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| Registros recuperados: 5.192 | |
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| Lattig, P.; Reyes, J.. |
| During INVEMAR-MACROFAUNA cruises (1998-1999), carried out along the upper continental slope of the Colombian Caribbean, 26 species of corals were collected, nine of them are first records for the area. The distribution ranges of Schizocyathus frissilis, Balanophyllia cyathoides, B. palifera and B. bayeri are extended yo the southern Caribbean. It is presented a list of the azooxanthellate coral species of the Colombian Caribbean. |
| Tipo: Journal Contribution |
Palavras-chave: Continental slope. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/3114 |
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| Ibe, A.C.. |
| In the recent past, climatic changes and variations have occurred in Nigeria with resulting adverse socio-economic impact. From these experiences, it is inferred that the expected change in global climate will have far reaching disastrous consequences for Nigeria if appropriate anticipatory technical and policy Measure are not taken. More recent results from various models based on an eventual warming from a doubling of greenhouse gases of between 1.5 and 5oC by the end of the 21st century predict an acceleration of the eustatic rise in sea level from 1.2-1.5mm/yr. over the last hundred year s to 4 – 6mm/yr. although previous estimates were much higher [e.g.56–3.68m by the end of the 21 century] on the low lying Coastal zone of Nigeria, which is rich in... |
| Tipo: Report |
Palavras-chave: Coastal zone management; Climatic changes. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/2406 |
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| Giberto, D.A.; Bremec, C.; Cortelezzi, A.; Rodrigues Capitulo, A.; Brazeiro, A.. |
| In this study, we analyse spatial patterns of macrobenthic communities of the Río de la Plata system, and assess the species turnover or beta diversity and its relationship with environmental gradients. Macrobenthic samples and physico-chemical parameters were collected from 20 sampling sites along a transect of 560 km, including the freshwater (FW), estuarine (ES)and marine (MA)sectors. Three main assemblages corresponding to the above mentioned sectors were defined with multivariate analysis (cluster, MDS). In total 134 taxa were recorded, 81 in MA, 33 in FW and 38 in ES, represented mainly by polychaete, mollusc and crustacean species. Depth, salinity and clay showed the strongest correlation with the observed faunal... |
| Tipo: Journal Contribution |
Palavras-chave: Macrobenthos; Assemblages; Brackishwater environment; Estuaries; Estuaries; Macrobenthos; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_12312; Http://aims.fao.org/aos/agrovoc/c_1050. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1571 |
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| Mwachireya, S.; Uku, J.N.; Mdodo, R.; Obura, D.; Wawiye, P.. |
| Coral reefs along the entire coast of Kenya suffered widespread bleaching and mortality of corals during the first half of 1998 (Wilkinson, 1998; Obura, 1999; McClanahan et al., 1999). This status report summarises findings relating specifically to coral bleaching, mortality and effects on benthic community structure. In addition, preliminary results from a number of research projects investigating different aspects of the bleaching event are reported here. In shallow waters, on a per-area basis, most of Kenya’s southern fringing reefs have lost between 66% and 80% of their live corals. Coral reefs in deeper water suffered less mortality due to lesser exposure to higher temperatures. Reefs on the northern part of the coast, influenced by cold water... |
| Tipo: Report |
Palavras-chave: Coral reefs; Ecology. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/774 |
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| Bernal, G.; Velásquez, A.; Vargas, I.; Agudelo, A.C.; Andrade, C.A.; Domínguez, J.G.; Ricaurte, C.; Mayo, G.. |
| To understand sedimentation processes at Salmedina Reef Banks during the annual cycle, three cylindrical sediment traps were installed on the flat top of the reef Banks at mean depth of 8.5 m. Cylinders were collected monthly between July, 2003 and September, 2004. The trap content was analyzed by bulk composition and the composition of biogenic calcareous particles from the sand fraction. Results were compared with environmental parameters of the area trough the same time span. Sedimentological variables were analyzed with emphasis on terrigenous supply and relative percentages of calcareous components related to location and physical parameters. It was found that the totality of sedimentation, terrigenous contribution included, was concentrated during... |
| Tipo: Journal Contribution |
Palavras-chave: Reefs; Sediment traps. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1976 |
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| Salzwedel, H.; Muller, K.. |
| Un resumen de datos meteorológicos e hidrológicos para la Bahía de Santa Marta, Caribe colombiano. Se presentan datos de precipitación, temperatura y salinidad del agua superficial para la Bahía de Santa Marta, Caribe colombiano, para el periodo de noviembre 1978 a mayo 1982. Se obtienen generalizaciones de los patrones anuales incluyendo datos ya publicados (Muller, 1979). A partir de mediciones adicionales de la variación de la temperatura del agua y de la salinidad durante el día, valores preliminares de cuantos de luz, junto con datos disponibles sobre contenido y saturación de oxigeno, pH, alcalinidad, estabilidad, dirección y velocidad del viento, horas de luz, temperatura del aire y descarga del Río Manzanares, se hace una caracterización... |
