Promoting invasive species control and eradication in the sea: Options for managing the tunicate invader Didemnum vexillum in Sitka, Alaska

McCann, Linda; Holzer, Kimberly K.; Davidson, Ian; Ashton, Gail; Chapman, Marnie D.; Ruiz, Gregory M.

doi:10.1016/j.marpolbul.2013.10.011

Cited by 17 publications

(10 citation statements)

References 27 publications

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“…Photographic methods performed best with easily recognizable species, including many of interest to scientists and managers (e.g., colonial tunicates of the family Didemnidae; Valentine et al, 2009;McCann et al, 2013;Ojaveer et al, 2015). Target taxa examined in this study showed that presence/absence trends follow the same pattern between photos and live analyses, and every species was found in photographs, though each species was detected less frequently from photos than from live analyses.…”

Section: Species Compositionmentioning

confidence: 61%

Evaluating Performance of Photographs for Marine Citizen Science Applications

et al. 2019

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Long-term measurements are imperative to detect, understand, and predict changes in coastal biological communities, but can be both costly and difficult to implement. Here, we compare measurement methods used to document community structure and assess changes in marine systems, and explore potential applications in citizen science. The use of photographs for species identifications and monitoring has become a popular and useful data collection tool, but its use requires evaluation of its effectiveness in comparison to data collected from live examinations. We used settlement panels in San Francisco Bay, a well-studied and vital coastal ecosystem, to compare standardized measures of the invertebrate fouling community through examination of live organisms in the field and via photographs. Overall, our study found that live measurements were more accurate and better represented these marine communities, having higher richness, and diversity measurements than photographic measurements. However, photographic analyses accurately captured the relative abundances of some species and functional groups. We suggest that highly recognizable target taxa or broad scale comparisons of functional group composition are easily tracked through photographs and offer the best potential for research conducted by citizen scientists.

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Section: Species Compositionmentioning

confidence: 61%

Evaluating Performance of Photographs for Marine Citizen Science Applications

et al. 2019

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“…Collectively, though 5 and 10 min exposure reduced biofouling significantly, our finding suggests that 2 min exposure to acetic acid deployed in 3 m depth is best for reducing biofouling, with high survival rate in field experiment. Two-min exposure to 4% acetic acid resulted in 100% mortality of Didemnum vexillum (Mccann et al, 2013). It is suggested that refinement in either exposure time-scale or concentration of acetic acid could significantly decrease fouling biomass in farmed pearl oyster.…”

Section: Discussionmentioning

confidence: 99%

Effect of Acetic acid treatment on the control of non-indigenous ascidians in farmed Indian pearl oyster Pinctada fucata

Chinnadurai¹,

Jagadis²,

Meenakshi³

et al. 2018

J.Mar.Biol.Ass.India

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Control of biofouling has been one of the major challenges in pearl culture. Field experiments were performed to control the biofouling in farmed pearl oyster Pinctada fucata by treating the oysters first with 5% acetic acid at different time interval (2, 5, 10 min) and then kept for evaluation at three depths (1, 3, 5 m). The average total fouling biomass on oysters exposed for 2, 5, 10 min were 7.35, 6.97 and 6.49 g/oyster/month respectively, while control showed 10.56 g/oyster/month on completion of four months. Mortality of oysters were 60, 29, 14% at 10, 5 and 2 min exposure and control had only 7%. There was significant differences in total fouling biomass and mortality between the control and treatments (p<0.001). Results suggest that 2 min exposure of oysters in acetic acid and deployed at a depth of 3 m was found to be best for reducing biofouling as well as more effective in preventing the settlement of non-indigenous ascidians, especially Didemnum sp. The outcome of the present study may contribute to further optimise the current antifouling managements in pearl culture and fill the knowledge gap for farming practices and their management specifically with reference to the monitoring and cleaning procedures.

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“…When funding was initially unavailable to undertake response actions, community leaders lobbied decision makers to include funding in agency budgets. Locals volunteered to assist with cleanup efforts, research projects (McCann et al, 2013), and surveys. They reported observations of organisms thought to be D. vexillum.…”

Section: Detecting and Responding To A Marine Invasive Speciesmentioning

confidence: 99%

“…Because the Whiting Harbor D. vexillum is the only known infestation in the Arctic, the patchy distribution established on submerged debris and the seabed posed a high level of concern for future spread to new areas in Sitka Sound. State and federal management agencies collaborated with the Smithsonian Environmental Research Center (SERC), Marine Invasion Lab to investigate the feasibility of controlling D. vexillum in Alaska (McCann et al, 2013).…”

Section: Detecting and Responding To A Marine Invasive Speciesmentioning

confidence: 99%

Harnessing the Power of Community Science to Address Data Gaps in Arctic Observing: Invasive Species in Alaska as Case Examples

Schwoerer¹,

Spellman²,

Davis³

et al. 2021

ARCTIC

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The Arctic is undergoing large-scale changes that are likely to accelerate in future decades such as introductions and expansions of invasive species. The Arctic is in a unique position to prevent new introductions and spread of existing invasive species by adopting policies and actions aimed at early detection. Responding to threats from invasive species to minimize impacts to ecosystems, communities, food security, and northern economies will necessitate extensive observations and monitoring, but resource managers often face decisions without having adequate data and resources at hand. Local observing programs such as citizen science and community-based monitoring programs present attractive methods for increasing observing capacity that span contributory and co-created approaches while raising awareness of an issue among stakeholders. While the co-created model has been widely applied and encouraged in the Arctic context, contributory citizen science programs offer an additional tool for addressing observing needs in the Arctic. We showcase three contributory citizen science programs related to freshwater, terrestrial, and marine environments that have supported the objectives of the Alaska Invasive Species Partnership. We discuss criteria for achieving ARIAS priority actions at the participant scale related to participants’ motivation and participants’ understanding of the value of their contributions, at the programmatic scale, for example promoting accessible, reciprocal, and transparent knowledge exchange, and at the policy and science scale where management action is data driven. The approach is aimed at successful integration of citizen science into Arctic policy making. Finally, we discuss challenges related to broader global data collection and future directions for contributory citizen science within Arctic observing networks.

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Promoting invasive species control and eradication in the sea: Options for managing the tunicate invader Didemnum vexillum in Sitka, Alaska

Cited by 17 publications

References 27 publications

Evaluating Performance of Photographs for Marine Citizen Science Applications

Evaluating Performance of Photographs for Marine Citizen Science Applications

Effect of Acetic acid treatment on the control of non-indigenous ascidians in farmed Indian pearl oyster Pinctada fucata

Harnessing the Power of Community Science to Address Data Gaps in Arctic Observing: Invasive Species in Alaska as Case Examples

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