Effects of pine plantations on structural and functional attributes of forested streams

Martínez, Antonio; Larrañaga, Aitor; Pérez, Javier Jiménez; Descals, Enrique; Basaguren, Ana; Pozo, Jesús

doi:10.1016/j.foreco.2013.08.024

Cited by 39 publications

(50 citation statements)

References 57 publications

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“…The warmer streams (S2 and S3) are surrounded by a temperate riparian forest of A. glutinosa, F. excelsior and C. Avellana which offer greater diversity of leaf litter inputs of high quality compared to the coldest one (S1), where river banks are completely dominated by F. sylvatica. Thus, S2 and S3 are able to support a more abundant community compared to S1 (Martínez et al, 2013b). Considering the close relationship between benthic detritivores (density and biomass) and leaf litter processing rates in Fig.…”

Section: Discussionmentioning

confidence: 89%

In-stream litter decomposition along an altitudinal gradient: does substrate quality matter?

et al. 2015

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In temperate streams, water temperature and organic matter inputs from surrounding forest vary along the altitude. We tested if the different features of streams of similar size determined by an altitudinal gradient might differentially affect the processing rate of different quality leaves (alder, oak and beech). To distinguish the relative contribution of microbial decomposition from overall decomposition, fine-and coarse-mesh bags were used. We determined decomposition rates, leaf-N and -P concentration, microbial respiration (fine bags), invertebrate colonisation (coarse bags) and density and identity of benthic invertebrates in three second-order streams. Alder decomposed faster than the other species in all three streams and regardless of mesh size due to its lower values of C:N, C:P and N:P. Unexpectedly, microbial decomposition rate did not vary among streams for any of the leaf species. The total decomposition rate of alder and oak showed a negative trend along the altitudinal gradient, the magnitude of the change in decomposition rates being similar for both species. The density and structure of the invertebrate community differed along the altitudinal gradient, related to temperature and surrounding vegetation, determining the decomposition rate. Unexpectedly, sensitivity of decomposition rate of different quality leaves to temperature does not differ along the gradient.

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Section: Discussionmentioning

confidence: 89%

In-stream litter decomposition along an altitudinal gradient: does substrate quality matter?

et al. 2015

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“…feeding signals on pine needles were 73% higher in afforested streams). Pine needles have thick cuticles and resins that delay decomposer and detritivore activity but needles are ultimately consumed by aquatic invertebrates in streams draining native coniferous forests (Richardson et al, 2005) and the same is likely to occur (Hladyz et al, 2010) or not (Martínez et al, 2013) in streams where this litter is exotic.…”

Section: Functional Attributesmentioning

confidence: 99%

Pine afforestation changes more strongly community structure than ecosystem functioning in grassland mountain streams

Príncipe

Márquez

Martina

et al. 2015

Ecological Indicators

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“…Riparian ecosystems are highly vulnerable to exotic plant invasion (Hood and Naiman, 2000) due to their milder microclimatic conditions and the frequent natural and anthropogenic disturbances that create diverse niches to support invasive species (Chytry et al, 2008). Shifts from native to exotic trees may alter the quality of leaf litter inputs into water body, thus causing effects on quantity and quality of nutrients (Molinero and Pozo, 2006), biotic communities (Weijers et al, 2009) and ecosystem functioning (Martinez et al, 2013). Several studies have been performed to examine invasive species effects on leaf decomposition rates in aquatic ecosystems by litterbags method, but still have found mixed effects (Swan et al, 2008;Marano et al, 2013;Serra et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Influence of invasiveAcer negundoleaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania

Krevš

Kucinskiene

2017

Knowl. Manag. Aquat. Ecosyst.

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-Riparian forests are known as important source of allochthonous organic matter entering to water ecosystems via fallen leaves. However, leaf litter, depending on their quality, may create different conditions for benthic microorganisms functioning in littoral zone of water bodies. In order to evaluate the impact of riparian invasive Acer negundo on littoral water zone of the River Neris (Lithuania), we performed physicochemical and microbiological investigations in bottom sediments of three different sites of the river. One sampling site was close by riparian A. negundo, another close by native Alnus glutinosa location and a third zone was near the shore without riparian vegetation. Content of nutrients in the littoral sediments differed between invasive and native trees leaf litter accumulation sites, while not always significantly. The highest microbial densities as well as benthic community respiratory activity (expressed as the rate of organic carbon mineralization) occurred in A. negundo leaves accumulation site. In sediments of this site, the most intensive anaerobic terminal organic carbon mineralization process À sulfate reduction and the highest concentration of hydrogen sulfide were also observed. Differences in the intensity of mineralization processes between sites suggest that the replacement of the riparian native species such as dominant A. glutinosa by invasive A. negundo with higher biodegradability leaves may induce local changes in organic matter processing in the littoral zone of the river. The increase of littoral bioproductivity in the accumulation zone of A. negundo leaf litter can occur due to the inflow of available organic matter and its intensive mineralization.Keywords: leaf litter / benthic microorganisms / river Résumé -Influence de la litière d'Acer negundo invasif sur l'abondance et l'activité microbienne benthique dans la zone littorale d'une rivière en Lituanie. Les forêts riveraines sont connues comme source importante de matière organique allochtone entrant dans les écosystèmes aquatiques via les feuilles tombées. Cependant, la litière, en fonction de sa qualité, peut créer différentes conditions pour que les microorganismes benthiques fonctionnent dans la zone littorale des masses d'eau. Afin d'évaluer l'impact de l'Acer negundo invasif dans la zone d'eau littorale de la rivière Neris (Lituanie), nous avons procédé à des recherches physico-chimiques et microbiologiques dans les sédiments de trois sites différents de la rivière. Un site d'échantillonnage était proche de A. negundo riverain, un autre proche de l'emplacement d'Alnus glutinosa indigène et une troisième zone était près d'une rive sans végétation riveraine. Les contenus en nutriments dans les sédiments du littoral différaient entre les sites d'accumulation de déchets de feuilles d'arbres envahissants et natifs, bien qu'ils ne soient pas toujours significativement différents. Les densités microbiennes les plus élevées ainsi que l'activité respiratoire de la communauté benthique (exprimée en taux de minéral...

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Effects of pine plantations on structural and functional attributes of forested streams

Cited by 39 publications

References 57 publications

In-stream litter decomposition along an altitudinal gradient: does substrate quality matter?

In-stream litter decomposition along an altitudinal gradient: does substrate quality matter?

Pine afforestation changes more strongly community structure than ecosystem functioning in grassland mountain streams

Influence of invasiveAcer negundoleaf litter on benthic microbial abundance and activity in the littoral zone of a temperate river in Lithuania

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