|
|
|
| Registros recuperados: 31 | |
|
|
| Macheriotou, Lara; Rigaux, Annelien; Olu, Karine; Zeppilli, Daniela; Derycke, Sofie; Vanreusel, Ann. |
| Cold seeps occur globally in areas where gases escape from the seafloor, occasionally resulting in the formation of topographic depressions (pockmarks), characterised by unique physicochemical conditions such as anoxic and sulphuric sediments. Free-living marine nematodes tend to dominate the meiofaunal component in such environments, often occurring at extremely high densities and low richness; the mechanisms defining community assembly in areas of fluid seepage, however, have received little attention. Here we focus on a low-activity pockmark at 789 m in the Mozambique Channel (MC). We assessed the diversity, co-occurrence patterns and phylogenetic community structure of nematodes at this bathyal site to that of a nearby reference area as well as abyssal... |
| Tipo: Text |
Palavras-chave: Cold seeps; Nematoda; Metabarcoding; Community structure; Phylogenetic community structure. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00679/79080/81524.pdf |
| |
|
|
| Zeppilli, Daniela; Bongiorni, Lucia; Cattaneo, Antonio; Danovaro, Roberto; Santos, R. |
| Seamounts are currently considered hotspots of biodiversity and biomass for macro- and megabenthic taxa, but knowledge of meiofauna is still limited. Studies have revealed the existence of highly diverse meiofauna assemblages; however most data are mainly qualitative or focused only on specific groups, thus preventing comparisons among seamounts and with other deep-sea areas. This study, conducted on Condor Seamount (Azores, North-East Atlantic Ocean), describes variation in abundance, biomass, community structure and biodiversity of benthic meiofauna from five sites located on the Condor Seamount: and one site away from the seamount. While the summit of the seamount hosted the highest alpha biodiversity, the flanks and the bases showed a rich meiofauna... |
| Tipo: Text |
Palavras-chave: Condor Seamount; Meiofauna; Biodiversity; Deep-sea sediments; Azores. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00152/26324/24398.pdf |
| |
|
|
| 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 |
| |
|
|
| Vanreusel, Ann; Fonseca, Gustavo; Danovaro, Roberto; Da Silva, Maria Cristina; Esteves, Andre M.; Ferrero, Tim; Gad, Gunnar; Galtsova, Valentina; Gambi, Cristina; Genevois, Veronica Da Fonseca; Ingels, Jeroen; Ingole, Baban; Lampadariou, Nikolaos; Merckx, Bea; Miljutin, Dmitry; Miljutina, Maria; Muthumbi, Agnes; Netto, Sergio; Portnova, Daria; Radziejewska, Teresa; Raes, Maarten; Tchesunov, Alexei; Vanaverbeke, Jan; Van Gaever, Saskia; Venekey, Virag; Bezerra, Tania Nara; Flint, Hannah; Copley, John; Pape, Ellen; Zeppilli, Daniela; Martinez, Pedro Arbizu; Galeron, Joelle. |
| The great variety of geological and hydrological conditions in the deep sea generates many different habitats. Some are only recently explored, although their true extent and geographical coverage are still not fully established. Both continental margins and mid-oceanic seafloors are much more complex ecologically, geologically, chemically and hydrodynamically than originally thought. As a result, fundamental patterns of species distribution first observed and explained in the context of relatively monotonous slopes and abyssal plains must now be re-evaluated in the light of this newly recognized habitat heterogeneity. Based on a global database of nematode genus composition, collected as part of the Census of Marine Life, we show that macrohabitat... |
| Tipo: Text |
Palavras-chave: Biodiversity; Census of marine life; Deep sea; Habitat heterogeneity; Meiofauna; Nematode genera. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00002/11280/11783.pdf |
| |
|
|
| Michelet, Claire; Zeppilli, Daniela; Hubas, Cédric; Baldrighi, Elisa; Cuny, Philippe; Dirberg, Guillaume; Militon, Cécile; Walcker, Romain; Lamy, Dominique; Jézéquel, Ronan; Receveur, Justine; Gilbert, Franck; Houssainy, Amonda El; Dufour, Aurélie; Heimbürger-boavida, Lars-eric; Bihannic, Isabelle; Sylvi, Léa; Vivier, Baptiste; Michaud, Emma. |
| Bioindicators assess the mangroves ecological state according to the types of pressures but they differ with the ecosystem’s specificities. We investigated benthic meiofauna diversity and structure within the low human-impacted mangroves in French Guiana (South America) in response to sediment variables with various distances to the main city. Contaminant’s concentrations differed among the stations, but they remained below toxicity guidelines. Meiofauna structure (Foraminifera, Kinorhyncha, Nematoda) however varied accordingly. Nematode’s identification brought details on the sediment’s quality. The opportunistic genus Paraethmolaimus (Jensen, 1994) strongly correlated to the higher concentrations of Hg, Pb. Anoxic sediments were marked by organic... |
