滩涂高程对藤壶附着秋茄幼林影响的初步研究

Preliminary Study on the Influence of Elevation on Attachment of Barnacles to the Planted Kandelia candel Seedlings

于2005年4月至7月研究了厦门海沧吴冠滩涂人工红树林种植区秋茄(Kandelia candel)幼林上藤壶分布的特征.结果表明:(1)秋茄幼林植株上附生有藤壶4种,分别是:纹藤壶(Balanus amphitrite amphitrite)、白脊藤壶(Balanusalbicostatus)、白条地藤壶(Chthamalus withersi)和网纹藤壶(Balanus reticulates).其中纹藤壶、白条地藤壶为优势种.(2)当高程大于-11.74 cm时,藤壶的空间分布格局总体上为聚集分布.藤壶平均附着数量、覆盖度、聚块性指数与滩涂高程呈负相关性,回归方程分别为y=-2.120 4H+187.13,y=-1.145 5H+82.433,PAI=0.005H+1.058 7.(3)不同种类的藤壶分布于不同茎干高度.其平均数量均与所处高程呈负相关性,其分布型随高程变化而变化.纹藤壶、白脊藤壶、白条地藤壶与高程关系的回归方程分别为y=-0.036 4H+2.784 9,y=-0.385 8H+29.064,y=-0.107 1H+14.873.而它们的PAI与高程关系的回归方程分别为PAI=-0.009 5H+1.295 8,PAI=0.019H+0.828 5,PAI=0.017 4H+1.004 5.

The investigation on the barnacles attaching to the stems of Kandelia candel seedlings in the mangrove stand in Wuguan, Haicang, Xiamen was carried out in April and July of 2005. There are 4 species：Balanus amphitrite amphitrite,Balanus albicostatus,Chthamalus withersi and Balanus reticulates. Balanus amphitrite amphitrite and Chthamalus withersi were the major spe- cies. When the elevation exceeds -11.74 cm, special distribution structures of the barnacles were collective as a whole. The elevation shows the negative correlation with the average numbers,coverage of barnacles and PAI. Regression equations are y=-2. 120 4H＋ 187.13,y=-1. 145 5H＋82. 433,PAI=0. 005H＋1. 058 7. Different kinds of barnacles attach to the different positions of stems. The distribution structures varied according to the elevation of different stands where the mangrove grew. As the average numbers of Balanus amphitrite amphitrite ,Balanus albicostatus, Chthamalus withersi with the elevation relations, regression equations are y=-0. 036 4H＋2. 784 9,y=-0. 385 8H＋29. 064,y=-0. 107 1H＋14. 873. As their PAI,regression equations are PAI=-0. 009 5H＋1. 295 8,PAI=0. 019H＋0. 828 5,PAI=0. 017 4H＋1. 004 5.