Biology, ecology, and management of starry stonewort (Nitellopsis obtusa; Characeae): A Red-listed Eurasian green alga invasive in North America

Larkin, Daniel J.; Monfils, Anna; Boissezon, Aurélie; Sleith, Robin S.; Skawinski, Paul M.; Welling, Charles H.; Cahill, Blake; Karol, Kenneth G.

doi:10.1016/j.aquabot.2018.04.003

Cited by 47 publications

(64 citation statements)

References 91 publications

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“…In particular, the presence of stands built by Ceratophyllum demersum, Ceratophyllum submersum, and charoids was of significant importance. Stoneworts as a group, despite the varying tolerance between certain species, are very sensitive to water quality and often maintain the stabilization of a clear-water state [41,42]. Therefore, the occurrence of charoids was associated with LowHI ponds and their presence positively influenced the diversity increase of zooplankton.…”

Section: Discussionmentioning

confidence: 99%

Response of Zooplankton Indices to Anthropogenic Pressure in the Catchment of Field Ponds

Kuczyńska‐Kippen

2020

Water

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As methods for assessing the environmental conditions in ponds are still not well developed, I studied zooplankton to identify a response of community indices to abiotic, biotic, and habitat type in two types of ponds differing in the level of human stress. Ponds of low human alterations (LowHI) harbored generally richer communities and a higher share littoral zooplankton, whose occurrence was associated with higher water transparency and complex macrophyte habitat, particularly the presence of hornworts and charoids. In high human-impact ponds (HighHI) planktonic communities prevailed. Their distribution was mainly related to the open water area and fish presence. Anthropogenic disturbance was also reflected in the frequency of rare species, which were associated with LowHI ponds. Higher diversity of zooplankton increased the chance for rare species to occur. Despite the fact that the majority of rare species are littoral-associated, they had no prevalence towards a certain ecological type of plants, which suggests that any kind of plant cover, even macrophytes typical for eutrophic waters (e.g., Ceratophyllum demersum) will create a valuable habitat for conservation purposes. Thus, it is postulated that a complex and dense cover of submerged macrophytes ought to be maintained in order to improve the ecological value of small water bodies.

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Section: Discussionmentioning

confidence: 99%

Response of Zooplankton Indices to Anthropogenic Pressure in the Catchment of Field Ponds

Kuczyńska‐Kippen

2020

Water

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“…Midwood et al 2016, Larkin et al (2018), and Karol and Sleith (2017) unanimously reported that starry stonewort prefers lakes with high conductivity (225-300 uS/cm)(threshold). Additionally, Larkin and Karol's groups both reported a direct association of starry stonewort with high pH (8.0-9.2).…”

Section: Discussionmentioning

confidence: 99%

“…Current control methods for starry stonewort have had minimal impacts on established populations, and many treatment strategies' effectiveness is anecdotal (Larkin et al 2018;Hackett, Cahill, and Monfils 2017;Wisconsin DNR 2017). A review of some management techniques, including chemical and mechanical harvesting, follows.…”

Section: Management Options For Starry Stonewortmentioning

confidence: 99%

“…Chemical controls include copper-, diquat-and endothall-based algaecides, with some level of effect reported on starry stonewort at smaller scales in a single growing season (Aquatic Weed Control 2015; Glisson et al 2018;Larkin et al 2018). For example, aggressive chemical applications in June, July, and August in two Indiana lakes temporarily controlled starry stonewort for a season, but no method achieves longterm control, and starry stonewort populations are expanding (Aquatic Weed Control 2015).…”

Section: Chemical Controlmentioning

confidence: 99%

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Aligning research and management priorities for Nitellopsis obtusa (starry stonewort)

Pokrzywinski¹,

Getsinger²,

Steckart³

et al. 2020

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In 2018, the US Army Corps of Engineers and Washington and Waukesha Counties in Wisconsin hosted a workshop on the invasive macroalga starry stonewort (Nitellopsis obtusa). Leading water resource managers (agencies and commercial applicators), researchers, regulators, and other interested parties discussed issues surrounding starry stonewort invasions in the Great Lakes Region (GLR). Technical sessions presented information on current research, invasion monitoring, early detection, rapid-response efforts, and operational management activities. Research summaries included invasion in Lake Ontario, prediction of invasion risk in Minnesota and Wisconsin using water chemistry data, and bulbil efficacy and distribution modeling in New England. In addition, the workshop offered summaries of attempted chemical and mechanical control tactics. Following presentations on previous studies, workshop participants identified research and management priorities. Critical research gaps identified from this workshop include (a) better understanding of the biology, invasion ecology, and management of starry stonewort; a greater understanding of distribution and movement, especially in the Great Lakes basin; enhanced population monitoring, applied research, and management strategies; and increased technical cooperation across government, academia, industry, and nonprofit organizations. Conclusions from this meeting will help prioritize future efforts focused on the adaptive management of starry stonewort in the United States and Canada. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents.

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“…This is likely due to the morphological traits that allow charophytes and other submerged macrophytes to overcome low light conditions since stem elongation towards the water surface will help charophytes to retrieve light (Asaeda et al, 2007). Light limitation usually causes elongation of thalli in charophytes growing in deep waters, such as Lychnothamnus barbatus (Pelechaty et al, 2017), Nitellopsis obtusa (Larkin et al, 2018), and Chara fibrosa (Asaeda et al, 2007). However, we observed a decline in total shoot length of C. vulgaris in the treatments where brownification was elevated above +200% compared to the controls.…”

Section: Discussionmentioning

confidence: 99%

Charophytes collapse beyond a critical warming and brownification threshold in shallow lake systems

Choudhury

Urrutia‐Cordero

Zhang

et al. 2019

Science of The Total Environment

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Biology, ecology, and management of starry stonewort (Nitellopsis obtusa; Characeae): A Red-listed Eurasian green alga invasive in North America

Cited by 47 publications

References 91 publications

Response of Zooplankton Indices to Anthropogenic Pressure in the Catchment of Field Ponds

Response of Zooplankton Indices to Anthropogenic Pressure in the Catchment of Field Ponds

Aligning research and management priorities for Nitellopsis obtusa (starry stonewort)

Charophytes collapse beyond a critical warming and brownification threshold in shallow lake systems

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