Yeast and Macroinvertebrate Communities Associated with Leaf Litter Decomposition in a Second Order Stream

Sampaio, Ana; Cortes, Rui; Leão, Cecı́lia

doi:10.1002/iroh.200410764

Cited by 16 publications

(7 citation statements)

References 43 publications

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“…Bacteria become more important in the latter stages of litter decomposition, but their contribution to microbially driven litter mass loss is generally low (up to 14% [27,31]). Less information is available on the roles of yeasts, zoosporic fungi, oomycetes, and protists, but they were found to be associated with decomposing leaf litter and can affect litter decomposition directly or indirectly via trophic interactions [32][33][34][35][36]. The role of algae on litter decomposition is also uncertain with some studies suggesting that they can stimulate litter decomposition via microbial priming (i.e., the stimulation of microbial decomposers' activity by the addition of labile carbon) [37], while other studies found inhibition or no effect [38,39].…”

Section: Phases and Key Playersmentioning

confidence: 99%

Organic Matter Decomposition and Ecosystem Metabolism as Tools to Assess the Functional Integrity of Streams and Rivers–A Systematic Review

Ferreira

Elosegi

Tiegs

et al. 2020

Water

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Streams and rivers provide important services to humans, and therefore, their ecological integrity should be a societal goal. Although ecological integrity encompasses structural and functional integrity, stream bioassessment rarely considers ecosystem functioning. Organic matter decomposition and ecosystem metabolism are prime candidate indicators of stream functional integrity, and here we review each of these functions, the methods used for their determination, and their strengths and limitations for bioassessment. We also provide a systematic review of studies that have addressed organic matter decomposition (88 studies) and ecosystem metabolism (50 studies) for stream bioassessment since the year 2000. Most studies were conducted in temperate regions. Bioassessment based on organic matter decomposition mostly used leaf litter in coarse-mesh bags, but fine-mesh bags were also common, and cotton strips and wood were frequent in New Zealand. Ecosystem metabolism was most often based on the open-channel method and used a single-station approach. Organic matter decomposition and ecosystem metabolism performed well at detecting environmental change (≈75% studies), with performances varying between 50 and 100% depending on the type of environmental change; both functions were sensitive to restoration practices in 100% of the studies examined. Finally, we provide examples where functional tools are used to complement the assessments of stream ecological integrity. With this review, we hope to facilitate the widespread incorporation of ecosystem processes into bioassessment programs with the broader aim of more effectively managing stream and river ecosystems.

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Section: Phases and Key Playersmentioning

confidence: 99%

Organic Matter Decomposition and Ecosystem Metabolism as Tools to Assess the Functional Integrity of Streams and Rivers–A Systematic Review

Ferreira

Elosegi

Tiegs

et al. 2020

Water

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“…In one hand, field experiments have shown reduced diversity, density, and biomass of invertebrates, especially detritivores, in streams receiving eucalypt leaf litter (ABELHO and GRAÇA, 1996;LARRAÑAGA et al, 2006) or in experiments on leaf litter colonization (BASAGUREN and POZO, 1994;SAMPAIO et al, 2004). On the other hand, there is evidence from laboratory experiments that some shredders feeding on E. globulus leaves fail to grow (CANHOTO and GRAÇA, 1995).…”

Section: Introductionmentioning

confidence: 96%

Impacts of Eucalyptus globulus Plantations on Physiology and Population Densities of Invertebrates Inhabiting Iberian Atlantic Streams

