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| Registros recuperados: 13 | |
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| Beyst, B.; Mees, J.; Cattrijsse, A.. |
| Early (post)larval fish constitute a significant part of the temporary hyperbenthos, i.e. of the fauna living in the lower reaches of the water column close to the substratum. Information on the densities and spatial and temporal variations of these stages, as well as on their lengths at the moment of occurrence, can be an important contribution to the knowledge of their dispersion, migrations and to the identification of possible bottlenecks in their recruitment. Therefore the hyperbenthos of the Voordelta, a shallow coastal zone in front of the Dutch Delta, as well as that of the subtidal channels and the intertidal brackish marsh creeks of the Westerschelde Estuary, was sampled monthly during one year by means of a sledge and a stow net. A total of 37... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community composition; Deltas; Dominant species; Ecological distribution; Estuaries; Intertidal environment; Juveniles; Marine fish; Nursery grounds; Pleuronectes; Population density; Salt marshes; Sprattus sprattus; Wetlands; Zoobenthos; Clupea harengus; Dicentrarchus labrax [Bass]; Solea solea [Sole]. |
| Ano: 1999 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3979 |
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| BRANCO,LUIS HENRIQUE Z.; NECCHI JÚNIOR,ORLANDO; BRANCO,CIRO CESAR Z.. |
| A hundred seventy two stream reaches from six distinct natural regions (parts of biomes or geological areas) in São Paulo State (Atlantic Rainforest, Cerrado, Hard Water regions, Northwest region, Subtropical Rainforest, and Tropical Rainforest) were searched for the most representative macroscopic Cyanophyceae of phytobenthic communities. Selected ecological parameters were analyzed in each stream segment: conductance, current velocity, oxygen saturation, pH, turbidity, and water temperature. Algal abundance was evaluated as percentage cover. Thirthy four cyanophyte taxa were identified and Phormidium retzii was the most widespread species throughout the State, occurring in all studied regions, except in hard water areas, and was negatively correlated to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanophyceae; Ecological distribution; Conductance; Streams; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000100011 |
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| Fransozo, A.; Costa, R.C.; Castilho, A.L.; Mantelatto, F.L.. |
| The spatial and temporal distribution of the shrimp Artemesia longinaris in Fortaleza Bay, northern coast of Sao Paulo State, Brazil, in relation to abiotic factors, was studied. Shrimp samples were obtained on a monthly basis from November 1988 through October 1989 at seven pre-delimited transects on board of a fishing vessel supplied with double otter trawl nets. Depth was recorded at the midpoint of each transect; water and sediment samples were taken to measure salinity, temperature, texture and organic matter content of sediment. The shrimps obtained in the trawls were sorted, identified and 100 g subsample at each transect was separated for measurements (carapace length). A total of 3,083 individuals were obtained. Shrimps were more abundant from... |
| Tipo: Journal Contribution |
Palavras-chave: Abiotic factors; Ecological distribution; Shrimp fisheries; Fishery surveys; Abundance. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1537 |
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| Frontier, S.. |
| Con los diseños de "primera descripción", se trata de estudiar en una región las variaciones de la comunidad planctónica según el tiempo, el espacio, o los dos a la vez. Se estuadiará por ejemplo las variaciones a la escala geográfica, según los principales gradientes ecológicos; norte -sur, costa-alta mar, vertical, etc. Se establecerá transectos a través de los fenómenos, las estaciones siendo más o menos apretadas según la intensidad del gradiente. Si se presume la existencia de varios gradientes ecológicos entrecruzándose, se realizará un cuadriculado de estaciones. Se estudiará por otra parte variaciones verticales, estacionales e interanuales, nictemerales, etc. |
| Tipo: Journal Contribution |
Palavras-chave: Ecological distribution; Plankton surveys; Sampling; Sampling; Http://aims.fao.org/aos/agrovoc/c_6774. |
| Ano: 1980 |
URL: http://hdl.handle.net/1834/2119 |
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| Registros recuperados: 13 | |
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