Spatial distribution of forest landscape change in western New York from presettlement to the present

2009 ◽  
Vol 39 (1) ◽  
pp. 76-88 ◽  
Author(s):  
Yi-Chen Wang ◽  
Barry J. Kronenfeld ◽  
Chris P.S. Larsen
Keyword(s):  
New York ◽  
Sugar Maple ◽  
Forest Landscape ◽  
Red Maple ◽  
Spatially Resolved ◽  
Time Period ◽  
The Us ◽  
Land Survey ◽  
Abundant Taxon ◽  
Taxon Composition

Changes in tree taxon composition and distribution in western New York over a 200 year time period ca. 1797–1993 were examined by comparing the presettlement land survey with the US Forest Inventory and Analysis (FIA) survey. To ensure data quality, biases in presettlement bearing tree selection and FIA plot location were assessed. A 6 mile × 6 mile grid of taxa abundance was then estimated using geostatistics. Overall, significant changes in taxon composition occurred, with the taxa most abundant in the presettlement land survey — beech (37.0%), sugar maple (21.0%), and eastern hemlock (8.3%) — being replaced by sugar maple (19.2%), ash (11.7%), and red maple (11.4%) in the FIA survey. Spatially resolved comparisons showed that the landscape changed from fairly spatially homogeneous to more heterogeneous; in the presettlement survey, the most abundant taxon in most of the 6 mile × 6 mile grid cells was beech, while in the present survey, the most abundant taxon in most of the cells was one of several early successional taxa that each displayed a distinctly clustered geographic pattern of dominance. The clusters of dominance of the different early successional taxa may correspond to environmental factors. This study demonstrates the insights available through spatially resolved analyses of changes in the forest landscape between presettlement and present.

A comparison of vegetative cover and tree community structure in three forested Adirondack watersheds

1985 ◽  
Vol 15 (5) ◽  
pp. 881-889 ◽  
Author(s):  
Christopher S. Cronan ◽  
Marc R. DesMeules
Keyword(s):  
New York ◽  
Sugar Maple ◽  
New York State ◽  
Basal Area ◽  
Red Maple ◽  
Vegetative Cover ◽  
Cover Type ◽  
Tree Community ◽  
Standing Dead ◽  
Annual Biomass

The Integrated Lake–Watershed Acidification Study (ILWAS) was conducted using three forested watersheds (Panther, Sagamore, and Woods) in the central Adirondack Park of New York State. By comparing the biogeochemical behavior of these watersheds, the ILWAS investigators hoped to elucidate the major ecosystem parameters controlling the fate of strong acids introduced from the atmosphere to lake–watershed systems. The ILWAS vegetation research program was designed to compare the quantitative patterns of forest structure in these midelevation watersheds. Results showed that the ILWAS catchments contain closely related variants of the northern hardwood – spruce – fir complex of the Adirondack region. The dominant tree species in these watersheds are beech (Fagusgrandifolia Ehrh.), red spruce (Picearubens Sarg.), sugar maple (Acersaccharum Marsh.), red maple (Acerrubrum L.), and yellow birch (Betulaalleghaniensis Britt.). On an areal basis, the watersheds contain 57–88% hardwood cover type and 5–29% spruce–fir cover type. Mean live basal area values range from 22 to 30 m2 ha−1 between catchments, while standing dead basal area values range from 4 to 8 m2 ha−1. Mean live stem densities range from 1400 to 1700 stems ha−1. Mean aboveground biomass projections for the tree stratum in the three watersheds range from 143 to 199 Mt ha−1, while estimated aboveground annual biomass increments range from 4.1 to 5.3% of standing biomass.

scholarly journals Media and Foreign Policy on Pak-Afghan Relations (1997-2005): The Role of US and Pakistani Press

2020 ◽  
Vol Volume 4 (Issue 2) ◽  
pp. 454-477
Author(s):  
Ashraf Iqbal ◽  
Dr. Tanveer Hussain ◽  
Javed
Keyword(s):  
New York ◽  
Foreign Policy ◽  
American Foreign Policy ◽  
New York Times ◽  
Washington Post ◽  
War On Terrorism ◽  
Bilateral Relations ◽  
Time Period ◽  
The Us ◽  
Before And After

