Consulta: subjectFacets:"Periphyton"
Registros recuperados: 22
Data/hora: 01/06/2024 10:29:54

О концепции экологической группировки гидробионтов.
Provedor de dados: 13
Autores: Протасов, А. А.
Рассмотрены основные положения концепции экологической группировки гидробионтов. Предложена их уточнённая классификация. Обсуждается вопрос о взаимосвязи группировок, облигатных и случайных или временных представителях группировок, на основе адаптационного градиента. Рассмотрены вопросы эволюции экологических группировок.
Tipo: Journal Contribution
Palavras-chave: Экологические группировки гидробионтов; Бентос; Планктон; Перифитон; Нейстон; Гидробиология; Биом; Гидросфера; Ecological groups of hydrobionts; Benthos; Plankton; Periphyton; Neuston; Hydrobiology; Biome; Hydrosphere; Экологічні групировки гідробіонтів; Перифітон; Гідробіологія; Біом; Гідросфера.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/794

Микрофлора нефтегавани Севастопольской бухты (Черное море)
Provedor de dados: 13
Autores: Дорошенко, Ю. В.
Приведены результаты изучения численности различных групп гетеротрофных микроорганизмов перифито-на на двух системах гидробиологической очистки в Севастопольской бухте. Отмечено, что максимальные значения численности нефтеокисляюших бактерий на обеих системах наблюдались в августе, когда темпера­тура воды и количество питательных веществ оптимальны для развития микроорганизмов. Коэффициент корреляции между численностью гетеротрофных и нефтеокисляюших бактерий в воде равен 0,72 (Р=0,05).
Tipo: Journal Contribution
Palavras-chave: Нефтеокисляющие и гетеротрофные бактерии; Перифитон; Системы гидробиологической очистки; Черное море; Oil-oxidasing and heterotrophic bacteria; Periphyton; Hydrobiological cleaning systems; Black Sea Periphyton Bacteria Cleaning Periphyton Cleaning Bacteria http://aims.fao.org/aos/agrovoc/c_5709 http://aims.fao.org/aos/agrovoc/c_1661 http://aims.fao.org/aos/agrovoc/c_765.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/227

Химический состав органического вещества в перифитоне системы гидробиологической очистки морской воды
Provedor de dados: 13
Autores: Гапонюк, Т. О.
Впервые получены данные об органическом веществе в перифитоне системы гидробиологической очистки морской воды. Установлено, что количество белка находилось в пределах 0.5 – 2.5 мг/100 мг, аминокислот 0.01 – 0.9 мг/100 мг, углеводов 2.0 – 7.0 мг/100 мг, липидов 1.6 – 7.1 мг/100 мг, нуклеиновых соединений (свободные нуклеотиды, РНК, ДНК) 0.7 – 2.3 мг/100 мг, углеводородов 2.8 – 4.2 мг/100 мг. Количество нефтяных углеводородов в среднем составляло 1.6 мг/100 мг. Отмечено преобладание количества липидно-углеводородного комплекса над остальными компонентами химического состава перифитона за период с января по август 2005 г. и выявлена корреляция между содержанием углеводородов и нефтяных углеводородов, с одной стороны, и количеством липидов, с другой (средний...
Tipo: Journal Contribution
Palavras-chave: Перифитон; Органическое вещество; Система гидробиологической очистки; Черное море; Periphyton; Organic matter; System of water hydrobiological purification; Black Sea Water purification Periphyton Organic matter Periphyton Organic matter Water purification http://aims.fao.org/aos/agrovoc/c_5709 http://aims.fao.org/aos/agrovoc/c_5387 http://aims.fao.org/aos/agrovoc/c_34145.
Ano: 2006
URL: http://repository.ibss.org.ua/dspace/handle/99011/310

