Zooglider: An autonomous vehicle for optical and acoustic sensing of zooplankton.

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For the week of 07 January 2019

Greetings OpenChannels Community Members,

Limnology and Oceanography has published Zooglider: An autonomous vehicle for optical and acoustic sensing of zooplankton, "We present the design and preliminary results from ocean deployments of Zooglider, a new autonomous zooplankton‐sensing glider. Zooglider is a modified Spray glider that includes a low‐power camera (Zoocam) with telecentric lens and a custom dual frequency Zonar (200 and 1000 kHz). The Zoocam quantifies zooplankton and marine snow as they flow through a defined volume inside a sampling tunnel. Images are acquired on average every 5 cm from a maximum operating depth of ~ 400 m to the sea surface. Biofouling is mitigated using a dual approach: an ultraviolet light‐emitting diode and a mechanical wiper. The Zonar permits differentiation of large and small acoustic backscatterers in larger volumes than can be sampled optically. Other sensors include a pumped conductivity, temperature, and depth unit and chlorophyll a fluorometer. Zoogliderenables fully autonomous in situ measurements of mesozooplankton distributions, together with the three‐dimensional orientation of organisms and marine snow in relation to other biotic and physical properties of the ocean water column. It is well suited to resolve thin layers and microscale ocean patchiness. Battery capacity supports 50 d of operations. Zooglider includes two‐way communications via Iridium, permitting near‐real–time transmission of data from each dive profile, as well as interactive instrument control from remote locations for adaptive sampling."

As always, if we've missed anything, please feel free to let us know. You may simply reply to this message, or you may email Allie directly at: abrown [at] openchannels.org.

You can read everything (not just the free stuff) we have found this week at https://www.openchannels.org/literature-update/2019-01-09. Additionally, you can browse literature by the week we've added it at https://www.openchannels.org/literature-by-week.

Thank you for being part of the OpenChannels Community,
– Allie Brown, Raye Evrard, and the rest of the OpenChannels Team

Biodiversity

OA: Frelat, R. et al. A three-dimensional view on biodiversity changes: spatial, temporal, and functional perspectives on fish communities in the Baltic Sea. ICES Journal of Marine Science 75, 2463 - 2475 (2018).

Distributions of Species

OA: Jemison, L. A., Pendleton, G. W., Hastings, K. K., Maniscalco, J. M. & Fritz, L. W. Spatial distribution, movements, and geographic range of Steller sea lions (Eumetopias jubatus) in Alaska. PLOS ONE 13, e0208093 (2018).

Ecosystem-based Management (EBM)

OA: Fluharty, D. The Ecosystem Approach in Ocean Planning and Governance (Langlet, D. & Rayfuse, R. ) 371 - 412 (Brill | Nijhoff, 2018). doi:10.1163/9789004389984_013

Food for Thought

OA: Merrick, R. Mechanisms for science to shape US living marine resource conservation policy. ICES Journal of Marine Science 75, 2319 - 2324 (2017).

Governance and Legal Frameworks

OA: The Ecosystem Approach in Ocean Planning and Governance. (Brill | Nijhoff, 2018). doi:10.1163/9789004389984

Marine Protected Areas (MPAs)

Preprint: Bruno, J. F., Côté, I. M. & Toth, L. T. Climate Change, Coral Loss, and the Curious Case of the Parrotfish Paradigm: Why Don't Marine Protected Areas Improve Reef Resilience?. Annual Review of Marine Science 11, 307 - 334 (2019).

Natural Sciences

Preprint: Diop, N. et al. Foraging ecology of tropicbirds breeding in two contrasting marine environments in the tropical Atlantic. Marine Ecology Progress Series 607, 221 - 236 (2018).

Pollution and Marine Debris

OA: Monteiro, A., Russo, M., Gama, C. & Borrego, C. How important are maritime emissions for the air quality: At European and national scale. Environmental Pollution 242, 565 - 575 (2018).

Recreational Fisheries

OA: Harasti, D., Davis, T. R., Jordan, A., Erskine, L. & Moltschaniwskyj, N. Illegal recreational fishing causes a decline in a fishery targeted species (Snapper: Chrysophrys auratus) within a remote no-take marine protected area. PLOS ONE 14, e0209926 (2019).

Tools and Data

OA: Ohman, M. D. et al. Zooglider: An autonomous vehicle for optical and acoustic sensing of zooplankton. Limnology and Oceanography: Methods (2018). doi:10.1002/lom3.10301