Pattern in Wetlands

Goldsborough, L. Gordon; Robinson, G. G. C.

doi:10.1016/b978-012668450-6/50033-3

Cited by 108 publications

(100 citation statements)

References 116 publications

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“…Como enfatizado por Goldsborough & Robinson (1996), em ambientes rasos, como em áreas alagadas de modo geral, é difícil estabelecer limites de hábitat para as populações algais, uma vez que há grande interação entre os distintos compartimentos do sistema. Essa interação é influenciada principalmente pela hidrologia, estabilidade da coluna da água, disponibilidade de superfícies colonizáveis, entre outros fatores.…”

Section: Discussionunclassified

“…Apesar da grande abundância de áreas alagáveis em escala mundial, Goldsborough & Robinson (1996) consideram que a pesquisa ficológica tem se concentrado em outros sistemas como rios e lagos, de forma que informações sobre as comunidades algais nos ambientes alagáveis são, de modo geral, bastante fragmentadas, particularmente para as áreas tropicais e subárticas.…”

Section: Introductionunclassified

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Gradiente litorâneo-limnético do fitoplâncton e ficoperifíton em uma lagoa da planície de inundação do Rio Mogi-Guaçu

2005

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-(Phytoplankton and phycoperiphyton littoral-limnetic gradient of in an oxbow lake of Mogi-Guaçu River floodplain). Study aimed at evaluating the phytoplankton and phycoperiphyton structure and dynamics during a hydrological cycle at the littoral-limnetic gradient in the Diogo Pond, and oxbow lake of the Mogi-Guaçu river floodplain (São Paulo State, Brazil). Samplings were carried out during one hydrological cycle (high water, flooding, low water, and drought) in three sites (open water, littoral-limnetic interface, and within the macrophyte stand) for phytoplankton, and in the littoral region for phycoperiphyton associated to Eicchornia azurea Kunth. Algal classes densities and biomass (chlorophyll-a) were analyzed for both communities. Principal component analysis separated the two major hydrological periods: the rainy and the dry seasons. Rainy season was associated to higher temperatures, higher water levels, lower nitrate, and higher densities of Euglenophyceae, Cryptophyceae, Chrysophyceae, and chlorophyll-a concentrations. Disturbance regime during high water and flood periods favoured opportunistic groups represented by phytoflagellates. Moreover, phytoplankton from littoral region was separated during high water, low water and drought phases indicating the influence of the spatial gradient. Periphyton showed a distinct trend, with higher biomass and densities during low water and drought phases. Hydrological cycle was considered the main driving force on the phytoplankton and periphyton structure as well as on the interaction and interchanges of these communities in the oxbow pond.Key words -floodplain, litoral-limnetic gradient, oxbow lake, periphyton, phytoplankton RESUMO -(Gradiente litorâneo-limnético do fitoplâncton e ficoperifíton em uma lagoa da planície de inundação do Rio MogiGuaçu). O estudo visou analisar a estrutura e dinâmica do fitoplâncton e ficoperifíton durante um ciclo hidrológico no gradiente litorâneo-limnético na Lagoa do Diogo, uma lagoa marginal da planície de inundação do Rio Mogi-Guaçu (Estado de São Paulo). Foram realizadas quatro coletas durante o ciclo hidrológico (enchente, cheia, vazante e seca) em três locais (água aberta, interface limnético-litorânea e dentro do banco de macrófitas aquáticas) para o fitoplâncton e na região litoral para o perifíton associado a Eichhornia azurea Kunth. Biomassa (clorofila-a) e densidade das classes de algas foram analisadas para ambas comunidades. Análise de componentes principais separou as duas maiores fases hidrológicas: chuvosa e seca. A primeira foi associada às maiores temperaturas, nível de água, menores valores de nitrato e às maiores densidades de Euglenophyceae, Cryptophyceae e Chrysophyceae e aos maiores teores de clorofila-a. O maior regime de perturbações nas épocas de enchente e cheia favoreceu grupos oportunistas, representados pelos fitoflagelados. Houve, ainda, a separação do fitoplâncton da região litoral nas épocas de cheia, vazante e seca, indicando a influência do gradiente espacial do sistema. A comunidade p...

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Section: Discussionunclassified

Section: Introductionunclassified

Gradiente litorâneo-limnético do fitoplâncton e ficoperifíton em uma lagoa da planície de inundação do Rio Mogi-Guaçu

2005

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“…No trends towards phytoplankton proliferation or density increase were observed under VectoBac 1 spraying over a long term. The differences in phytoplankton densities observed can be explained by the inter-annual variability present in coastal wetlands (Goldsborough and Robinson, 1996;Goldsborough, 2001) and can be attributed to shifts in phytoplankton community dynamics. High variability in physico-chemical parameters and hydrological conditions, including temperature, salinity, water depth, inputs of water, drought and seasonality, influenced phytoplankton colonization in these wetlands.…”

Section: Discussionmentioning

confidence: 99%

“…Phytoplanktonic algae make a significant contribution to primary production and nutrient cycling in wetlands (Goldsborough and Robinson, 1996;Robinson et al, 1997;Wu and Mitsch, 1998;Weilhoefer and Pan, 2007;Hagen, 2009). Phytoplankton cells are also a significant dietary resource for larvae of many species mosquito that feed opportunistically on microorganisms (i.e., bacteria, fungal, protozoa, algae) (Merritt et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Corrigendum: Does mosquito control by Bti spraying affect the phytoplankton community? A 5-year study in Camargue temporary wetlands (France)

Fayolle

Bertrand

Logez

et al. 2016

Ann. Limnol. - Int. J. Lim.

