Hydrologic cycle and dynamics of aquatic macrophytes in two intermittent rivers of the semi-arid region of Brazil

Pedro, Fabio; Maltchik, Leonardo; Bianchini, Irineu

doi:10.1590/s1519-69842006000400002

Cited by 25 publications

(18 citation statements)

References 27 publications

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“…Other researchers, however, have reported lower diversity levels than those encountered in the present study: Reis & Barbosa (1993) encountered only 14 aquatic macrophytes species in Mares Lake in the municipality of Lagoa Santa (MG); Bini et al (2005) identifi ed 16 taxa in the Cachoeira Dourada reservoir (GO/MG); while Pedro et al (2006) reported the occurrence of only nine species while examining the dynamics of macrophyte occupation of reservoirs in the semiarid region of Bahia State.…”

Section: Discussioncontrasting

confidence: 67%

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Floristic surveys of aquatic macrophytes in reservoirs in the Agreste zone of Pernambuco State, Brazil

Xavier¹,

Araújo²,

Nascimento³

et al. 2012

Braz. J. Bot.

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-(Floristic surveys of aquatic macrophytes in reservoirs in the Agreste zone of Pernambuco State, Brazil). We surveyed the aquatic macrophytes in reservoirs in Camocim de São Félix in the Agreste zone of Pernambuco State, Brazil. Plants were collected on a bimonthly schedule from November/2008 to May/2009 in four reservoirs, and 33 taxa distributed among 23 families were encountered. The family Cyperaceae had the greatest number of species, followed by Lemnaceae. The predominant biologic form was emergent (33.3%) refl ecting the extensive shorelines around the reservoirs analyzed.

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Section: Discussioncontrasting

confidence: 67%

“…Research efforts already undertaken in northeastern Brazil include: Barbieri & Pinto (1999) in Maranhão State; Matias & Nunes (2001) and Matias et al (2003) in Ceará State; França et al (2003) in Bahia State; and Pedro et al (2006) in Paraíba State.…”

Section: Introductionmentioning

confidence: 99%

Floristic surveys of aquatic macrophytes in reservoirs in the Agreste zone of Pernambuco State, Brazil

Xavier¹,

Araújo²,

Nascimento³

et al. 2012

Braz. J. Bot.

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“…Pedro et al (2006) analyzed the hydrological cycle and the dynamics of macrophytes in intermittent rivers of the semi-arid region of Paraíba (northeastern Brazil) and found that the occurrence of seasonality (dry and rainy season) is a determining factor that is related to the strength and resilience of these plants. Comparing the number of species in urban and non-urban areas of the Cuyahoga River (Ohio, USA), Balanson et al (2005) observed that there was no apparent correlation between the nutrient content of the streams and the degree of impact on macrophyte communities.…”

Section: Discussionmentioning

confidence: 99%

Urbanization effects on the composition and structure of macrophytes communities in a lotic ecosystem of Pernambuco State, Brazil

et al. 2016

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Population growth in urban areas changes freshwater ecosystems, and this can have consequences for macrophyte communities as can be seen in the municipalities that border the Capibaribe River, Pernambuco, Brazil. This study reports the effects of urbanization on the composition and structure of macrophyte communities in areas along that river. The following urbanized and non-urbanized sampling sites were chosen: Sites 1 and 2 (municipality of Santa Cruz do Capibaribe), Sites 3 and 4 (municipality of Toritama), and Sites 5 and 6 (metropolitan region of Recife). These sites were visited every two months from January to July 2013 to observe seasonal variation (wet and dry seasons). Thirty-one species were identified. Generally, the non-urbanized sites had a higher number of species. Multivariate analyses indicated significant overall differences between urbanized and non-urbanized areas (R = 0.044; p < 0.001) and between seasons (R = 0.018; p < 0.019). Owing to the large variation in physical, chemical, and biological characteristics between urbanized and non-urbanized areas, we found that urbanization significantly influenced the floristic composition and structure of macrophyte communities. (janeiro -julho/2013), para a observação da variação sazonal (estações seca e chuvosa). Foram identificadas 31 espécies. Geralmente, os pontos das áreas não urbanizadas apresentaram um número maior de espécies. As análises multivariadas indicaram diferenças globais significativas entre áreas urbanizadas e não urbanizadas (R = 0,044, p < 0,001) e também entre as estações (R = 0,018; p < 0,019). Devido à grande variação física, química e biológica entre as áreas urbanizadas e não urbanizadas, observou-se que o fator urbanização influenciou significativamente na composição florística e na estrutura das comunidades de macrófitas. KeywordsPalavras-chave: plantas aquáticas, biomassa, poluição.

