Studies on decomposition of two species of Salvina

Sharma, Kanta Prasad; Goel, Pooja

doi:10.1007/bf00008324

Cited by 15 publications

(4 citation statements)

References 9 publications

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“…indicated that nutrient release was rapid during the initial four days and was attributed to physical leaching (Ogwada et al 1984;Sharma and Goel 1986;Asaeda and Nam 2002). This was followed by slow nutrient release attributed to microbial decomposition.…”

Section: Introductionmentioning

confidence: 95%

Decomposition of dominant submerged macrophytes: implications for nutrient release in Myall Lake, NSW, Australia

Shilla

Asaeda

Fujino

et al. 2006

Wetlands Ecol Manage

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Breakdown and nutrient dynamics of submerged macrophytes were studied in Myall Lake, Australia. Mass loss of Myriophyllum sulsagineum was the lowest (64.90%) among the studied macrophytes during the 322 days followed by charophytes (60.79%), whereas Najas marina and Vallisneria gigantea lost 91.15 and 86.02% of their respective initial mass during that time. The overall exponential breakdown rates of Najas marina and Vallisneria gigantea were similar, with k-values of 0.24 and 0.23 day À1 , respectively. These rates were significantly higher than the break down rates of charophytes (0.007 day À1 ) and M. sulsagineum (0.008 day À1 ). During growth phase, water column depicted lower nutrient concentrations while during decay period, significant increase in water column nutrients resulted. Release of nutrients from decomposing macrophytes and incorporation of these nutrients into sedimentary phase as well as uptake of nutrients by the growing macrophytes, can present a considerable cycling pathway of nutrients in Myall lake system. The results of this study suggest that different submerged macrophytes may differ appreciably in quality and may exhibit different decomposition rates, patterns and nutrient dynamics in aquatic ecosystems in general, and Myall lakes in particular.

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Section: Introductionmentioning

confidence: 95%

Decomposition of dominant submerged macrophytes: implications for nutrient release in Myall Lake, NSW, Australia

Shilla

Asaeda

Fujino

et al. 2006

Wetlands Ecol Manage

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“…The decomposition of macrophytes is a complex process that is facilitated by microorganisms and invertebrates, and the action of these organisms starts the process of carbon and nutrient assimilation in food webs (Varga, 2003). Previous studies indicate that nutrient release is rapid during the initial 4 days of macrophyte decomposition due to physical leaching (Sharma and Goel, 1986; Asaeda and Nam, 2002), followed by a slower nutrient release phase due to microbial decomposition (Shilla et al ., 2006).…”

Section: Introductionmentioning

confidence: 98%

Interactions between bacteria and fungi in macrophyte leaf litter decomposition

Zhao

Xing

2020

Environmental Microbiology

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Summary Microbes play an important role in decomposition of macrophytes in shallow lakes, and the process can be greatly affected by bacteria–fungi interactions in response to material composition and environmental conditions. In this study, microbes involved in the decomposition of leaf litter from three macrophyte species, Zizania latifolia, Hydrilla verticillata and Nymphoides peltata, were analysed at temperatures of 5, 15 and 25 °C. Results indicate that the decomposition rate was affected by temperature. Bacterial alpha diversity increased significantly along the time, while both temperature and plant species had a significant impact on the bacterial community, and plant type was shown to be the most important driving factor for the fungal community. The cosmopolitan bacterial taxa affiliated with Gammaproteobacteria, Bacteroidetes, Deltaproteobacteria, Firmicutes and Spirochaetes were key species in the investigated ecological networks, demonstrating significant co‐occurrence or co‐exclusion relationships with Basidiomycota and Ascomycota, according to different macrophyte species. This study indicates that bacteria involved in the decomposition of macrophyte leaf litter are more sensitive to temperature variance, and that fungi have a higher specificity to the composition of plant materials. The nutrient content of Hydrilla verticillata promoted a positive bacteria–fungi interaction, thereby accelerating the decomposition and re‐circulation of leaf litter.

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“…The known detrimental environmental and economic impacts of S. molesta have caused it to be prohibited in the United States, and the U.S. Department of Agriculture has deemed it as one of the most noxious weeds in the country (Oliver 1993). The fast growth rate of S. molesta reduces the abundance of native plants as they compete for space and light (Sharma and Goel 1986). Additionally, slow decomposition rates reduce oxygen for young fish and other organisms (Hattingh 1961).…”

Section: Methodsmentioning

confidence: 99%

Invasion Risk in a Warmer World: Modeling Range Expansion and Habitat Preferences of Three Nonnative Aquatic Invasive Plants

Koncki¹,

Aronson²

2015

Invasive plant sci. manag.

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Biological invasions and climate change pose two of the most important challenges facing global biodiversity. Of particular importance are aquatic invasive plants, which have caused extensive economic and environmental impacts by drastically altering native biodiversity and ecosystem services of freshwater wetlands. Here, we used the maximum entropy model, Maxent, to model the potential range expansion of three nonnative aquatic invasive plants: alligatorweed, limnophila, and giant salvinia, throughout the continental United States under current, 2030 to 2059 (2040), and 2070 to 2099 (2080) climate scenarios. Maxent is a popular method to model predicted current and future species distributions based on biogeography and climate. Alligatorweed, limnophila, and giant salvinia are noxious invaders of freshwater habitats in the southeastern United States and cause economic and ecological loss. In addition, we analyzed each species' habitat preference based on wetland type, occurrence in man-made habitats, and distance to the nearest stream to better understand what future habitats are at risk and how these species spread. Our results show that in 2040 and 2080 climate scenarios, all three species have the potential to increase their range throughout the northeastern United States and as far as New York and Massachusetts. The spatial distribution of alligatorweed was primarily determined by precipitation of the warmest quarter (15.8%), limnophila was primarily determined by precipitation of the warmest quarter (52.2%) and mean temperature of the coldest quarter (21.8%), and giant salvinia was primarily determined by the mean temperature of the coldest quarter (24.3%). All three species were found significantly more frequently in lakes and ponds than in other freshwater habits. Giant salvinia was found significantly more often in man-made wetland habitats. In order to reduce the detrimental impacts of these species, land managers in the northeastern United States should concentrate early detection and rapid response management in lakes, ponds and man-made wetland habitats.

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Studies on decomposition of two species of Salvina

Cited by 15 publications

References 9 publications

Decomposition of dominant submerged macrophytes: implications for nutrient release in Myall Lake, NSW, Australia

Decomposition of dominant submerged macrophytes: implications for nutrient release in Myall Lake, NSW, Australia

Interactions between bacteria and fungi in macrophyte leaf litter decomposition

Invasion Risk in a Warmer World: Modeling Range Expansion and Habitat Preferences of Three Nonnative Aquatic Invasive Plants

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