Climate Warming as an Explanation for the Recent Northward Range Extension of Two Dragonflies, &lt;i&gt;Pachydiplax longipennis&lt;/i&gt; and &lt;i&gt;Perithemis tenera&lt;/i&gt;, into the Ottawa Valley, Eastern Ontario

Catling, Paul M.

doi:10.22621/cfn.v130i2.1846

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…The possibility of change in lichen communities in response to a warming climate has been of interest since van Herk et al (2002) related rising temperature to increases in "warmth-loving" species and declines in "boreo-alpine" species in the Netherlands. Although the rise in average temperature reported there (0.8°C) was comparable to the 1°C rise recorded in Ottawa (Catling 2016), an increase that was regarded to be sufficient to explain the northern range extension of two dragonflies (Catling 2016), we have not observed such changes in the lichen biota.…”

Section: Lichens and Climate Changesupporting

confidence: 47%

Additions to the lichens, allied fungi, and lichenicolous fungi of the Ottawa region in Ontario and Quebec, with reflections on a changing biota

Brodo

Lee²,

Freebury³

et al. 2021

Can Field Nat

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The inventory of lichens, allied fungi, and their parasites in the Ottawa region has grown from 391 in 1988 to 543 today, almost entirely because of the discovery of species overlooked in previous years and the inclusion of fungal parasites. In addition, almost 140 names have changed with reclassifications and re-identifications. These changes are presented here together with a list of synonyms updating the 1988 list. Vouchers are cited for all new records, and notes are presented for many species neither described nor keyed out in easily accessible literature. Reference is made to the new, complete list of lichens and lichenicolous fungi available online. The new checklist includes one species new for North America (Tremella christiansenii); five species and one variety new for Canada (Caloplaca parvula, Caloplaca reptans, Cladonia petrophila, Enchylium tenax var. ceranoides, Leprocaulon adhaerens, and Merismatium peregrinum); four new for Ontario (Caloplaca reptans, Kiliasia tristis, Lempholemma chalazanum, and Rinodina fimbriata); and nine new for Quebec (Arthonia helvola, Arthonia hypobela, Caloplaca parvula, Cladonia petrophila, Lempholemma chalazanum, Leprocaulon adhaerens, Merismatium peregrinum, Rimularia badioatra, and Tremella christiansenii). Although the climate of the region is warming, especially with higher minimum temperatures in winter, the lichen biota has not increased as a result but, in fact, may be threatened by the effects of climate change on the health of the forests and the trees that support lichens. Air quality has improved in recent decades, allowing numerous lichens to again become established in urban areas. Local areas of especially rich lichen diversity can be found on both the Ontario and Quebec sides of the region, and some of these “hot-spots” are mentioned. Other factors influencing the decrease or increase of lichen cover are also discussed.

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Section: Lichens and Climate Changesupporting

confidence: 47%

Additions to the lichens, allied fungi, and lichenicolous fungi of the Ottawa region in Ontario and Quebec, with reflections on a changing biota

Brodo

Lee²,

Freebury³

et al. 2021

Can Field Nat

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“…The existing body of scientific literature that has specifically assessed climate variability for Ottawa, Ontario, Canada, and surrounding area, is limited (e.g., [14][15][16][17][18]). Of these studies, ref.…”

Section: Introductionmentioning

confidence: 99%

“…Of these studies, ref. [18] focused less directly on climate trends and more on the effect of general Environments 2022, 9, 35 2 of 32 climate warming as a possible influence on insect populations in the Ottawa area. The other studies variously noted trends such as an increase in wet and humid conditions [14]; seasonal increases in daily minimum temperature values, as well as seasonal variation in daily maximum temperature trends [17]; the attribution of the urban heat island effect as a cause of observed winter warming in Ottawa when contrasted with smaller surrounding communities [15]; and decreased fluvial discharge throughout the Ottawa area [16].…”

Section: Introductionmentioning

confidence: 99%

Precipitation and Temperature Trends and Cycles Derived from Historical 1890–2019 Weather Data for the City of Ottawa, Ontario, Canada

Walsh

Patterson

2022

Environments

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Patterns in historical climate data were analyzed for Ottawa, Ontario, Canada, for the interval 1890–2019. Variables analyzed included records of annual, seasonal, and extreme temperature and precipitation, diurnal temperature range, and various environmental responses. Using LOWESS regressions, it was found that annual and seasonal temperatures in Ottawa have generally increased through this interval, precipitation has shifted to a less snowy, rainier regime, and diurnal temperature variation has decreased. Furthermore, the annual growing season has lengthened by 23 days to ~163 days, and the annual number of frost-free days increased by 13 days to ~215 days. Despite these substantial climatic shifts, some variables (e.g., extreme weather events per year) have remained largely stable through the interval. Time-series analyses (including multitaper spectral analysis and continuous and cross wavelet transforms) have revealed the presence of several strong cyclical patterns in the instrumental record attributable to known natural climate phenomena. The strongest such influence on Ottawa’s climate has been the 11-year solar cycle, while the influence of the El Niño-Southern Oscillation, Arctic Oscillation, North Atlantic Oscillation, and Quasi-Biennial Oscillation were also observed and linked with the trends in annual, seasonal, and extreme weather. The results of this study, particularly the observed linkages between temperature and precipitation variables and cyclic climate drivers, will be of considerable use to policymakers for the planning, development, and maintenance of city infrastructure as Ottawa continues to rapidly grow under a warmer, wetter climate regime.

