Methane and Carbon Dioxide Dynamics in the Paraguay River Floodplain (Pantanal) in Episodic Anoxia Events

Pimelodus mysteriosus Azpelicueta 1998, previously known only from the lower Paraná and Paraguay River basins, has been also recorded in the upper Paraná River floodplain. The only congeners occurring in syntopy with P. mysteriosus in the upper Paraná River basin are P. maculatus and P. ornatus. New diagnostic characters between P. mysteriosus and P. maculatus are provided.

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The Lower Paraguay river-floodplain habitats in the context of the Fluvial Hydrosystem Approach

Ecohydrology & Hydrobiology ◽

10.2478/v10104-009-0004-1 ◽

2008 ◽

Vol 8 (1) ◽

pp. 49-66 ◽

Cited By ~ 4

Author(s):

Edmundo C. Drago ◽

Karl M. Wantzen ◽

Aldo R. Paira

Keyword(s):

River Floodplain ◽

Paraguay River ◽

Floodplain Habitats

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Primary Production and Carbon Dioxide Metabolic Balance of a Lake-Rich Arctic River Floodplain: Partitioning of Phytoplankton, Epipelon, Macrophyte, and Epiphyton Production Among Lakes on the Mackenzie Delta

Ecosystems ◽

10.1007/s10021-009-9263-3 ◽

2009 ◽

Vol 12 (5) ◽

pp. 853-872 ◽

Cited By ~ 35

Author(s):

Margaret M. Squires ◽

Lance F. W. Lesack ◽

Robert E. Hecky ◽

Stephanie J. Guildford ◽

Patricia Ramlal ◽

...

Keyword(s):

Carbon Dioxide ◽

Primary Production ◽

Mackenzie Delta ◽

Metabolic Balance ◽

River Floodplain

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Nymphaeaceae, Nymphaea belophylla Trickett: new state record

Check List ◽

10.15560/9.2.440 ◽

2013 ◽

Vol 9 (2) ◽

pp. 440

Author(s):

Gisaine De Andrade Amador ◽

Geraldo Alves Damasceno-Júnior ◽

Rosa Helena da Silva ◽

Arnildo Pott ◽

Vali Joana Pott

Keyword(s):

Species Composition ◽

Species Distribution ◽

First Record ◽

Herbaceous Species ◽

Mato Grosso ◽

River Floodplain ◽

Neotropical Species ◽

Paraguay River ◽

Mato Grosso Do Sul ◽

Pantanal Wetland

We report the first record of Nymphaea belophylla for the Pantanal wetland in the State of Mato Grosso do Sul, Brazil, being the southernmost record of this waterlily. It is one of the seven neotropical species of this genus in the Pantanal. We collected N. belophylla during a study on seasonality of herbaceous species composition in a remote area of the Paraguay river floodplain, what reinforces the importance of floristic surveys to improve knowledge on species distribution.

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Electron Cytochemical Study of Carbon Dioxide Laser Effect on Rhesus Monkey Cornea

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010005113x ◽

1974 ◽

Vol 32 ◽

pp. 224-225

Author(s):

K. C. Tsou ◽

J. Morris ◽

P. Shawaluk ◽

B. Stuck ◽

E. Beatrice

Keyword(s):

Carbon Dioxide ◽

Electron Microscope ◽

Rhesus Monkey ◽

Carbon Dioxide Laser ◽

Cytochemical Study ◽

Laser Effect

While much is known regarding the effect of lasers on the retina, little study has been done on the effect of lasers on cornea, because of the limitation of the size of the material. Using a combination of electron microscope and several newly developed cytochemical methods, the effect of laser can now be studied on eye for the purpose of correlating functional and morphological damage. The present paper illustrates such study with CO2 laser on Rhesus monkey.

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The Critical Point Drying Method Applied to Scanning Electron Microscopy of L-929 Cells

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100068382 ◽

1970 ◽

Vol 28 ◽

pp. 278-279

Author(s):

Charles TurnbiLL ◽

Delbert E. Philpott

Keyword(s):

Electron Microscopy ◽

Carbon Dioxide ◽

Surface Tension ◽

Critical Point ◽

Freeze Drying ◽

Attractive Alternative ◽

Crystal Formation ◽

Critical Point Drying ◽

Time Required ◽

Scanning Electron

The advent of the scanning electron microscope (SCEM) has renewed interest in preparing specimens by avoiding the forces of surface tension. The present method of freeze drying by Boyde and Barger (1969) and Small and Marszalek (1969) does prevent surface tension but ice crystal formation and time required for pumping out the specimen to dryness has discouraged us. We believe an attractive alternative to freeze drying is the critical point method originated by Anderson (1951; for electron microscopy. He avoided surface tension effects during drying by first exchanging the specimen water with alcohol, amy L acetate and then with carbon dioxide. He then selected a specific temperature (36.5°C) and pressure (72 Atm.) at which carbon dioxide would pass from the liquid to the gaseous phase without the effect of surface tension This combination of temperature and, pressure is known as the "critical point" of the Liquid.

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