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Phenological trends and climate: A ‘First dates’ for Leucorrhinia dubia at Chartley Moss NNR, Staff ordshire, England, during the period 1987–2005. In most years the site was visited at 2–3 day inter- vals during the appropriate time period. In 1991–1994 it was only possible to visit weekly, and to avoid bias towards later dates, ‘fi rst dates’ are here taken as midway between the visit on which L. dubia was fi rst recorded and the preceding visit. B Mean annual maximum temperatures at Shawbury Weather Station.
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Th e history of recording and monitoring of Odonata in Britain is briefl y described. Results are then pre-sented which suggest that the country's Odonata fauna is currently in a period of fl ux, in a manner consist-ent with the actions of a high-level regulatory factor such as climate change. Th e ranges of many resident species are shifting. Leuc...
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Context 1
... for two decades. Figure 3A plots the recorded 'fi rst dates' for L. dubia during this period; there is a statistically signifi cant (p<0.05) trend towards earlier emergences in recent years. ...
Context 2
... the phenological changes. More obvious was an increase in mean annual temperature, with both the mean annual maximum temperature (Tmax) and the mean annual minimum temperature (Tmin) increasing with time. Over the period in question, Tmax showed a mean linear increase of ca. +0.06°C per year (p<0.05 at Sutton Bonnington, p<0.01 at Shawbury -see Fig. 3B), while Tmin showed a mean linear in-crease of ca. +0.05°C per year (p<0.05). Th ese trends may well account for the observed shifts in spring emergences. In contrast to the results for fi rst dates, the data for late dates was more scattered, principally due to sporadic very late sightings (the latest being 12 October) apparently ...
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Citations
... As climate change phenomena become a threat to this ecosystem, monitoring climatic indicator species helps us understand the change of ecosystem functions caused by climate change. Odonates have for some time been used successfully as model organisms to study climate change (Hassall & Thompson 2008;Parr 2010;Jaeschke et al. 2013;Bush et al. 2014;Hassall 2015;Termaat et al. 2019). Studies by Flenner & Sahlén (2008) has shown that species composition and abundance may change over as short a time span as 10 years due to environmental changes as dragonflies react rapidly to climate change. ...
A total of 19 species of odonates, including eight species of Anisoptera (dragonflies) and 11 species of Zygoptera (damselflies), were recorded along the Tirthan River, Great Himalayan National Park Conservation Area (GHNPCA), Himachal Pradesh. Among these species, 17 were reported from the area for the first time. With the addition of these new records the number of odonates known from the GHNPCA is increased to 23 species representing 18 genera and eight families. Indothemis carnatica, Agriocnemis femina, and Argiocnemis rubescens are reported for the first time from the western Himalayan region. The study found a significant change in the species composition of odonates over a period of 18 years in the area, which may be due to changes in microhabitat conditions associated with climate change.
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... Due to their quick response to global warming, dragonflies are good indicators of climate change (McNeely 2010); thus, increasing records of this thermophilic species at high altitudes in the Alps could really be linked to a genuine expansion on a 10-15 year time span, rather than to an earlier lack of relevant data and further surveys are needed to confirm reproduction in PNVG and surrounding areas. Indeed, C. erythraea expansion was already well documented north of the Alps 10 years ago (Krokhalo 2010, Ott 2010, Parr 2010 and has been recently confirmed as moderate on a European scale (Termaat et al. 2019). ...
The results of a survey aimed at describing the Odonate fauna of Val Grande National Park are presented, which was carried out in the framework of the project "Animal Biodiversity Monitoring in Alpine Habitat". Relevant literature was examined and data collected intensively in summer 2016 and extensively in the period 2014-2019. Prior to this research specific knowledge on dragonfly and damselfly presence and distribution accounted for 6 species for the study area, which were recorded near the northern border but outside the park. The first Odonate checklist here provided is based on 188 records (1173 individuals), of which 137 are recent and unpublished. Comprehensively 25 species were recorded (14 breeding), which represent 26% of the Italian fauna, 36% of Piedmont and 58% of the province of Verbano Cusio Ossola, whereas three species were not confirmed; 10 species were found inside the park (4 breeding). Odonate diversity was remarkable, thanks to Val Grande geographical position between the Alps and the Insubric region and to high rainfall coupled with a complex orography. The study area hosts populations of the boreo-alpine species Somatochlora alpestris and Sympetrum danae, which are scattered and isolated in Italian Alps, and of the endemic European Cordulegaster bidentata; it hosts lotic taxa which are concentrated in SW Europe where they are under pressure because of droughts and exploitation of freshwater. Conservation and status issues of observed dragonflies and damselflies are discussed in the light of the growing interest gained by odonates as ecological indicators. The study proposes to use this knowledge to guide the future expansions of the protected area.
