Background The seaweed flora of Pico Island (central group of the Azores archipelago) has attracted interest of researchers on past occasions. Despite this, the macroalgal flora of the island cannot be considered well-known as published information reflects only occasional collections. To overcome this, a thorough investigation encompassing collections and presence data recording was undertaken. Research under the Campaigns “AÇORES/89”, “PICO/91”, “PICOBEL/2007” and “LAUMACAT/2011” covered a relatively large area (approximately 39 km2) around the island, encompassing the littoral and sublittoral levels down to about 40 m around the Island. This paper improves the knowledge of the Azorean macroalgal flora at local and regional scales by listing taxonomic records and providing information on the ecology and occurrence of each species present on the Island’s littoral. New information A total of 4043 specimens (including taxa identified only to genus level) belonging to 303 taxa of macroalgae are registered, comprising 197 Rhodophyta, 53 Chlorophyta and 53 Ochrophyta (Phaeophyceae). From these, 225 were identified to species level (142 Rhodophyta, 41 Chlorophyta and 42 Ochrophyta), encompassing 110 new records for the island (69 Rhodophyta, 20 Chlorophyta and 21 Ochrophyta), three Macaronesian endemisms (Botryocladia macaronesica Afonso-Carillo, Sobrino, Tittley & Neto; Laurencia viridis Gil-Rodríguez & Haroun; Codium elisabethiae O. C. Schmidt), 14 introduced and 25 species with an uncertain status.

中文翻译：

---

亚速尔群岛皮库岛的海洋藻类植物群


背景 皮库岛（亚速尔群岛的中心群）的海藻植物群过去曾引起研究人员的兴趣。尽管如此，该岛的大型藻类植物区系并不能被认为是众所周知的，因为发布的信息仅反映了偶尔的收集。为了克服这个问题，我们进行了包括收集和存在数据记录在内的彻底调查。 “AÇORES/89”、“PICO/91”、“PICOBEL/2007”和“LAUMACAT/2011”活动下的研究覆盖了该岛周围相对较大的区域（约 39 平方公里），涵盖了沿岸和亚沿岸水平面环岛40m。本文通过列出分类记录并提供有关该岛沿岸每个物种的生态和发生情况的信息，提高了对当地和区域规模的亚速尔大型藻类植物区系的了解。新信息 共登记了 4043 个标本（包括仅在属级鉴定的类群），属于 303 个大型藻类分类群，其中包括 197 个红藻门、53 个绿藻门和 53 个褐藻门（褐藻门）。其中，鉴定出 225 种物种级别（142 种红藻门、41 种绿藻门和 42 种黄藻门），其中包括 110 种该岛新记录（69 种红藻门、20 种绿藻门和 21 种黄藻门）、三种马卡罗尼西亚特有种（Botryocladia macaronesica Afonso-Carillo、Sobrino、 Tittley & Neto；Laurencia viridis Gil-Rodríguez & Haroun；Codium elisabethiae OC Schmidt)，14 个引进物种，25 个状态不确定。