scholarly journals Composition and carbon dynamics of forests in northeastern North America in a future, warmer worldThis article is one of a selection of papers from NE Forests 2100: A Synthesis of Climate Change Impacts on Forests of the Northeastern US and Eastern Canada.

2009 ◽  
Vol 39 (2) ◽  
pp. 213-230 ◽  
Author(s):  
Jacqueline E. Mohan ◽  
Roger M. Cox ◽  
Louis R. Iverson
Keyword(s):  
United States ◽  
Climate Change Impacts ◽  
Forest Composition ◽  
Suitable Habitat ◽  
Northeastern United States ◽  
Physical Damage ◽  
Climatic Effects ◽  
Eastern Canada ◽  
Actual Distribution ◽  
Pests And Diseases

Increasing temperatures, precipitation extremes, and other anthropogenic influences (pollutant deposition, increasing carbon dioxide) will influence future forest composition and productivity in the northeastern United States and eastern Canada. This synthesis of empirical and modeling studies includes tree DNA evidence suggesting tree migrations since the last glaciation were much slower, at least under postglacial conditions, than is needed to keep up with current and future climate warming. Exceedances of US and Canadian ozone air quality standards are apparent and offset CO2-induced gains in biomass and predispose trees to other stresses. The deposition of nitrogen and sulfate in the northeastern United States changes forest nutrient availability and retention, reduces reproductive success and frost hardiness, causes physical damage to leaf surfaces, and alters performance of forest pests and diseases. These interacting stresses may increase future tree declines and ecosystem disturbances during transition to a warmer climate. Recent modeling work predicts warmer climates will increase suitable habitat (not necessarily actual distribution) for most tree species in the northeastern United States. Species whose habitat is declining in the northeastern United States currently occur in Canadian forests and may expand northward with warming. Paleoecological studies suggest local factors may interact with, even overwhelm, climatic effects, causing lags and thresholds leading to sudden large shifts in vegetation.

Climate and hydrological changes in the northeastern United States: recent trends and implications for forested and aquatic ecosystemsThis article is one of a selection of papers from NE Forests 2100: A Synthesis of Climate Change Impacts on Forests of the Northeastern US and Eastern Canada.

2009 ◽  
Vol 39 (2) ◽  
pp. 199-212 ◽  
Author(s):  
Thomas G. Huntington ◽  
Andrew D. Richardson ◽  
Kevin J. McGuire ◽  
Katharine Hayhoe
Keyword(s):  
United States ◽  
Climate Change Impacts ◽  
First Century ◽  
Northeastern United States ◽  
Eastern Canada ◽  
Maple Syrup ◽  
Growing Season Length ◽  
Temperature And Precipitation ◽  
Decadal Scale ◽  
Recent Trends

We review twentieth century and projected twenty-first century changes in climatic and hydrologic conditions in the northeastern United States and the implications of these changes for forest ecosystems. Climate warming and increases in precipitation and associated changes in snow and hydrologic regimes have been observed over the last century, with the most pronounced changes occurring since 1970. Trends in specific climatic and hydrologic variables differ in their responses spatially (e.g., coastal vs. inland) and temporally (e.g., spring vs. summer). Trends can differ depending on the period of record analyzed, hinting at the role of decadal-scale climatic variation that is superimposed over the longer-term trend. Model predictions indicate that continued increases in temperature and precipitation across the northeastern United States can be expected over the next century. Ongoing increases in growing season length (earlier spring and later autumn) will most likely increase evapotranspiration and frequency of drought. In turn, an increase in the frequency of drought will likely increase the risk of fire and negatively impact forest productivity, maple syrup production, and the intensity of autumn foliage coloration. Climate and hydrologic changes could have profound effects on forest structure, composition, and ecological functioning in response to the changes discussed here and as described in related articles in this issue of the Journal.

Lithocolletis blancardella Fabricius (Lepidoptera: Gracilariidae) on Apple in Eastern North America with Notes on Other Species Occurring on Rosaceae

1964 ◽  
Vol 96 (11) ◽  
pp. 1442-1449 ◽  
Author(s):  
H. T. Stultz
Keyword(s):  
United States ◽  
North America ◽  
Leaf Miner ◽  
Eastern North America ◽  
Similar Species ◽  
Black Cherry ◽  
Northeastern United States ◽  
Maritime Provinces ◽  
Eastern Canada ◽  
Large Numbers

AbstractA spotted tentiform leaf miner, often present during recent years in large numbers in apple orchards in the Maritime Provinces of Canada, is identified as Lithocolletis blancardella Fabr., a species common on apples in Europe. Recent collecting indicates that the species occurs widely in Eastern Canada and the northeastern United States. Diagnostic characters, especially those of the male genitalia, are compared with those of specimens identified as L. crataegella Clem. and L. propinquinella Braun, two similar species which commonly occur on apple and black cherry respectively.

