Consulta: creatorFacets:"Arbizu, Pedro Martinez"
Registros recuperados: 8
Data/hora: 10/06/2024 18:18:09

Is the meiofauna a good indicator for climate change and anthropogenic impacts?
Provedor de dados: 5
Autores: Zeppilli, Daniela; Sarrazin, Jozee; Leduc, Daniel; Arbizu, Pedro Martinez; Fontaneto, Diego; Fontanier, Christophe; Gooday, Andrew J.; Kristensen, Reinhardt Mobjerg; Ivanenko, Viatcheslav N.; Sorensen, Martin V.; Vanreusel, Ann; Thebault, Julien; Mea, Marianna; Allio, Noemie; Andro, Thomas; Arvigo, Alexandre; Castrec, Justine; Danielo, Morgan; Foulon, Valentin; Fumeron, Raphaelle; Hermabessiere, Ludovic; Hulot, Vivien; James, Tristan; Langonne-augen, Roxanne; Le Bot, Tangi; Long, Marc; Mahabror, Dendy; Morel, Quentin; Pantalos, Michael; Pouplard, Etienne; Raimondeau, Laura; Rio-cabello, Antoine; Seite, Sarah; Traisnel, Gwendoline; Urvoy, Kevin; Van Der Stegen, Thomas; Weyand, Mariam; Fernandes, David.
Our planet is changing, and one of the most pressing challenges facing the scientific community revolves around understanding how ecological communities respond to global changes. From coastal to deep-sea ecosystems, ecologists are exploring new areas of research to find model organisms that help predict the future of life on our planet. Among the different categories of organisms, meiofauna offer several advantages for the study of marine benthic ecosystems. This paper reviews the advances in the study of meiofauna with regard to climate change and anthropogenic impacts. Four taxonomic groups are valuable for predicting global changes: foraminifers (especially calcareous forms), nematodes, copepods and ostracods. Environmental variables are fundamental in...
Tipo: Text
Palavras-chave: Meiofauna; Climate change; Anthropogenic impacts; Biomonitoring; Natural observations and experimental studies.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00278/38938/37521.pdf

Biological responses to disturbance from simulated deep-sea polymetallic nodule mining
Provedor de dados: 5
Autores: Jones, Daniel O. B.; Kaiser, Stefanie; Sweetman, Andrew K.; Smith, Craig R.; Menot, Lenaick; Vink, Annemiek; Trueblood, Dwight; Greinert, Jens; Billett, David S. M.; Arbizu, Pedro Martinez; Radziejewska, Teresa; Singh, Ravail; Ingole, Baban; Stratmann, Tanja; Simon-lledo, Erik; Durden, Jennifer M.; Clark, Malcolm R.
Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here we evaluate changes in faunal densities and diversity of benthic communities measured in response to these 11 simulated or test nodule mining disturbances using meta-analysis techniques. We find that impacts are often severe immediately after mining, with major negative changes in density and diversity of most groups occurring. However, in some cases, the mobile fauna...
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00371/48212/48330.pdf

Resilience of benthic deep-sea fauna to mining activities
Provedor de dados: 5
Autores: Gollner, Sabine; Kaiser, Stefanie; Menzel, Lena; Jones, Daniel O. B.; Brown, Alastair; Mestre, Nelia C.; Van Oevelen, Dick; Menot, Lenaick; Colaco, Ana; Canals, Miguel; Cuvelier, Daphne; Durden, Jennifer M.; Gebruk, Andrey; Egho, Great A.; Haeckel, Matthias; Marcon, Yann; Mevenkamp, Lisa; Morato, Telmo; Pham, Christopher K.; Purser, Autun; Sanchez-vidal, Anna; Vanreusel, Ann; Vink, Annemiek; Arbizu, Pedro Martinez.
With increasing demand for mineral resources, extraction of polymetallic sulphides at hydrothermal vents, cobalt-rich ferromanganese crusts at seamounts, and polymetallic nodules on abyssal plains may be imminent. Here, we shortly introduce ecosystem characteristics of mining areas, report on recent mining developments, and identify potential stress and disturbances created by mining. We analyze species’ potential resistance to future mining and perform meta-analyses on population density and diversity recovery after disturbances most similar to mining: volcanic eruptions at vents, fisheries on seamounts, and experiments that mimic nodule mining on abyssal plains. We report wide variation in recovery rates among taxa, size, and mobility of fauna. While...
Tipo: Text
Palavras-chave: Deep ocean; Disturbance; Minerals; Mining; Abyssal plains; Hydrothermal vents; Seamounts; Resilience; Recovery; Benthos.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00382/49291/49690.pdf

