Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
| one publication added to basket [337804] |
Megafauna community assessment of polymetallic-nodule fields with cameras: platform and methodology comparison
Schoening, T.; Purser, A.; Langenkämper, D.; Suck, I.; Taylor, J.; Cuvelier, D.; Lins, L.; Simon-Lledó, E.; Marcon, Y.; Jones, D.O.B.; Nattkemper, T.W.; Köser, K.; Zurowietz, M.; Greinert, J.; Gomes-Pereira, J. (2020). Megafauna community assessment of polymetallic-nodule fields with cameras: platform and methodology comparison. Biogeosciences 17(12): 3115-3133. https://hdl.handle.net/10.5194/bg-17-3115-2020
In: Gattuso, J.P.; Kesselmeier, J. (Ed.) Biogeosciences. Copernicus Publications: Göttingen. ISSN 1726-4170; e-ISSN 1726-4189
|   |
| Auteurs | | Top |
- Schoening, T.
- Purser, A.
- Langenkämper, D.
- Suck, I.
- Taylor, J.
|
- Cuvelier, D.
- Lins, L.
- Simon-Lledó, E.
- Marcon, Y.
- Jones, D.O.B.
|
- Nattkemper, T.W.
- Köser, K.
- Zurowietz, M.
- Greinert, J.
- Gomes-Pereira, J.
|
| Abstract |
With the mining of polymetallic nodules from the deep-sea seafloor once more evoking commercial interest, decisions must be taken on how to most efficiently regulate and monitor physical and community disturbance in these remote ecosystems. Image-based approaches allow nondestructive assessment of the abundance of larger fauna to be derived from survey data, with repeat surveys of areas possible to allow time series data collection. At the time of writing, key underwater imaging platforms commonly used to map seafloor fauna abundances are autonomous underwater vehicles (AUVs), remotely operated vehicles (ROVs) and towed camera "ocean floor observation systems" (OFOSs). These systems are highly customisable, with cameras, illumination sources and deployment protocols changing rapidly, even during a survey cruise. In this study, eight image datasets were collected from a discrete area of polymetallic-nodulerich seafloor by an AUV and several OFOSs deployed at various altitudes above the seafloor. A fauna identification catalogue was used by five annotators to estimate the abundances of 20 fauna categories from the different datasets. Results show that, for many categories of megafauna, differences in image resolution greatly influenced the estimations of fauna abundance determined by the annotators. This is an important finding for the development of future monitoring legislation for these areas. When and if commercial exploitation of these marine resources commences, robust and verifiable standards which incorporate developing technological advances in camera-based monitoring surveys should be key to developing appropriate management regulations for these regions. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
