.00–118.33 | mg | Nicol et al. (1995) |
|  | Structural body length | structural_length | 0.34–9.65 | mm | Quetin and Ross (1991); Hofmann and Lascara (2000); Reiss et al. (2008); Siegel (2017) |
|  | Assimilation | J_A | 0.00–3.71 | mg d-1 | Jager and Ravagnan (2015) |
|  | Somatic maintenance | J_M | 0.00–2.80 | mg d-1 | Jager and Ravagnan 2015) |
|  | Structural growth | J_V | 0.00–0.41 | mg d-1 | |
|  | Investment reproduction buffer | J_R | 0.00–0.74 | mg d-1 | Jager and Ravagnan (2015) |
|  | Number of spawning events | number_of_spawnings | 0–3 | n | Siegel (2016) |
|  | Age | age | 0–2190 | d | |
|  | Age of first reproduction | age_of_first_reproduction | 471–1372 | d | Siegel (2017) |
|  | Number of eggs released | number_of_eggs | 0–4020 | n | Bahlburg et al. (2021) |
|  | Days of starvation | days_of_starvation | 0–186 | d | Quetin and Ross (1991) |
Clutch | Structural body weight (cubed physical body length) | W_V | 0.01–5.22 | mg DW | – |
|  | Mass of reproduction buffer | W_R | 0.00–1.19 | mg | |
|  | Structural body length | structural_length | 0.34–2.87 | mm | – |
|  | Assimilation | J_A | 0.00–0.30 | mg d-1 | Jager and Ravagnan (2015) |
|  | Somatic maintenance | J_M | 0.00–0.07 | mg d-1 | Jager and Ravagnan (2015) |
|  | Structural growth | J_V | 0.00–0.14 | mg d-1 | Jager and Ravagnan (2015) |
|  | Age | age | 0–117 | d | – |
|  | Days without food | days_of_starvation | 0–23 | d | Ross and Quetin (1991) |
|  | Number of eggs in the clutch | number | 10–4020 | n | Bahlburg et al. (2021) |
Oozoid | Body length | body_length | 0.40–10.50 | cm | Harbou (2009); Pakhomov and Hunt (2017); Pakhomov et al. (2018) |
|  | Age | age | 0–450 | d | Loeb and Santora (2012) |
|  | Number of chain releases | number_of_chain_releases | 0–3 | n | |
|  | Days with food uptake below the maintenance cost | days_of_starvation | 0–30 | d | Groeneveld et al. (2020) |
|  | Generation number | number_of_generation_season | 0–4 | n | Groeneveld et al. (2020) |
|  | Time from first to last chain release | regeneration_time | 0–185 | d | Groeneveld et al. (2020) |
|  | Carbon weight | carbon_weight | 0.03–94.81 | mg | |
|  | Carbon storage for reproduction | carbon_reproduction | 1.01–7.38 | mg | Groeneveld et al. (2020) |
Blastozooid | Body length | body_length | 2.50–6.85 | cm | Harbou (2009) |
|  | Age | age | 0–150 | d | Loeb and Santora (2012) |
|  | Days without food | days_of_starvation | 0–30 | d | Groeneveld et al. (2020) |
|  | Generation number | number_of_generation_season | 0–3 | n | Groeneveld et al. (2020) |
|  | Carbon weight | carbon_weight | 2.62–32.60 | mg | Groeneveld et al. (2020) |
|  | Carbon storage for reproduction | carbon_reproduction | 0.00–7.28 | mg | Groeneveld et al. (2020) |
Chain | Number of individuals | number | 1–213 | n | Harbou (2009) |
|  | Body length | body_length | 0.50–2.50 | cm | |
|  | Age | age | 0–150 | d | Loeb and Santora (2012) |
|  | Days with a lack of food | days_of_starvation | 0–30 | d | Groeneveld et al. (2020) |
|  | Generation number | number_of_generation_season | 0–5 | n | Groeneveld et al. (2020) |
|  | Carbon weight | carbon_weight | 0.05–2.62 | mg | |
|  | Carbon storage for reproduction | carbon_reproduction | 0.00–0.46 | mg | Groeneveld et al. (2020) |
Patch | Food (chlorophyll-a) concentration | chla | 0.08–27.02 | mg m-3 | Groeneveld et al. (2020) |