Caloric density of aquatic macrophytes in different environments of the Baía river subsystem, upper Paraná river floodplain, Brazil

Lopes, Célia de Almeida; Faria, Anna Christina Esper Amaro de; Manetta, Gislaine Iachstel; Benedito-Cecilio, Evanilde

doi:10.1590/s1516-89132006000600018

Cited by 5 publications

(3 citation statements)

References 12 publications

(15 reference statements)

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“…Semi deciduous leaf species presents highenergetic amplitude and are available to aquatic ecosystems once it reaches the water bodies. The reported species presented higher amplitude than the 11.7 to 19.2 KJ.g -1 reported for riparian vegetation specimens from the upper Paraná river basin (Dourado et al, 2004), and aquatic macrophytes from the same basin (7.9 to 19.5 KJ.g -1 ) (Lopes et al, 2006). The caloric content of vascular plants from Semi deciduous forest vary greatly and highlights the importance of leaf diversity as energy input to aquatic systems.…”

Section: Discussionmentioning

confidence: 71%

Caloric content of leaves of five tree species from the riparian vegetation in a forest fragment from South Brazil

et al. 2015

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Aim: The measurement of the caloric content evidences the amount of energy that remains in the leaf and that can be released to the aquatic trophic chain. We assessed the energy content of leaves from five riparian tree species of a forest fragment in south Brazil and analyzed whether leaf caloric content varied between leaf species and between seasons (dry and wet). The studied sites are located in Northwest of Paraná State, inside a Semi-Deciduous Forest fragment beside two headwater streams. Methods Sampling sites were located along the riparian vegetation of these two water bodies, and due to its proximity and absence of statistical differences of caloric values, analyzed as one compartment. Results Caloric content varied significantly among species and among all pairs of species, with exception of Nectandra cuspidata Ness and Calophyllum brasiliensis Cambess. Two species presented significant differences between seasons, Sloanea guianensis (Aubl.) Ben and Calophyllum brasiliensis Cambess. Conclusions The absence of significant seasonal differences of energy content for some species may be due to the characteristics of the tropical forest, in which temperature did not varied dramatically between seasons. However, the energy differed between species and seasons for some species, emphasizing the necessity of a preliminary inspection of energy content, before tracing energy fluxes instead of using a single value to all species from riparian vegetation.

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Section: Discussionmentioning

confidence: 71%

Caloric content of leaves of five tree species from the riparian vegetation in a forest fragment from South Brazil

et al. 2015

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“…Dominguez et al [31] evaluated the chemical composition of water hyacinth plants grown on an anaerobically digested pig manure and reported an energy content of 15.4 MJ kg -1 . Lopes et al [32] reported that the energy content of natural stands of water hyacinth and water lettuce plants ranged from 9.2 to 15.9 MJ kg -1 and from 9.8 to 14.5 MJ kg -1 , respectively. Steubing et al [33] reported that the energy content ranged from 12.9 to 13.2 MJ kg -1 in natural stands of parrot's feather.…”

Section: Nutritionmentioning

confidence: 99%

Assessment of Hydroponically Grown Macrophytes for Their Suitability as Fish Feed

Snow¹,

Ghaly²

2008

American J. of Biochemistry and Biotechnology

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Water hyacinth, water lettuce and parrot's feather plants were examined for their ability to remove nutrients from aquaculture wastewater at two retention times. During the experiment, the aquatic plants grew rapidly in the hydroponics system and appeared healthy with green color. At hydraulic retention times (HRTs) of 6 and 12 days, the average water hyacinth, water lettuce and parrot's feather yields were 83, 51 and 51 g (dm) m -2 and 49, 29 and 22 g (dm) m -2 , respectively. The aquatic plants were able to significantly reduce the pollution load of the aquaculture wastewater. The TS, COD, NH 4 + -N, NO 2 --N, NO 3 --N and PO 4 3--P reductions ranged from 21.4 to 48.0%, from 71.1 to 89.5%, from 55.9 to 76.0%, from 49.6 to 90.6%, from 34.5 to 54.4% and from 64.5 to 76.8%, respectively. Generally, the reductions increased with longer retention times and were highest in compartments containing water hyacinth followed by compartments containing water lettuce and parrot's feather. The nutritive value of the three wastewater grown plants was assessed to determine the suitability of using the plants as a component in fish feed. The three wastewater grown plants did not contain sufficient amounts of protein and fat to meet the dietary requirements of fish and shellfish. They also contained high concentrations of K, Cu, Fe, Mn, Se and Zn, which can lead to reduced feed intake, weight gain and growth rates in fish and shellfish.

