•Most publications reviewed fail to define what is meant by the term greenspace.•Of those that do provide a definition, six different definition types are identified.•Two broad interpretations are ...used: a) greenspace as synonomous with nature; and.•b) greenspace as explicitly urban vegetation.•Recommend a definition is required that is both qualitative and quantitative.
Greenspace research has been driven by an emerging interest in the impact that biodiversity and ecosystem function has on life in urban areas. Studies from multiple disciplines across the life, physical and social sciences investigate the interactions with or within greenspace, creating a wide range of potentially related, but disparate findings. In order to understand whether these unconnected findings might be integrated, it is important to be able to make comparisons and build meta-analyses. In a review of journal articles about greenspace, we found that less than half of the 125 journal articles reviewed defined what greenspace was in their study; although many articles implied a definition. In those that provided a definition, we identified two overarching interpretations of greenspace using six different definition types. Perhaps arising from how the term has been lexicalized, this suggests that researchers do not have the same understanding of greenspace and limits the ability of researchers to draw meaning from multiple contexts or create syntheses. Rather than suggest a single, prescriptive understanding of greenspace, we propose that researchers construct a definition of greenspace for the context of their research that utilises both qualitative and quantitative aspects.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK, ZRSKP
Global conservation is increasingly reliant on young people forming meaningful connections with urban nature. However, interactions with nearby nature do not inspire all children and adolescents ...living in cities to act pro-environmentally. Our survey of over 1,000 school students from Sydney, Australia, revealed that 28% of respondents maintained strong nature connections. Younger students (aged 8–11) were more strongly connected with nature than their older peers (aged 12–14), and environmental behaviors were negatively associated with increasing age. Differences between boys and girls were less consistent, resulting in part from differential functioning of questionnaire items. Regardless, girls were more willing than boys to volunteer for conservation. Our findings suggest that policies designed to strengthen urban children’s nature connections will be most effective if they explicitly address the “adolescent dip” and other emerging demographic patterns, thereby ensuring all young people reap the health, wellbeing, and conservation benefits of connecting with nature.
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DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Cities concentrate risks and the adverse effects of dense populations, such as outdoor air pollution, chronic disease and the impact of extreme weather events. Governments and planning bodies ...struggle to heed and apply the abundance of unintegrated research that links aspects of the urban environment with urban residents’ wellbeing. In order to promote human wellbeing in cities, a number of key features of the urban environment should be promoted. The medical science, urban ecology and urban design research already recognises the importance of some aspects, including providing walkable spaces, community space and greenspace. We argue that in practice, the provision of these three features is insufficient for human wellbeing. Emerging research demonstrates the importance of biodiversity and ecosystem functions to wellbeing. This paper outlines the concept of wellbeing and provides a summary of the three established features of urban environments that enhance residents’ lives: the provision of walkable, community and greenspace. We then outline the importance of two vital but often overlooked links in the discussion of how urban planning contributes to wellbeing: biodiversity and ecosystem functioning. Until governments and policies recognise the importance of these two elements, urban design and management for wellbeing is at best simplistic. It is important for biodiversity and ecosystem function to be considered during the design decision process. Urban designers and ecologists should recognise that their work has the potential to contribute to human wellbeing by integrating biodiversity and ecosystem functioning in their research.
Urbanisation modifies landscapes at multiple scales, impacting the local climate and changing the extent and quality of natural habitats. These habitat modifications significantly alter species ...distributions and can result in increased abundance of select species which are able to exploit novel ecosystems. We examined the effect of urbanisation at local and landscape scales on the body size, lipid reserves and ovary weight of Nephila plumipes, an orb weaving spider commonly found in both urban and natural landscapes. Habitat variables at landscape, local and microhabitat scales were integrated to create a series of indexes that quantified the degree of urbanisation at each site. Spider size was negatively associated with vegetation cover at a landscape scale, and positively associated with hard surfaces and anthropogenic disturbance on a local and microhabitat scale. Ovary weight increased in higher socioeconomic areas and was positively associated with hard surfaces and leaf litter at a local scale. The larger size and increased reproductive capacity of N.plumipes in urban areas show that some species benefit from the habitat changes associated with urbanisation. Our results also highlight the importance of incorporating environmental variables from multiple scales when quantifying species responses to landscape modification.
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DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Urban nature management is usually guided by the most common, frequently mentioned, or easily elicited perceptions expressed by a dominant cultural group. This is unlikely to encourage widespread ...community support or foster urban nature stewardship in the long run. Considering how people representing diverse cultural identities perceive the value of urban nature is key to meeting diverse community needs. In this study we explore how people not born in Australia, people who speak a language-other-than-English (LOTE), and people who self-identify as speaking a minority language, perceive the value of urban treed sites, trees at these sites, and the wildlife at these sites. We used an intercept questionnaire to collect empirical perception data, delivered in 12 different sites, including parks and streets, located in and near the Greater Melbourne Area, an ethno-culturally diverse urban area in the state of Victoria, Australia. We analyzed 1127 responses collected over 2 years using contingency- and regression-based procedures. We found that people who were not born in Australia rated the importance of treed sites and trees at these sites higher than other respondents, and LOTE respondents rated the importance of treed sites and trees at these sites lower than other respondents. Also, LOTE and some language minority respondents associated more psychological themes (i.e., stress reduction, feeling good) with treed sites than other respondents. These differences account for the influence of other cognitive, behavioral, and social-ecological context factors, such as nature relatedness, knowledge of trees, exposure to trees, demographics, and type of site (i.e., parks or streets). We discuss what these results mean for urban nature research with consideration of diverse cultural communities in cities, including integrating cultural diversity as a complement to the dominant consideration of socioeconomic patterns for understanding urban nature dynamics, accounting for conflicting values, and better communicating with and engaging these communities.