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“…The existing body of scientific literature that has specifically assessed climate variability for Ottawa, Ontario, Canada, and surrounding area, is limited (e.g. (Bootsma, 1994); (Prokoph and Patterson, 2004); (Adamowski and Prokoph, 2013); (Ahmed et al, 2014); (Catling, 2016)). Of these studies, (Catling, 2016) focused less directly on climate trends and more on the effect of general climate warming as a possible influence on insect populations in the Ottawa area.…”

Section: Introductionmentioning

confidence: 99%

“…(Bootsma, 1994); (Prokoph and Patterson, 2004); (Adamowski and Prokoph, 2013); (Ahmed et al, 2014); (Catling, 2016)). Of these studies, (Catling, 2016) focused less directly on climate trends and more on the effect of general climate warming as a possible influence on insect populations in the Ottawa area. The other studies variously noted trends such as: an increase in wet and humid conditions (Bootsma, 1994); seasonal increases in daily minimum temperature values, as well as seasonal variation in daily maximum temperature trends (Ahmed et al, 2014); the attribution of the urban heat island effect as a cause of observed winter warming in Ottawa when contrasted with smaller surrounding communities (Prokoph and Patterson, 2004); and decreased fluvial discharge throughout the Ottawa area (Adamowski and Prokoph, 2013) and 3) trends in extreme weather.…”

Section: Introductionmentioning

confidence: 99%

Geographic Distribution of Trends and Cycles in Eastern North American Instrumental Climate Data

Walsh¹

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The potential environmental impact of a changing climate has been an increasingly prominent focal point of scientific and popular literature. Much of this literature has focused on global or continental trends, despite there being differences in long-term trends and medium-term variability on smaller geographic scales. This dissertation considers historical temperature and precipitation records in eastern North America, analyzing long-term changes and the influence of oscillatory climatic drivers.Three broad themes are addressed in this study, with a common methodological core. An assessment of extreme weather trends throughout the eastern North America study region is presented first. Next, two case studies are done to more thoroughly examine localized phenomena, specifically, an examination of historical climate variability in Ottawa, Ontario, Canada, and an examination of climatic drivers affecting lake ice phenology in southwest New Brunswick and adjacent eastern Maine.The methodological basis for this study is a combination of time-series analysis techniques, applied to time-dependent instrumental or proxy data. The results indicate that regional extreme weather time series, as well as local weather or weather-related time series, are best characterized in terms of long-term periodic trends due to known climatic drivers.The most significant of these drivers is the 11-year Schwabe Solar Cycle (SSC), which affects most if not all of the weather time series studied. Otherwise, cyclic patterns can be divided into interannual, interdecadal, and multidecadal scales. The most influential drivers of interannual climate patterns were the Quasi-Biennial Oscillation and the El Niño Southern ii Oscillation. At the interdecadal level, in addition to the SSC, the Pacific Decadal Oscillation was a common driver of extreme and non-extreme weather phenomena in the region.The combination of a larger-scale study with two case studies made it possible to discern spatial patterns in regional weather. For extreme weather, the region of interest can be subdivided into three climatically distinct subregions by applying hierarchical clustering to extreme weather counts. Subregional spatial coherence in eastern North America was further demonstrated by localized coherence between seasonal temperature records in eastern Ontario and southwestern Quebec, and similar localized coherence in ice phenology in southern New Brunswick and eastern Maine.

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Climate Warming as an Explanation for the Recent Northward Range Extension of Two Dragonflies, <i>Pachydiplax longipennis</i> and <i>Perithemis tenera</i>, into the Ottawa Valley, Eastern Ontario

Cited by 7 publications

References 5 publications

Additions to the lichens, allied fungi, and lichenicolous fungi of the Ottawa region in Ontario and Quebec, with reflections on a changing biota

Additions to the lichens, allied fungi, and lichenicolous fungi of the Ottawa region in Ontario and Quebec, with reflections on a changing biota

Precipitation and Temperature Trends and Cycles Derived from Historical 1890–2019 Weather Data for the City of Ottawa, Ontario, Canada

Geographic Distribution of Trends and Cycles in Eastern North American Instrumental Climate Data

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