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

Henry-Silva, Gustavo Gonzaga; Moura, Rodrigo Sávio Teixeira de; Dantas, Luciana Lúcia de Oliveira

doi:10.1590/s2179-975x2010000200004

Cited by 29 publications

(24 citation statements)

References 10 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The representativeness of families occurring in a study area can also be impaired by urbanization. Poaceae had good representation in our study, as it did in the study of Carvalho et al (2005), which evaluated the level of macrophyte infestation on the Tiete River and recorded five species (33.3% of the total), and also in the study of Henry-Silva et al (2010), which identified five species (11.36% of the total) of this family in river ecosystems of the Brazilian semi-arid region.…”

Section: Discussionsupporting

confidence: 63%

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

et al. 2016

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 63%

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

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The other works that include species of Cyperus occurring in the state are only lists (Almeida Júnior & Zickel 2009;Henry-Silva et al 2010;Oliveira et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The genus Cyperus (Cyperaceae) in Rio Grande do Norte State, Brazil

et al. 2015

View full text Add to dashboard Cite

Cyperus is a Pantropical genus and the second richest in species in Cyperaceae. It encompasses about 550 species worldwide, with about 100 of these occurring in Brazil. Studies on the taxonomy of this genus are scarce and punctual in Brazil. In this study, the occurrence of species was surveyed through 27 collecting expeditions across different regions in the state of Rio Grande do Norte and analyzis of specimens of several herbaria. Twenty four species of Cyperus were identified, including six new occurrences and one new species, here described, but that will be properly published in other work. This study includes a dichotomous key for the identification of the species, as well as illustrations, descriptions, taxonomic comments and geographical distribution.

show abstract

“…All aquatic macrophytes recorded in Ourinhos Reservoir are common in Neotropical reservoirs and lakes (Vilarrubia and Cova, 1993;Bini et al, 1999Bini et al, , 2005Neiff, 2001;Nahlik and Mitsch, 2006;Neiff et al, 2008;Martins et al, 2008;Bianchini Junior et al, 2010;Henry-Silva et al, 2010;Piedade et al, 2010;Rolon et al, 2010;Alves Ferreira et al, 2011). In the Paranapanema watershed, these species were also usually recorded in the following reservoirs: Rosana, Salto Grande, Chavantes, Piraju and Jurumirim (Henry and Nogueira, 1999;Casatti et al, 2003;Martins et al, 2008;Neves, 2008;Bianchini Junior and Cunha-Santino, 2014).…”

Section: Discussionmentioning

confidence: 99%

Morphometry and retention time as forcing functions to establishment and maintenance of aquatic macrophytes in a tropical reservoir

2016

View full text Add to dashboard Cite

Macrophytes may constitute an important resource for several chemical, physical and biological processes within aquatic ecosystems. This study considers that in tropical reservoirs with low retention time and with low values of shoreline development (D L ), the expansion and persistence of aquatic macrophytes are mainly reported to local conditions (e.g., hydrodynamic and wind exposure) rather than trophic status and depth of the euphotic zone. In this context, this study aimed at describing and comparing the incidence of aquatic macrophytes in a throughflowing, non-dendritic tropical reservoir. During February 2006 to November 2007, eight limnological surveys were performed quarterly within the Ourinhos Reservoir, and in the mouth areas of its tributaries. At the six sampling stations 30 variables were measured. The number of sites with plants varied between 21 and 38 and at the end of the 1 st year the total richness was found. The sampling survey outcome the recognition of 18 species of aquatic macrophytes; Cyperaceae (2 genera and 1 species), Pontederiaceae (3 species) and Onarograceae (3 genera) were the families with higher diversity. Seven species (Typha domingensis Pers., Myriophyllum aquaticum (Vell.) Verdec, Salvinia auriculata Aubl., Eichhornia azurea (Sw.) Kunth, Eleocharis sp1, Eichhornia crassipes (Mart.) Solms, Oxycaryum cubense (Poepp. & Kunth) Lye) always were present and were more frequent in the sites. The occurrence of emergent species predominated (45.9%), followed by submersed rooted (24.5%), free floating (19.5%), floating rooted (9.7%) and free submersed (0.3%). Although limnological variables and the distribution of macrophytes have discriminated the same sampling points, the stepwise multiple linear regressions did not pointed out strong correspondences (or coherence) among the most constant and distributed macrophyte species and the selected limnological variables, as well the trophic statuses. Seeing the low relationship among limnological variables and macrophytes distribution, in the case of Ourinhos Reservoir, the results pointed out that the water turbulence, low D L and wind exposure are the main driving forces that determine its aquatic plant distribution, life forms and species composition.Keywords: aquatic plants, biodiversity, population dynamic, drive functions, limnological constrains, Paranapanema River, Ourinhos HPP. Morfometria e tempo de residência como fatores determinantes noestabelecimento e manutenção de macrófitas aquáticas em um reservatório tropical ResumoAs macrófitas podem constituir um recurso importante para vários processos físicos, químicos e biológicos dos ecossistemas aquáticos. Esse estudo considera que nos reservatórios tropicais com baixo tempo de retenção e com baixos valores do grau de desenvolvimento das margens (D L ), a expansão e manutenção das macrófitas aquáticas são referidas principalmente às condições locais (e.g., hidrodinâmica e exposição ao vento), ao invés do estado trófico e da profundidade de zona eufótica. Nesse contexto, o pr...

show abstract

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

Cited by 29 publications

References 10 publications

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

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

The genus Cyperus (Cyperaceae) in Rio Grande do Norte State, Brazil

Morphometry and retention time as forcing functions to establishment and maintenance of aquatic macrophytes in a tropical reservoir

Contact Info

Product

Resources

About