Bioturbation effect of mud lobster on the nutrient dynmicis in mangrove ecosystem

泥龙虾对红树林生态系统营养动态的生物扰动效应

• 批准号: 10660063
• 负责人: KAWAGUCHI Sadao
• 金额: $ 2.18万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10660063/
• 关键词: mud lobster; mangrove ecosystem; bioturbation; S cycle; pyrite; acid sulfate soil; turnover; plant nutrient dynmicis; 硫黄酸化細菌; 黄鉄鉱; 土壌環境; 営巣; N 循環; S 循環; ミミモチシダ

Results of field investigations and physico-chemical analyses of the soil mounds built by mud lobster, Thalassina anomala Herbst. Were as follows :1) The domed mound of the mud lobster is 98 cm high on the average, has a basal diameter of 108 cm and weighs 1412kg. There wee 380 mounds/ha in the Rhizophora apiculata dominant forest. The total soil weight of Thalassina anomala mounds was approximately 40 ton/ha, corresponding to a surface layer of soil approximately 6 cm thick, if the mounds were leveled off.2) The mud lobsters carry on the top of mound, subsoil rich in neutral pyrite FeSィイD22ィエD2, that becomes strongly acidic with aeration and shows decreasing trends in total C, N, P and basal contents and as well as electric conductivity in mound soil.3) Weekly measurements using a 10kg spring scale of the amount carried to the surface from the subsoil was estimated to be approximately 20.3 ton dry soil/ha/yr ; the mound soil turnover ratio was estimated to be 0.045 annually, indicating that appreciable amounts of available nutrients would be released from mud lobster activity to the surrounding mangrove ecosystem.

本文报道了对异常海蛛（ThalassinaanomalaHerbst）所建土丘的野外调查和理化分析结果。结果表明：1）泥虾圆丘平均高98 cm，基径108 cm，重1412 kg。竹荪优势林的土丘数为380个/hm 2。如果土丘被平整，Thalassina anomala土丘的总土壤重量约为40吨/公顷，对应于约6厘米厚的土壤表层。2）泥龙虾携带土丘顶部，富含中性黄铁矿FeS D22 D2的底土，随着通气而变成强酸性，并显示出总C，N，（3）用10公斤春季尺度每周测量一次，从底土带到地表的量估计约为20.3吨干土/公顷/年;丘体土壤周转率估计为每年0.045，表明泥虾活动会将可观数量的可用养分释放到周围的红树林生态系统。

项目成果

S. Kawaguchi, W. Meepol and S. Baba: "Nutrient Dynamics of Mud-Lobster Mounds in Rhizophora apiculata Dominated Mangrove Forest"The Comprehensive assessments on Impacts of Sea-Level Rise.. 92-102 (1999)

S. Kawaguchi、W. Meepol 和 S. Baba：“Rhizophora apiculata 主导的红树林中泥龙虾丘的营养动态”海平面上升影响的综合评估.. 92-102 (1999)

S. Kawaguchi, W. Meepol and S. Baba: "Nutrient Dynamics of Mud-Lobster Mounds in Rhizophora apiculata Dominated Mangrove Forest"The Comprehensive assessments on Impacts of Sea-Level Rise. 92-102 (1999)

S. Kawaguchi、W. Meepol 和 S. Baba：“Rhizophora apiculata 主导的红树林中泥龙虾丘的营养动态”海平面上升影响的综合评估。

S.Kawaguchi,W.Meepol and S.Baba: "Nutrient Dynamics of Mud-Lobster Mounds in Rhizophora apiculate Dominated Mangrove Forest"The Comprehensive Assessments on Impacts of Sea-Level Rise. 92-102 (1999)

S.Kawaguchi，W.Meepol和S.Baba：“红树林中泥龙虾丘的营养动态”海平面上升影响的综合评估。