| Tipo: Text |
Palavras-chave: Mangroves; Biodiversity; Meiofauna; Nematode; Anthropogenic pressures; Natural contamination; South America. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00684/79587/82274.pdf |
| |
|
|
| Zeppilli, Daniela; Leduc, Daniel; Fontanier, Christophe; Fontaneto, Diego; Fuchs, Sandra; Gooday, Andrew J.; Goineau, Aurelie; Ingels, Jeroen; Ivanenko, Viatcheslav N.; Kristensen, Reinhardt Mobjerg; Neves, Ricardo Cardoso; Sanchez, Nuria; Sandulli, Roberto; Sarrazin, Jozee; Sorensen, Martin V.; Tasiemski, Aurelie; Vanreusel, Ann; Autret, Marine; Bourdonnay, Louis; Claireaux, Marion; Coquille, Valerie; De Wever, Lisa; Rachel, Durand; Marchant, James; Toomey, Lola; Fernandes, David. |
| Extreme marine environments cover more than 50% of the Earth’s surface and offer many opportunities for investigating the biological responses and adaptations of organisms to stressful life conditions. Extreme marine environments are sometimes associated with ephemeral and unstable ecosystems, but can host abundant, often endemic and well-adapted meiofaunal species. In this review, we present an integrated view of the biodiversity, ecology and physiological responses of marine meiofauna inhabiting several extreme marine environments (mangroves, submarine caves, Polar ecosystems, hypersaline areas, hypoxic/anoxic environments, hydrothermal vents, cold seeps, carcasses/sunken woods, deep-sea canyons, deep hypersaline anoxic basins [DHABs] and hadal zones).... |
| Tipo: Text |
Palavras-chave: Extreme environments; Meiofauna; Mangroves; Submarine caves; Polar ecosystems; Melting ice; Hypersaline areas; Anoxic and hypoxic zones; Hydrothermal vents; Cold seeps; Carcasses and sunken woods; Deep sea; Submarine canyons; Deep hypersaline anoxic basins (DHABs); Hadal zones. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00410/52140/52851.pdf |
| |
|
|
| Spedicato, Adriana; Sánchez, Nuria; Pastor, Lucie; Menot, Lenaick; Zeppilli, Daniela. |
| The risk assessment of seafloor massive sulfide (SMS) mining on meiobenthic organisms, specifically on soft-sediment meiofauna, is impeded by a lack of knowledge on the biology and ecology of these communities. In this study, we investigated sediment samples taken in proximity of active vents at Trans-Atlantic Geotraverse (TAG) and Snake Pit, two hydrothermal vent fields of the Mid-Atlantic Ridge, in order to explore metazoan meiofauna, particularly nematode community, and its relation to organic carbon, total nitrogen, total sulfur, and dissolved oxygen. Organic carbon and nitrogen contents were low at both sites. High concentrations of total sulfur and low oxygen penetration were found at Snake Pit compared to TAG. Snake Pit showed approximately four... |
| Tipo: Text |
Palavras-chave: Meiobenthos; Nematoda; Mid-Atlantic Ridge; Seafloor massive sulfides; Biodiversity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00629/74061/73507.pdf |
| |
|
| |
|
| |
|
|
| Cepeda, Diego; Pardos, Fernando; Zeppilli, Daniela; Sánchez, Nuria. |
| Cold seep areas are extremely reduced habitats with spatiotemporal variation of hydrocarbon-rich fluid seepage, low oxygen levels, and great habitat heterogeneity. Cold seeps can create circular to ellipsoid shallow depressions on the seafloor called pockmarks. We investigated two selected pockmarks, characterized by different gas emission, and two sites outside these geological structures at the Mozambique Channel to understand whether and how their environmental conditions affect the kinorhynch fauna in terms of density, richness, and community composition. A total of 11 species have been found living in the studied area, of which three are new species: Fissuroderes cthulhu sp. nov., Fujuriphyes dagon sp. nov., and Fujuriphyes hydra sp. nov. Densities... |
| Tipo: Text |
Palavras-chave: Cold seeps; Deep sea; Ecology; Kinorhynchs; Meiofauna; Diversity; Taxonomy. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00648/75992/76894.pdf |
| |
|
|
| Cuvelier, Daphne; Beesau, Julie; Ivanenko, Viatcheslav; Zeppilli, Daniela; Sarradin, Pierre-marie; Sarrazin, Jozee. |
| In 2006, paired wood and slate panels, each equipped with a temperature probe, were deployed on three different localities on and around the Eiffel Tower edifice (Lucky Strike vent field, Mid-Atlantic Ridge) within close proximity of visible hydrothermal activity. Recovery of these panels took place in 2008. For this two-year deployment period, the composition of colonising organisms (both macro-and meiofauna) was assessed, along with image analyses of the deployment sites in 2006 and 2008. Very few significant differences in colonisation between organic (wood) and inorganic (slate) panels were revealed. Rather, the locality of deployment and the local environmental conditions and hydrothermal activity were found to influence taxonomic composition.... |