The main purpose of the present research is to investigate Pak-Afghan relations in the editorials of US newspapers, The Washington Post & The New York Times and Pakistani newspapers Dawn & The News related to the following issues during the period 1997-2005; A) US as a factor in Pak-Afghan relation, B) Coverage of Islam/Muslims regarding war on terrorism, C) Pakistan’s stance on Pak-Afghan bilateral relations, and D) US’s stance on Pak-Afghan bilateral relations. The time period to be examined in this proposed study spans over eight years regarding the editorial coverage of Pak-Afghan relations in the US and Pakistani leading English Press. Triangulation method based on qualitative and quantitative method was used to conduct the present research. The results show that the editorial contents of USA and Pakistani newspapers were not different regarding Pak-Afghan relations before and after 9/11. The incident of 9/11 changed the American foreign policy towards developing and least developing nations especially Muslims states like Pakistan, Afghanistan, Iraq, and Iran etc. Pakistani press highlighted the issues regarding the Pak-Afghan relations before and after 9/11 as a favorable and conducive, related to Muslim/Islam regarding war on terrorism. The study suggested that instead of the focus on military resolution of the different problems, rather social bilateral negations should be prioritized which would be long lasting and full of mutual respects and honor.

Clearcutting Central New York Northern Hardwood Stands

1989 ◽  
Vol 6 (2) ◽  
pp. 75-78 ◽  
Author(s):  
Russell S. Walters ◽  
Ralph D. Nyland
Keyword(s):  
New York ◽  
Sugar Maple ◽  
Site Occupancy ◽  
Black Cherry ◽  
Red Maple ◽  
American Beech ◽  
White Ash ◽  
Central New York ◽  
Commercial Species ◽  
Uniform Cover

Abstract Clearcutting proved effective for regenerating central New York stands that were dominated by sugar maple along with American beech, black cherry, white ash, red maple, and basswood. Findings from five stands for periods of 7-13 years following clearcutting show densities equivalent to 2,400 to 9,400 saplings of commercial species per acre on 64-100% of the milacres sampled. In each stand, a minimum of 81% of the 6.6 ft radius sample plots were stocked with at least one sapling of a commercial species, suggesting that site occupancy will be fairly complete and uniform as these stands mature. All sites contained abundant regeneration of commercial species immediately after logging, ranging from 15,000 to 57,000 seedlings per acre, but as many as 90% of these were less than 1 ft tall. The species composition generally reflected the original forest with abundant sugar maple and American beech. However, large amounts of black cherry and white ash also appeared on some sites. Many bramble seedlings germinated during the first growing season after logging and developed into a dense uniform cover by the third year. However, the brambles declined as crown closure occurred in the new stands, and disappeared before the tenth year. Clearcutting should successfully regenerate stands of New York northern hardwoods having conditions similar to those of this study. North. J. Appl. For. 6:75-78, June 1989.

Allelopathic inhibition of black cherry. II. Inhibition by woodland grass, ferns, and club moss

1977 ◽  
Vol 7 (3) ◽  
pp. 515-519 ◽  
Author(s):  
Stephen B. Horsley
Keyword(s):  
New York ◽  
Sugar Maple ◽  
Ground Cover ◽  
Black Cherry ◽  
Red Maple ◽  
Greenhouse Study ◽  
Allelopathic Interference ◽  
Allegheny Plateau ◽  
Field Plots

A comparison of paired field plots on poorly drained Allegheny hardwood sites demonstrated that the presence of hay-scented fern (Dennstaedtiapunctilobula Michx.), New York fern (Thelypterisnoveboracensis L.), short husk grass (Brachyelytrumerectum Schreb.), and club moss (Lycopodiumobscurum L.) was correlated with reduced numbers of black cherry (Prunusserotina Ehrh.) seedlings; numbers of red maple (Acerrubrum L.) seedlings were fewer where associated with the ferns and grass but not with club moss; numbers of sugar maple (Acersaccharum Marsh.) seedlings were fewer with the ferns but not grass or club moss. Height of the 10 tallest black cherry seedlings on each plot was less with the ferns and grass but not with club moss. In a greenhouse study, foliage extracts of all four ground covers inhibited growth of black cherry seedlings that had exhausted cotyledonary reserves. Allelopathic interference by herbaceous ground cover species apparently played a strong role in inhibiting establishment and growth of black cherry seedlings on poorly drained Allegheny Plateau sites.

World Economy: Prospects and Barriers for Recovery

2012 ◽  
pp. 61-83 ◽  
Author(s):  
M. Ershov
Keyword(s):  
World Economy ◽  
Western World ◽  
Short Time Period ◽  
Market Segments ◽  
Junk Bonds ◽  
The Past ◽  
Time Period ◽  
The Us ◽  
Global Liquidity ◽  
Short Time

According to the latest forecasts, it will take 10 years for the world economy to get back to “decent shape”. Some more critical estimates suggest that the whole western world will have a “colossal mess” within the next 5–10 years. Regulators of some major countries significantly and over a short time‑period changed their forecasts for the worse which means that uncertainty in the outlook for the future persists. Indeed, the intensive anti‑crisis measures have reduced the severity of the past problems, however the problems themselves have not disappeared. Moreover, some of them have become more intense — the eurocrisis, excessive debts, global liquidity glut against the backdrop of its deficit in some of market segments. As was the case prior to the crisis, derivatives and high‑risk operations with “junk” bonds grow; budget problems — “fiscal cliff” in the US — and other problems worsen. All of the above forces the regulators to take unprecedented (in their scope and nature) steps. Will they be able to tackle the problems which emerge?

