Studies on the Balsam-Fir Seed Chalcid, Megastigmus specularis Walley (Hymenoptera, Chalcididae)

1956 ◽  
Vol 88 (12) ◽  
pp. 691-697 ◽  
Author(s):  
A. F. Hedlin
Keyword(s):  
United States ◽  
New Brunswick ◽  
National Park ◽  
Abies Balsamea ◽  
The United States ◽  
Balsam Fir ◽  
Forest Nursery ◽  
Riding Mountain National Park ◽  
Natural Stands

The balsam-fir seed chalcid, Megastigmus specularis Walley, destroys a high percentage of seeds of balsam fir, Abies balsamea (L.) Mill. The insect was first recorded in Canada in 1928 from New Brunswick and in 1932 was described by Walley (1932). It has been taken in the United States as far west as Minnesota (Peck, 1951). In 1953 the insect was reared from seeds of balsam fir taken at the Forest Nursery Station, Indian Head, Saskatchewan. Further investigations in 1954 showed the insect to be abundant at Indian Head, and also in natural stands of balsam fir in Riding Mountain National Park, Manitoba.

Effects of wildfire on national park visitation and the regional economy: a natural experiment in the Northern Rockies

2013 ◽  
Vol 22 (8) ◽  
pp. 1155 ◽  
Author(s):  
John W. Duffield ◽  
Chris J. Neher ◽  
David A. Patterson ◽  
Aaron M. Deskins
Keyword(s):  
United States ◽  
National Park ◽  
Net Present Value ◽  
Wildland Fire ◽  
The United States ◽  
Management Policy ◽  
Demand Models ◽  
Value Loss ◽  
Park Service ◽  
Observed Behaviour

Federal wildland fire management policy in the United States directs the use of value-based methods to guide priorities. However, the economic literature on the effect of wildland fire on nonmarket uses, such as recreation, is limited. This paper introduces a new approach to measuring the effect of wildfire on recreational use by utilising newly available long-term datasets on the location and size of wildland fire in the United States and observed behaviour over time as revealed through comprehensive National Park Service (NPS) visitor data. We estimate travel cost economic demand models that can be aggregated at the site-landscape level for Yellowstone National Park (YNP). The marginal recreation benefit per acre of fire avoided in, or proximate to, the park is US$43.82 per acre (US$108.29 per hectare) and the net present value loss for the 1986–2011 period is estimated to be US$206 million. We also estimate marginal regional economic impacts at US$36.69 per acre (US$90.66 per hectare) and US$159 million based on foregone non-resident spending in the 17-county Great Yellowstone Area (GYA). These methods are applicable where time-series recreation data exist, such as for other parks and ecosystems represented in the 397-unit NPS system.

William Diller Matthew, 1871 - 1930

1932 ◽  
Vol 1 (1) ◽  
pp. 71-74 ◽  
Keyword(s):  
United States ◽  
New York ◽  
Natural History ◽  
New Brunswick ◽  
Graduate Student ◽  
The United States ◽  
Columbia University ◽  
American Museum ◽  
Vertebrate Palaeontology

William Diller Matthew was the eldest child of Dr. G. E. Matthew, of New Brunswick, an amateur geologist, who, by his great collections and excellent papers, added much to our knowledge of that part of Canada. Dr. Matthew was born on February 19,1871, in St. John, New Brunswick ; throughout his life he retained an interest in this town, visiting it yearly, except when abroad, and retaining his Canadian nationality during nearly forty years’ residence in the United States. Dr. Matthew was introduced to geological methods by his father, and sent at first to the small University of Halifax, whence in 1892 he proceeded to Columbia University as a graduate-student, there studying geology, mineralogy and metallurgy. He graduated Ph.D. in 1895. In that year he was selected by Professor H. F. Osborn, whose classes he had attended, as assistant in the department of Vertebrate Palaeontology in the American Museum of Natural History, New York. In this department he worked for thirty-two years, finally becoming Curator-in-chief of the division of geology, mineralogy and palaeontology.

scholarly journals Valuing Our National Parks: An Ecological Economics Perspective

Land ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 54
Author(s):  
Paul Sutton ◽  
Sophia Duncan ◽  
Sharolyn Anderson
Keyword(s):  
United States ◽  
National Parks ◽  
Ecosystem Service ◽  
National Park ◽  
National Park Service ◽  
Natural Capital ◽  
The United States ◽  
Commercial Real Estate ◽  
Annual Budget ◽  
Park Service

The annual budget for the United States National Park Service was roughly $3 billion in 2016. This is distributed amongst 405 National Parks, 23 national scenic and historic trails, and 60 wild and scenic rivers. Entrance fees and concessions generate millions of dollars in income for the National Park Service; however, this metric fails to account for the total value of the National Parks. In failing to consider the value of the ecosystem services provided by the National Parks, we fail to quantify and appreciate the contributions our parks make to society. This oversight allows us to continue to underfund a valuable part of our natural capital and consequently damage our supporting environment, national heritage, monetary economy, and many of our diverse cultures. We explore a simple benefits transfer valuation of the United States’ national parks using National Land Cover Data from 2011 and ecosystem service values determined by Costanza et al. This produces an estimate suggesting the parks provide $98 billion/year in ecosystem service value. If the natural infrastructure ‘asset’ that is our national park system had a budget comparable to a piece of commercial real estate of this value, the annual budget of the National Park Service would be roughly an order of magnitude larger at something closer to $30 billion rather than $3 billion.

scholarly journals A molecular epidemiological analysis of the incursion of the raccoon strain of rabies virus into Canada

2005 ◽  
Vol 134 (3) ◽  
pp. 534-547 ◽  
Author(s):  
S. A. NADIN-DAVIS ◽  
F. MULDOON ◽  
A. I. WANDELER
Keyword(s):  
United States ◽  
New Brunswick ◽  
Genetic Characterization ◽  
The United States ◽  
Epidemiological Analysis ◽  
Cross Border ◽  
P Gene ◽  
Canadian Provinces ◽  
Index Cases

Three physically separate incursions of the raccoon strain of rabies have entered Canada, two into eastern Ontario in 1999 and one into New Brunswick in 2000. The course of these epizootics is described. Phylogenetic analysis of the index cases from these two provinces with raccoon rabies viruses representative of this strain in the United States supported the independence of these incursions into Canada via cross-border transmission from the United States. Genetic characterization of 190 isolates from these two Canadian provinces over a 550-bp region of the variable central portion of the viral P gene distinguished 14 variants in Ontario and five in New Brunswick although in both regions the variant represented by the initial case was most commonly encountered. The quasi-species nature of the Ontario virus was analysed using isolates taken at different times during the main outbreak to examine whether viral variation was increasing with time as well as changing in nature. These data provide a framework for study of future incursions of this rabies strain into Canada.

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