Feature Channels: Marine Science

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Changes in the northern Alaskan Arctic ocean environment have reached a point at which a previously rare phenomenon—widespread blooms of toxic algae—could become more commonplace, potentially threatening a wide range of marine wildlife and the people who rely on local marine resources for food. That is the conclusion of a new study about harmful algal blooms (HABs) of the toxic algae Alexandrium catenella being published in the journal Proceedings of the National Academy of Science.

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In a new study, researchers across the University of California system in the United States and researchers in Mexico examine a red mangrove forest that is thriving in fresh water in the Yucatan Peninsula—more than 124 miles from the nearest ocean.

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Researchers at the University of Rhode Island and Penn State University have been awarded a four-year, $1.5 million grant through the National Oceanic and Atmospheric Administration to study the effects of sea level rise and how it may exacerbate the impact of extreme weather.

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Florida State University researchers have found that some marine-protected areas may not work as predicted in safeguarding and conserving endangered species. A team of international researchers found that hawksbill turtles in Brazil are most often searching for food and breeding outside the boundaries of marine-protected areas, which are designated regions of seas, oceans, the Great Lakes and estuaries set aside for conservation purposes.

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An emergency response mission to save corals in Dry Tortugas National Park was recently conducted and the results exceeded researchers’ expectations

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Research by scientists at Stony Brook University’s School of Marine and Atmospheric Sciences (SoMAS) reveals that climate velocity is affecting where large marine mammals are distributed relative to their prey species, which could have important implications for marine food web dynamics.

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The Nippon Foundation-GEBCO Seabed 2030 Project and Woods Hole Oceanographic Institution (WHOI) have signed a Memorandum of Understanding in recognition of both organisations’ work to advance our understanding of ocean bathymetry. This will complement the goals of the United Nations Decade of Ocean Science for Sustainable Development.

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A new study finds that that some large whale species (humpback, fin and minke whales) use the waters off New York and New Jersey as a supplemental feeding area feasting on two different types of prey species.

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The hauling of rope on maritime vessels could result in billions of microplastic fragments entering the ocean every year, according to new research.

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For the first time, researchers have developed a communication model to provide a variety of Florida’s agencies with a statewide strategic infrastructure. The model also includes recommendations on how to streamline the process of providing red tide information to users in varying formats.

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Researchers are the first to compare the genetic structure and genomic diversity of paired shallow and upper mesophotic coral sites in the Northern and Southern Dry Tortugas and the Lower and Upper Florida Keys. Results suggest that while vertical connectivity between paired shallow and mesophotic populations can vary, certain mesophotic coral populations are important for maintaining the long-term survival of this ecologically important coral species throughout the Florida Keys and should be considered in future management strategies.

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The capacity of coral reefs to provide ecosystem services relied on by millions of people worldwide has declined by half since the 1950s, according to a new University of British Columbia-led study.

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Shark depredation, where a shark partially or completely consumes a fish before a fisherman can get it out of the water, causes a range of negative biological and economic impacts. Scientists have found a novel way to address this issue using a citizen-science approach that includes surveys, videos, forensics and social media.

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New research at the University of Alaska Fairbanks shows that the fluctuations of major wind and ocean circulation systems can temporarily accelerate or reverse the rate of ocean acidification in the Gulf of Alaska.

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Beginning Tuesday, September 21 and running evenings (8–11pm EST) through Friday, September 24, artist collective SUPERFLEX will project Vertical Migration onto the facade of the United Nations Secretariat Building, the UN’s signature 39-story tower. Coinciding with the 76th UN General Assembly, Vertical Migration is a dramatic, 505-foot (154-meter) video installation that draws attention to the role that the ocean—particularly the little explored region known as the ocean twilight zone—plays in global climate.

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The green crab, Carcinus maenas, is considered a globally distributed invasive species, an organism introduced by humans that eventually becomes overpopulated, with increased potential to negatively alter its new environment. Traditionally, it’s been assumed that successful populations contain high genetic diversity, or a variety of characteristics allowing them to adapt and thrive. On the contrary, the green crab - like many successful invasive populations - has low genetic diversity, while still spreading rapidly in a new part of the world.

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A first in situ, long-term study explored how the common octopus, a medium-sized octopus widely distributed in tropical and temperate seas worldwide and the Atlantic longarm octopus, a small species of octopus found in the Atlantic Ocean and elsewhere, coexist by examining their foraging habits and tactics, diet, behaviors and when they are active or inactive. Results show that their very different behaviors and habits is exactly how these two species coexist in a shallow Florida lagoon- even at high densities.

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In times of exacerbating biodiversity loss, reliable data on species occurrence are essential, in order for prompt and adequate conservation actions to be initiated.