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Table 2 Studies reporting above ground carbon stocks (AGC) across Africa, some also reporting other carbon pools

From: The effects of seaward distance on above and below ground carbon stocks in estuarine mangrove ecosystems

Location Authors Annual rainfall Seaward Distance reported? Stem density (stems ha−1) Basal area (m2 ha−1) No. species No. plots sampled Plot size/shape Minimum DBH AGB Equation used (H = height used in equation) Soil depth sampled No. of soil samples AGC (Mg C ha-1) BGC (Mg C ha-1) SOC (Mg C ha-1) SOC method Observations
Africa Fatoyimbo & Simard (2013) – N – – – – – – Mutlispecies (H) (Saenger and Snedaker, 1993) – – 54.52* – –   radar/lidar integration study
Cameroon Ajonina et al. 2014 3000–4000 mm N 3256 25.1 5 3 subplots × 5 PSP 20 × 10 m/1 × 1 m >1 cm/< 1 cm Genus specific (Ajonina et al. 2008) 1 m 60 237.35* 119.34* –   
Democratic Republic of the Congo Ajonina et al. 2014 772 mm N 1267 24.5 2 3 subplots × 3 PSP 20 × 10 m/1 × 1 m > 1 cm/< 1 cm Genus specific (Ajonina et al. 2008) 1 m 36 192.23* 72.15* –   
Gabon Ajonina et al. 2014 2500–3000 mm N 1467 24.5 8 3 subplots × 4 PSP 20 × 10 m/1 × 1 m > 1 cm/< 1 cm Genus specific (Ajonina et al. 2008) 1 m 48 160.27* 58.89* –   
Gabon North Kauffman & Bhomia, 2017 2883 mm N – – – 6 plots × 7 sites 7 m radius, 2 m radius > 5 cm, < 5 cm Genus specific (Fromard et al. 1998) ~1 m 42 36–380 – 345 dry combustion method (induction furnace)  
Gabon South Kauffman & Bhomia, 2017 1818 mm N < 1000 – – 6 plots × 10 sites 7 m radius, 2 m radius > 5 cm, < 5 cm Genus specific (Fromard et al. 1998) ~1 m 60 3–313 – 191 dry combustion method (induction furnace)  
Guinea-Bissau Carreiras, et al. 2012 – N – – 3 16 20 m, 14 m, 4 m radius concentric > 50 cm, > 20 cm, > 5 cm A. germinans, L. racemosa (Fromard et al.1998); R. mangle (Imbert and Rollet, 1989) – – 26.39* – –   Remote sensing study
Kenya Gress et al. 2017 – Y – – 3 77 10 × 10 m – – 2.5 m   – – 1224 Oven dried  
Kenya Cohen et al. 2013 – N – – 7 337 trees harvest data n/a Species specific and multispecies – – 35.04–96* – –   
Liberia Kauffman & Bhomia, 2017 3346 mm N – – – 6 plots × 10 sites 7 m radius, 2 m radius > 5 cm, < 5 cm Genus specific (Fromard et al. 1998) ~1 m 60 5–162 – 342 dry combustion method (induction furnace)  
Madagascar Jones et al. 2014 – N 1250-5600 – 8 56 10 × 10 m and 20 × 20 m 5 cm A. marina (Clough & Scott, 1989); B. gymnorrhiza (leaves), C. tagal, H. littoralis (leaves), R. mucronata (Comley & McGuinness, 2005); B. gymnorrhiza (stem, H), H. littoralis (stem, H), L. racemosa, S. alba (H), R. mucronata (stem, H), X. granatum (H) (Kauffman & Cole, 2010) 1.5 m 50 20.8–146.8 – 324-517   
Mozambique Fatoyinbo et al. 2017    2036 – 8 25 0.0154 ha, 2 m radius > 5 cm, < 5 cm Njana et al. (H) – – 95.41* – –   radar/lidar integration study
Mozambique Sitoe et al. 2014 – N – – 6 55, 31 trees felled 7 m radius > 5 cm Multispecies (Sitoe et al. 2014) 1 m 55 28.02 25.22 160 Walkley–Black wet oxidation method  
Mozanbique Stringer et al. 2015 1000–1400 mm N – – 9 6 subplots × 12 plots 7 m, 2 m radius > 5 cm, < 5 cm and h > 1.3 m Multispecies (Komiyama et al. 2005, 2008) 2 m 72 25.85–113.2* 8.80-26.94* 274.6-314.1 Oven dried weight  
Republic of Congo Ajonina et al. 2014 2500–3000 mm N 1667 18.8 2 3 subplots × 3 PSP 20 × 10 m/1 × 1 m > 1 × cm/< 1 cm Genus specific (Ajonina et al. 2008) 1 m 36 117.97* 47.58* –   
Senegal Kauffman & Bhomia, 2017 650 mm N 35,000 – – 6 plots × 6 sites 7 m radius, 2 m radius > 5 cm, < 5 cm Genus specific (Fromard et al. 1998) ~1 m 36 11–122 – 240 dry combustion method (induction furnace)  
Tanzania Njana et al. 2017 879–1240 mm N 3662–4947 10.8–13.3 9 88 15 m radius concentric plots > 1 and min height 2 m Mulitspecies and species scpecific for Avicennia marina, Sonneratia alba and Rhizophora mucronata (Njana et al. 2016) – – 33.5 30.5 –   
Tanzania Lupembe 2014 750–1250 mm N 729 18.3 8 59 plots, 50 trees felled 20 m × 40 m > 5 cm Multi species (Lupembe 201)6 60 cm 50 40.5 21.08 98.57 Walkley–Black wet oxidation method  
Tanzania This study 1200 mm Y 717 8.82 7 5 100 m × 100 m > 5 cm Multipspecies (Njana et al. 2016) 1 m 20 26.84 25.79 301.69 Walkley–Black wet oxidation method  
  1. AGC: above ground carbon; BGC: below ground carbon (e.g. roots), SOC: soil organic carbon
  2. *Signifies that values have been computed from above ground biomass values (AGB, Mg dry mass ha−1) to carbon (Mg C ha−1) using the carbon fraction of 0.47 (Kauffman and Donato [59])
  3. Studies on only SOC as reviewed in Twilley et al. [31] were not included in this review
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Carbon Balance and Management

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