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“…Studies on aquatic ecosystems of the Brazilian semi-arid region have evidenced the high biodiversity of these environments, including aquatic macrophytes, and have demonstrated that patterns of diversity are related to the hydrological extremes of flood and drought (Medeiros and Maltchik, 1999;Silva-Filho and Maltchik, 2000;Medeiros and Maltchik, 2001;Pedro et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Richness and distribution of aquatic macrophytes in Brazilian semi-arid aquatic ecosystems

Henry-Silva¹,

Moura²,

Dantas³

2010

Acta Limnol. Bras. (Online)

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Aim: The aim of this study was to evaluate the richness and distribution of the aquatic macrophytes in the basin of the Apodi/Mossoró River, in the semi-arid region (caatinga) of Rio Grande do Norte, Brazil; Methods: A survey of the floristic composition of the aquatic macrophytes was made at 20 sampling stations in the basin at four seasons (August/2007, November/2007, February/2008, May/2008. Specimens of each species were collected and deposited in the Dárdano de Andrade Lima Herbarium of the Universidade Federal Rural do Semi-Árido; Results: We found 40 species of aquatic macrophytes, in 33 genera and 22 families. The families with the most species were Poaceae and Cyperaceae, and the most species-rich genera were Cyperus and Eleocharis. The most common plant form was amphibian (42.5%), followed by emergent (27.5%), free-floating (12.5%), rooted-submersed (10.0%), and floating-leaved (7.5%). The lowest richness was observed at the estuarine region (3 species), and the highest richness in the upper basin (17 species). The rooted-submersed Hydrothrix gardneri Hooker f. and Ceratophyllum demersum L. were observed in great abundance and frequency in the Santa Cruz Reservoir of Apodi, especially in areas close to cage farms of Nile tilapia (Oreochromis niloticus) (Linnaeus, 1758). The most common free-floating species were Eichhornia crassipes (Mart.) Solms., Pistia stratiotes L., and Salvinia auriculata Aubl., predominantly in stretches that run through urban centers; Conclusion: The species richness of aquatic macrophytes in aquatic environments of the caatinga is similar to that observed in other basins of Brazil. Because of the many dams and reservoirs in the semi-arid Northeast, inventory and monitoring of aquatic macrophytes have become essential, especially in basins that will receive water from the diversion of the São Francisco River.Keywords: aquatic plants, floristic inventory, basin, water diversion, caatinga.Resumo: Objetivo: Nós objetivamos avaliar a riqueza e a distribuição das macrófitas aquáticas nos ambientes aquáticos da bacia hidrográfica do Rio Apodi/Mossoró, no semi-árido do Rio Grande do Norte; Métodos: A investigação da composição florística das macrófitas aquáticas presentes em 20 estações de amostragem da bacia hidrográfica, em quatro épocas do ano (Agosto/2007, Novembro/2007, Fevereiro/2008, Maio/2008. As espécies foram coletadas e depositadas no herbário Dárdano de Andrade Lima da Universidade Federal Rural do Semi-Árido; Resultados: Foram identificadas 40 espécies de macrófitas aquáticas distribuídas em 33 gêneros e 22 famílias. As famílias com o maior número de espécies foram Poaceae e Cyperaceae e os gêneros mais representativos foram Cyperus e Eleocharis. A forma biológica mais freqüente foi a anfíbia (42,5%), seguida pelas emergentes (27,5%); folhas flutuantes (12,5%); submersas enraizadas (10,0%) e com folhas flutuantes (7,5%). A menor riqueza foi observada na região estuarina (três espécies), e a maior riqueza na parte alta da bacia hidrográfica (dezessete espécies). A...

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Hydrologic cycle and dynamics of aquatic macrophytes in two intermittent rivers of the semi-arid region of Brazil

Cited by 25 publications

References 27 publications

Floristic surveys of aquatic macrophytes in reservoirs in the Agreste zone of Pernambuco State, Brazil

Floristic surveys of aquatic macrophytes in reservoirs in the Agreste zone of Pernambuco State, Brazil

Urbanization effects on the composition and structure of macrophytes communities in a lotic ecosystem of Pernambuco State, Brazil

Richness and distribution of aquatic macrophytes in Brazilian semi-arid aquatic ecosystems

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