September 7, 2021 — Researchers returned to sea for the second ecosystem monitoring (EcoMon) cruise of 2021. Scientists and crew aboard the NOAA Ship Pisces sampled at 149 stations. They achieved near-complete coverage of the survey area, from north of Delaware Bay through the Gulf of Maine.
Fewer days were available for the cruise than originally planned. The scientific crew dropped all stations south of Delaware Bay at the beginning of the cruise to allow for full coverage in the north. Favorable weather and sea conditions during the entire survey allowed for supplemental stations to be added on the end of the cruise. Sample stations were added adjacent to Nantucket Shoals, near foraging North Atlantic right whales and in and around wind energy lease areas.
Zooplankton are tiny animals and very young stages of some animals that will grow larger. Samples of zooplankton provide information about the food chain supporting fisheries and marine mammals. Scientists use larval fish and egg samples to learn more about fish stock spawning and help estimate stock abundance. Measurements of physical and chemical conditions like temperature and salinity help us describe ecosystem productivity, spawning, larval recruitment, fish condition, and species distributions.
Together, the core measurements conducted by our EcoMon cruises help researchers understand and predict changes in the Northeast shelf ecosystem and its fisheries. Researchers are scheduled to sail on the next EcoMon survey in October aboard the Pisces.