Reintroduction of the rare damselfly Ischnura gemina (Odonata: Coenagrionidae) into an urban California park

Hannon, Eugene R.; Hafernik, John E.

doi:10.1007/s10841-006-9027-8

Cited by 28 publications

(18 citation statements)

References 27 publications

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“…Higher male than female populations were also observed in Ischnura graellsii (Cardero-Rivera, 1990), C. tenelum (Andreas and Rivera, 2001), and I. gemina (Hannon and Hafernik, 2006), but in I. gemina (Garisson and Hafernik, 1981) and C. merculiale (Watts et al, 2007) populations, a much lower percentage of recapture was recorded.…”

Section: Abundance Of a Femina In Rice Cultivation Phasesmentioning

confidence: 94%

Agriocnemis femina (Odonata: Coenagrionidae) and its significance in environmental parameters of rice pests in northern Sumatra-Indonesia

Siregar¹,

Rawi²,

Ahmad³

et al. 2016

IOSR

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Section: Abundance Of a Femina In Rice Cultivation Phasesmentioning

confidence: 94%

Agriocnemis femina (Odonata: Coenagrionidae) and its significance in environmental parameters of rice pests in northern Sumatra-Indonesia

Siregar¹,

Rawi²,

Ahmad³

et al. 2016

IOSR

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“…Examples include urban wetlands in north‐central Florida which supported the round‐tailed muskrat ( Neofiber alleni ), a wetland obligate rodent and near‐endemic in Florida which is considered of conservation concern (Faller and McCleery ). In another study, urban parks in California supported populations of the damselfly Ischnura gemina (Hannon and Hafernik ), vulnerable on the IUCN Red List. Urban waterbodies in North America, if properly managed, may serve as refuges for turtle populations such as those of the western pond turtle Emys marmorata .…”

Section: Biodiversity In Urban Pondsmentioning

confidence: 99%

Review: Toward management of urban ponds for freshwater biodiversity

2019

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Many cities around the world are expanding and this trend in urbanization is expected to sharply increase over coming decades. At the same time, the integration of green and blue spaces is widely promoted in urban development, potentially offering numerous benefits for biodiversity. This is particularly relevant for urban waterbodies, a type of ecosystem present in most cities. However, site managers often lack the knowledge base to promote biodiversity in these waterbodies, which are generally created to provide other ecosystem services. To address this, our review presents guidelines for promoting biodiversity in urban ponds. We found a total of 516 publications indexed in ISI Web of Sciences related to this topic, of which 279 were retained for the purposes of our review. The biodiversity of urban ponds, measured by species richness, appears to be generally lower than in rural ponds; however, urban ponds often support threatened species. Furthermore, if well managed, urban ponds have the potential to support a much greater biodiversity than they currently do. Indeed, this review shows that a range of urban factors can impair or promote pond biodiversity, including many that can easily be controlled by site managers. Local factors include design (surface area, pond depth, banks and margins, shade, shoreline irregularity), water quality (conductivity, nutrients, heavy metals), and hydroperiod and biotic characteristics (stands of vegetation, fish, invasive species). Important regional factors include several indicators of urbanization (roads, buildings, density of population, impervious surfaces, car traffic), and the presence of other wetlands or green spaces in the surrounding landscape. We considered each of these factors and their potential impact on freshwater biodiversity. Taking into account the management measures listed in the publications reviewed, we have proposed a framework for the management of urban ponds, with guidelines to promote biodiversity and other ecosystem services, and to avoid ecosystem disservices or the creation of ecological traps. At the city scale, the biodiversity of a pondscape benefits from a high diversity of pond types, differing in their environmental characteristics and management.

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“…This species is endemic to the San Francisco Bay area, USA, which is highly urbanised. Even though I. gemina has been able to survive despite the stressors in the region (Garrison & Hafernik, 1981a, b), populations are decreasing and now it is threatened by urban development, in spite of repatriation efforts (Hannon & Hafernik, 2007). This species is currently under protection, which is predicted to benefi t the species under climate change scenarios as well (Sánchez-Guillén et al, 2014).…”

Section: The Conservation Value Of Urban Water Bodies For Odonatesmentioning

confidence: 99%

Dragonflies and damselflies (Odonata) in urban ecosystems: A review

Villalobos-Jiménez¹,

Dunn²,

Hassall³

2016

Eur. J. Entomol.

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ISSN (online): 1802-8829http://www.eje.cz gate current research on the impacts of urbanisation using odonates as a model group. First, we will present a brief overview on the impacts of urbanisation on terrestrial and freshwater ecosystems, then we conduct a systematic literature review regarding odonates in urban environments and outline the plausible effects on odonates, followed by the use of odonates as bioindicators, the conservation value of urban wetlands for odonates, a summary of evolutionary strategies for species to cope with urban stressors, and fi nally we conclude by identifying research needs. THE EFFECTS OF URBAN STRESSORS ON TERRESTRIAL AND FRESHWATER ECOSYSTEMSThe wide range of impacts associated with urbanisation indicates that it exerts a considerable effect on terrestrial biodiversity. Most studies show that species richness and evenness is reduced in highly urbanised regions, depending on the taxonomic group observed, degree of urbanisation, and spatial scale of analysis (McKinney, 2002(McKinney, , 2008. For example, butterfl ies (Ruszczyk, 1987;Ruszczyk & De Araujo, 1992; Blair & Launer, 1997) and ground arthropods (McIntyre et al., 2001) show this tendency. The general pattern of biodiversity decrease in cities is probably due to the fact that over 80% of land in city cores is covered by buildings and pavements, with the remain- Abstract. The expansion of urban areas is one of the most signifi cant anthropogenic impacts on the natural landscape. Due to their sensitivity to stressors in both aquatic and terrestrial habitats, dragonfl ies and damselfl ies (the Odonata) may provide insights into the effects of urbanisation on biodiversity. However, while knowledge about the impacts of urbanisation on odonates is growing, there has not been a comprehensive review of this body of literature until now. This is the fi rst systematic literature review conducted to evaluate both the quantity and topics of research conducted on odonates in urban ecosystems. From this research, 79 peer-reviewed papers were identifi ed, the vast majority (89.87%) of which related to studies of changing patterns of biodiversity in urban odonate communities. From the papers regarding biodiversity changes, 31 were performed in an urban-rural gradient and 21 of these reported lower diversity towards built up city cores. Twelve of the cases of biodiversity loss were directly related to the concentrations of pollutants in the water. Other studies found higher concentrations of pollutants in odonates from built-up catchments and suggested that odonates such as Aeshna juncea and Platycnemis pennipes may be candidate indicators for particular contaminants. We conclude by identifying current research needs, which include the need for more studies regarding behavioural ecology and life-history traits in response to urbanisation, and a need to investigate the mechanisms behind diversity trends beyond pollution.

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Reintroduction of the rare damselfly Ischnura gemina (Odonata: Coenagrionidae) into an urban California park

Cited by 28 publications

References 27 publications

Agriocnemis femina (Odonata: Coenagrionidae) and its significance in environmental parameters of rice pests in northern Sumatra-Indonesia

Agriocnemis femina (Odonata: Coenagrionidae) and its significance in environmental parameters of rice pests in northern Sumatra-Indonesia

Review: Toward management of urban ponds for freshwater biodiversity

Dragonflies and damselflies (Odonata) in urban ecosystems: A review

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