Consulta: creatorFacets:"Metaxas, Anna"
Registros recuperados: 5
Data/hora: 05/06/2024 19:14:34

Influence of an oxygen minimum zone and macroalgal enrichment on benthic megafaunal community composition in a NE Pacific submarine canyon
Provedor de dados: 5
Autores: Domke, Lia; Lacharite, Myriam; Metaxas, Anna; Matabos, Marjolaine.
Megafaunal diversity in the deep sea shows a parabolic pattern with depth. It can be affected by factors such as low oxygen concentration, which suppresses diversity, or the presence of submarine canyons, which enhances it. Barkley Canyon, located off the west coast of British Columbia, Canada, is a submarine canyon that extends from the continental margin (200 m) into the deep ocean (2,000 m). This canyon receives drift kelp from shoreline kelp forests and contains an oxygen minimum zone (OMZ) at 500 to 1,500 m depth. Our study investigated the abundance and diversity of epibenthic megafauna over a range of depths (200–2,000 m) and oxygen concentrations (0.5–5.0 ml/L) within Barkley Canyon, as well as changes in abundance near detrital kelp. Video was...
Tipo: Text
Palavras-chave: Barkley Canyon; Benthic surveys; British Columbia; Kelp detritus; Oxygen minimum zone; Submarine canyon.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00416/52773/56793.pdf

A Blueprint for an Inclusive, Global Deep-Sea Ocean Decade Field Program
Provedor de dados: 5
Autores: Howell, Kerry L.; Hilário, Ana; Allcock, A. Louise; Bailey, David M.; Baker, Maria; Clark, Malcolm R.; Colaço, Ana; Copley, Jon; Cordes, Erik E.; Danovaro, Roberto; Dissanayake, Awantha; Escobar, Elva; Esquete, Patricia; Gallagher, Austin J.; Gates, Andrew R.; Gaudron, Sylvie M.; German, Christopher R.; Gjerde, Kristina M.; Higgs, Nicholas D.; Le Bris, Nadine; Levin, Lisa A.; Manea, Elisabetta; Mcclain, Craig; Menot, Lenaick; Mestre, Nelia C.; Metaxas, Anna; Milligan, Rosanna J.; Muthumbi, Agnes W. N.; Narayanaswamy, Bhavani E.; Ramalho, Sofia P.; Ramirez-llodra, Eva; Robson, Laura M.; Rogers, Alex D.; Sellanes, Javier; Sigwart, Julia D.; Sink, Kerry; Snelgrove, Paul V. R.; Stefanoudis, Paris V.; Sumida, Paulo Y.; Taylor, Michelle L.; Thurber, Andrew R.; Vieira, Rui P.; Watanabe, Hiromi K.; Woodall, Lucy C.; Xavier, Joana R.
The ocean plays a crucial role in the functioning of the Earth System and in the provision of vital goods and services. The United Nations (UN) declared 2021–2030 as the UN Decade of Ocean Science for Sustainable Development. The Roadmap for the Ocean Decade aims to achieve six critical societal outcomes (SOs) by 2030, through the pursuit of four objectives (Os). It specifically recognizes the scarcity of biological data for deep-sea biomes, and challenges the global scientific community to conduct research to advance understanding of deep-sea ecosystems to inform sustainable management. In this paper, we map four key scientific questions identified by the academic community to the Ocean Decade SOs: (i) What is the diversity of life in the deep ocean? (ii)...
Tipo: Text
Palavras-chave: Deep sea; Blue economy; Ocean Decade; Biodivercity; Essential ocean variables.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00666/77768/79904.pdf

Annual and seasonal dynamics of deep-sea megafaunal epibenthic communities in Barkley Canyon (British Columbia, Canada): a response to climatology, surface productivity and benthic boundary layer variation
Provedor de dados: 5
Autores: Chauvet, Pauline; Metaxas, Anna; Hay, Alex E.; Matabos, Marjolaine.
Understanding the impact of the environment on temporal trends in the composition and abundance of deep-sea species is essential for forecasting evolution of the community in the context of climate change. The recent development of deep-sea observatories enables multidisciplinary studies of long duration and high temporal resolution. We used a platform at the Ocean Networks Canada NEPTUNE Observatory located in the axis of Barkley Canyon between June 2012 and January 2015 to: (1) characterize the megabenthic community and the environmental conditions in the canyon; (2) investigate temporal patterns in the faunal community; and (3) determine the influence of environmental conditions on the observed patterns. The megafaunal epibenthic community, which...
Tipo: Text
Palavras-chave: Deep-sea observatory; Inter-annual variation; Seasonal variation; Deep-sea canyon; Zoobenthos; Oxygen minimum zone; Canada; British Columbia; Barkley Canyon.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00436/54715/56152.pdf

Interannual Variation in the Population Dynamics of Juveniles of the Deep-Sea Crab Chionoecetes tanneri
Provedor de dados: 5
Autores: Chauvet, Pauline; Metaxas, Anna; Matabos, Marjolaine.
Understanding the population dynamics of commercially fished deep-sea species, on seasonal to inter-annual scales, is of great importance in areas where fishing pressure is high. The remoteness of the deep-sea environment constitutes a challenge for monitoring these populations. The few studies that have investigated population structure of deep-sea species, have used trawls, a destructive approach for benthic ecosystems. The development of deep-sea observatories offers a continuous long-term presence on the seafloor. Using imagery from the Ocean Network Canada deep-sea observatory, video footage was acquired on a daily basis and analyzed to describe the population dynamics of the deep-sea crab Chionoecetes tanneri located in depths of 900–1000 m in...
Tipo: Text
Palavras-chave: Marine imagery; Deep-sea observatory; Ocean Network Canada; Oxygen minimum zone; Tanner crab; Reproduction; Temporal trends; British Columbia.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00481/59314/62069.pdf

Foresight Workshop on Advances in Ocean Biological Observations: a sustained system for deep-ocean meroplankton
Provedor de dados: 5
Autores: Cunha, Marina; Génio, Luciana; Pradillon, Florence; Clavel Henry, Morane; Beaulieu, Stace; Birch, James; Campuzano, Francisco; Carretón, Marta; De Leo, Fabio; Gula, Jonathan; Laming, Sven; Lindsay, Dhugal; Matos, Fábio; Metaxas, Anna; Meyer-kaiser, Kirstin; Mills, Susan; Queiroga, Henrique; Rodrigues, Clara; Sarrazin, Jozee; Watanabe, Hiromi; Young, Robert; Young, Craig.
Recent advances in technology have enabled an unprecedented development of underwater research, extending from near shore to the deepest regions of the globe. However, monitoring of biodiversity is not fully implemented in political agendas and biological observations in the deep ocean have been even more limited in space and time. The Foresight Workshop on Advances in Ocean Biological Observations: a sustained system for deep-ocean meroplankton was convened to to foster advances in the knowledge on deep-ocean invertebrate larval distributions and improve our understanding of fundamental deep-ocean ecological processes such as connectivity and resilience of benthic communities to natural and human-induced disturbance. This Meroplankton Observations...
Tipo: Text
Palavras-chave: Deep-ocean observations; Meroplankton; Connectivity; Underwater technology.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00629/74138/73665.pdf