Functioning of Ukrainian Bureau in Washington D. C. (March 1939 – May 1940)

2019 ◽  
pp. 142-157
Author(s):  
Danylo Kravets
Keyword(s):  
New York ◽  
The United States ◽  
College Degrees ◽  
The Us ◽  
Us Government ◽  
General Functioning ◽  
History Of ◽  
Governmental Institutions ◽  
History Of Journalism ◽  
The Military

The aim of the Ukrainian Bureau in Washington was propaganda of Ukrainian question among US government and American publicity in general. Functioning of the Bureau is not represented non in Ukrainian neither in foreign historiographies, so that’s why the main goal of presented paper is to investigate its activity. The research is based on personal papers of Ukrainian diaspora representatives (O. Granovskyi, E. Skotzko, E. Onatskyi) and articles from American and Ukrainian newspapers. The second mass immigration of Ukrainians to the US (1914‒1930s) has often been called the «military» immigration and what it lacked in numbers, it made up in quality. Most immigrants were educated, some with college degrees. The founder of the Ukrainian Bureau Eugene Skotzko was born near Western Ukrainian town of Zoloczhiv and immigrated to the United States in late 1920s after graduating from Lviv Polytechnic University. In New York he began to collaborate with OUN member O. Senyk-Hrabivskyi who gave E. Skotzko task to create informational bureau for propaganda of Ukrainian case. On March 23 1939 the Bureau was founded in Washington D. C. E. Skotzko was an editor of its Informational Bulletins. The Bureau biggest problem was lack of financial support. It was the main reason why it stopped functioning in May 1940. During 14 months of functioning Ukrainian Bureau in Washington posted dozens of informational bulletins and send it to hundreds of addressees; E. Skotzko, as a director, personally wrote to American governmental institutions and foreign diplomats informing about Ukrainian problem in Europe. Ukrainian Bureau activity is an inspiring example for those who care for informational policy of modern Ukraine.Keywords: Ukrainian small encyclopedia, Yevhen Onatsky, journalism, worldview, Ukrainian state. Keywords: Ukrainian Bureau in Washington, Eugene Skotzko, public opinion, history of journalism, diaspora.

Treatment of venous leg ulcers using bilayered living cellular construct

2020 ◽  
Vol 9 (13) ◽  
pp. 907-918
Author(s):  
Aseel Bin Sawad ◽  
Fatema Turkistani
Keyword(s):  
Healthcare System ◽  
Cost Savings ◽  
Standard Of Care ◽  
Healthcare Resource Utilization ◽  
Psychological Status ◽  
Leg Ulcers ◽  
Venous Leg Ulcers ◽  
Time Period ◽  
The Us ◽  
Economic Analyses

Background: Venous leg ulcers (VLUs) present a significant economic burden on the US healthcare system and payers (US$14.9 billion). Aim: To evaluate the quality of life (QoL) of patients with VLUs; to analyze the limitations of standard of care (SOC) for VLUs; and to explain how using bilayered living cellular construct (BLCC) with SOC for treatment of VLUs can help heal more VLUs faster (than using SOC alone) as well as help improve QoL and help reduce the burden on the US healthcare system and payers. Materials & methods: This is a review study. The search was conducted in February 2020 by way of electronic databases to find relevant articles that provided information related to QoL of patients with VLUs, limitations of SOC for VLUs and economic analyses of using BLCC for treatment of VLUs. Results: VLUs impact patients’ physical, functional and psychological status and reduce QoL. A total 75% of VLU patients who used SOC alone failed to achieve healing in a timely fashion, which led to increased healthcare costs and healthcare resource utilization. Although the upfront cost is high, the greater effectiveness of BLCC offsets the added cost of the product during the time period of the studies. Therefore, BLCC helps to improve the QoL of VLU patients. As an example, for every 100 VLU patients in a healthcare plan, the use of BLCC can create cost savings of US$1,349,829.51. Conclusion: Payers’ coverage of BLCC results in reduction of the overall medical cost for treating VLU patients.