| Tipo: Text |
Palavras-chave: Colonisation; Organic and inorganic substrata; Mid-Atlantic Ridge; Hydrothermal; Recruitment; Diversity; Temperature. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00180/29090/27505.pdf |
| |
|
|
| Baldrighi, Elisa; Dovgal, Igor; Zeppilli, Daniela; Abibulaeva, Alie; Michelet, Claire; Michaud, Emma; Franzo, Annalisa; Grassi, Eleonora; Cesaroni, Lucia; Guidi, Loretta; Balsamo, Maria; Sandulli, Roberto; Semprucci, Federica. |
| Epibiosis is a common phenomenon in marine systems. In marine environments, ciliates are among the most common organisms adopting an epibiotic habitus and nematodes have been frequently reported as their basibionts. In the present study, we report several new records of peritrich and suctorian ciliates-nematode association worldwide: from a deep-sea pockmark field in the NW Madagascar margin (Indian Ocean), from a shallow vent area in the Gulf of Naples (Mediterranean, Tyrrhenian Sea), in a MPA area in the Gulf of Trieste (Mediterranean, Adriatic Sea), from a mangrove system in French Guiana (South America, Atlantic Ocean), and from the Maldivian Archipelago. In addition, three new species of Suctorea from the Secca delle Fumose shallow vent area (Gulf of... |
| Tipo: Text |
Palavras-chave: Epibiosis; Ciliophora; Suctorea; Nematoda; Meiofauna; Biodiversity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00632/74417/74132.pdf |
| |
|
|
| Alfaro Lucas, Joan Manel; Pradillon, Florence; Zeppilli, Daniela; Michel, Loic; Martinez‐arbizu, P; Tanaka, H; Foviaux, M; Sarrazin, Jozee. |
| Productivity and environmental stress are major drivers of multiple biodiversity facets and faunal community structure. Little is known on their interacting effects on early community assembly processes in the deep sea (>200 m), the largest environment on Earth. However, at hydrothermal vents productivity correlates, at least partially, with environmental stress. Here, we studied the colonization of rock substrata deployed along a deep‐sea hydrothermal vent gradient at four sites with and without direct influence of vent fluids at 1700 m depth in the Lucky Strike vent field (Mid‐Atlantic Ridge, MAR). We examined in detail the composition of faunal communities (>20 µm) established after two years and evaluated species and functional patterns. We... |
| Tipo: Text |
Palavras-chave: Colonization; Community assembly; Energy; Environmental filtering; Functional beta-diversity; Species beta-diversity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00641/75342/76070.pdf |
| |
|
|
| Appolloni, Luca; Zeppilli, Daniela; Donnarumma, Luigia; Baldrighi, Elisa; Chianese, Elena; Russo, Giovanni Fulvio; Sandulli, Roberto. |
| One of the most important pieces of climate change evidence is ocean acidification. Acidification effects on marine organisms are widely studied, while very little is known regarding its effects on assemblages’ β-diversity. In this framework, shallow hydrothermal vents within a Marine Protected Area (MPA) represent natural ecosystems acting as laboratory set-ups where the continuous carbon dioxide emissions affect assemblages with consequences that can be reasonably comparable to the effects of global water acidification. The aim of the present study is to test the impact of seawater acidification on the β-diversity of soft-bottom assemblages in a shallow vent field located in the Underwater Archeological Park of Baia MPA (Gulf of Naples, Mediterranean... |
| Tipo: Text |
Palavras-chave: Marine Protected Areas; Hydrothermal vents; β -diversity; Acidification; Climate changes. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00663/77470/79163.pdf |
| |
|
|
| Baldrighi, Elisa; Vanreusel, A.; Zeppilli, Daniela; Sandulli, R.; Segonzac, Michel. |
| Several individuals belonging to a new species of the genus Chromadorita (Nematoda: Adenophorea) were collected in a cold-seep area in the Gulf of Guinea during two French cruises: BIOZAIRE 2 (2001) and BIOZAIRE 3 (2003-2004) on board the R/V L'Atalante. In this area, rich chemosynthetic benthic communities have been discovered at 3150 m depth in the large pockmark field named Regab. Chromadorita regabi sp. nov. was found among the eggs in ovigerous specimens of the shrimp Alvinocaris muricola. The combination of long size (1500-2200 mu m), nine strong preanal papillae and relatively small dorsal tooth with weak musculature distinguishes this species from all known congeneric ones. An identification key to all known species of Chromadorita is provided. |