Abstract
Bioturbation, the disturbance of soil and litter by digging animals plays an important role for a variety of species and ecological processes in many ecosystems. The majority of studies ...globally on the ecosystem engineering effects of digging vertebrates have focussed on mammals, with birds, reptiles and amphibians remaining comparatively understudied. The loss of ecosystem engineers is a key conservation challenge, and the return of these species is increasingly seen as a priority for habitat restoration; yet this concept is highly novel when we consider urban ecosystems. The Australian brush‐turkey (
Alectura lathami
), historically a rainforest bird and now common in urban ecosystems, displaces significant quantities of soil and leaf litter through its foraging and nest‐building behaviour and has previously been described as an ecosystem engineer. Here, we tested the effect of brush‐turkey nest building on the decomposition rate of leaf litter, an important ecosystem process. We placed mesh bags of dried
Angophora costata
and
Lantana camara
leaves at increasing distances from brush‐turkey incubation mounds. We predicted that leaf litter closer to the nest would break down faster during the brush‐turkey breeding season due to increased turnover associated with nest mound maintenance. We found slower leaf litter decomposition in the breeding than the non‐breeding season, but a relatively greater rate of decomposition closer to the mound in the breeding season. Our results show a seasonal difference in the spatial pattern of leaf litter decomposition and movement; we interpret that brush‐turkey mound‐building behaviour was the key driver. The ecosystem services provided by brush‐turkeys are of particular interest for future research as this species is naturally recolonizing areas where it has been absent for decades, including urban areas. The effect of this species on ecosystem processes including nutrient cycling, seedbank stimulation and reduced fuel loads warrants further investigation.
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FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
The use of model caterpillars to assess relative rates of predation has risen in popularity in recent years. Among the various benefits of the technique is its capacity to provide information on the ...identity of attackers through the impressions left in the modelling clay from which the model prey is constructed. However, there currently exists no detailed information on how to assign attack marks to particular predators. We aimed to address this gap by collating a comprehensive reference collection of the types of marks made by different predators to serve as a guide for researchers wanting to identify the predators responsible for attacks. To determine what level of resolution in identification may be considered reliable, we also tested the consistency of predator assignments made by different individuals. We found that predator identification at a coarse taxonomic level (i.e., bird, mammal, arthropod) was reasonably consistent. In contrast, when more fine‐scale identification was attempted, the level of consistency and therefore also confidence in the accuracy of an identification was dramatically reduced, reflecting the difficulty of distinguishing between attacks made not only by different arthropod groups but also by differently sized birds and mammals. We recommend that identifications be made at a coarse taxonomic level and, where possible, by multiple individuals. We also suggest that our collection of images of representative attack marks from each of the coarse predator categories, and descriptions of their defining characteristics, can serve as a guide to assist with identifications and this will be complemented by a good knowledge of the locally occurring and abundant predators.
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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
Roads are an omnipresent feature of the contemporary landscape and are associated with extensive ecological impacts, including habitat degradation, changes in animal behavior, and increases in ...wildlife mortality. Road ecology has grown into a dynamic multidisciplinary research area within the environmental sciences, aiming to avoid, minimize, and offset the impacts of road use. However, current best practices in mitigation are often incomplete, failing to account for the full suite of environmental problems that roads create and for the causal mechanisms of those problems. We highlight one environmental problem that is largely absent from the road ecology literature - air pollution from motorized vehicles and from road use. Using recent examples, we discuss our current understanding of the ecological effects of air pollution and describe ways to incorporate it into a comprehensive road ecology research framework. Failure to develop such a framework will result in an incomplete representation of the impact that roads have, and will likely diminish the effectiveness of mitigation strategies.
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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NMLJ, NUK, OILJ, PNG, SAZU, SBCE, SBMB, UL, UM, UPUK
In recent decades, empirical evidence has demonstrated that nature can enable urban environments to support human wellbeing. Research into links between nature and human wellbeing is often carried ...out with one wellbeing index or in single locations, which can limit our understanding of findings. To further this work, we deployed an online survey to residents of the two most-populous cities in both Australia and New Zealand. The survey measured self-reported wellbeing via three indices used widely in the literature: general wellbeing (WHO-5), personal wellbeing, and psychological wellbeing. We compared results with two biodiversity indicators: bird species richness and the Normalised Difference Vegetation Index (NDVI) of respondents’ postcodes. We also asked respondents to rate the amount of nature they view from their immediate environment: both at home and at work or other frequent location. Our results support a link between local nature and human wellbeing across all four cities, significantly in the two Australian cities. Qualitative data reveals that urban life can challenge human wellbeing by creating a unique suite of stresses that residents strive to balance. There is the potential for nature to support human wellbeing in typically degraded urban environments. While this work corroborates existing literature demonstrating links between human wellbeing and nature, our qualitative research extends our understanding of these links by providing more detailed and nuanced information.
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.
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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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
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