Phosphorus storage and mobilization in coastal Phragmites wetlands: Influence of local-scale hydrodynamics

Karstens, Svenja; Buczko, Uwe; Glatzel, Stephan

doi:10.1016/j.ecss.2015.07.014

Cited by 42 publications

(15 citation statements)

References 39 publications

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“…Opposite from the nitrogen pattern, TP and SRP decreased along the Yarlung Tsangpo River, and this decrease is linked to the velocity conditions (confirmed by Spearman’s rank correlation test). As the velocity at the upstream sites was relatively high, the release of phosphorus from the sediment to the water was enhanced 43 , 44 , resulting in the high concentrations in upstream areas. At the midstream sites, TP exhibited a sharp increase while the SRP concentration remained constant, indicating that the majority of the phosphorus emission were in the organic form.…”

Section: Discussionmentioning

confidence: 99%

Shift in bacterioplankton diversity and structure: Influence of anthropogenic disturbances along the Yarlung Tsangpo River on the Tibetan Plateau, China

Wang

et al. 2017

Sci Rep

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River systems have critical roles in the natural water environment and the transportation of nutrients. Anthropogenic activities, including wastewater discharge and river damming, raise adverse impacts on ecosystem and continuum of rivers. An increasing amount of attention has been paid to riverine bacterioplankton as they make vital contributions to biogeochemical nutrient cycle. A comprehensive study was conducted on the bacterioplankton community along the Yarlung Tsangpo River, which is the longest plateau river in China and is suffering from various anthropogenic impacts. The results indicated that nutrient variations corresponded to anthropogenic activities, and silica, nitrogen and phosphorus were retained by the dam. River damming influenced the biomass and diversity of the bacterioplankton, but significant alterations in the community structure were not observed between upstream and downstream of the dam. Moreover, the spatial distribution of the bacterioplankton community changed gradually along the river, and the dominant bacterioplankton in the upstream, midstream and downstream portions of the river were Firmicutes, Bacteroidetes and Proteobacteria, respectively. Soluble reactive phosphorus, elevation, ammonium nitrogen, velocity and turbidity were the main environmental factors that shape the bacterioplankton community. Our study offers the first insights into the variation of a bacterioplankton community of a large river in plateau region.

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Section: Discussionmentioning

confidence: 99%

Shift in bacterioplankton diversity and structure: Influence of anthropogenic disturbances along the Yarlung Tsangpo River on the Tibetan Plateau, China

Wang

et al. 2017

Sci Rep

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“…These broader temperature acclimation may help to permanently introduce G. tigrinus within the Baltic Sea, as sea surface temperature there are already higher, then in other ocean parts (Reusch et al 2018). Furthermore, endurance of sub-oxic conditions is an advantage in eutrophic coastal waters of the Baltic, as redox conditions within the reed belt can change fast (Karstens et al 2015), and an increase of nutrients is challenging submerged macrophytes in the coastal water bodies of the southern Baltic Sea (Paar et al 2021), stressing habitats of native gammarids. Contrary, an in silico study assumed that G. tigrinus has actually a narrower niche than native gammarids in the norther Baltic (Herkül et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Desalination and temperature increase will shift seasonal grazing patterns of invasiveGammarus tigrinuson charophytes

Berthold¹,

Porsche²,

Hofmann³

et al. 2021

Preprint

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Charophytes are a refuge for zooplankton and stabilize sediments, but they are also a food source for various animal species (water birds, fishes, invertebrates). This grazing pressure may be an important factor prohibiting macrophyte re-colonization in eutrophic coastal waters. Especially the introduction of new species, like Gammarus tigrinus, into the Baltic Sea led to yet not understood changes in the food web. Furthermore, the occurrence of native and invasive species is determined by their capacity to acclimatize to changing abiotic factors. In this study we investigated the influence of temperature and salinity on the grazing pressure of Gammarus tigrinus on two charophyte species: Chara tomentosa and Chara aspera. The grazing experiments were conducted in a full factorial design with the factors salinity (3 – 13 PSU), temperature (5 – 30 °C), and charophyte species. Grazing rates were determined as mass deviation within 48 hours considering simultaneous growth of the charophytes. Experimental results were further used to determine gross macrophyte biomass within the ecosystem, using field data. Gammarids preferred C. aspera before C. tomentosa, but both were grazed within their respective growth optima. The potential grazing peak of 24 °C is not yet reached in these coastal waters. Furthermore, calculation of gross production revealed that macrophytes could show up to 60% and 15% more biomass without grazing in deeper light-limiting, and shallow, not light limited water depths, respectively. The impact of food web on coastal water restoration should therefore be equally considered, as the nutrient control.

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“…The low light availability hampers the growth of submerged macrophytes and resulted in a regime shift from a macrophyte dominated system to a phytoplankton dominated one (Duarte et al, 2009). This is further enhanced by the hysteresis effect (Scheffer, 2009), as macrophytes are missing to stabilize the sediments (Karstens et al, 2015) and to reduce the resuspension, resulting in a further lowered water transparency. Berthold et al (2018) combined nutrient concentrations and phytoplankton biomass in several coastal waters of the southern Baltic Sea and emphasized the importance of hysteresis and resilience factors when reversing eutrophication, concluding that the pure reduction of nutrient loads will not be sufficient to reach the GES thresholds.…”

Section: Discussionmentioning

confidence: 99%

Managing Eutrophication in the Szczecin (Oder) Lagoon-Development, Present State and Future Perspectives

et al. 2019

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Phosphorus storage and mobilization in coastal Phragmites wetlands: Influence of local-scale hydrodynamics

Cited by 42 publications

References 39 publications

Shift in bacterioplankton diversity and structure: Influence of anthropogenic disturbances along the Yarlung Tsangpo River on the Tibetan Plateau, China

Shift in bacterioplankton diversity and structure: Influence of anthropogenic disturbances along the Yarlung Tsangpo River on the Tibetan Plateau, China

Desalination and temperature increase will shift seasonal grazing patterns of invasiveGammarus tigrinuson charophytes

Managing Eutrophication in the Szczecin (Oder) Lagoon-Development, Present State and Future Perspectives

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