| Tipo: Journal Contribution |
Palavras-chave: Meteorology; Physical oceanography; Physical oceanography; Meteorology; Http://aims.fao.org/aos/agrovoc/c_5830; Http://aims.fao.org/aos/agrovoc/c_4783. |
| Ano: 1983 |
URL: http://hdl.handle.net/1834/3972 |
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| Nyandwi, N.; Muzuka, A.N.N.; Shaghude, Y.W.. |
| Along the coast of Tanzania, coral reefs, marine terraces and beach ridges are among the most important geomorphological features indicative of the Pleistocene/Holocene sea level changes. Three major terrace units can easily be identified on the mainland coast, namely, Mtoni (youngest), Tanga and Sakura (oldest). Three terrace units have also been identified on the Islands of Unguja and Pemba. On the basis of the difference in the terrace elevations between the two terrace systems it is postulated that the marine terraces on the islands probably represent minor fluctuations of sea level, rather than major phases of sea level fluctuation. A sand beach on the seaward side and several sand ridges on the landward side represent the Recent phase. The oldest... |
| Tipo: Report |
Palavras-chave: Geology; Pleistocene; Holocene. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/818 |
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| Merchán-Cepeda, A.; Campos, N.H.; Franco, A.; Bermúdez, A.. |
| Durante la expedición INVEMAR-Macrofauna Ii, realizada en 2001 a lo largo de la plataforma y franja superior del talud continental del Caribe colombiano, a profundidades entre 20 y 500 m, se colectaron ejemplares de 22 especies de cangrejos ermitaños, distribuidos en una superfamilia y cuatro familias. Dentro de la superfamilia Paguroidea, la familia Paguridae fue la más abundante y rica con 13 especies, seguida de la familia Diogenidae con seis especies; la Para paguridae estuvo representada por dos especies y un único ejemplar del género Trizocheles de la familia Pylochelidae, lo que reperesenta el primer registro el primer registro de esta familia en la región. Se colectaron además, cinco morfotipos no identificados de... |
| Tipo: Journal Contribution |
Palavras-chave: Taxonomy; Distribution; Taxonomy; Distribution; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_35773. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3611 |
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| Ohassane, K.. |
| While industrial growth is mainly a function of market forces, governments actively pursue policies and activities to accelerate industrialization. These policies, directly or indirectly, affect the natural environment. Sound industrial and environmental policies are not incompatible, even though it is difficult task either to set and enforce at the same time environmental standard that do not have some negative impact on industrial development options, or to formulate industrial policies that take environmental issues fully into account. The objective of this study is to elaborate a national assessment for the purpose of the industrial environment overview in the process of sustainable development in Côte d’Ivoire which is a part of the systematic... |
| Tipo: Report |
Palavras-chave: Ivory Coast; Environment; Industrialization; Industrialization; Environments. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/631 |
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| Urteaga, J.R.; Perrotta, R.G.. |
| Argentine black drum distributes mainly in shallow waters associated to estuarine areas, particularly to Samborombon Bay where it may be detected throughout the year. Nevertheless, it can also be spotted more southwards (40°S) and at deeper waters. During summer, catches of the species in Samborombon Bay are practically negligible, probably due to movements towards shallow waters out of reach of the inshore commercial fleet. Landings increase in autumn and show peak values in winter, coinciding with the fishing season of whitemouth croaker, Micropogonias furnieri, whose geographical distribution within the bay overlaps that of black drum. As of 1995, landings of black drum showed increasing trends both in Argentina and Uruguay. These increments coincide... |
| Tipo: Journal Contribution |
Palavras-chave: Age determination; Growth; Landing statistics; Geographical distribution; Fishery management; Coastal fisheries; Growth; Age determination; Geographical distribution; Fishery management; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_1696. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/2593 |
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| Buriyo, A.S.; Kivaisi, A.K.. |
| Seasonal biomass variation and agar yield of G. salicornia (C. Ag.) Dawson from Oyster Bay, Dar es Salaam, and Chwaka Bay, Zanzibar, were determined, and some properties of the agar examined. Mean biomass and canopy cover values ranged from 21–60 g/m2 and 7– 20 %, respectively. The highest mean biomass and cover values were obtained during the SE monsoon. Agar yield varied from 13.7 to 30.2 % (dry weight) and was highest during the dry NE monsoon period. Alkali treatment generally reduced agar yield by 25–56 %. Gel strength of the agar gels ranged between 118 and 251 g/cm2 and was significantly higher during the NE monsoon period (t = 2.2; P = 0.04 and t = 8.9; P << 0.05) for samples collected from Oyster Bay and... |
| Tipo: Journal Contribution |
Palavras-chave: Agar; Biomass. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/964 |
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| Registros recuperados: 5.192 | |
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