On the use of macrophytes to maintain functionality of overgrown lowland lakes

Lawniczak-Malińska, Agnieszka E.; Achtenberg, Krzysztof

doi:10.1016/j.ecoleng.2018.02.003

Cited by 15 publications

(8 citation statements)

References 35 publications

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“…Generally, macrophyte cutting seems to favor charophytes, which is explained by the removal of shading tall macrophytes and was therefore recommended as a method to favor rare charophytes (Zinko 2017 [ 1 ]). In a Polish lake, Nitella mucronata increased after macrophyte harvesting, while tall macrophytes, especially Elodea canadensis , decreased (Lawniczak-Malinska and Achtenberg 2018 [ 197 ]). Similarly, Nitella mucronata increased in a Swedish lake after cutting of floating-leaved plants (Kyrkander and Örnborg 2015 [ 198 ]).…”

Section: Transplantations Of Threatened Charophytesmentioning

confidence: 99%

Re-Establishment Techniques and Transplantations of Charophytes to Support Threatened Species

Blindow

Carlsson

Weyer³

2021

Plants

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Re-establishment of submerged macrophytes and especially charophyte vegetation is a common aim in lake management. If revegetation does not happen spontaneously, transplantations may be a suitable option. Only rarely have transplantations been used as a tool to support threatened submerged macrophytes and, to a much lesser extent, charophytes. Such actions have to consider species-specific life strategies. K-strategists mainly inhabit permanent habitats, are perennial, have low fertility and poor dispersal ability, but are strong competitors and often form dense vegetation. R-strategists are annual species, inhabit shallow water and/or temporary habitats, and are richly fertile. They disperse easily but are weak competitors. While K-strategists easily can be planted as green biomass taken from another site, rare R-strategists often must be reproduced in cultures before they can be planted on-site. In Sweden, several charophyte species are extremely rare and fail to (re)establish, though apparently suitable habitats are available. Limited dispersal and/or lack of diaspore reservoirs are probable explanations. Transplantations are planned to secure the occurrences of these species in the country. This contribution reviews the knowledge on life forms, dispersal, establishment, and transplantations of submerged macrophytes with focus on charophytes and gives recommendations for the Swedish project.

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Section: Transplantations Of Threatened Charophytesmentioning

confidence: 99%

Re-Establishment Techniques and Transplantations of Charophytes to Support Threatened Species

Blindow

Carlsson

Weyer³

2021

Plants

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“…At present, there are a few research studies on the harvesting management of Trapa, and they mainly focus on the short-term (within 1 year) effects of reducing the nutrient load of water bodies (Galanti et al, 1990;Xu et al, 2014;Lawniczak and Achtenberg, 2018), lacking results of long-term monitoring of harvesting Trapa on water quality and the plants. These shortterm results showed that the harvesting of Trapa significantly reduced the concentrations of nitrogen and phosphorus in the water body, and promotes the growth of some subdominant aquatic plants.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Effects of the Harvesting of Trapa natans on Local Water Quality and Aquatic Macrophyte Community in Lake Erhai, China

Yuan

Bai

Zhu

et al. 2021

Front. Environ. Sci.

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Trapanatans is one of the main species causing the swamping in the littoral zones of Erhai Lake. It commonly forms a dense canopy on the water surface in the growing season (June–September), which hampers the local water quality and habitat of submerged macrophytes, and releases nutrients to the water after death in autumn and winter, resulting in the deterioration of local water quality. At present, there are many and positive research studies on the short-term effects of harvesting water chestnut on water quality and aquatic plants, but long-term observation results are lacking. In response to the above problems, we studied responses of water quality and aquatic plant community to the removal of Trapa in littoral zone of a northern bay in Erhai from August 2014 to January 2017. This could be the first attempt to discover the long-term effects of floating-leaved vegetation management in the freshwater ecosystem. The results showed that the artificial removal of Trapa significantly improved the local water quality in the growing season, for example, the concentrations of total nitrogen (TN), dissolved nitrogen (DN), total phosphorus (TP), and dissolved phosphorus (DP) in the non-Trapa zone (NTZ) were much lower than the concentrations of those in the adjacent Trapa zone (TZ). And the biomass of aquatic macrophyte community (BAMC) was significantly increased in the NTZ, up to the maximum value of about 21 kg/m2 in fresh weight. However, the diversity indexes of the community in the NTZ declined. Therefore, we suggested that although the removal of Trapa improved the water quality and increased the productivity of the submerged aquatic plant community, it reduced the species diversity of the aquatic plant community in the long run. This is another issue that we need to pay attention to in the later management in Erhai Lake.