Микрофлора акватории в районе размещения  систем гидробиологической очистки морских вод
Provedor de dados: 13
Autores: Дорошенко, Ю. В.
Приведены данные по численности и биохимическим особенностям бактерий перифитона и морской воды в районе размещения систем гидробиологической очистки морских вод. Установлено, что численность микроорганизмов перифитона систем гидробиологической очистки в 100 – 10000 раз выше, по сравнению с их численностью в морской воде. Численность бактерий в воде при волновом воздействии возрастает в 10 – 100 раз и может достигать значений, характерных для микроорганизмов перифитона. Все выделенные культуры бактерий и дрожжей способны расти на нефти и нефтепродуктах.
Tipo: Journal Contribution
Palavras-chave: Periphyton; Periphyton; Http://aims.fao.org/aos/agrovoc/c_5709.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/583

Influence of periphyton substrates and rearing density on Liza aurata growth and production in marine nursery ponds
Provedor de dados: 5
Autores: Richard, Marion; Maurice, Julien-thomas; Anginot, Aurore; Paticat, Francois; Verdegem, M. C. J.; Hussenot, Jerome.
The main objectives of this investigation were to test the effects of (i) the presence of periphyton substrates, (ii) rearing density and (iii) supplemental feeding with dry feed on the growth and production of golden mullet (Liza aurata) juveniles. Twenty-six 1 m(2)-cages were installed in a French marine pond from April till June 2008. Mullets were stocked in cages with or without substrate at a density of 0, 20,40 or 60 individuals per cage. Each treatment was carried out in triplicate. In addition, 20 fish were put in three tanks and fed ad libitum with dry feed. The results showed that (i) although mullets were seen to graze on periphyton substrates, their presence did not affect,mullet growth and production. In future studies, meshed substrates could...
Tipo: Text
Palavras-chave: Periphyton; Mullet; Extensive aquaculture; Artificial substrate; Marine pond.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00029/14067/11614.pdf

Trophic relationships between benthic or planktonic microphytes and infaunal bivalve molluscs
Provedor de dados: 5
Autores: Plantecuny, M; Bodoy, Alain.
In order to estimate energetic relationship, microphytic and benthic bivalve levels of a shallow (1.5 m), sandy ecosystem near Marseille (Gulf of Fos, Southern France) were sampled monthly during 1.5 year, in two sites differing by their wave exposure. In the sheltered area, the bivalve Ruditapes decussatus was the dominant species, while another bivalve, Donax trunculus , was found in the open, wave exposed site. Chlorophyll a and primary production of the phytoplankton and the microphytobenthos, as well as population dynamic, growth and biochemical composition of bivalves (lipids, proteins and carbohydrates) were monitored.
Tipo: Text
Palavras-chave: Ruditapes decussatus; Bivalvia; Periphyton; Phytoplankton; Biochemical composition; Growth; Marine molluscs; Hydrodynamics; Seasonal variations; Primary production; Trophic relationships.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1528.pdf

Submersion time, depth, substrate type and sampling method as variation sources of marine periphyton
Provedor de dados: 5
Autores: Richard, Marion; Trottier, C.; Verdegem, M. C. J.; Hussenot, Jerome.
Periphyton is an additional food source in African and Asian brackish and freshwater fish ponds. The present study was a preliminary assessment of periphyton development on artificial substrates in temperate marine ponds. The effects of submersion time, substrate type, water depth, and total or partial sampling methods on the quantity and quality of periphyton collected, were evaluated. Four types of substrate (W: wooden poles, S: smooth fiber-glass strips, m: mosquito screen (1 mm-mesh) and M: garden netting (5 mm-mesh)) were deployed in a marine pond, and periphyton was collected 15 and 30 days later. The total amount of periphyton per substrate unit was collected as one sample or as 5 sub-samples. Results showed that (i) periphyton biomass in a marine...
Tipo: Text
Palavras-chave: Aquaculture; Marine pond; Artificial substrate; Fouling; Periphyton.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7422.pdf

