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Table 3 Average abundance and biomass with standard deviation of the most common gastropod species in upper intertidal zone

From: Long-term monitoring of Gastropoda (Mollusca) fauna in planted mangroves in central Vietnam

  Number of samples and the year of collection
3 5 3 7 8 8 7 8 7
2005 2006 2008 2009 2010 2011 2012 2013 DBn
Clithon oualaniense \( \frac{69.7\pm 120.7}{14.3\pm 24.8} \) \( \frac{346.7\pm 530}{30.6\pm 48.8} \) \( \frac{39.4\pm 53.3}{2.5\pm 4.3} \) \( \frac{74.3\pm 146}{4.1\pm 6.92} \) \( \frac{17.0\pm 32.3}{1.8\pm 3.34} \) \( \frac{46.6\pm 73.4}{46.6\pm 73.4} \) \( \frac{13.6\pm 21.2}{0.5\pm 0.8} \) \( \frac{226.1\pm 242.5}{14.5\pm 14.3} \)  
Clithon faba \( \frac{18.2\pm 31.5}{12.0\pm 20.7} \)       \( \frac{1.1\pm 3.2}{0.4\pm 1.12} \) \( \frac{28.4\pm 38.1}{2.5\pm 3.5} \)  
Cerithideopsilla cingulata    \( \frac{60.6\pm 105}{16.4\pm 28.3} \) \( \frac{52.9\pm 139.8}{4.3\pm 11.3} \) \( \frac{183\pm 289.1}{16.3\pm 13.3} \) \( \frac{223.9\pm 229.7}{62.5\pm 50.9} \) \( \frac{190.9\pm 150.9}{68.5\pm 47.3} \) \( \frac{206.8\pm 262}{47.9\pm 58} \)  
Batillaria zonalis    \( \frac{90.9\pm 142}{45.5\pm 66} \) \( \frac{55.71\pm 147.4}{2.7\pm 7.3} \) \( \frac{239.8\pm 255.3}{30.1\pm 21.2} \) \( \frac{655.7\pm 347.3}{148.7\pm 83.8} \) \( \frac{443.2\pm 525.6}{109.5\pm 111.1} \) \( \frac{944.3\pm 650.6}{102.1\pm 30.9} \) \( \frac{136.4\pm 241.3}{84.7\pm 184.4} \)
Cerithium coralium     \( \frac{127.1\pm 183}{22.8\pm 39.9} \) \( \frac{1.1\pm 3.2}{0.5\pm 1.5} \)   \( \frac{7.9\pm 19.1}{2.6\pm 4.3} \) \( \frac{5.7\pm 12.8}{0.5\pm 1.15} \) \( \frac{19.5\pm 51.5}{13.9\pm 43.5} \)
Clypeomorus bifasciata    \( \frac{3.0\pm 5.2}{1.2\pm 2.1} \) \( \frac{95.71\pm 244.5}{21.4\pm 54.2} \) \( \frac{6.8\pm 9.7}{1.0\pm 1.1} \) \( \frac{23.9\pm 29.9}{5.1\pm 7.4} \) \( \frac{4.5\pm 6.9}{1.3\pm 2.3} \) \( \frac{14.8\pm 16.7}{1.6\pm 1.9} \) \( \frac{28.6\pm 37.3}{9.0\pm 16.7} \)
Total for common species \( \frac{87.9\pm 152.2}{26.3\pm 45.5} \) \( \frac{364.7\pm 530}{30.6\pm 48.8} \) \( \frac{193.9\pm 153.3}{65.5\pm 58.8} \) \( \frac{405.7\pm 579}{55.4\pm 94.8} \) \( \frac{447.7\pm 524.8}{49.7\pm 35} \) \( \frac{950\pm 411.5}{218.9\pm 115.7} \) \( \frac{660.2\pm 595.3}{169.3\pm 136.2} \) \( \frac{1426.1\pm 908.9}{169.2\pm 61.5} \) \( \frac{184.4\pm 224.2}{120.7\pm 154.5} \)
Total for all species \( \frac{87.9\pm 152.2}{26.3\pm 45.5} \) \( \frac{364.7\pm 527.2}{34\pm 47} \) \( \frac{193.9\pm 153.3}{65.5\pm 58.8} \) \( \frac{408.6\pm 583.7}{55.4\pm 94.8} \) \( \frac{452.3\pm 495.7}{52.9\pm 39.1} \) \( \frac{955.7\pm 421.5}{222.4\pm 123.5} \) \( \frac{660.2\pm 595.3}{169.3\pm 136.2} \) \( \frac{1429.5\pm 908.7}{170\pm 57.5} \) \( \frac{192.2\pm 224.1}{121.6\pm 154.5} \)
  1. Average abundance (m−2, above line) and biomass (g/m2, below line) with standard deviation of the most common gastropod species (found in half or more sampling seasons) in quantitative samples and total abundance and biomass of gastropods in upper intertidal zone in each year of monitoring in mangrove plantations in Dam Bay and natural mangrove association in Dam Bay (DBn).