Habitat Traits Associated with Mosquito Risk and Aquatic Diversity in Urban Wetlands

Hanford, Jayne; Webb, Cameron E.; Hochuli, Dieter F.

doi:10.1007/s13157-019-01133-2

Cited by 18 publications

(25 citation statements)

References 67 publications

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“…Adult mosquito assemblages did not differ between drained and undrained wetlands (pseudo F (1,40) = 1.34, p = .306, perm = 372), though assemblages did change over time as is routinely observed in temperate areas (pseudo F (3,40) = 12.0, p < .01, perm = 999) (e.g. Claflin & Webb, ; Hanford, Webb, et al, ).…”

Section: Resultsmentioning

confidence: 86%

“…Landscape‐level in situ experiments in urban wetland management are rare, and our research highlights that, despite their impaired ecological character, management of urban wetlands can impact non‐target species such as aquatic macroinvertebrates and larval mosquitoes. While these impacts are likely to vary geographically, and also between wetlands with different ecological characteristics (Hanford, Webb, et al, ), it is critical that abundance and diversity of mosquitoes are considered when evaluating potential management strategies, due to the potential nuisance biting and pathogen transmission impacts.…”

Section: Discussionmentioning

confidence: 99%

“…Macroinvertebrates were collected once each in January, March, April and May 2017. Collections were subsampled in the field using timed live‐picking based on new taxa discovery (Hanford, Webb, & Hochuli, ) and returned to the laboratory preserved in 70% ethanol for counting and identification using keys from Dean () and Hawking, Smith, LeBusque, and Davey (). Macroinvertebrates were identified to the lowest practical taxonomic level, typically to genus.…”

Section: Methodsmentioning

confidence: 99%

“…Larval mosquitoes were sampled using a telescopic plastic ladle of approximately 300‐mL volume (Australian Entomological Supplies). Ten ‘dips’ were taken from each wetland in areas of aquatic vegetation or decaying plant matter likely to provide habitat for larvae (Hanford, Webb, et al, ).…”

Section: Methodsmentioning

confidence: 99%

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Management of urban wetlands for conservation can reduce aquatic biodiversity and increase mosquito risk

Hanford

Webb

Hochuli

2020

Journal of Applied Ecology

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Global wetland loss means constructed urban wetlands are an increasingly valuable resource for conservation. However, priorities for managing urban wetlands for conservation are often seen to conflict with management to reduce potential mosquito risks, such as nuisance biting and pathogen transmission. Understanding the ecological consequences of wetland management practices is vital to maximize the conservation value of urban wetlands without negatively impacting public health; however, management practices are often untested. We conducted a landscape‐scale experiment to test the ecological impacts of an existing urban wetland management regime, in which a group of urban wetlands are drained annually to reduce the abundance of an invasive fish, the plague minnow Gambusia holbrooki, and then refilled to provide breeding habitat for a threatened frog, the green and golden bell frog Litoria aurea. We collected and compared aquatic macroinvertebrates and mosquito larvae from these refilled wetlands, and adjacent undrained wetlands, as well as sampling adult mosquito populations on four occasions across summer and autumn. Wetland draining had a significant effect on aquatic macroinvertebrates and larval mosquitoes. Twice as many macroinvertebrates were collected from drained wetlands compared to undrained wetlands, and almost all mosquito larvae were collected from drained wetlands. Differences in macroinvertebrate assemblages and larval mosquitoes at drained and undrained wetlands decreased over time, but total macroinvertebrate abundance and taxa richness did not. Synthesis and applications. While conserving threatened habitats and species is vitally important, our results highlight how wetland management practices can unintentionally impact non‐target species, and potentially public health. As constructed urban wetlands become more common, so too does the need for routine maintenance and management of threatened and invasive species. It is essential that future design and management of urban wetlands considers the impact mosquitoes might have on humans. Pre‐emptive action to control geographically relevant vectors of mosquito‐borne pathogens and nuisance biting species would reduce human exposure to mosquitoes and associated negative impacts, and increase positive conservation outcomes associated with urban wetlands.

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Section: Resultsmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Management of urban wetlands for conservation can reduce aquatic biodiversity and increase mosquito risk

Hanford

Webb

Hochuli

2020

Journal of Applied Ecology

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“…The first and second surveys of national wetland resources showed that China's wetland area decreased by 339.63 million hm 2 in past decades, with overall and annual reduction rates of 8.82% and 0.92%, respectively (Wu et al 2018). Given this context, as an effective way to protect urban wetland resources without hindering artificial construction, wetland parks are developing rapidly (Mitsch and Day 2006;Hanford et al 2019). In the Pearl River Delta, located in the central part of Guangdong Province, China (Fig.…”

Section: Introductionmentioning

confidence: 99%

An Effective Method for Wetland Park Health Assessment: a Case Study of the Guangdong Xinhui National Wetland Park in the Pearl River Delta, China

et al. 2021

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The Guangdong Xinhui National Wetland Park (GXNWP) in the Pearl River Delta is an important stopover for migratory birds in China and East Asia. Due to high levels of interference, high sensitivity and fragile environmental constraints, an efficient method to assess the health status of wetland parks such as the GXNWP is urgently needed for sustainable development. In this study, we proposed a habitat-landscape-service (HLS) conceptual model that can be used at the site scale to evaluate health status in terms of habitats, landscapes and services by considering the complex ecosystem of wetland parks. This HLS model included 28 evaluation indicators, and the indicator weights and health-grade divisions were based on expert scores using both the analytic hierarchy process (AHP) and fuzzy comprehension evaluation (FCE) methods. The results showed that the health status of the GXNWP was at the “subhealthy” level, with a membership function of 0.4643. This study found that habitat indicators (0.5715) were the key factors affecting the GXNWP health status, followed by service indicators (0.2856) and landscape indicators (0.1429). The HLS-AHP-FCE method provides a holistic health evaluation indicator system and diagnostic approach for rapidly developing wetland parks in the Pearl River Delta, China.

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Mosquitoes associated with an urban estuary and implications for the management of pest and public health risks in Sydney, Australia

Sahar

Hess

Hanford

et al. 2021

Wetlands Ecol Manage

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Habitat Traits Associated with Mosquito Risk and Aquatic Diversity in Urban Wetlands

Cited by 18 publications

References 67 publications

Management of urban wetlands for conservation can reduce aquatic biodiversity and increase mosquito risk

Management of urban wetlands for conservation can reduce aquatic biodiversity and increase mosquito risk

An Effective Method for Wetland Park Health Assessment: a Case Study of the Guangdong Xinhui National Wetland Park in the Pearl River Delta, China

Mosquitoes associated with an urban estuary and implications for the management of pest and public health risks in Sydney, Australia

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