農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

高雄市梓官及屏東縣枋山沿近海水深10~100公尺的底棲生物組成比較結果顯示屏東縣枋山沿近海的魚類佔總豐度98.6%及總生物量79.9%高於一般台灣沿近海底棲生物相的總豐度約佔80%及總生物量70%的比值。屏東縣枋山沿近海魚類的豐度排序為七星底燈魚(39.78%)、印度側帶小公魚(17.87%)、黃斑光胸鰏(13.63%)、粗紋馬鰏(13.50%)、布氏長鰭天竺鯛(3.49%)、島嶼側帶小公魚(2.09%)及仰口鰏(1.62%)等(圖5a)。魚類的生物量排序為短棘鰏(19.43%)、七星底燈魚(16.02%)、粗紋馬鰏(13.13%)、印度側帶小公魚(5.52%)、斑點雞籠鯧(4.6%)、黃斑光胸鰏(3.54%)及浪人鰺(3.29%)(圖5b)。七星底燈魚在數量及生物量上均佔優勢，為枋山沿近海生態系的重要物種之一。屏東縣枋山沿近海魚類的碳、氮穩定同位素比值顯示七星底燈魚為食物鏈中最底層的魚類，可能為生態系內的重要關鍵物種之一。

Comparison of the species composition of benthos in the 10 and 100 m depths of coastal waters between Fanshan, Pintung County and Zihguan, Kaohsiung City revealed that Fish occupies the 98.6 % and 79.9 % of abundance and biomass respectively in the landings of artisanal bottom trawler at Fanshan, Pintung County which are higher than the fish abundance and biomass of benthos community in the other coastal waters around Taiwan. High abundance and biomass of Benthosema pterotum in the coastal water at Fanshan, Pintung County revealed that this species is one of the keystone species in the coastal ecosystem. The low stable isotope ratios of carbon and nitrogen revealed that this species has lower food chain status in food web to be consumed by many predatory species.