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| Registros recuperados: 5.774 | |
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| Denis Tweddle; Eric Anderson. |
| Collections of fishes from demersal trawl surveys to 800 m depth off the Angolan coast in 2001, 2002 and 2005 resulted in several range extensions tabulated here. Specimens of species poorly represented in previous collections allowed improved diagnoses of Myxine ios, Torpedo bauchotae, Dysommina rugosa, Pisodonophis semicinctus, Xenomystax congroides, Lestidiops cadenati, Ophidion lozanoi, Cataetyx bruuni, Dibranchus atlanticus, Diceratias pileatus, Himantolophus paucifilosus, Neomerinthe folgori, Careproctus albescens, Paracaristius maderensis and Pachycara crossacanthum. All specimens accessioned into the Fish Collection of the South African Institute for Aquatic Biodiversity are listed and colour plates show a selection of species from the trawl catches |
| Tipo: Journal Contribution |
Palavras-chave: Demersal fish; Trawls; Fish species; Marine fish. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/5148 |
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| Van der Lingen, C.D.; Kreiner, A.; Fréon, P.. |
| Time-series of condition factor (CF) and gonadosomatic index (GSI) were generated using general linear models (GLM) for sardine Sardinops sagax stocks in the northern and southern Benguela ecosystems over the period 1984–1999. During this period the biomass of sardine in the northern Benguela remained at relatively low levels of <500 000 tons, whereas that of southern Benguela sardine increased 40-fold to 1.3 million tons. The GLMs explained 27 and 45% of the observed variation in CF, and 32 and 28% of the observed variation in GSI, for sardine in the northern and southern Benguela subsystems respectively. Whereas the sardine CF in the northern Benguela remained stable over time, that for the southern Benguela stock declined steadily during the study... |
| Tipo: Journal Contribution |
Palavras-chave: Abstracts; Ecosystems; Sardine fisheries; Ecosystems; Http://aims.fao.org/aos/agrovoc/c_2482. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/2124 |
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| Nichols, P.. |
| Foreign fishing fleets drastically overfished the waters off Namibia before that country gained independence in 1990, according to Paul Nichols, Special Adviser to the Namibian Ministry of Fisheries and Marine Resources. Since then, the Government has taken strong regulatory actions that have brought overfishing under control and allowed depleted fish stocks to rebuild while gaining strong support for the policy among Namibia's commercial fishers. |
| Tipo: Journal Contribution |
Palavras-chave: Overfishing. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/637 |
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| Njie, M.; Mikkola, H.. |
| User involvement in fisheries management has been around for some time, but few analytical papers have been published on the subject in Africa. Most of these initiatives fall under the rubric of co-management. But what is the concept of co-management in theory and how does it work in practice? In reviewing a comprehensive artisanal fisheries development project, we will attempt to answer this question in the context of The Gambia. |
| Tipo: Journal Contribution |
Palavras-chave: Fisheries management. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/342 |
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| Nakamura, I.; Hattour, A.; Nguira, A.. |
| On January and April, 2004, 4 large oceanic puffer fish (total length 45 to 73.5 cm with body weight 1.12 to 3.2 kg) was caught by the small trammel net, off Tunisian coasts (gulf of Tunis, Monastir and Salakta) and brought into INSTM for the identification. It is a fish belonging to the family of Tetraodontidae, Lagocephalus lagocephalus (Linnaeus). This paper is dealing with the description and some measurement and meristic characters of this specie, which is not a common animal, fished by the Tunisian professional fishermen. |
| Tipo: Journal Contribution |
Palavras-chave: Lagocephalus lagocephalus; Geographical distribution; Fish location; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_5083. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1161 |
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| Korovchinsky, N.M.; Sergeeva, N.G.. |
| The recently described Pseudopenilia bathyalis Sergeeva, 2004, found in the depths of the Black Sea and initially attributed to family Sididae (Crustacea: Cladocera: Ctenopoda), have after reinvestigation been placed in Pseudopenilidae, a new family of the cladoceran order Ctenopoda. The following set of the main diagnostic features characterize Pseudopenilidae: comparatively large antennules with long sensory seta and five aesthetascs; long and massive second antennae with two-segmented branches armed with long, one-segmented, needle-shaped setae without setules; maxillules without long setae; lack of second maxillae; closed brood pouch; six pairs of similar thoracic limbs without gnathobases and filtering setae; small epipodites present only on thoracic... |
| Tipo: Journal Contribution |
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| Ano: 2008 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3878 |
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| Mahmoud, M.A.; Ammar, M.S.A.. |
| A novel and cheep approach for building artificial reefs was designed in such a way that sediments in an area of high sedimentation rate will be utilized in building the artificial substrate with no further sediment accumulation afterwards. The model consists of several steel cylinders which are soldered together in such a way to form a reef flat, a gentle slope and a steep slope, with two layers of narrow opening meshes (a lower plastic and an upper metallic one). Within a short periode (3 months), a substrate layer of a total of ~ 1 cm was formed between the two meshes, this layer increased to ~2 cm after 9 months. Transplants of the three species Stylophora pistillata, Echinopora gemmacea and Montipora spongiosa grow better when the attaching surface is... |
| Tipo: Journal Contribution |
Palavras-chave: Coral reefs; Artificial coral reefs; Transplantation; Substrate; Model; Sedimentation Sediment transport Artificial reefs. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1298 |
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| Angulo-Valdés, J.A.; Hatcher, B.G.. |
| La efectividad de manejo se entiende como el grado en que los objetivos de manejo de un área protegida han sido cumplidos. Antes del 1993 no existían en la literatura trabajos sobre este tema, y solo se encontraban artículos que trataban sobre los objetivos y beneficios de las áreas protegidas vistos desde una perspectiva biológica solamente. En el presente trabajo se desarrolla una nueva metodología para evaluar la efectividad de manejo de un área marina protegida y la misma se aplica a un estudio de caso real. La metodología propuesta constituye una herramienta interdisciplinaria que pudiera mejorar el manejo de las áreas marinas protegidas. Esta metodología constituye un paso adelante que se nutre de las contribuciones anteriores y provee un nuevo... |
| Tipo: Journal Contribution |
Palavras-chave: Management; Marine sciences; Protected areas. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/4926 |
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| Registros recuperados: 5.774 | |
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