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| Registros recuperados: 196 | |
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| Shannon, L.V.; O’Toole, M.J.. |
| The Benguela Current ecosystem is situated along the coast of south western Africa, stretching from east of the Cape of Good Hope, in the south, northwards into Angola waters and encompassing the full extent of Namibia’s marine environment. It is one of the four major coastal upwelling ecosystems of the world which lie at the eastern boundaries of the oceans. Like the Humboldt, California and Canary systems, the Benguela is an important centre of marine biodiversity and marine food production. Its distinctive bathymetry, hydrography, chemistry and trophodynamics combine to make it one of the most productive ocean areas in the world, with a mean annual primary productivity of 1.25 kilograms of carbon per square metre per year—about six times higher than the... |
| Tipo: Book Section |
Palavras-chave: Ecosystems; Sustainability. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/396 |
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| Mangrove ecosystems on the coast of Cameroon are valuable both for their contributions to local livelihoods and the globally important biodiversity that they contain. However, these areas are threatened by a number of development pressures as well as unsustainable management and harvesting practices of the local communities living there. This project aims to strengthen protection and reduce degradation in these areas by supporting inter-sectoral co-ordination and collaboration (within an agreed national framework) and by helping local communities to redirect local economic activities towards activities that both improve their livelihoods as well as assist with the conservation of globally important biodiversity found in these areas. At the national level,... |
| Tipo: Report |
Palavras-chave: Mangroves; Biodiversity; Ecosystems. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/5478 |
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| Best, Mairi M. R.; Favali, Paolo; Beranzoli, Laura; Blandin, Jerome; Cagatay, Namik M.; Cannat, Mathilde; Jose Danobeitia, Juan; Delory, Eric; De Miranda, Jorge M. A.; Del Rio Fernandez, Joaquin; De Stigter, Henko; Gillooly, Mick; Grant, Fiona; Hall, Per O. J.; Hartman, Susan; Hernandez-brito, Joaquin; Lanteri, Nadine; Mienert, Juergen; Oaie, Gheorge; Piera, Jaume; Radulescu, Vlad; Rolin, Jean-francois; Ruhl, Henry A.; Waldmann, Christoph. |
| The European Multidisciplinary Seafloor and water-column Observatory (EMSO) European Research Infrastructure Consortium (ERIC) provides power, communications, sensors, and data infrastructure for continuous, high-resolution, (near-)real-time, interactive ocean observations across a multidisciplinary and interdisciplinary range of research areas including biology, geology, chemistry, physics, engineering, and computer science, from polar to subtropical environments, through the water column down to the abyss. Eleven deep-sea and four shallow nodes span from the Arctic through the Atlantic and Mediterranean, to the Black Sea. Coordination among the consortium nodes is being strengthened through the EMSOdev project (H2020), which will produce the EMSO Generic... |
| Tipo: Text |
Palavras-chave: Ocean Observatory Consortium; Europe; Geohazards; Climate change; Ecosystems. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00343/45442/45806.pdf |
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| Rees, Hubert; Eggleton, Jacqueline D.; Vanden Berghe, Edward; Aldridge, John; Bergman, Magda J. N.; Boalm,; Cochrane, Sabine; Craeymeersch, Johan A.; Degraer, Steven; Desroy, Nicolas; Dewarumez, Jean-marie; Duineveld, Gca; Essink, Karel; Goethals,; Hillewaert, Hans; Irion,; Kershaw, Peter; Kroncke, Ingrid; Lavayele, Marc; Mason, Claire; Nehring, Stefan; Newell, Richard; Oug, Eivind; Pohlman, Thomas; Reiss, Henning; Robertson, Mike; Rumorh, Heye; Schratzberger, Michaela; Smith,; Van Dalfsen, Jan; Van Hoey, Gert; Vincx, Magda; Willems, Wouter. |
| The ICES Study Group on the North Sea Benthos Project 2000 undertook to integrate recent (1999–2002) macrobenthic infaunal and environmental data from various national sources. The main aim was to compare the outcome with that of the ICES North Sea Benthos Survey conducted in 1986, to identify any significant changes and their likely causes. In the process, the exercise yielded valuable lessons for the conduct of international collaborative programmes, as well as insights into the utility of a range of interpretational tools. These are timely in view of increasing requirements for periodic sea-wide assessments of quality status to meet international obligations, such as those under OSPAR, ICES, HELCOM, and EU auspices for European waters. This paper... |
| Tipo: Text |
Palavras-chave: Macrobenthos; Infauna; Sediments; Communities; Ecosystems; North Sea. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/00158/26893/25024.pdf |
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| Foltz, G. R.; Brandt, P.; Richter, I.; Rodríguez-fonseca, B.; Hernandez, F.; Dengler, M.; Rodrigues, R. R.; Schmidt, J. O.; Yu, L.; Lefevre, N.; Da Cunha, L. Cotrim; Mcphaden, M. J.; Araujo, M.; Karstensen, J.; Hahn, J.; Martín-rey, M.; Patricola, C. M.; Poli, P.; Zuidema, P.; Hummels, R.; Perez, Rc; Hatje, V.; Lübbecke, J. F.; Polo, I.; Lumpkin, R.; Bourlès, Bernard; Asuquo, F. E.; Lehodey, P.; Conchon, A.; Chang, P.; Dandin, P.; Schmid, C.; Sutton, A.; Giordani, H.; Xue, Y.; Illig, S.; Losada, T.; Grodsky, S. A.; Gasparin, F.; Lee, T.; Mohino, E.; Nobre, P.; Wanninkhof, R.; Keenlyside, N.; Garcon, V.; Sánchez-gómez, E.; Nnamchi, H. C.; Drévillon, M.; Storto, A.; Remy, E.; Lazar, A.; Speich, S.; Goes, M.; Dorrington, T.; Johns, W. E.; Moum, J. N.; Robinson, C.; Perruche, Coralie; De Souza, R. B.; Gaye, A. T.; López-parages, J.; Monerie, P.-a.; Castellanos, P.; Benson, N. U.; Hounkonnou, M. N.; Duhá, J. Trotte; Laxenaire, R.; Reul, Nicolas. |