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“…Small lakes are still a relatively poorly studied group of the water bodies (Izmailova et al, 2017;Lyashenko et al, 2002). They are most sensitive to climate change and are subject to large anthropogenic pressure (Belyakov and Garin, 2018;Izmailova et al, 2017;Lawniczak-Malińska and Achtenberg, 2018;Lobunicheva et al, 2013;Slukovskii et al, 2018;Strahovenko et al, 2014). The latter affects the species richness of macrophytes, which is closely related to the natural type and status of the water bodies (Mäemets et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

The current state and dynamics of the flora of several small lakes of the Yaroslavl Region, Russia

Belyakov¹,

Сахарова²,

Sokolova³

2020

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The phytoplankton and vascular aquatic plants have been studied in small lakes Vashutinskoe, Chashnitskoe, Ryumniki, and Zaozer’e, located in the southern part of the Yaroslavl Region, Russia. The taxonomic composition of phytoplankton comprised 137 species of algae belonging to 8 divisions, 18 orders, and 76 genera. The studied water bodies were characterized by high biomass of cyanobacteria. Aphanizomenon flos-aquae (L.) Ralfs ex Born et Flah. and the species of the genus Anabaena had a significant contribution to the phytoplankton biomass in the lakes Zaozer’e, Chashnitskoe, and Ryumniki, Limnothrix planctonica (Wołosz.) Meff. and Microcystis aeruginosa (Kütz.) Kütz, in the Lake Vashutinskoe. In terms of phytoplankton biomass, the pelagial and shallow areas of the Lake Vashutinskoe belonged to eutrophic reservoirs, of the Lake Ryumniki, to oligotrophic. The phytoplankton biomass in the pelagial zone of the lakes Chashnitskoe and Zaozer’e indicated the mesotrophic status of these water bodies, in the littoral zone, eutrophic. The study of the phytoplankton of the lakes was carried episodically and was often performed at different periods of the growing season. Therefore, the obtained data did not allow one to assess the direction of the successional changes in the algal flora. The flora of vascular plants of lakes was represented by 118 species belonging to 4 divisions, 5 classes, 22 orders, and 37 families. Thirty-four species were common to all studied water bodies. The differences in the The differences in the flora of vascular aquatic plantsof the studied lakes were associated with differences in their trophic status, the presence of various biotopes, the nature of anthropogenic load, and the degree of eutrophication. During a hundred years of observations, some species have disappeared, but some have appeared, including adventive species (such as Elodea canadensis Michx., Bidens frondosa L., Epilobium adenocaulon Hausskn, Zizania latifolia Griseb., and Juncus tenuis Willd.). The study of the current state of rare and protected species of vascular plants made it possible to reveal the eventual causes and period of disappearance of some species from the lakes. The taxonomic and ecological structure of phytoplankton and vascular plants of lakes was quite diverse and usual for the water bodies of the European part of Russia.

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On the use of macrophytes to maintain functionality of overgrown lowland lakes

Cited by 15 publications

References 35 publications

Re-Establishment Techniques and Transplantations of Charophytes to Support Threatened Species

Re-Establishment Techniques and Transplantations of Charophytes to Support Threatened Species

Long-Term Effects of the Harvesting of Trapa natans on Local Water Quality and Aquatic Macrophyte Community in Lake Erhai, China

The current state and dynamics of the flora of several small lakes of the Yaroslavl Region, Russia

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