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| RESENDE, E. K. de; SALIS, S. M. de; ISHII, I. H.; SANTOS, R. A. C. P.; MOURA, H. C. G. de; MONACO, I. de A.; FERREIRA, L. K. S. G.; SILVA, L. W. da. |
| O Pantanal é conhecido pela sua riqueza ictiofaunística e constitui região de pesca visitada por muitos pescadores esportivos. Mas o que faz com que esse tipo de ambiente inundável seja tão rico em peixes? Esse artigo se propõe a responder a essa questão, mostrando que o pulso de inundação, o encher e secar a cada ano, típico de ambientes inundáveis, é o processo ecológico que regula sua fauna e flora, particularmente os peixes. Para tanto foi escolhido um braço abandonado do Rio Paraguai, denominado localmente como Baía do Tuiuiú, onde se estudou o ambiente, em termos de vegetação circundante, as características limnológicas de suas águas e suas relações com os peixes ocorrentes em termos de composição, riqueza, diversidade e suas estratégias de vida. |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Pulso de inundação; Peixe; Inundação; Ecologia aquática; Fish; Floods; Aquatic ecosystems. |
| Ano: 2016 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1053104 |
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| Lolis, Solange de Fátima; Fundação Universidade Federal do Tocantins; Sanches-Marques, Angela Maria Marques; UEM; Arruda Reis, Sebastiana Lindaura; UFMT; Benedito, Evanilde; UEM. |
| The objective of this work was to perform a temporal quantitative analysis, using the scientometric technique, considering the number of citations that the terms Primary Production of Aquatic Macrophytesand Energetic Ecology received in a 50-year period (1956 to 2006). The study related 189 papers published in 26 magazines. It was verified that researchers of several nationalities are working on the proposed themes, with a predominance of those from developed countries (USA and Germany). In Brazil, production on these themes, although small, coincides with the results obtained for other themes analyzed using the same research technique. This fact indicates that greater efforts should be made in the search for more intense scientific production in the... |
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Palavras-chave: 2.00.00.00-6 Ciências Biológicas energy flow; Aquatic macrophytes; Aquatic ecosystems; Primary producers; Scientific production Ecologia. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5139 |
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| ALVES,R.M.A.; ALBUQUERQUE,M.B.; BARBOSA,L.G.. |
| ABSTRACT The species of the Urochloa genus, exotic and infesting in Brazilian waters, are known to be invasive and dominant, occupying from humid, shallow areas, and irrigation canals to margins of deep reservoirs. This paper hypothesis that less depth reservoirs have higher infestation rate and higher biomass of U. arrecta. The objectives were to measure the percentage of occurrence of exotic macrophyte U. arrecta in 40 ecosystems from the Mamanguape basin (Paraíba, Brazil) and determine the infestation of the species in two reservoirs. The acquired data were geo-referenced with the ArcGIS software (v. 9.3). A covariance analysis was performed using the R program (The R project is Statistical Computing). The results showed large spatial distribution of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Urochloa arrecta; Aquatic ecosystems; Spatial scales. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100231 |
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| Schindler, David; University of Alberta; d.schindler@ualberta.ca. |
| Few boreal waters are managed in a sustainable manner, because cumulative effects of a variety of human activities are not considered. Fisheries and water quality have declined in most large water bodies of the southern boreal zone. Some of the reasons are direct, including overexploitation of fisheries, alteration of flow patterns, introductions of non-native species, and discharge of eutrophying nutrients and persistent contaminants. However, improper management of watersheds and airsheds also causes degradation of aquatic ecosystems. Clear-cut logging, climatic warming, acid precipitation, and stratospheric ozone depletion are among the more important of these indirect stressors. There are important interactions among these stressors, requiring that... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Atmospheric stressors; Aquatic ecosystems; Biodiversity of streams and lakes; Boreal ecosystems; Clear-cutting; Cumulative effects; Ecological invasions; Fisheries; Indigenous peoples; Land-water interactions; Sustainable development; Watershed management.. |
| Ano: 1998 |
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