scholarly journals Evidence of Raccoon, Procyon lotor, Range Extension in Northern Alberta

2008 ◽  
Vol 122 (2) ◽  
pp. 176 ◽  
Author(s):  
A. David M. Latham
Keyword(s):  
Global Warming ◽  
Boreal Forest ◽  
Range Expansion ◽  
Procyon Lotor ◽  
Range Extension ◽  
Northern Limit ◽  
Industrial Activity ◽  
Northeastern Alberta ◽  
Northern Alberta

The northern limit of Raccoon (Procyon lotor) distribution in northeastern Alberta and northwestern Saskatchewan remains unclear. I report an observation of a Raccoon that supports claims that this species has expanded its range well into the boreal forest of northeastern Alberta. Agriculture, industrial activity, and global warming may be important factors in facilitating Raccoon range expansion in the boreal regions of Alberta and Saskatchewan.

scholarly journals Mountain pine beetle host-range expansion threatens the boreal forest

2011 ◽  
Vol 20 (10) ◽  
pp. 2157-2171 ◽  
Author(s):  
CATHERINE I. CULLINGHAM ◽  
JANICE E. K. COOKE ◽  
SOPHIE DANG ◽  
COREY S. DAVIS ◽  
BARRY J. COOKE ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Host Range ◽  
Range Expansion ◽  
Mountain Pine Beetle ◽  
Host Range Expansion ◽  
Mountain Pine ◽  
Pine Beetle

scholarly journals First Occurrence of the Grey Fox, Urocyon cinereoargenteus, in New Brunswick: a Climate-change Mediated Range Expansion?

2008 ◽  
Vol 122 (2) ◽  
pp. 169
Author(s):  
Donald McAlpine ◽  
James D. Martin ◽  
Cade Libby
Keyword(s):  
Climate Change ◽  
New Brunswick ◽  
Threatened Species ◽  
North American ◽  
Range Expansion ◽  
Range Extension ◽  
Urocyon Cinereoargenteus ◽  
Subadult Male ◽  
Warming Climate ◽  
First Occurrence

The first occurrence in New Brunswick of the Grey Fox (Urocyon cinereoargenteus), a threatened species in Canada, is documented based on a 4.3 kg subadult male trapped in the southwestern corner of the province. This is an approximate range extension of 135 km from the most northerly Maine occurrence and may reflect a larger North American range expansion underway since 1930-40, perhaps in response to warming climate.

Tree growth response to climate change at the deciduous–boreal forest ecotone, Ontario, Canada

2005 ◽  
Vol 35 (11) ◽  
pp. 2709-2718 ◽  
Author(s):  
D Goldblum ◽  
L S Rigg
Keyword(s):  
Climate Change ◽  
Boreal Forest ◽  
Sugar Maple ◽  
White Spruce ◽  
Balsam Fir ◽  
Northern Limit ◽  
Monthly Temperature ◽  
Temperature And Precipitation ◽  
The Future ◽  
Forest Ecotone

We consider the implications of climate change on the future of the three dominant forest species, sugar maple (Acer saccharum Marsh.), white spruce (Picea glauca (Moench) Voss), and balsam fir (Abies balsamea (L.) Mill.), at the deciduous–boreal forest ecotone, Ontario, Canada. Our analysis is based on individual species responses to past monthly temperature and precipitation conditions in light of modeled (general circulation model) monthly temperature and precipitation conditions in the study area for the 2080s. We then consider the tree species sensitivity to past climate with predicted conditions for the 2080 period. Sugar maple, located at its northern limit in the study area, shows the greatest potential for increased growth rates under the predicted warming and altered precipitation regime. White spruce is likely to benefit less, while the understory dominant balsam fir is likely to experience a decrease in growth potential. These projected changes would enhance the future status of sugar maple at its northern limit and facilitate range expansion northward in response to global warming.

scholarly journals First record of Mus cookii (Cook’s mouse) from Pothwar, Pakistan: a probable case of range extension?