Similarity among periphyton algal communities in a lentic-lotic gradient of the upper Paraná river floodplain, Brazil
Provedor de dados: 88
Autores: RODRIGUES,LILIANA; BICUDO,DENISE DE C.
Floristic comparison of periphyton communities from three systems with different hydrodynamic regimes (lentic, semilotic, and lotic) was carried out during high and low water periods on the Upper Paraná River floodplain. For each period and system, glass slides were sampled every two days during 18-day periods, and Eichhornia azurea Kunth petioles were sampled three times. A total of 228 species was collected, representing 12 classes, mainly diatoms and desmids. The highest species-richness was found in communities from lentic system and during high water. Species richness in the lotic system was more stable over succession and hydrological periods. Algal taxonomic structure in river community was clearly separated from the other two systems, with 43% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Benthic algae; Species composition; Similarity; Tropical floodplain.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300001

Use of food resources and resource partitioning among five syntopic species of Hypostomus (Teleostei: Loricariidae) in an Atlantic Forest river in southern Brazil
Provedor de dados: 103
Autores: Abilhoa,Vinicius; Valduga,Marcos O.; Frehse,Fabricio de A.; Vitule,Jean R.S.
ABSTRACT We analyzed the diet and resource partitioning among five syntopic species of Hypostomus Lacépède, 1803 in the Corumbataí River in southeastern Brazil. The gut contents of 352 individuals were assessed and 21 food items were identified and quantified under an optical microscope. The food items found in the gut contents indicate that these suckermouth loricariids are bottom-dwelling detritivorous/periphytivorous catfishes. PERMANOVA and SIMPER analyses indicated variation in the consumption of some resources, and the contribution of periphytic algae was primarily responsible for such dissimilarity. ECOSIM analyses of dietary overlap showed evidence of resource sharing among all species in the dry and rainy periods. This is most likely the result of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Armoured catfish; Feeding; Food overlap; Periphyton; Siluriformes.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000600700

Independent effects of grazing and tide pool habitats on the early colonisation of an intertidal community on western Antarctic Peninsula
Provedor de dados: 97
Autores: Segovia-Rivera,V; Valdivia,N.
BACKGROUND: Prevailing environmental conditions can modulate the structuring role of biotic interactions. In intertidal habitats, less stressful environmental conditions and/or higher grazer densities may allow grazing effects to be stronger in tide pools than on emergent rocks. To test this hypothesis, we conducted a manipulative experiment on an intertidal rocky shore in Fildes Bay, King George Island, in which the effect of the dominant grazer Nacella polaris on the structure of benthic periphyton communities was compared between emergent rock and tide pool habitats. Also, we determined the spatial variation in density, weight, and maximum length of individuals of N. polaris in both habitats RESULTS: The density of N. polaris was significantly larger in...
Tipo: Journal article
Palavras-chave: Antarctica; Environmental stress model; Grazing; Herbivory; Intertidal; Nacella polaris; Periphyton.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2016000100003

Structural and successional variability of periphytic algal community in a Amazonian lake during the dry and rainy season (Rio Branco, Acre)
Provedor de dados: 36
Autores: França,Raquel C.S; Lopes,Maria Rosélia Marques; Ferragut,Carla.
The colonization process and successional patterns of a periphytic algal community were evaluated in a Amazonian Viveiro Lake (Rio Branco, Acre, Brazil). Sampling was performed over a period of 35 days; at four-day intervals for 20 days, and then at five-day intervals. Water sampling for physical, chemical and biological analyses was done during the dry and rainy season. Glass slides were used as artificial substrates for periphyton colonization. The structural community was evaluated through population density, algae class, diversity indices and descriptive species. Species richness, diversity and evenness increased as succession progressed. While density of Bacillariophyceae, Euglenophyceae and Zygnemaphyceae increased with succession, Cyanobacteria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Colonization; Succession; Diversity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000200010

