Harmful algal blooms (HABs) have increased in abundance and severity around the world in recent decades. Among coastal HABs, benthic cyanobacteria blooms, particularly Lyngbya spp., are becoming more numerous and persistent in tropical and subtropical environments. These species have become increasingly problematic in the near-shore waters of Florida, and it has been suggested that this may be in part caused by nutrient enrichment resulting from highly developed coastal habitats.

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A National Park Service (NPS) Hawai'i Volcanoes National Park (HAVO) interpretive flyer designed for island residents (Kama'aina) visiting the newly acquired Kahuku area of the Park to educate them about the threat of invasive species.

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A National Park Service (NPS) Hawai'i Volcanoes National Park (HAVO) interpretive flyer designed for off-island visitors to the Park to educate them about the threat of invasive species.

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This brochure is part of a series of images, diagrams and fun facts produced by the Global Seagrass Trajectories working group, funded by the National Science Foundation and conducted at the National Center for Ecological Analysis and Synthesis in SantaBarbara, California. It describes the temperate and tropical distributions of seagrasses globally, their role as food and habitat for a variety of organisms, as well as being effective indicators of change.

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This brochure summarizes what are seagrasses, their role in the productivity of ecosystems, their importance to humans as well as a collection of fun facts.

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