Características Físicas, Químicas y Fitoplancton de Ríos y Embalses de la Alta Cuenca del Río Juramento (Salta, Argentina)

Salusso, María Mónica; Moraña, Liliana Beatriz

doi:10.14409/natura.v1i31.3754

Cited by 5 publications

(11 citation statements)

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“…Para Bittencourt- Oliveira (2002), corpos d'água marginais, que suprem o ecossistema lótico em função do regime hidrológico, podem ser responsáveis pela origem de muitas espécies encontradas no plâncton de rios. As classes Chlorophyceae e/ou Bacillariophyceae, que predominaram em número de táxons na foz dos rios do delta do Jacuí, também o foram na composição de diversos rios de regiões temperadas como os rios Sacramento (Greenberg 1964), Nilo (Talling & Rzóska 1967), Thames (Lack 1971), Mississipi (Baker & Baker 1979), St. Lawrence (Hudon et al 1996), Mamoré (Gutiérrez & Cadima 2004); subtropicais, rio Tibagi (Bittencourt-Oliveira 1997), rio Baía (Train & Rodrigues 1998), rio Paraná (Schiaffino 1977;Train & Rodrigues 1997;Train et al 2000), rio do Prata (Goméz & Bauer 2000), rio Juramento (Salusso & Moraña 2000), rio Pirapó (Borges et al 2003) e tropicais, rio Orinoco (Lewis 1988), rio Parnaíba (Câmara et al 2002), rio Bonny (Chindah & Braide 2004).…”

Section: Discussionunclassified

Composição e variação sazonal da riqueza do fitoplâncton na foz de rios do delta do Jacuí, RS, Brasil

2007

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Este estudo teve como objetivo descrever e comparar a composição e riqueza do fitoplâncton na foz dos rios Gravataí, Sinos, Caí e Jacuí, durante as quatro estações do ano. A investigação baseou-se em amostragens realizadas bimestralmente na subsuperfície da água, no período de dezembro/2000 a dezembro/2001. A comunidade fitoplanctônica, na foz dos quatro rios, esteve composta por 470 espécies (incluindo as não determinadas), 135 gêneros e nove classes taxonômicas. Chlorophyceae e Bacillariophyceae foram as classes mais representativas em número de espécies. A alta riqueza está, provavelmente, associada à ocorrência de reservatórios e banhados no curso superior destes rios e à presença de áreas úmidas na planície de inundação do delta do Jacuí. A temperatura e o nível fluviométrico foram os principais fatores determinantes da variação sazonal da composição e riqueza da comunidade fitoplanctônica.

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Section: Discussionunclassified

Composição e variação sazonal da riqueza do fitoplâncton na foz de rios do delta do Jacuí, RS, Brasil

2007

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“…Shannon Diversity Index (H') decreased as the perturbation increased [49]. According to the study by there are 3 classes of pollution status based on H′.…”

Section: Diversity Of Benthic Macroinvertebratesmentioning

confidence: 97%

Ecological Conditions and Benthic Macroinvertebrates of Lake Tinishu Ababya, Ethiopia

Enawgaw

2019

OFOAJ

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The ecological condition of Lake Tinishu Abaya was assessed using benthic macroinvertebrates as well. The results from this aspect of the study showed that a total of 5735 benthic macroinvertebrate specimens comprising of 23 taxa were collected from all the study sites. There was spatial effect on the number and distribution of benthic individuals (p <0.05). It was high at Dacha riverside (n=2089) followed by Bobodo riverside (n=1145), Reference site (n= 963), Badober riverside (n= 859), and Maingate side (n=679). The abundance of benthic communities significantly varied between the study seasons (p<0.05). Higher individuals were observed during the wet season (n=3583) than in the dry season (n=2152). The Hemiptera family were the predominant macroinvertebrates that contributed the largest number (n=2546) of the total samples followed by Diptera (n=878), Coleoptera (n=835, 14.56%) and Gastropoda (n=631). The Ephemeroptera (n=172), Hirudinae (n=335) and Oligochates (n=116) were represented by low number of animals. The majority (about 70%) of the benthic communities of Lake Tinishu Abaya are composed of pollution tolerant species as compared to the presence of pollution sensitive ones (<30%) in most of the sampling sites. This indicated that the existence of organic pollution and thus Lake Tinishu Abaya is undergoing environmental stresses. This obviously calls for participatory and interdisciplinary actions of watershed management and wise use of aquatic resources with compliance to commonly set agenda of sustainable use of natural resources.