Mammalia ◽  
2019 ◽  
Vol 83 (2) ◽  
pp. 198-202 ◽  
Author(s):  
Shahnaz Bibi ◽  
Muhammad Sajid Nadeem ◽  
Muhammad Bilal Anwar ◽  
Syed Israr Shah ◽  
Amjad Rashid Kayani ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Range Expansion ◽  
Southern China ◽  
First Record ◽  
Gene Analysis ◽  
Range Extension ◽  
Source Population ◽  
Peninsular India ◽  
Probable Case ◽  
Central Thailand

Abstract The Southeast Asian species Mus (Mus) cookii Ryley 1914 has been previously reported from southern China, Nepal, northeastern and peninsular India, Myanmar, north and central Thailand and Vietnam. A cytochrome b (Cytb) gene analysis revealed the presence of M. cookii which significantly expands the known western range of this species. However, it is unclear whether the M. cookii population in the Pothwar region represents a historical or recent westward range expansion or, on the contrary, a relictual source population that further experienced an historic eastward range expansion into Southeast Asia.

scholarly journals Climate change and bird reproduction: warmer springs benefit breeding success in boreal forest grouse

2017 ◽  
Vol 284 (1866) ◽  
pp. 20171528 ◽  
Author(s):  
Per Wegge ◽  
Jørund Rolstad
Keyword(s):  
Global Warming ◽  
Boreal Forest ◽  
Breeding Success ◽  
Brood Size ◽  
The Other ◽  
Black Grouse ◽  
Northern Latitudes ◽  
Declining Populations ◽  
Finnish Study ◽  
Mismatch Hypothesis

Global warming is predicted to adversely affect the reproduction of birds, especially in northern latitudes. A recent study in Finland inferred that declining populations of black grouse, Tetrao tetrix , could be attributed to advancement of the time of mating and chicks hatching too early—supporting the mismatch hypothesis. Here, we examine the breeding success of sympatric capercaillie, T. urogallus, and black grouse over a 38-year period in southeast Norway. Breeding season temperatures increased, being most pronounced in April. Although the onset of spring advanced nearly three weeks, the peak of mating advanced only 4–5 days. In contrast to the result of the Finnish study, breeding success increased markedly in both species (capercaillie: 62%, black grouse: 38%). Both brood frequency and brood size increased during the study period, but significantly so only for brood frequency in capercaillie. Whereas the frequency of capercaillie broods was positively affected by rising temperatures, especially during the pre-hatching period, this was not the case in black grouse. Brood size, on the other hand, increased with increasing post-hatching temperatures in both species. Contrary to the prediction that global warming will adversely affect reproduction in boreal forest grouse, our study shows that breeding success was enhanced in warmer springs.

scholarly journals Analysis of the Effect of Climate Warming on Paludification Processes: Will Soil Conditions Limit the Adaptation of Northern Boreal Forests to Climate Change? A Synthesis

Forests ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1176
Author(s):  
Ahmed Laamrani ◽  
Osvaldo Valeria ◽  
Abdelghani Chehbouni ◽  
Yves Bergeron
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Boreal Forest ◽  
Climate Warming ◽  
Boreal Forests ◽  
Extreme Weather Events ◽  
Soil Conditions ◽  
Climatic Warming ◽  
Forest Species ◽  
Peat Accumulation