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“…Several others studies have stressed the importance of energy measures for the understand- ing of the dynamics of aquatic ecosystems (GOLLEY, 1961;CUMMINS and WUYCHECK, 1971; DRIVER et al, 1974;SALONEN et al, 1976;CLARKE et al, 1985;DAUVIN and JONCOURT, 1989;BEUKEMA, 1997;DOYLE et al, 2007). Nevertheless, even in well-studied temperate regions, the knowledge of the caloric content is still incomplete for many organisms (DOYLE et al, 2007).In Neotropical aquatic ecosystems, few studies have thus far investigated the caloric content, so data on the energy content of organisms in these ecosystems is even more scarce and mostly restricted to ichthyofauna (NGAN et al, 1993;DORIA and ANDRIAN, 1997;BENEDITO-CECILIO et al, 2004;SANTANA et al, 2005;ESPÍNOLA et al, 2008), aquatic macrophytes (ESTEVES and THOMAZ, 1990;DOURADO et al, 2004;LOPES et al, 2006) and a few invertebrate groups (HIGUTI et al, 2003;BAGATINI et al, 2007). Therefore, additional studies on invertebrates will contribute to the better understanding of the energy flow in neotropical ecosystems, as aquatic invertebrates play an important role in the trophic dynamics of freshwater ecosystems, mainly through their function of recycling nutrients and detritus (HENRY and SANTOS, 2008).…”

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Effect of the Environmental Factors on the Caloric Content of Benthic and Phytophilous Invertebrates in Neotropical Reservoirs in the Paraná State, Brazil

Bagatini

Benedito

Higuti

2010

International Review of Hydrobiology

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The complexity of the relations between the organisms and the environment are reflected through the energy content. So we tested the hypothesis on body energy content variation in invertebrates and its relation with some environmental factors (season, habitat type, trophic status and trophic guild). We expected higher energy values for phytophilous fauna, rainy season, in reservoirs with higher trophic levels and for herbivorous invertebrates. The results showed the influence of seasonality and trophic status of the reservoir on the energy content of invertebrates, which was higher in the rainy season and in the mesotrophic reservoirs, due to the input of allochthonous material during this season, confirming our initial prediction. A higher caloric content was recorded for carnivorous and detritivorous invertebrates. The differences between the trophic guilds were primarily related to the opportunistic feeding behavior, which may be considered as one of the main factors controlling the energy flow of benthic and phytophilous invertebrates. IntroductionThe energy dynamics in aquatic ecosystems can be better understood by studying the caloric content of the organisms (MUNN and BRUSVEN, 1991). However, the small size of aquatic invertebrates is often a problem for obtaining energy measurements, mainly due to the difficulty of sampling a large number of small specimens needed for calorimeter measurements (FELLER and WARWICK, 1988;LUCAS, 1992). Several studies have improved the knowledge on the energy content of several organisms.Since the pioneer work of LINDEMAN`s (1942) about the energy availability and trophic chains, several research projects were carried out in aquatic marine and freshwater ecosystems of temperate regions. A study performed by WISSING and HASSLER (1971) in freshwater ecosystems showed that the caloric values of invertebrates were related to seasonal variations. For example, the energetic content of Chironomidae was higher in the summer, because this is the growing season and quickly declined in the winter. STANCZYKOWSKA and LAWACZ (1976) also recorded higher energy value of Dreissena polymorpha in summer. Several others studies have stressed the importance of energy measures for the understand- ing of the dynamics of aquatic ecosystems (GOLLEY, 1961;CUMMINS and WUYCHECK, 1971; DRIVER et al., 1974;SALONEN et al., 1976;CLARKE et al., 1985;DAUVIN and JONCOURT, 1989;BEUKEMA, 1997;DOYLE et al., 2007). Nevertheless, even in well-studied temperate regions, the knowledge of the caloric content is still incomplete for many organisms (DOYLE et al., 2007).In Neotropical aquatic ecosystems, few studies have thus far investigated the caloric content, so data on the energy content of organisms in these ecosystems is even more scarce and mostly restricted to ichthyofauna (NGAN et al., 1993;DORIA and ANDRIAN, 1997;BENEDITO-CECILIO et al., 2004;SANTANA et al., 2005;ESPÍNOLA et al., 2008), aquatic macrophytes (ESTEVES and THOMAZ, 1990;DOURADO et al., 2004;LOPES et al., 2006) and a few invertebrate group...

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Caloric density of aquatic macrophytes in different environments of the Baía river subsystem, upper Paraná river floodplain, Brazil

Abstract: ABSTRACT

Cited by 5 publications

References 12 publications

Caloric content of leaves of five tree species from the riparian vegetation in a forest fragment from South Brazil

Caloric content of leaves of five tree species from the riparian vegetation in a forest fragment from South Brazil

Assessment of Hydroponically Grown Macrophytes for Their Suitability as Fish Feed

Effect of the Environmental Factors on the Caloric Content of Benthic and Phytophilous Invertebrates in Neotropical Reservoirs in the Paraná State, Brazil

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