Soft-bodied benthic algae in pristine Brazilian streams: from acid to karst
Provedor de dados: 39
Autores: Fonseca,Bárbara Medeiros; Feijó,Lidia Mendes; Mendonça-Galvão,Luciana de.
ABSTRACT This study evaluated soft-bodied benthic algae from seven streams located in protected areas of central Brazil (Parque Nacional de Brasília, Parque Nacional da Chapada dos Veadeiros and Parque Estadual de Terra Ronca), and related them to abiotic factors. We addressed the following questions: A) how algal community structure in Cerrado streams is influenced by the marked seasonality typical of the region; and B) how karst geology influences algal communities in Parque Estadual de Terra Ronca, as compared to streams in other Cerrado areas. Samples were collected between 2012 and 2013 from a single site in each stream, and upstream and downstream of caves present in Parque Estadual de Terra Ronca. Altogether, 159 taxa were recorded. Algal community...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic variables; Biodiversity; Cerrado; Cyanobacteria; Lotic systems; Periphyton; Soft-bodied algae; Pristine streams; Zygnematophyceae.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300517

Structure and dynamics of the community of periphytic algae in a subtropical reservoir (state of São Paulo, Brazil)
Provedor de dados: 39
Autores: Taniwaki,Ricardo Hideo; Borghi,Tatiana Cintra; Magrin,Albano Geraldo Emílio; Calijuri,Maria do Carmo; Bottino,Flávia; Moschini-Carlos,Viviane.
Much remains to be learned about biological diversity, which constitutes a valuable natural resource. Due to the pressure that human activity has put on natural resources, biodiversity has been reduced, often unbeknownst to those responsible for that activity. Therefore, we aimed to perform a quantitative and qualitative analysis of periphytic algae in the Itupararanga reservoir, correlating the results with the physical and chemical characteristics of the water, as well as with climatic conditions. To that end, five samples were collected at four sampling stations in the Itupararanga reservoir during the year 2010. Aquatic macrophytes were collected with a 156-cm² frame, and the periphytic algae were scraped free of the macrophytes with a brush. Samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Macrophytes; Water quality; Detrended correspondence analysis; Principal components analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300013

Gomphonema Ehrenberg (Bacillariophyceae) in a lotic environment of the Upper Paraná River floodplain, Brazil
Provedor de dados: 3
Autores: Osório, Nicolli Cristina; Tremarin, Priscila Izabel; Ludwig, Thelma Veiga; Rodrigues, Liliana.
A taxonomic study of species of the genus Gomphonema Ehrenberg (Bacillariophyceae) was performed in alotic environment (Ipoitã Channel) of the Upper Paraná River Floodplain. Samplings were performed in June, September and December 2013 and February 2014. Two petioles of Eichhornia azurea (Sw) Kunth were sampled at three different sites in the channel. Twelve species and two taxonomic varieties were identified. All species identified were recorded at the sampling site 3, loca ated close to the Ivinhema River. The lowest number of taxa occurred at the sampling site 1 (9 specific and infra specific taxa), in the confluence with the Paraná River. All taxa of Gomphonema were the first record for the Upper Paraná River Floodplain. Our results emphasize the lack...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatom; Distribution area; Periphyton; Taxonomy.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32134

Structure and dynamics of the periphytic algae community of Iraí reservoir, Paraná State, Brazil - DOI: 10.4025/actascibiolsci.v32i1.3764
Provedor de dados: 3
Autores: Moresco, Carina; UEM; Rodrigues, Liliana; UEM.
In order to analyze the structure and dynamics of the periphytic community in Iraí reservoir, an eutrophic environment, samples were taken in two seasons: summer (April) and winter (September) of 2002, in littoral areas from three regions of the reservoir (upper, intermediary and lower). Rooted aquatic vegetation were used as sampling substrates, because they were found in all sampling sites. A total of 297 species was recorded (225 in April, 73 exclusive taxa; and 224 in September, with 72 exclusive taxa). Bacillariophyceae predominated in all regions in both seasons, in species number, as well in density. There were differences in richness among zones; intermediary and lower regions were more similar, mainly in September. The periphytic algae density...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.00.00-9 reservoir; Periphyton; Richness; Abundance Ecologia.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3764

