Biomanipulation: a useful tool for freshwater wetland mitigation?

Angeler, David G.; Chow‐Fraser, Patricia; Hanson, Mark A.; Sánchez-Carrillo, Salvador; Zimmer, Kyle D.

doi:10.1046/j.1365-2427.2003.01156.x

Cited by 33 publications

(34 citation statements)

References 69 publications

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“…Causes for the decline of marsh vegetation in Cootes Paradise is well documented (Painter et al, 1989;Sager et al, 1998;Chow-Fraser, 1998;Lundholm & Simser, 1999;Chow-Fraser, 1999a;Angeler et al, 2003). Loss of emergent vegetation has been attributed to sustained high water levels over the past 30 years, while the disappearance of submergent vegetation is thought to be due to poor light penetration that is assumed to be limiting germination and growth of seedlings and propagules.…”

Section: Description Of Study Site and The Remedial Action Planmentioning

confidence: 99%

Ecosystem response to changes in water level of Lake Ontario marshes: lessons from the restoration of Cootes Paradise Marsh

Chow‐Fraser

2005

Hydrobiologia

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A general understanding of how aquatic vegetation responds to water-level fluctuations is needed to guide restoration of Great Lakes coastal wetlands because inter-annual and seasonal variations often confound effects of costly remedial actions. In 1997, common carp (Cyprinus carpio) was removed from Cootes Paradise Marsh (L. Ontario) to reduce sediment resuspension and bioturbation, and thus regenerate marsh plants that had declined dramatically since the 1930s. Data from 1934 to 1993 were re-assembled from the literature to relate percentage cover of emergent vegetation to mean summer water level. A non-linear regression equation explained close to 90% of the variation compared with 80% for a non-linear equation, and this trend was confirmed for the dominant species, Typha latifolia. A modest recovery of emergent vegetation in 1999 following carp exclusion could have been predicted from declining water level alone, without invoking any effects of the biomanipulation. An unusually cool spring in 1997 delayed the migration of spawning planktivores into the marsh. This resulted in a grazer-mediated clear-water phase that coincided with a resurgence of the submersed aquatic vegetation (SAV) community in 1997, which declined again in 1999 when low water levels occurred. Even though decrease in water level was significantly related to increased suspended solids and greater light attenuation, light conditions appeared to have been adequate in marsh embayments to support SAV growth, according to a published relationship between maximum depth of SAV colonization and light extinction coefficient. I suggest that wave disturbance and propagule burial associated with shallow water depths may have been the main reasons for the decline of the SAV in 1999 and 2000.

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Section: Description Of Study Site and The Remedial Action Planmentioning

confidence: 99%

Ecosystem response to changes in water level of Lake Ontario marshes: lessons from the restoration of Cootes Paradise Marsh

Chow‐Fraser

2005

Hydrobiologia

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“…After nutrient reduction, Jeppesen et al (2005) found a natural response of fish community structure and biomass within 10 years. The stocking of piscivorous fish or removal of zooplanktivores and benthivores can greatly reduce turbidity and the destruction of submerged macrophytes, generating immediate results (Angeler et al 2003;Hilt et al 2006;Genkai-Kato et al 2012;Bakker et al 2013;Pot and ter Heerdt 2014). At least 75 % of the fish remnants of the turbid state should be reduced to obtain clear waters (Meijer 2000).…”

Section: Food Webmentioning

confidence: 99%

How to combat cyanobacterial blooms: strategy toward preventive lake restoration and reactive control measures

Stroom

Kardinaal

2016

Aquat Ecol

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Water managers worldwide are facing the serious problem of dense blooms of cyanobacteria in surface waters. In the quest for the optimal method to combat cyanobacterial dominance, many questions and many possible solutions arise. This paper presents a three-phase strategy to fight harmful cyanobacterial proliferation. Water managers who apply this strategy can generate a tailor-made set of measures. The three phases consist of (1) defining the ecological water quality targets of the waterbody in question, (2) assessing its current ecological state, and (3) selecting which measures will yield optimal results. The paper provides assistance in the quantitative diagnosis of the state of both shallow and deep temperate freshwater lakes by means of a lake system analysis, and presents a survey of measures. Measures are divided into two sets. Preventive measures are based on switching to a clear state (shallow lake) or reducing the overall cyanobacterial biomass (deep lake). They are subdivided into nutrient reduction, hydromorphological adjustments, and food web management. Concerning nutrient reduction, in many situations phosphorus management alone should suffice. Nitrogen management can be important to increase the species diversity of macrophytes, or to relieve downstream (marine) consequences. Control measures (including mitigation) have a direct impact on cyanobacterial blooms by biomass removal, flushing, or mixing; however, the number of proven technologies is limited.

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“…Benndorf et al (2002) have provided a useful review of lake criteria for biomanipulation, and managers are directed particularly to practical guides (Moss et al 1996) and relevant research papers Holzer et al 1997b;Matveev 1998;Xie and Liu 2001;Benndorf et al 2002;Lathrop et al 2002;Tomlinson et al 2002;Angeler et al 2003;Lauridsen et al 2003;Mehner et al 2004;Jeppesen et al 2005) that are available to assist wetland managers in making decisions on shallow lake restorations.…”

Section: Sum Of Experiencementioning

confidence: 99%