| The tropical Atlantic is home to multiple coupled climate variations covering a wide range of timescales and impacting societally relevant phenomena such as continental rainfall, Atlantic hurricane activity, oceanic biological productivity, and atmospheric circulation in the equatorial Pacific. The tropical Atlantic also connects the southern and northern branches of the Atlantic meridional overturning circulation and receives freshwater input from some of the world’s largest rivers. To address these diverse, unique, and interconnected research challenges, a rich network of ocean observations has developed, building on the backbone of the Prediction and Research Moored Array in the Tropical Atlantic (PIRATA). This network has evolved naturally over time... |
| Tipo: Text |
Palavras-chave: Tropical Atlantic Ocean; Observing system; Weather; Climate; Hurricanes; Biogeochemistry; Ecosystems; Coupled model bias. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00494/60612/64096.pdf |
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| Rydberg, L.; de Boer, W.F.; Saide, V.. |
| Sediment characteristics and tidal currents were studied in the 1500 ha intertidal area south of Inhaca Island, Mozambique. Thetide is semi-diurnal with a range at spring of about 3 m. The area connects directly to the ocean through the Ponta Torres Straitand (indirectly) through several narrow tidal channels ending up in Maputo Bay. Velocities of up to 0.75 m s-1 were measured in the Ponta Tones strait. After Low Water, Indian ocean water starts entering the tidal flats, while entrance from the MaputoBay side is delayed by one to several hours. With only one tide gauge and one current meter at hand, we found indications of ahigher mean sea level on the oceanic side (probably due to ocean wave set up) and a mean flow in the Ponta Torres Straitdirected... |
| Tipo: Journal Contribution |
Palavras-chave: Tidal currents; Ecosystems. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/701 |
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| Tackx, M.. |
| When considering zooplankton feeding as one of the pathways involved in the transfer of substances in marine ecosystems, it is important to study the composition and size distribution of the seston: firstly, the elements in which one is interested may be associated with different types and sizes of particles; secondly, particle size and composition are important factors in relation t o the feeding process of the zooplankton itself. High speed cinematographic studies have recently revealed that copepods use two different mechanisms for feeding. Small particles (< 12 pm) are collected by continuous low amplitude movements of the second maxillae and combing of the appendages. Larger particles are detected and collected individually by means of a specific... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecosystems; Seston; Zooplankton. |
| Ano: 1984 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3273 |
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| Ndirangu, S.; Uku, J.; Muthama, C.. |
| In May 1999, two sites were selected within the Mombasa Marine Park and Reserve for the study of macroalgal succession due to bleaching. One of the sites was Starfish, which lies within the Mombasa Marine Park and is protected from fishing and the other site was Ras Iwatine, which lies in the Reserve area and is Subjected to fishing activities. The study revealed that the Starfish site had a significantly higher hard coral cover, which did not change over the study period. A comparison of the density of macroalgae revealed that a higher proportion of the substrate in Ras Iwatine was dominated by macroalgae. Settlement tiles, used to study algal recruitment, indicated that the succession process in the Starfish site passes through more stages compared to... |
| Tipo: Working Paper |
Palavras-chave: Algal blooms; Coral reefs; Ecosystems. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/123 |
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| Kirchner, C. H.; Bartholomae, C. H.; Kreiner, A.. |
| This study attempts to explain the variability in recruitment of sardine in the northern Benguela and to develop potential models by including environmental information to predict recruitment. Two different recruitment and spawner number datasets were available: a VPA-developed dataset, for the period 1952–1987, and data from a simple age-structured model for 1992–2007. In all, four environmental indices were used: the degree of the intrusion of the warm Angola Current into northern Namibia, termed the Angola–Benguela front index; the extent of the upwelling area off central Namibia; average sea surface temperature (SST) over the northern and central Namibian shelf; and wind stress anomalies at Lüderitz as an indicator of upwelling strength. Contrary to... |
| Tipo: Journal Contribution |
Palavras-chave: Currents (water); Upwelling; Sardine fisheries; Environments; Ecosystems; Anomalies; Biomass; Spawning; Recruitment. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4671 |
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| Registros recuperados: 196 | |
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