Euastrum and Micrasterias (family Desmidiaceae) in lentic tropical ecosystem, Brazil
Provedor de dados: 49
Autores: Silva,Francielle Karla Lopes da; Felisberto,Sirlene Aparecida.
This study aimed to perform the taxonomic survey of Euastrum and Micrasterias in a lentic tropical environment, seeking to contribute to the knowledge on biodiversity and geographical distribution of the Zygnemaphyceae. Conducted at the Samambaia Reservoir, ten samples were collected in the dry season (24/09/10 and 04/11/10) and ten in the rainy season (06/01/11 and 02/03/11). Periphyton was sampled from stems of aquatic plants (Cyperaceae), which were in the marginal area of the reservoir. With the floristic survey, 22 taxa were identified representing the genus Euastrum (9) and Micrasterias (13), of these 16 are new records for the State of Goiás. In relation the frequency of occurrence and the seasonal period, 19 taxa were classified in the rare...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desmids; Periphyton; Sazonal; Taxonomy; Zygnemaphyceae.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100105

The genus Tryblionella W. Smith (Bacillariaceae, Bacillariophyta) in southern Brazil salt marshes
Provedor de dados: 49
Autores: Bertolli,Lucielle Merlym; Talgatti,Dávia Marciana; Nascimento,Thamires Mariah da Silveira; Torgan,Lezilda Carvalho.
Abstract: Tryblionella is a large epipelic genus, widespread from fresh to marine waters. Most of the studies including the genus are based only in light microscopy. Few recent studies are exclusively dedicated to Tryblionella and the ultrastructure of some species is still little known. In this paper we present eleven species of Tryblionella found in epiphyton and microphytobenthos in Patos Lagoon salt marshes. All the species are described, illustrated in light and scanning electron microscopy and comments about their taxonomy, distribution and ecology are provided. Two taxa are reported for the first time in the State of Rio Grande do Sul and one in Southern Brazil. The number of species registered in this study comprises nearly a half of the number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatoms; Patos Lagoon; Periphyton; Taxonomy; Ultrastructure.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100204

Predation effects of Melanoides tuberculatus Müller 1774) on periphytic biofilm colonization: an experimental approach
Provedor de dados: 49
Autores: Vasconcelos,Janiele França; Barbosa,José Etham de Lucena; Azevêdo,Evaldo de Lira; Azevêdo,Daniele Jovem da Silva; Anacleto,Maria José Pinheiro.
The present study evaluated the predation effects of the gastropod Melanoides tuberculatus on the taxa richness and density of the periphyton community. A laboratory experiment was conducted with two treatments: control (without M. tuberculatus) and with M. tuberculatus, each treatment being replicated four times. For periphyton colonization, glass slides were placed in 3.5 L of water from the environment of the gastropods. The analysis of species richness and density of the periphyton community on these artificial substrates showed significant differences (p &lt;0.05) between treatments. In the treatment with M. tuberculatus, taxa richness and density were lower, with a predominance of Chantrasia macrospora in the last days of the experiment. It follows...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive species; Herbivory; Laboratory experiment; Melanoides tuberculatus; Periphyton.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200096

