FUNDAMENTOS DE LIMNOLOGA NEOTROPICAL PDF

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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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. Biological neotropicap of water hyacinth in Sinaloa, Mexico with the weevils Neochetina eichhorniae and N.

On the other hand, studies at community level frequently aim to evaluated patterns in the distribution of the abundance and in the diversity of plant communities, as well as the environmental variables affecting these metrics e. In the current study, we performed a scientometrics analysis of the scientific production devoted to Neotropical macrophytes in an attempt to find the main trends and gaps of researches concerning this group.

These authors argue that the best way to circumvent both Wallacean and Linnean pitfalls is to invest in biodiversity inventories, but due to increasing threats, the use of biodiversity surrogates could be a way to select priority areas for conservation when data on species distributions are lacking.

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, The biology of aquatic vascular plants.

Fundamentos de limnología neotropical

The great variety of journals suggests that aquatic plants have been studied for several purposes beyond biology or ecology. In fact, high scientific production is associated with economic development May, Largemouth diet in two aquatic plant communities. According to van Raana scientometric or bibliometric research of a particular study field is devoted to quantify this subject. This suggests that international cooperation of Neotropical countries among themselves is still not conspicuous and should be stimulated.

The studies conducted in reservoirs are probably related to the problems that aquatic macrophytes cause due to excessive growth. Ilmnologa high attention of this subject reflects the recognition that macrophytes cause strong changes in aquatic ecosystems e. Thus, an evaluation of publications of the whole Neotropics is still necessary.

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In spite of this, “Hydrobiologia”, which publishes articles in all sub-fields of Limnology with no bias regarding organisms Melo et al. Therefore, scientometrics considering publications about aquatic macrophytes in Neotropical ecosystems are essential to the progress of this relevant research field.

In addition, the cooperation among Neotropical countries is still scarce. In fact, biodiversity inventories a basic research and the use of biodiversity surrogates an approach to predict biological diversity are the best ways to select priority areas for conservation Bini et al. Rolon and Maltchik, ; Padial and Thomaz, 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.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The low number of articles using modeling techniques and articles of review Figure 8 highlights the primitivism of the investigations carried with this community, since these approaches need basic researches to be applied.

Accordingly, the knowledge of biodiversity is inadequate and plagued by Linnean i. The test of these hypotheses could be done by experiments could be then reached by experiments. Effects of flooding regime upon the decomposition of Eichhornia azurea Sw. However, these authors also affirm that there are unknown species to be described, mainly in tropical areas, impairing estimations of species richness and geographic distribution. Fujdamentos Danish book “Lagoa Santa. However, a precise view of ecological studies using aquatic macrophytes is necessary to reach a reliable evaluation of the scientific production.

Neotropcal indicates the concern of the researches in identifying the main variables affecting aquatic plant growth, decomposition and community structure lumnologa. In addition, USA is located in the same continent, what probably facilitates the cooperation with Neotropical countries.

Although these approaches are adequate for macrophytes, they usually lack a deeper conceptual framework necessary to be included in “hot” areas of Ecology.

The total number of papers increased conspicuously in the last two decades 11 in to 52 in Furthermore, in a study evaluating the scientific impact of nations, Brazil was the only Neotropical country among the 31 neottopical important countries worldwide, occupying the 20 th position in number of published papers King, Moreover, this appraisal could subsidize biodiversity conservancy efforts, since macrophytes are key for conservation of several aquatic e.

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Fundamentos de limnología neotropical

Introduction The Danish book “Lagoa Santa. This highlights especially the recognition of the role of aquatic plants as key components for the biodiversity of aquatic ecosystems Jeppensen et al. These studies are essential nowadays, since they can support conservation efforts. In fact, Wetzel argued that the aquatic macrophyte community can be considered one of the most productive communities in the world. This is extremely relevant, since aquatic biodiversity has been related to spatial heterogeneity Grenouillet et al.

Thomaz and Bini stressed that the variety of environments is also an important factor accounting for the interest on aquatic macrophytes in Brazil. Commonly, four morphotypes or life forms are used to classify aquatic macrophytes: Henry-Silva and Camargo, This is strikingly, since taxonomy is a central issue for ecological and conservational researches Brandon et al.

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

Further information to address our questions were taken from abstracts: Prediction and aquatic sciences. 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, Funcamentos aquatic plant community or macrophytes comprises a diverse group of macrophytic organisms including angiosperms, ferns, mosses, liverworts and some freshwater macroalgae that occur in seasonally or permanently wet environments Lacoul and Freedman, ; Chambers et al.

Thus, ecological studies carried in aquatic environments must consider the aquatic macrophyte community as an essential component for ecosystem fundamenfos and aquatic biodiversity conservation. I ; Bini, LM. The scientific impact of nations. These results indicate that studies with macrophytes are not biased toward more dr or rare ecosystems, but they are rather carried in the most common type of ecosystem.