Survival of a submerged aquatic weed (<i>Egeria densa</i>) during lake drawdown within mounds of stranded vegetation

Dugdale, Tony M.; Clements, Daniel; Hunt, Trevor D.; Butler, K. L.

doi:10.1080/07438141.2012.678928

Cited by 14 publications

(7 citation statements)

References 8 publications

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“…Drawdowns have effects on plant diversity because different species tolerate different water levels (Keddy & Fraser, ; Riis & Hawes, ), due to the intrinsic ability of species to tolerate dewatering (Bunn & Arthington, ; Holmes, ). Dugdale, Clements, Hunt, and Butler () found that exposure of E . densa to desiccation decreases the amount of plant material.…”

Section: Discussionmentioning

confidence: 99%

Use of native macrophytes for recovery of the habitat structure and complexity of a lowland stream affected by river engineering works: Implications for management

Paz

Gelis

Licursi

et al. 2018

River Research & Apps

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Macrophytes were transplanted into a lowland stream affected by river engineering works. The aim was to analyse the feasibility of their reintroduction and potential to be used for the recovery of the structure and complexity of the lotic habitat. Macrophytes contribute heterogeneity to streams, modify the current velocity, affect sediment and nutrients dynamics, and provide a substrate for epiphytic biofilm. We transplanted specimens of Ludwigia peploides, Gymnocoronis spilanthoides, and Egeria densa into a stream located in the Pampean plain (Buenos Aires, Argentina). The growth and coverage of the transplanted macrophytes and the changes in the structure of the epiphytic biofilm were assessed. The results show that specimens of G. spilanthoides were negatively affected by the transplant and new conditions, E. densa decreased its coverage after the transplant, and L. peploides endured the transplant and adapted to the dredging site with successful establishment and expansion. There were no significant differences between the biofilm developed in L. peploides and G. spilanthoides. Additionally, the biofilm had similar features between the transplanted macrophytes and those from a site with no dredging. Considering this result, the selection between these macrophytes in relation to biofilm production is indifferent. However, as L. peploides adapts better to the new conditions generated by the river engineering works, its use in the rehabilitation project is recommended.Moreover, it is important to consider the ability of different species of macrophytes to survive the transplant and grow under new environmental conditions in order to include them in rehabilitation projects.

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Section: Discussionmentioning

confidence: 99%

Use of native macrophytes for recovery of the habitat structure and complexity of a lowland stream affected by river engineering works: Implications for management

Paz

Gelis

Licursi

et al. 2018

River Research & Apps

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“…In all parts of the world, the general practices of managing aquatic weeds are categorized into four main areas: biological control, chemical control, mechanical control, and physical control [ 24 , 25 ]. However, there are some other methods, such as the drawdown technique, which are mainly used along with mechanical and physical control methods [ 5 ].…”

Section: Aquatic Weedsmentioning

confidence: 99%

“…Negative effects of aquatic weeds not only affect irrigation channels but a wide variety of other natural and man-made aquatic habitats, like lakes [ 5 , 6 , 7 ], ponds [ 8 ], rivers [ 9 , 10 , 11 , 12 ], reservoirs [ 13 ], and coastal lagoons [ 14 ]. The spread of aquatic weeds can significantly impact various commercial activities.…”

Section: Introductionmentioning

confidence: 99%

Nonchemical Aquatic Weed Control Methods: Exploring the Efficacy of UV-C Radiation as a Novel Weed Control Tool

Udugamasuriyage,

Kahandawa,

Tennakoon

2024

Plants

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Aquatic weeds, including invasive species, are a worldwide problem. The presence of aquatic weeds poses several critical issues, such as hindering the continuous flow of water in irrigation channels and preventing the proper distribution of adequate water quantities. Therefore, effective control measures are vital for agriculture and numerous downstream industries. Numerous methods for controlling aquatic weeds have emerged over time, with herbicide application being a widely used established method of weed management, although it imposes significant environmental risks. Therefore, it is important to explore nonchemical alternative methods to control existing and emerging aquatic weeds, potentially posing fewer environmental hazards compared with conventional chemical methods. In this review, we focus on nonchemical methods, encompassing mechanical, physical, biological, and other alternative approaches. We primarily evaluated the different nonchemical control methods discussed in this review based on two main criteria: (1) efficiency in alleviating aquatic weed problems in location-specified scenarios and (2) impacts on the environment, as well as potential health and safety risks. We compared the nonchemical treatments with the UV-C-radiation-mediated aquatic weed control method, which is considered a potential novel technique. Since there is limited published literature available on the application of UV-C radiation used exclusively for aquatic weed control, our review is based on previous reports of UV-C radiation used to successfully control terrestrial weeds and algal populations. In order to compare the mechanisms involved with nonchemical weed control methods, we reviewed respective pathways leading to plant cell death, plant growth inhibition, and diminishing reemergence to justify the potential use of UV-C treatment in aquatic habitats as a viable novel source for aquatic weed control.

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“…Invasive aquatic plants constitute a major problem in many freshwater systems (Dugdale et al 2012), being able to affect both biodiversity and ecosystem functioning (Clayton and Edwards 2006).…”

Section: Introductionmentioning

confidence: 99%

Effect of density and neighbours on interactions between invasive plants of similar growth form

Silveira

Thiébaut

2020

Aquat Ecol

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Invasive aquatic plants constitute a great problem in many freshwater systems. Although many studies have addressed the potential threats of invasion by exotic species in aquatic ecosystems, few studies have considered the interactions (competition, facilitation, coexistence) between exotic aquatic plants of similar growth form in invaded communities. Our aim was to investigate experimentally the effect of density in monocultures and the effect of neighbour identity and plant density on a focal species in mixed cultures. We used Elodea canadensis, Egeria densa and Lagarosiphon major as model species and conducted two experiments, one in a monoculture and another in a mixed culture following an additive design. Individuals were planted in pots with several treatments based on the identity and density of neighbour species. Our results demonstrated that the development of an invasive submerged plant could be influenced either positively (facilitation) or negatively (competition or inhibition) by the presence of more than one neighbour species of different densities. An increase in density significantly stimulated competition intensity, although the effect of density on the performance of the invader also depended on neighbour identity. A facilitative effect of E. canadensis on the apical growth of E. densa was established. However, despite these results, the competitive outcome also depended on other environmental factors (e.g. underwater radiation) and not on plant density and neighbour identity alone.

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Survival of a submerged aquatic weed (Egeria densa) during lake drawdown within mounds of stranded vegetation

Cited by 14 publications

References 8 publications

Use of native macrophytes for recovery of the habitat structure and complexity of a lowland stream affected by river engineering works: Implications for management

Use of native macrophytes for recovery of the habitat structure and complexity of a lowland stream affected by river engineering works: Implications for management

Nonchemical Aquatic Weed Control Methods: Exploring the Efficacy of UV-C Radiation as a Novel Weed Control Tool

Effect of density and neighbours on interactions between invasive plants of similar growth form

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