CeDAMar global database of abyssal biological sampling
Provedor de dados: 5
Autores: Stuart, Carol T.; Arbizu, Pedro Martinez; Smith, Craig R.; Molodtsova, Tina; Brandt, Angelika; Etter, Ron J.; Escobar-briones, Elva; Fabri, Marie-claire; Rex, Michael A.
The Census of the Diversity of Abyssal Marine Life (CeDAMar), a division of the Census of Marine Life, has compiled the first comprehensive global database of biological samples taken in the abyssal plains of the world ocean. It is an essential resource for planning future exploration of the abyss, for synthesizing patterns of biogeography and biodiversity, and for environmentally safe exploitation of natural resources. The database is described in this article, and made available to investigators through the CeDAMar website.
Tipo: Text
Palavras-chave: Abyssal; Marine benthos; Database; Deep sea; Biodiversity.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6091.pdf

Deep-sea nematode assemblage has not recovered 26 years after experimental mining of polymetallic nodules (Clarion-Clipperton Fracture Zone, Tropical Eastern Pacific)
Provedor de dados: 5
Autores: Miljutin, Dmitry M.; Miljutina, Maria A.; Arbizu, Pedro Martinez; Galeron, Joelle.
We investigated nematode assemblages inhabiting the 26-year-old track created by experimental deep-sea mining of polymetallic nodules, and two adjacent, undisturbed sites, one with nodules and one without nodules. The aim was to compare density, assemblage structure, and diversity indices in order to assess the process of recovery of the nematode assemblage inhabiting the disturbed site. This experimental dredging was conducted in 1978 by the Ocean Minerals Company (USA) in the area of a French mining claim in the Clarion-Clipperton Fracture Zone (Tropical Eastern Pacific) at a depth of about 5000 m. The nematode assemblage had not returned its initial state 26 years after the experimental dredging: the total nematode density and biomass within the...
Tipo: Text
Palavras-chave: Body volume; Deep-sea; Density; Disturbance; Diversity; Dredging; Mining; Nematode; Nodule; Recolonization; Recovery.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00047/15867/13321.pdf

Potential Mitigation and Restoration Actions in Ecosystems Impacted by Seabed Mining
Provedor de dados: 5
Autores: Cuvelier, Daphne; Gollner, Sabine; Jones, Daniel Ob; Kaiser, Stefanie; Arbizu, Pedro Martinez; Menzel, Lena; Mestre, Nelia C.; Morato, Telmo; Pham, Christopher; Pradillon, Florence; Purser, Autun; Raschka, Uwe; Sarrazin, Jozee; Simon-lledo, Erik; Stewart, Ian M.; Stuckas, Heiko; Sweetman, Andrew K.; Colaco, Ana.
Mining impacts will affect local populations to different degrees. Impacts range from removal of habitats and possible energy sources to pollution and smaller-scale alterations in local habitats that, depending on the degree of disturbance, can lead to extinction of local communities. While there is a shortage or even lack of studies investigating impacts that resemble those caused by actual mining activity, the information available on the potential long-lasting impacts of seabed mining emphasise the need for effective environmental management plans. These plans should include efforts to mitigate deep-sea mining impact such as avoidance, minimisation and potentially restoration actions, to maintain or encourage reinstatement of a resilient ecosystem. A...
Tipo: Text
Palavras-chave: Deep sea; Mining; Restoration; Mitigation; Impacts; Assisted recovery; (re-)colonisation.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00470/58209/60711.pdf

Diversity of Meiofauna from the 9 degrees 50 ' N East Pacific Rise across a Gradient of Hydrothermal Fluid Emissions
Provedor de dados: 5
Autores: Gollner, Sabine; Riemer, Barbara; Arbizu, Pedro Martinez; Le Bris, Nadine; Bright, Monika.
Background: We studied the meiofauna community at deep-sea hydrothermal vents along a gradient of vent fluid emissions in the axial summit trought (AST) of the East Pacific Rise 9 degrees 50'N region. The gradient ranged from extreme high temperatures, high sulfide concentrations, and low pH at sulfide chimneys to ambient deep-sea water conditions on bare basalt. We explore meiofauna diversity and abundance, and discuss its possible underlying ecological and evolutionary processes. Methodology/Principal Findings: After sampling in five physico-chemically different habitats, the meiofauna was sorted, counted and classified. Abundances were low at all sites. A total of 52 species were identified at vent habitats. The vent community was dominated by hard...
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12246/9025.pdf

Threatened by mining, polymetallic nodules are required to preserve abyssal epifauna
Provedor de dados: 5
Autores: Vanreusel, Ann; Hilario, Ana; Ribeiro, Pedro A.; Menot, Lenaick; Arbizu, Pedro Martinez.
Polymetallic nodule mining at abyssal depths in the Clarion Clipperton Fracture Zone (Eastern Central Pacific) will impact one of the most remote and least known environments on Earth. Since vast areas are being targeted by concession holders for future mining, large-scale effects of these activities are expected. Hence, insight into the fauna associated with nodules is crucial to support effective environmental management. In this study video surveys were used to compare the epifauna from sites with contrasting nodule coverage in four license areas. Results showed that epifaunal densities are more than two times higher at dense nodule coverage (&gt;25 versus ≤10 individuals per 100 m2), and that taxa such as alcyonacean and antipatharian corals are...
Tipo: Text
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00340/45166/44560.pdf