Decay of birdseye sugar maple (Acer Saccharum) and curly red maple (Acer Rubrum)

2020 ◽  
Vol 52 (3) ◽  
pp. 292-297
Author(s):  
Tara Lee Bal ◽  
Katherine Elizabeth Schneider ◽  
Dana L. Richter
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Acer Rubrum ◽  
Red Maple

Growth responses of seven major co-occurring tree species of the northeastern United States to elevated CO2

1990 ◽  
Vol 20 (9) ◽  
pp. 1479-1484 ◽  
Author(s):  
F. A. Bazzaz ◽  
J. S. Coleman ◽  
S. R. Morse
Keyword(s):  
Tree Species ◽  
Sugar Maple ◽  
Growth Enhancement ◽  
Black Cherry ◽  
Red Maple ◽  
Growth Responses ◽  
White Pine ◽  
American Beech ◽  
Harvard Forest ◽  
Paper Birch

We examined how elevated CO2 affected the growth of seven co-occurring tree species: American beech (Fagusgrandifolia Ehrh.), paper birch (Betulapapyrifera Marsh.), black cherry (Prunusserotina Ehrh.), white pine (Pinusstrobus L.), red maple (Acerrubrum L.), sugar maple (Acersaccharum Marsh.), and eastern hemlock (Tsugacanadensis (L.) Carr). We also tested whether the degree of shade tolerance of species and the age of seedlings affected plant responses to enhanced CO2 levels. Seedlings that were at least 1 year old, for all species except beech, were removed while dormant from Harvard Forest, Petersham, Massachusetts. Seeds of red maple and paper birch were obtained from parent trees at Harvard Forest, and seeds of American beech were obtained from a population of beeches in Nova Scotia. Seedlings and transplants were grown in one of four plant growth chambers for 60 d (beech, paper birch, red maple, black cherry) or 100 d (white pine, hemlock, sugar maple) under CO2 levels of 400 or 700 μL•L−1. Plants were then harvested for biomass and growth determinations. The results showed that the biomass of beech, paper birch, black cherry, sugar maple, and hemlock significantly increased in elevated CO2, but the biomass of red maple and white pine only marginally increased in these conditions. Furthermore, there were large differences in the magnitude of growth enhancement by increased levels of CO2 between species, so it seems reasonable to predict that one consequence of rising levels of CO2 may be to increase the competitive ability of some species relative to others. Additionally, the three species exhibiting the largest increase in growth with increased CO2 concentrations were the shade-tolerant species (i.e., beech, sugar maple, and hemlock). Thus, elevated CO2 levels may enhance the growth of relatively shade-tolerant forest trees to a greater extent than growth of shade-intolerant trees, at least under the light and nutrient conditions of this experiment. We found no evidence to suggest that the age of tree seedlings greatly affected their response to elevated CO2 concentrations.

scholarly journals Variability of springtime transpacific pollution transport during 2000–2006: the INTEX-B mission in the context of previous years

2010 ◽  
Vol 10 (3) ◽  
pp. 1345-1359 ◽  
Author(s):  
G. G. Pfister ◽  
L. K. Emmons ◽  
D. P. Edwards ◽  
A. Arellano ◽  
T. Campos ◽  
...  
Keyword(s):  
Transport Model ◽  
Pollution Transport ◽  
Chemistry Transport Model ◽  
Pollution Levels ◽  
Annual Variability ◽  
Source Regions ◽  
Time Period ◽  
The Pacific ◽  
The Us ◽  
Transport Experiment

Abstract. We analyze the transport of pollution across the Pacific during the NASA INTEX-B (Intercontinental Chemical Transport Experiment Part B) campaign in spring 2006 and examine how this year compares to the time period for 2000 through 2006. In addition to aircraft measurements of carbon monoxide (CO) collected during INTEX-B, we include in this study multi-year satellite retrievals of CO from the Measurements of Pollution in the Troposphere (MOPITT) instrument and simulations from the chemistry transport model MOZART-4. Model tracers are used to examine the contributions of different source regions and source types to pollution levels over the Pacific. Additional modeling studies are performed to separate the impacts of inter-annual variability in meteorology and dynamics from changes in source strength. Interannual variability in the tropospheric CO burden over the Pacific and the US as estimated from the MOPITT data range up to 7% and a somewhat smaller estimate (5%) is derived from the model. When keeping the emissions in the model constant between years, the year-to-year changes are reduced (2%), but show that in addition to changes in emissions, variable meteorological conditions also impact transpacific pollution transport. We estimate that about 1/3 of the variability in the tropospheric CO loading over the contiguous US is explained by changes in emissions and about 2/3 by changes in meteorology and transport. Biomass burning sources are found to be a larger driver for inter-annual variability in the CO loading compared to fossil and biofuel sources or photochemical CO production even though their absolute contributions are smaller. Source contribution analysis shows that the aircraft sampling during INTEX-B was fairly representative of the larger scale region, but with a slight bias towards higher influence from Asian contributions.

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