Larrañaga

Basaguren

Pozo

2009

International Review of Hydrobiology

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The aim of our study was to evaluate the effects of Eucalyptus plantations on population and biochemistry parameters of 3 stream invertebrates. The shredder Echinogammarus spp. had significantly lower densities, proportion of adults and lower accumulation rates of mass, lipid, carbon and nitrogen in eucalypt sites than in native deciduous sites. For the shredder Sericostoma pyrenaicum (PICTET) similar densities were found in both site types, but mass accumulation rate was again lower in eucalypt sites than in the native ones. Contrastingly, density of the collector/grazer Habroleptoides confusa (SARTORI and JACOB) was higher in eucalypt sites than in native sites and maximum body length and protein accumulation rate was better explained by soluble reactive phosphorus content in the water than with eucalypt cover. IntroductionPlantations of eucalypt (mainly Eucalyptus globulus LABILL.) cover vast areas of the Iberian Peninsula. Unlike Australian eucalypt rainforests, where litterfall can be very diverse (CAMPBELL and FUCHSHUBER, 1994), leaf litter in Iberian eucalypt monocultures consists almost exclusively of eucalypt leaves (POZO et al., 1997;BAÑUELOS et al., 2004). These leaves have low palatability, low energy content and abundant toxic compounds (CANHOTO and GRAÇA, 1995;CANHOTO and LARANJEIRA, 2007). Therefore, because headwater stream communities are highly dependent on litter inputs from the riparian vegetation, concerns arise about the ecological impact of eucalypt plantations in Iberian streams.Research so far done to elucidate this point has followed either of two alternative approaches. In one hand, field experiments have shown reduced diversity, density, and biomass of invertebrates, especially detritivores, in streams receiving eucalypt leaf litter (ABELHO and GRAÇA, 1996;LARRAÑAGA et al., 2006) or in experiments on leaf litter colonization (BASAGUREN and POZO, 1994;SAMPAIO et al., 2004). On the other hand, there is evidence from laboratory experiments that some shredders feeding on E. globulus leaves fail to grow (CANHOTO and GRAÇA, 1995). There is, to our knowledge, no research linking the individual and the population or community levels, which would explain changes in density or biomass of the population as a function of the performance of individuals. One of the most meaningful individual-level variables for stream invertebrates is the accumulation of mass or energy in the body. For completing their life cycle, species need to maintain positive growth rates, because a great amount of energy is required for development and reproduction (see BEERSTILLER and ZWICK, 1995). During periods of abundance, energy is stored mainly as lipids, to be later used in reproduction or for self-maintenance during periods of scarcity (WILHELM, 2002;WINKELMANN and KOOP, 2007).The capacity of individuals to invest energy in reproduction clearly affects the performance of the population (LEHTONEN, 1996;KLEY and MAIER, 2003). In this sense, the capability of stream invertebrates to accumulate biomolecules like p...

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“…The SP content differed between alder and oak ( p < 0.001) and between alder and plane ( p < 0.01), and whatever the treatment, reached higher values in microcosms with alder leaves. This might be related to the fact that alder leaves are colonized faster by microorganisms . Although the differences were not significant between treatments with or without fecal access, in all litters leaching was less expressive in the latter situation, probably due the general higher crayfish leaf consumption observed in the absence of fecal pellets.…”

Section: Discussionmentioning

confidence: 77%

Assessment of the preferences of red swamp crayfish (Procambarus clarkii) fed with Riparian tree leaves: A microcosm study

Fidalgo

Ferreira

Sampaio

2013

Internat. Rev. Hydrobiol.

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We conducted a microcosm study to assess the preferences of Procambarus clarkii (Girard, 1852), an invasive and successful crayfish species, for conditioned leaf litter from alder, oak, and plane with and without feces access. Some chemical foliar characteristics were determined at the beginning and at the end of the experiment. Alder and plane leaves had higher total nitrogen and lower C:N ratio than oak. Oak and plane exhibited similar polyphenol contents. Animals preferred alder>plane>oak leaves (p < 0.0001) and a coprophagous trend was observed. Consumption rates varied among litters according to fecal availability and the interaction litter/fecal availability. Our results suggest that the importance of P. clarkii in breakdown of riparian tree leaves depends not only on the tree species and their characteristics, but also on access to fecal material. Leaf species with high N contents and low C:N ratios would be preferably consumed by the crayfish, and the consumption would be faster in lotic than in lentic systems.

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Yeast and Macroinvertebrate Communities Associated with Leaf Litter Decomposition in a Second Order Stream

Cited by 16 publications

References 43 publications

Organic Matter Decomposition and Ecosystem Metabolism as Tools to Assess the Functional Integrity of Streams and Rivers–A Systematic Review

Organic Matter Decomposition and Ecosystem Metabolism as Tools to Assess the Functional Integrity of Streams and Rivers–A Systematic Review

Impacts of Eucalyptus globulus Plantations on Physiology and Population Densities of Invertebrates Inhabiting Iberian Atlantic Streams

Assessment of the preferences of red swamp crayfish (Procambarus clarkii) fed with Riparian tree leaves: A microcosm study

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