Northern boreal forests are characterized by accumulation of accumulation of peat (e.g., known as paludification). The functioning of northern boreal forest species and their capacity to adapt to environmental changes appear to depend on soil conditions. Climate warming is expected to have particularly pronounced effects on paludified boreal ecosystems and can alter current forest species composition and adaptation by changing soil conditions such as moisture, temperature regimes, and soil respiration. In this paper, we review and synthesize results from various reported studies (i.e., 88 research articles cited hereafter) to assess the effects of climatic warming on soil conditions of paludified forests in North America. Predictions that global warming may increase the decomposition rate must be considered in combination with its impact on soil moisture, which appears to be a limiting factor. Local adaptation or acclimation to current climatic conditions is occurring in boreal forests, which is likely to be important for continued ecosystem stability in the context of climate change. The most commonly cited response of boreal forest species to global warming is a northward migration that tracks the climate and soil conditions (e.g., temperature and moisture) to which they are adapted. Yet, some constraints may influence this kind of adaptation, such as water availability, changes in fire regimes, decomposer adaptations, and the dynamic of peat accumulation. In this paper, as a study case, we examined an example of potential effects of climatic warming on future paludification changes in the eastern lowland region of Canada through three different combined hypothetical scenarios based on temperature and precipitation (e.g., unchanged, increase, or decrease). An increase scenario in precipitation will likely favor peat accumulation in boreal forest stands prone to paludification and facilitate forested peatland expansion into upland forest, while decreased or unchanged precipitation combined with an increase in temperature will probably favor succession of forested peatlands to upland boreal forests. Each of the three scenarios were discussed in this study, and consequent silvicultural treatment options were suggested for each scenario to cope with anticipated soil and species changes in the boreal forests. We concluded that, despite the fact boreal soils will not constrain adaptation of boreal forests, some consequences of climatic warming may reduce the ability of certain species to respond to natural disturbances such as pest and disease outbreaks, and extreme weather events.

scholarly journals A specimen of Paralycoptera Chang & Chou 1977 (Teleostei: Osteoglossoidei) from Hong Kong (China) with a potential Late Jurassic age that extends the temporal and geographical range of the genus

2014 ◽  
Author(s):  
Tze-Kei Tse ◽  
Michael Pittman ◽  
Meemann Chang
Keyword(s):  
Hong Kong ◽  
Early Cretaceous ◽  
Range Expansion ◽  
Teleost Fish ◽  
Late Jurassic ◽  
Range Extension ◽  
Geographical Range ◽  
Postcranial Skeleton ◽  
Mainland Chinese ◽  
Radiometric Data

We identify an osteoglossoid teleost fish - Paralycoptera - from Late Jurassic volcaniclastic mudstones from the Lai Chi Chong Formation of Hong Kong, China. This partially preserved postcranial skeleton represents the first Mesozoic fish from Hong Kong and the most southerly Paralycoptera to date. A radiometric date for the Lai Chi Chong Formation of ~146 Ma implies a temporal range expansion for Paralycoptera of approximately 40 million years back from the Early Cretaceous (~110Ma). However, spores found in the Formation suggest an Early Cretaceous age that is consistent with the existing age assignment to Paralycoptera. We argue that the proposed temporal range extension is genuine because it is based on recent precise and accurate radiometric data, but given the discrepancies with the biostratigraphic ages further investigation is needed to confirm this. This study provides an important step towards revealing Hong Kong’s Mesozoic vertebrate fauna and understanding its relationship to well-studied mainland Chinese ones.

OBSERVATIONS ON THE BIOLOGY OF AMETROPUS NEAVEI (EPHEMEROPTERA: AMETROPODIDAE) FROM A LARGE RIVER IN NORTHERN ALBERTA, CANADA

1979 ◽  
Vol 111 (7) ◽  
pp. 855-858 ◽  
Author(s):  
Hugh F. Clifford ◽  
David R. Barton
Keyword(s):  
Life Cycle ◽  
Small Particle ◽  
Large River ◽  
Large Rivers ◽  
Flowing Water ◽  
Emergence Period ◽  
Athabasca River ◽  
Northeastern Alberta ◽  
Northern Alberta

AbstractAmetropus neavei McDunnough populations apparently inhabit only large rivers. In the Athabasca River of northeastern Alberta, Canada, the species has an univoltine life cycle, with some overlap of generations. There appears to be an extended emergence period (June and July), the nymphs are found in flowing water at depths greater than 0.5 m, and the population is almost entirely small-particle detritivores.

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