Epiphytic diatoms (Diatomeae) from Piraquara II urban reservoir, Paraná state
Provedor de dados: 49
Autores: Marra,Raquel Cristina; Tremarin,Priscila Izabel; Algarte,Vanessa Majewski; Ludwig,Thelma Veiga.
Abstract We conducted a taxonomical study of epiphytic diatoms on the macrophytes Polygonum hydropiperoides, Ludwigia peruviana and Alternanthera philoxeroides collected in the mesotrophic reservoir Piraquara II flooded in 2009, located in the state of Paraná. A total of 135 infrageneric taxa were identified, among them five at generic level and other five are first records to the state. We provided illustration, valve metrics, meristics limits and taxonomic reference for each taxon. Also, life forms and species frequency are given. The most frequent diatoms totalized 15.3% of total identified taxa and sporadic species represented 54.7%. Achnanthidium minutissimum (Kützing) Czarnecki and Brachysira neoexilis Lange-Bertalot occurred in more than 90% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillariophyta; Freshwater; Macrophytes; Mesotrophic; Periphyton; Taxonomy.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400303

Epiphytic Eunotia (Bacillariophyceae) on Podostemum from Santa Catarina, southern Brazil, including new observations on morphology and taxonomy of some rare recorded species
Provedor de dados: 49
Autores: Cavalcante,Kaoli Pereira; Tremarin,Priscila Izabel; de Castro,Emanuela Cristina; de Azevedo Tibiriçá,Carlos Eduardo Junqueira; Wojciechowski,Juliana; Ludwig,Thelma Alvim Veiga.
Eunotia is a highly diverse diatom genus in the Neotropics. Considerable morphological variability of the valve showed in several species of the genus resulted in a quite confused taxonomy. Twelve Eunotiataxa attached to Podostemum spp. were investigated using the light microscopy (LM). Additionally, scanning electron microscopy (SEM) was used in order to investigate the fine morphology of most abundant taxa. Samples were collected from four rivers from the State of Santa Catarina between March 2009 and July 2010. The freshwater diatom flora from this south Brazilian state is poorly known in relation to its neighboring states. Eunotia biseriatoides has intermediate features betweenEunotia and Perinotia, and the circumscription of these genera is discussed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatom; Eunotiaceae; Lotic systems; Periphyton; Taxonomy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300119

Lab-scale periphyton-based system for fish culture
Provedor de dados: 65
Autores: Cavalcante,Davi de Holanda; Silva,Suzete Roberta da; Pinheiro,Paloma Damasceno; Martins,Ádila da Cunha; Sá,Marcelo Vinícius do Carmo e.
The present research aimed to assess a lab-scale model to study periphyton-based systems for fish culture. Twenty-five liters plastic aquaria were stocked with three Nile tilapia, Oreochromis niloticus, juveniles (0.77±0.09g; 12 fish m-2) for 6 weeks in a 2x2 factorial design. Small plastic bottles were placed in some aquaria for periphyton development. Two feeding regimes were employed: "full-fed" (standard feeding rates were fully adopted) and "half-fed" (50% of standard feeding rates). Growth performance and limnological variables were observed in each aquarium. There werefive replicates per treatment. Fish have fed actively on periphyton, especially in the half-fed aquaria. The placement of periphyton bottles had no significant effects on the water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Tilapia; Feeding restriction; Fish culture.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200022

Periphyton biomass on artificial substrates during the summer and winter
Provedor de dados: 65
Autores: Signor,Altevir; Signor,Arcangelo Augusto; Boscolo,Wilson Rogério; Reidel,Adilson; Klein,Sidnei; Feiden,Aldi.
This study evaluated the periphyton production on artificial substrates considering it as a source of low cost live food for fish. Blades of artificial substrates such as wood, black plastic, acrylic, fiberglass, ceramics and glass (all with 144cm2 blades, 24 for each substrate) were submerged 20.0cm below the water column for 35 days in the winter and 42 days in the summer. The blades were randomly installed in 200m3 pond and evaluated for the biomass production at different phases during the summer and winter. Four blades of each substrate were collected weekly, and the periphytic community was carefully scraped with a spatula and fixed in 4% formaldehyde. The periphytic biomass productivity was evaluated by artificial substrate area and per day. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microorganisms-food; Hatchery; Periphyton; Phytoplankton.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000100072