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首页> 外文期刊>european journal of phycology >Marine cyanobacteria in tropical regions: diversity and ecology
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Marine cyanobacteria in tropical regions: diversity and ecology

机译：热带地区的海洋蓝藻：多样性和生态学

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摘要

Tropical marine ecosystems are characterized by a specific cyanobacterial flora, temperature most probably being the major factor limiting the geographic distribution of the species. When compared with the open ocean, the highest biodiversity of cyanobacteria is observed in the littoral zones where they form intertidal and infralittoral mats, live as endoliths in carbonate substrates or form symbiotic associations, especially with sponges and ascidians. Their diversity, which especially in the less accessible infralittoral is still largely unknown, is also a source of diverse bioactive compounds, some of which are important as herbivore deterrents. As photosynthetic organisms, cyanobacteriasensu lato(including Prochlorophyta) are important contributors to benthic and open ocean primary production, but their main role in the tropical marine ecosystems appears to be as nitrogen fixers. Of primary importance in the often oligotrophic tropical oceans is the nonheterocystous, planktonic bloom-formingTrichodesmium, which probably represents a major nitrogen source for the marine and global nitrogen cycle.
机译：热带海洋生态系统的特点是特定的蓝藻菌群，温度很可能是限制该物种地理分布的主要因素。与开阔的海洋相比，蓝藻的生物多样性最高，在沿海地区，它们形成潮间带和近岸垫，以内石形式生活在碳酸盐基质中或形成共生关系，特别是与海绵和海绵形成共生关系。它们的多样性，特别是在交通不便的近岸地区，在很大程度上仍然未知，也是多种生物活性化合物的来源，其中一些化合物作为食草动物的威慑力量很重要。蓝藻（包括原绿藻门）作为光合生物，是底栖和公海初级生产的重要贡献者，但它们在热带海洋生态系统中的主要作用似乎是固氮剂。在通常寡营养的热带海洋中，最重要的是非异囊、浮游生物水华形成的木霉，它可能代表了海洋和全球氮循环的主要氮源。

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