| Tipo: Text |
Palavras-chave: Chromadorita regabi; Cold seep; Gulf of Guinea; Alvinocaris muricola. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56599/58271.pdf |
| |
|
|
| Husson, Berengere; Sarradin, Pierre-marie; Zeppilli, Daniela; Sarrazin, Jozee. |
| In community ecology, niche analysis is a classic tool for investigating species’ distribution and dynamics. Components of a species’ niche include biotic and abiotic factors. In the hydrothermal vent ecosystem, although composition and temporal variation have been investigated since these deep-sea habitats were discovered nearly 40 years ago, the roles and the factors behind the success of the dominant species of these ecosystems have yet to be fully elucidated. In the Lucky Strike vent field on the Mid Atlantic Ridge (MAR), the dominant species is the mussel Bathymodiolus azoricus. Data on this species and its associated community were collected during four oceanographic cruises on the Eiffel Tower edifice and integrated in a novel statistical framework... |
| Tipo: Text |
Palavras-chave: Bathymodiolus azoricus; OMI; Habitat; Niche; Mid-Atlantic ridge; Lucky strike. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00341/45254/44692.pdf |
| |
|
|
| Brandt, Miriam; Pradillon, Florence; Trouche, Blandine; Henry, Nicolas; Liautard-haag, Cathy; Cambon-bonavita, Marie-anne; Cueff-gauchard, Valerie; Wincker, Patrick; Belser, Caroline; Poulain, Julie; Arnaud-haond, Sophie; Zeppilli, Daniela. |
| Despite representing one of the largest biomes on earth, biodiversity of the deep seafloor is still poorly known. Environmental DNA metabarcoding offers prospects for fast inventories and surveys, yet requires standardized sampling approaches and careful choice of environmental substrate. Here, we aimed to optimize the genetic assessment of prokaryote (16S), protistan (18S V4), and metazoan (18S V1–V2, COI) communities, by evaluating sampling strategies for sediment and aboveground water, deployed simultaneously at one deep-sea site. For sediment, while size-class sorting through sieving had no significant effect on total detected alpha diversity and resolved similar taxonomic compositions at the phylum level for all markers studied, it effectively... |
| Tipo: Text |
Palavras-chave: Biodiversity; Ecological genetics; Microbial ecology; Molecular ecology. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00689/80094/83149.pdf |
| |
|
|
| Zeppilli, Daniela; Bongiorni, Lucia; Serrao Santos, Ricardo; Vanreusel, Ann. |
| Several seamounts are known as ‘oases’ of high abundances and biomass and hotspots of biodiversity in contrast to the surrounding deep-sea environments. Recent studies have indicated that each single seamount can exhibit a high intricate habitat turnover. Information on alpha and beta diversity of single seamount is needed in order to fully understand seamounts contribution to regional and global biodiversity. However, while most of the seamount research has been focused on summits, studies considering the whole seamount structure are still rather poor. In the present study we analysed abundance, biomass and diversity of nematodes collected in distinct physiographic sites and surrounding sediments of the Condor Seamount (Azores, North-East Atlantic Ocean).... |
| Tipo: Text |
|
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00244/35528/34043.pdf |
| |
|
| |
|
|
| Bruno, Renato; Maresca, Marc; Canaan, Stéphane; Cavalier, Jean-françois; Mabrouk, Kamel; Boidin-wichlacz, Céline; Olleik, Hamza; Zeppilli, Daniela; Brodin, Priscille; Massol, François; Jollivet, Didier; Jung, Sasha; Tasiemski, Aurélie. |
| Antimicrobial peptides (AMPs) are natural antibiotics produced by all living organisms. In metazoans, they act as host defense factors by eliminating microbial pathogens. But they also help to select the colonizing bacterial symbionts while coping with specific environmental challenges. Although many AMPs share common structural characteristics, for example having an overall size between 10–100 amino acids, a net positive charge, a γ-core motif, or a high content of cysteines, they greatly differ in coding sequences as a consequence of multiple parallel evolution in the face of pathogens. The majority of AMPs is specific of certain taxa or even typifying species. This is especially the case of annelids (ringed worms). Even in regions with extreme... |
| Tipo: Text |
Palavras-chave: Antibiotics; Annelids; Nematodes; AMP; Extremophiles. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00511/62307/66556.pdf |
| |
| Registros recuperados: 31 | |
|
|
|