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This article is a corrigendum of a former version by Fayolle et al., originally published in Ann. Limnol. -Int. J. Lim. 51: 189-198, 2015. In its original form, the article contained portions of text that were identical to Duguma et al., J. Appl. Ecol. 52: 763-773, 2015, similarities that were not detected by our plagiarism detection software upon initial submission of Fayolle et al.'s manuscript. Based on independent investigations, the Editors of Ann. Limnol. Where Ann. Limnol. -Int. J. Lim. is concerned, plagiarism check remains a common practice at the time of first submission, but we will now systematically check revised manuscripts as well. Last, we wish to thank the authors of both articles as well as the Editor of J. Appl. Ecol. for helping us sorting out a very difficult situation. The EditorsAbstract -Mosquitoes are both vectors of disease and a hindrance to outdoor activities. Since its discovery in 1976, the larvicide Bacillus thuringiensis var. israelensis (Bti) has proven its effectiveness in controlling mosquito populations, with negligible environmental impact. We performed an integrated, 5-year study of the direct and indirect effects of Bacillus thuringiensis var. israelensis (Bti applied as VectoBac 1 WG) on phytoplankton communities in the Camargue temporary wetlands of the French Mediterranean coast. Mosquito larvae are considered major algae predators, so a significant reduction in mosquito larval density ( > 80%) in natural wetlands due to Bti treatment could indirectly affect phytoplankton communities. Physical parameters and phytoplankton were sampled in the water of three temporary oligohaline pools between 2006 and 2011 in the following order: T0 = 1 day before treatment (control), T2 = 2 days after treatment, T5 = 5 days after treatment, T11 = 11 days after treatment. We found no negative effects of Bti treatments on total phytoplankton density and community diversity (Shannon's entropy and Pielou's evenness). However, we observed changes in the density of some taxonomic groups; Diatoms were replaced by drought-resistant algae typical of temporary wetlands. These results suggest that changes in phytoplankton community structure are largely driven by natural environmental factors and by the ecological complexity of these temporary wetlands.

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“…Given the ecological importance of periphyton in shallow freshwater systems (e.g., Bott 1996, Goldsborough and Robinson 1996, Wetzel 1996 and the inherent susceptibility of shallow periphyton to UV exposure, we conducted a study to examine the effects of UV radiation on wetland periphyton communities. Specifically, we examined the effects of long-term (42 day) full sunlight exposure (+UV) versus UV exclusion (-UV) on periphyton communities growing in situ on artificial substrata with regard to 1) algal biomass and community composition, 2) bacterial density and viability.…”

Section: Introductionmentioning

confidence: 99%

Effects of UV Radiation on Wetland Periphyton: Algae, Bacteria, and Extracellular Polysaccharides

Thomas¹,

Kuehn²,

Francoeur³

2009

Journal of Freshwater Ecology

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To study the effects of UV radiation on wetland periphyton, glass substrata were placed under acrylic mesocosms in a small freshwater marsh in Michigan, USA. One treatment excluded light in the UV range (<400nm), and another allowed the passage of all light. Substrata were sampled on four dates during August and September 2004. Chlorophyll a, algal community composition, ash-free dry mass, bacterial density and viability, and total extracellular polysaccharide (EPS) content were measured. Algal biomass, algal community composition, bacterial abundance, and ash-free dry mass were relatively insensitive to UV treatment; however, the proportion of non-viable bacteria (p = 0.006) and area-specific EPS content (p = 0.025) were significantly greater in the UVexposed treatment. These results suggest that ambient levels of UV can damage periphytic bacteria and may cause corresponding functional changes within naturally occurring periphytic communities.

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Pattern in Wetlands

Cited by 108 publications

References 116 publications

Gradiente litorâneo-limnético do fitoplâncton e ficoperifíton em uma lagoa da planície de inundação do Rio Mogi-Guaçu

Gradiente litorâneo-limnético do fitoplâncton e ficoperifíton em uma lagoa da planície de inundação do Rio Mogi-Guaçu

Corrigendum: Does mosquito control by Bti spraying affect the phytoplankton community? A 5-year study in Camargue temporary wetlands (France)

Effects of UV Radiation on Wetland Periphyton: Algae, Bacteria, and Extracellular Polysaccharides

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