FUNDAMENTOS DE LIMNOLOGA NEOTROPICAL PDF

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Fundamentos de limnología neotropical. by Gabriel Roldán Pérez; John Jairo Ramírez Restrepo. Print book: State or province government publication. Spanish. FUNDAMENTOS DE LIMNOLOGIA NEOTROPICAL 2 EDICION by Gabriel y otro Roldan Perez at – ISBN X – ISBN Fundamentos de Limnología Neotropical – Download as PDF File .pdf), Text File .txt) or read online.

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On the other hand, these authors showed a rapid growth on the number of papers, mainly after the 80’s. Methods The analysis was based on abstracts of papers published between and Limnolga Fish assemblages with Egeria in a tropical reservoir: Commonly, four morphotypes or life forms are used to classify aquatic macrophytes: Almost one third of the papers out of were done by researchers of at least two different countries what indicates international cooperation.

The study of aquatic macrophytes in Neotropics: a scientometrical view of the main trends and gaps

In spite of this, “Hydrobiologia”, which publishes articles in all sub-fields of Limnology with no bias regarding organisms Melo et al. Ecological studies involving aquatic plants substantially increased in the last years.

It is important to note that not only the total number of papers, but also the percentage of papers in relation to the total scientific production concerning aquatic macrophytes in Neotropics indexed in Scopus and ISI increased steeply from to Figure 1. I ; Bini, LM. According to these authors, the variation in hydrological levels, high turbidity and flow velocity of Brazilian lotic ecosystems limit the development of macrophytes in river main channels, what is a probable cause for the small number of studies in these ecosystems.

A total of papers were analyzed, considering the criteria delineated in our Methods. Hence, our results showed the paucity of studies on macrophyte biodiversity, essential to support conservation efforts and to subsidize further investigations testing ecological hypotheses. Also, submerged, together with free-floating aquatic plants, are targets of interest in impacted habitats such as reservoirs, since they can cause serious troubles for energetic production and water use e.

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This suggests that international cooperation of Neotropical countries among themselves is still not conspicuous and should be stimulated.

Rolon and Maltchik, ; Padial and Thomaz, In fact, when growing in suitable habitats several species are considered aquatic weeds due to massive colonization and negative effects upon aquatic diversity and ecosystem functioning Camargo et al. Neiff, ; Junk, ; Esteves, The high attention of this subject reflects the recognition that macrophytes cause strong changes in aquatic ecosystems e.

However, Warming also described the aquatic and amphibian vegetation of this lagoon in details, making the first inferences about aquatic plant zonation and succession. Finally, problems caused by the excessive growth of aquatic vegetation, especially in reservoirs can also be another factor accounting for this trend Thomaz and Bini, In fact, high scientific production is associated with economic development May, This observation is shocking in Neotropical regions, since this region contain seven hotspots global priority conservation areas out of the 25 postulated by Myers et al.

Aquatic Botany was the second journal in number of papers concerning aquatic macrophytes in Neotropics Figure 4.

Measuring progress and evolution in science and technology. Environmental factors as predictors of aquatic macrophyte richness and composition in wetlands of southern Brazil.

Fundamentos de limnología neotropical

Henry-Silva and Camargo, In fact, Esteves stressed the high abundance of floodplain shallow lagoons in Neotropics, compared to deep lakes, mostly found in temperate regions. The total number of papers increased conspicuously in the last two decades 11 in to 52 in Accordingly, experiments that complement surveys on the knowledge construction, in any spatial scale, are still rarely carried Experiment in microscale: Ecological studies involving aquatic plants substantially increased just after the 60’s, following the increase of studies in shallow ecosystems, globally more numerous in comparison to deep aquatic environments Esteves ; Wetzel, ; Thomaz and Bini, This is essential to support conservation efforts and to subsidize further investigations testing ecological hypotheses.

This indicates the concern of the researches in identifying the main variables affecting aquatic plant growth, decomposition and community structure e.

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The scientific production per year was also recorded to calculate the percentage of papers concerning macrophytes in Neotropics in relation to total number of papers.

The studies conducted in neotropicsl are probably related to the problems that aquatic macrophytes cause due to excessive growth. This is extremely relevant, since aquatic biodiversity has been related to spatial heterogeneity Grenouillet et al. Studies with a predictive approach fundamentow aiming to test ecological hypothesis are scarce. In fact, as mentioned earlier, Chambers et al.

The systematic, distribution, phytogeography and ecology of the terrestrial vegetation surrounding Santa Lagoon were the main issues of this book.

The structuring role of submerged macrophytes in lakes.

Fundamentos de limnología neotropical

The scientometrics research can be considered the area of research that utilizes information contained in publications to obtain a scientific output of its trends and lacks Verbeek et al. Together with these investigations, basic researches aiming to describe unknown limnolkga are also necessary. The title, abstract, author addresses, publication years and publication journals were recorded for our analyses.

How to cite this article.

Thus, an evaluation of publications of the whole Neotropics is still necessary. Emergent aquatic macrophytes are also highly studied, possibly due to the importance of this plants that may have extremely high primary production Piedade et al. Among other implications, aquatic macrophytes are known as highly productive Wetzel, and with an important structuring role on aquatic environments Jeppensen lijnologa al.

In addition, USA is located in the same continent, what probably facilitates the cooperation with Neotropical countries. These studies are essential nowadays, since they can support conservation efforts. Additionally, these papers were also related to studies concerning the management and control of macrophytes.

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