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“…As for the hydrological cycle, intense rainfall during floods (summer and fall) decreased phytoplankton biomass, which is typical in Brazilian reservoirs (Tundisi & Matsumura-Tundisi, 2008) as well as increased diversity in rainy seasons and decreased diversity in dry seasons (Souza, 2014). The hydrometric level decreased due to the continued use of water in the reservoirs during the August-December period, with the subsequent elevation of pH, alkalinity, salt and nutrient concentration values during the dry season (Salusso & Moraña, 2000), which also affected other tropical water bodies (Barbosa-Chaves, Freitas-Lima, Carrhá-Leitao, Paulino, & Santaella, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Although previous isolated studies have been conducted on the reservoirs dating back more than ten years (Tracanna et al, 1991;Tracanna, Seeligman, & Mirande, 1996;Tracanna et al, 1999, 2006, Tracanna, Martínez De Marco, Taboada, Mirande, & Isasmendi, 2014a, Tracanna, Seeligmann, Mirande, Martínez De Marco, & Isasmendi, 2014bSalusso, 2005Salusso, , 2010Salusso & Moraña, 2000, simultaneous studies comparing the reservoirs of both basins have not yet been published. Given that these reservoirs bear considerable economic and ecological importance, this study is aimed at characterizing the water quality in five reservoirs of the two different systems, in order to provide information for their management and monitoring.…”

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confidence: 99%

Comparative reservoir limnology in Juramento (Salta) and Salí-Dulce (Tucumán) Basins in Argentina

Salusso

Moraña

2017

RBT

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The reservoirs of the upper Juramento basin (Cabra Corral and El Tunal) and the Salí-Dulce basin (El Cadillal, Río Hondo, and Escaba) show certain peculiarities due to their geographical location, basin morphology and limnological features. Such peculiaritieswere compared duringsignificant algal bloom periodsbetween 2002 and 2008, by analyzing the mainphysicochemical parameters and ecological attributes of the phytoplankton assemblagesusing standard methods. Tucumán reservoirs were different in most variables showing higher values of conductivity, nutrients and algal biomass.Regarding the hydrological cycle, El Cadillal exhibited the lowest biomass average (2.74 mg Chl.m-3) during maximum water flows, whereas the Cabra Corral lacustrine zone exhibited the highest biomass average (63.36 mg Chl.m-3) during minimum water flows. For the same period, the Cabra Corral lacustrine zone exhibited lower phytoplankton diversity and richness (1.37 and 9, respectively), in accordance with dinophyte blooms of Ceratium sp. In all reservoirs, the following biological variables showed a significant contrast in the hydrological cycle: highest phytoplankton biomass during minimum water flows (35.68 mg Chl-a m-3) vs. waterfloods (13.68 mg Chl-a m-3) (T = 3.42, P = 0.001). During minimum water flows, richness (14.30 sp.) and equitability (0.51) were lower vs. waterfloods (20.23, 0.59, respectively) (T = 2.36; P = 0.0196), as a result of the allochthonous nutrients provided by the main tributaries.Management of the reservoirs’hydrometric levels during dry season determines the deterioration of the waterquality with increased algal blooms. In order to ensure the systems’ sustainability, eutrophication must be controlledwithprograms to reduce diffuse nutrient loads and to treat residential and agroindustrial effluents, particularly in Sali-Dulce basin.

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Características Físicas, Químicas y Fitoplancton de Ríos y Embalses de la Alta Cuenca del Río Juramento (Salta, Argentina)

Cited by 5 publications

References 0 publications

Composição e variação sazonal da riqueza do fitoplâncton na foz de rios do delta do Jacuí, RS, Brasil

Composição e variação sazonal da riqueza do fitoplâncton na foz de rios do delta do Jacuí, RS, Brasil

Ecological Conditions and Benthic Macroinvertebrates of Lake Tinishu Ababya, Ethiopia

Comparative reservoir limnology in Juramento (Salta) and Salí-Dulce (Tucumán) Basins in Argentina

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