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The wetlands of Saudi Arabia are located in a water-stressed region that is highly vulnerable to climate and other global changes. Sebkhas, mudflats, mangroves, and wadis are the dominant wetlands in the arid regions of North Africa and the Arabian Peninsula. These unique wetlands are recognized as a sanctuary for biodiversity and for their economic services generated from mineral extraction, agriculture, and grazing. Despite their ecological values and societal services, the long-term permanence of Saudi Arabia's wetlands faces strong challenges resulting from human activities associated with sustained population growth, habitat degradation, and coastal development. This paper consolidates a literature review of Saudi Arabia's wetlands from local to global importance, highlights their biodiversity, and identifies threats and evolution of these vulnerable ecosystems in the arid Arabian Peninsula by focusing on the status of key freshwater taxa (Odonata, freshwater fishes, amphibians, and waterbirds) and documenting changes affecting important wetlands.
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... Current biodiversity indicators that have potential to be included in such models often rely on monitoring data of relatively restricted systematic groups. Commonly these are aesthetically attractive, such as birds (Schmeller et al. 2012), butterflies (Dover et al. 2011) and dragonflies (Parr 2010) or have a societal impact such as bees (Schindler et al. 2013). For these groups momentum can be generated amongst the general public to gather and contribute faunistic data to large databases. ...
We present an interactive key that is available online through any web browser without the need to install any additional software, making it an easily accessible tool for the larger public. The key can be found at http://identify.naturalis.nl/lithocolletinae. The key includes all 86 North-West European Lithocolletinae, a subfamily of smaller moths ("micro-moths") that is commonly not treated in field guides. The user can input data on several external morphological character systems in addition to distribution, host plant and even characteristics of the larval feeding traces to reach an identification. We expect that this will enable more people to contribute with reliable observation data on this group of moths and alleviate the workload of taxonomic specialists, allowing them to focus on other new keys or taxonomic work.
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It is uncertain whether Protected Areas (PAs) will conserve high abundances of species as their distributions and abundances shift in response to climate change. We analysed large datasets for 57 butterfly and 42 odonate species (including 4 that have recently colonised Britain). We found that 73 of 94 species with sufficient data for analysis were more abundant inside than outside PAs in the historical parts of their British distributions, showing that PAs have retained high conservation value. A significant majority (61 of 99 species) was also more abundant inside PAs in regions they have colonised during the last 30–40 years of climate warming. Species with relatively high abundances inside PAs in long-established parts of their distributions were also disproportionately associated with PAs in recently-colonized regions, revealing a set of relatively PA-reliant species. PAs therefore play a vital role in the conservation of biodiversity as species’ ranges become more dynamic.This article is protected by copyright. All rights reserved.
... The species has recently expanded and founded populations in three directions: eastward (Switzerland: 2006 (Hoess, 2007), northward (Belgium: 1998 (Wasscher and Goudsmits, 2010)), Germany: 2006 (Glitz, 2008), The Netherlands: 2007 (Geraeds et al., 2011), and westward (Jersey in 2009 (Perchard and Long, 2009) and mainland UK in 2010 (Parr, 2011)) (Figure 1). Although different factors can be causing this range expansion, it is known that many Southern Odonate species, besides C. scitulum, are currently expanding their range, suggesting a role for global warming (Hickling et al., 2005; Goffart, 2010; Parr, 2010; Termaat et al., 2010). The alternative explanation that C. scitulum is responding to improved habitat quality seems less likely as the species does not have a strong habitat preference (Wasscher and Goudsmits, 2010). ...
Many ectothermic species are currently expanding their geographic range due to global warming. This can modify the population genetic diversity and structure of these species because of genetic drift during the colonization of new areas. Although the genetic signatures of historical range expansions have been investigated in an array of species, the genetic consequences of natural, contemporary range expansions have received little attention, with the only studies available focusing on range expansions along a narrow front. We investigate the genetic consequences of a natural range expansion in the Mediterranean damselfly Coenagrion scitulum, which is currently rapidly expanding along a broad front in different directions. We assessed genetic diversity and genetic structure using 12 microsatellite markers in five centrally located populations and five recently established populations at the edge of the geographic distribution. Our results suggest that, although a marginal significant decrease in the allelic richness was found in the edge populations, genetic diversity has been preserved during the range expansion of this species. Nevertheless, edge populations were genetically more differentiated compared with core populations, suggesting genetic drift during the range expansion. The smaller effective population sizes of the edge populations compared with central populations also suggest a contribution of genetic drift after colonization. We argue and document that range expansion along multiple axes of a broad expansion front generates little reduction in genetic diversity, yet stronger differentiation of the edge populations.Heredity advance online publication, 3 July 2013; doi:10.1038/hdy.2013.64.