Exotic Asian pheretimoid earthworms (Amynthas spp., Metaphire spp.): Potential for colonisation of south-eastern Canada and effects on forest ecosystems

2018 ◽  
Vol 26 (2) ◽  
pp. 113-120 ◽  
Author(s):  
Jean-David Moore ◽  
Josef H. Görres ◽  
John W. Reynolds
Keyword(s):  
United States ◽  
Human Activities ◽  
Forest Ecosystems ◽  
Biological Diversity ◽  
The United States ◽  
Biological Traits ◽  
Northeastern United States ◽  
Eastern Canada ◽  
Management Options ◽  
Species Invasions

Exotic species invasions are among the most significant global-scale problems caused by human activities. They can seriously threaten the conservation of biological diversity and of natural resources. Exotic European earthworms have been colonizing forest ecosystems in northeastern United States and southern Canada since the European settlement. By comparison, Asian earthworms began colonizing forests in the northeastern United States more recently. Since Asian species have biological traits compatible with a greater potential for colonization and disturbance than some European species, apprehension is growing about their dispersal into new territories. Here we review the extent of the current northern range of Asian earthworms in northeastern North America, the factors facilitating or limiting their propagation and colonization, and the potential effects of their invasion on forest ecosystems. Data compilation shows that Asian earthworms are present in all northeastern American states. So far, only one mention has been reported in Canada. Data confirm that their distribution has now reached the Canadian border, particularly along the Michigan–Ontario, New York–Ontario, Maine–New Brunswick, and Vermont–Québec frontiers. Studies report that the presence of Asian earthworms is strongly associated with human activities such as horticulture, vermicomposting, and the use of worms as fish bait. Some climatic (temperature, soil moisture) and edaphic (soil pH) factors may also influence their distribution. Controlling their dispersal at the source is essential to limiting their spread, as there is currently no effective way to eradicate established earthworm populations without unacceptable nontarget effects. Proposed management options in the United States include the prohibition of fish bait disposal and better management of the international trade of horticultural goods, commercial nurseries, and vermicomposting industries. We conclude that although regulations and awareness may delay their expansion, Asian earthworms are likely to spread further north into Canada. They are expected to cause important changes to biodiversity and dynamics of the newly invaded forest ecosystems.

Changing climate, changing forests: The impacts of climate change on forests of the northeastern United States and eastern Canada

2012 ◽  
Author(s):  
Lindsey Rustad ◽  
John Campbell ◽  
Jeffrey S. Dukes ◽  
Thomas Huntington ◽  
Kathy Fallon Lambert ◽  
...  
Keyword(s):  
Climate Change ◽  
United States ◽  
Northeastern United States ◽  
Eastern Canada ◽  
Changing Climate ◽  
Impacts Of Climate Change

COLEOPHORA DEAURATELLA LIENIG AND ZELLER (LEPIDOPTERA, COLEOPHORIDAE) IN NORTH AMERICA: AN INTRODUCED, NEWLY DETECTED EUROPEAN MOTH INJURIOUS TO RED CLOVER SEEDS

1991 ◽  
Vol 123 (5) ◽  
pp. 1125-1133 ◽  
Author(s):  
Jean-François Landry
Keyword(s):  
United States ◽  
North America ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Northeastern United States ◽  
Eastern Canada ◽  
Diagnostic Characters ◽  
First Time

AbstractColeophora deauratella Lienig and Zeller is reported for the first time in North America. This casebearer species was introduced accidentally from Europe almost 30 years ago but remained unrecognized. It currently is known from eastern Canada and northeastern United States. Larvae feed on seeds of red clover, Trifolium pratense L. Diagnostic characters of the larval case and the adult, as well as features separating C. deauratella from two similar casebearer species, are presented.

AMERICAN SPECIES OF DIORYCTRIA (LEPIDOPTERA: PYRALIDAE) VI. A NEW SPECIES OF DIORYCTRIA FROM EASTERN CANADA AND NORTHEASTERN UNITED STATES

1982 ◽  
Vol 114 (11) ◽  
pp. 1069-1076 ◽  
Author(s):  
Akira Mutuura
Keyword(s):  
United States ◽  
New Species ◽  
Red Pine ◽  
Northeastern United States ◽  
Eastern Canada ◽  
Southern Ontario ◽  
Ecological Aspects ◽  
Lepidoptera Pyralidae ◽  
Pine Cones ◽  
A New Species

AbstractDioryctria resinosella, a species feeding on red pine cones or shoots, is described as new and recorded from Maine, southern Ontario, Wisconsin, and Minnesota. The new species is distinguished from D. zimmermani (Grote) and D. banksiella Mutuura & Munroe by the differences in wing markings, genitalia characters, and ecological aspects.

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