Temporal and Spatial Variation of Benthic Marine Algae in Northeastern Taiwan

臺灣東北角底棲陸海藻時空變遷之研究

黃淑芳(Su-fang Huang)

《國立臺灣博物館半年刊》 55卷2期 (2002/12) Pp. 9-19

https://doi.org/10.6532/JNTMA.200212_55(2).0002

摘要

The seasonal succession and spatial variation of the marine algal biomass in the northeastern Taiwan were studied. Six sampling stations were set up along the coastal line from Nan-Ya to Tou-Cheng. The sampling was made using two 200 m lines perpendicular to the coast; the samples were taken every 3 months. The total biomass had a monodal cycle with the maximum in spring and the minimum in winter. The distribution of biomass showed differences between locations; Ma-Kang had exceptionally high biomass whereas at Nan-ya the recorded biomass was very low. It was found that 20 species of algae appeared dominantly in all six stations and served as the representative of the major algal community in the northeastern Taiwan. In the annual cycle, 8 species were represented 56% of the total seasonal biomass. They are: Ulva laetuca (8%), Sargassum cristaefolium (12%), Gelidium amansii (6%), Pterocladiella capillaeea (7%), Corallina pilulifera (6%), Marginisporum aberrans (5%), Hypnea japonica (7%) and Eueheuma serra (5%). On the vertical distribution, Bangia atropurpurea and Porphyra spp. were the dominant species on the supralittoral fringe in winter. In spring, Enteromorpha compressa and Ulva laetuca were the dominated species on the upper littoral zone; Colpomenia sinuosa, Padina spp., Chondracanthus intermedius and Chondrus verrucosa were the dominated species on the middle and lower littoral zone; Gelidium amansii, Pterocladiella eapillacea, Corallina pilulifera and Marginisporum aberrans were frequently seen on the infralittoral fringe; Sargassum cristaefolium, umaria diesingiana , Hypnea japonica and Eucheuma serra were the dominated species on the sublittoral zone. The increase of abundance and species of tropical algae in this area were also discussed.

關鍵字

Taiwan ； Northeastern Taiwan ； Marine algae ； Biomass ； Succession

並列摘要

本文旨在調查研究臺灣東北部海域底棲性海藻的生物量，並進行季節消長及時空變遷之探討。由南雅至頭城問設置六個採樣站，每個採樣區由海岸垂直拉長200公尺為範圍，每三個月調查一次。發現海藻的總生物量有循環性變化，即在春天時生物量最高，秋天時最低。隨不同地點，海藻的生物量亦不同，馬崗的海藻生物量最高，在南雅的海藻生物量則最低。在六個採集站均出現並形成優勢的種類有20種，是此區代表性藻類。在年度循環變化中，有8種海藻的生物量佔總生物量的56%，其包括石蓴（8%）、厚葉馬尾藻（12%）、石花菜（6%）、翼枝菜（7%）、小珊瑚藻（6%）、異邊孢藻（5%）、日本沙菜（7%）及鋸齒麒麟菜（5）。在垂直分怖上，冬天飛沫帶以頭髮菜及紫菜為優勢種，春天時潮間帶上部以石蓴及石髮為優勢種，潮間帶中下部以囊藻、團扇藻、小杉藻及異色角叉菜為主，低潮線以石花菜、翼枝菜、小珊瑚藻及異邊孢藻的數量最多，亞潮帶則以馬尾藻、圈扇藻、日本沙菜及鋸齒麒麟菜為代表。本文並探討此地區熱帶性海藻的種類及數量有增加趨勢。

並列關鍵字

臺灣 ； 東北角 ； 海藻 ； 生物量 ； 消長