Leaf habit, phenology, and longevity of 11 forest understory plant species in Algonquin State Forest, northwest Connecticut, USA

Botany ◽  
2008 ◽  
Vol 86 (5) ◽  
pp. 457-465 ◽  
Author(s):  
Jack T. Tessier

Many functional attributes of plant species are predicated on their leaf habit. To fully understand the way that plant species coexist and respond to future conditions, it is important to have a thorough understanding of the leaf habit, phenology, and longevity of common forest plant species. I quantified these traits in 11 forest understory species in the Algonquin State Forest of northwestern Connecticut, USA, by labeling and monitoring individual leaves of three replicates of each species over a period of 3 years. While clear patterns exist within the evergreen, wintergreen, seasonalgreen, deciduous, and spring-ephemeral groupings, significant differences exist within and among these groups, including differences in the timing of leafing and senescence, and minimum leaf longevity. Because the impact of local and global disturbance is often predicated on the phenological and life-history traits of species, these differences may be important to the responses that these species have to future disturbance. The size of leaf-supporting structures was positively correlated with leaf longevity across species, supporting a predictive connection between construction costs and leaf longevity. Additionally, the leaf habit of Oxalis acetosella L. at this study site is significantly different from that observed previously in the Catskill Mountains, New York State, USA. These differences may be due to local habitat conditions or genetic predisposition.

Dendrobiology ◽  
2020 ◽  
pp. 58-80
Author(s):  
Piotr Karolewski ◽  
Adrian Łukowski ◽  
Dawid Adamczyk ◽  
Michał Żmuda ◽  
Marian J. Giertych ◽  
...  

The quality of leaves as food for insects is affected both by plant species and the light conditions present during growth. Little information exists concerning the impact of these factors on the diversity of insects that live in the forest understory. We studied arthropod fauna on six understory plant species commonly occurring in Europe. Different groups of herbivorous insects were identified, as well as predatory insects and arachnids. We analysed the influence of both plant species and light conditions during growth (low light; high light) on the species spectrum, and the number of insect specimens present. The resulting data were investigated in relation to the susceptibility of plant leaves to feeding by folivorous insects, as determined in earlier studies. We compared the similarity in species diversity, based on the Sørensen’s coefficient, and discussed the potential causes of observed differences in leaf damages. We found a total of 153 arthropod taxa on studied plants, under both light conditions. Corylus avellana and Prunus serotina, species characterized by greater leaf damage, have a wider diversity of arthropod species, and a greater number of herbivorous insects. Generally, light conditions had a greater effect on arthropod abundance than on species diversity. For two plant species, C. avellana and P. serotina, light conditions strongly, but reversely, influenced the total number of insects and, thus, the extent of leaf damage. The number and abundance of zoophagous species, and ratio to folivores (except C. avellana) are associated more with plant species than with light conditions


2017 ◽  
Vol 27 (6) ◽  
pp. 694-699 ◽  
Author(s):  
Nicolas W. Villelli ◽  
Hong Yan ◽  
Jian Zou ◽  
Nicholas M. Barbaro

OBJECTIVESeveral similarities exist between the Massachusetts health care reform law of 2006 and the Affordable Care Act (ACA). The authors’ prior neurosurgical research showed a decrease in uninsured surgeries without a significant change in surgical volume after the Massachusetts reform. An analysis of the payer-mix status and the age of spine surgery patients, before and after the policy, should provide insight into the future impact of the ACA on spine surgery in the US.METHODSUsing the Massachusetts State Inpatient Database and spine ICD-9-CM procedure codes, the authors obtained demographic information on patients undergoing spine surgery between 2001 and 2012. Payer-mix status was assigned as Medicare, Medicaid, private insurance, uninsured, or other, which included government-funded programs and workers’ compensation. A comparison of the payer-mix status and patient age, both before and after the policy, was performed. The New York State data were used as a control.RESULTSThe authors analyzed 81,821 spine surgeries performed in Massachusetts and 248,757 in New York. After 2008, there was a decrease in uninsured and private insurance spine surgeries, with a subsequent increase in the Medicare and “other” categories for Massachusetts. Medicaid case numbers did not change. This correlated to an increase in surgeries performed in the age group of patients 65–84 years old, with a decrease in surgeries for those 18–44 years old. New York showed an increase in all insurance categories and all adult age groups.CONCLUSIONSAfter the Massachusetts reform, spine surgery decreased in private insurance and uninsured categories, with the majority of these surgeries transitioning to Medicare. Moreover, individuals who were younger than 65 years did not show an increase in spine surgeries, despite having greater access to health insurance. In a health care system that requires insurance, the decrease in private insurance is primarily due to an increasing elderly population. The Massachusetts model continues to show that this type of policy is not causing extreme shifts in the payer mix, and suggests that spine surgery will continue to thrive in the current US health care system.


Energy Policy ◽  
2005 ◽  
Vol 33 (3) ◽  
pp. 337-347 ◽  
Author(s):  
Pradeep J Tharakan ◽  
Timothy A Volk ◽  
Christopher A Lindsey ◽  
Lawrence P Abrahamson ◽  
Edwin H White

Author(s):  
David A. Call ◽  
Guy A. Flynt

AbstractSnow has numerous effects on traffic, including reduced traffic volumes, greater crash risk, and increased travel times. This research examines how snow affects crash risk, traffic volume, and toll revenue on the New York State Thruway. Daily data from January for a ten-year period (2010-2019) were analyzed for the Thruway from the Pennsylvania state line in western New York to Syracuse.Anywhere from 35-50 percent of crashes are associated with inclement weather, with smaller impacts, proportionally, in areas with greater traffic volumes. As expected, snow was almost always involved when weather was a factor. “Unsafe speed” was the most common cause of crashes in inclement weather with all other factors (e.g., animals, drowsiness) much less likely to play a role. The percentage of crashes resulting in an injury did not change significantly with inclement conditions when compared to crashes occurring in fair conditions, and there were too few fatal crashes to make any inferences about them.Daily snowfall rates predicted about 30 percent of the variation in crash numbers, with every 5.1 cm of snowfall resulting in an additional crash, except in Buffalo where 5.1 cm of snow resulted in an additional 2.6 crashes. Confirming earlier results, daily snowfall had a large impact on passenger vehicle counts while commercial vehicle counts were less affected. Revenue data showed a similar pattern, with passenger revenue typically decreasing by 3-5 percent per 2.5 cm of snow, while commercial revenue decreases were 1-4 percent per 2.5 cm of snow.


PEDIATRICS ◽  
1989 ◽  
Vol 83 (5) ◽  
pp. 903-905
Author(s):  
Sandra Hernandez

The ultimate objective of newborn screening for sickle cell disease should be twofold. The first essential step is the identification of the infants at risk. This has been effectively done in New York state as of 1975 through the New York State Newborn Screening Program. However, identifying these children is not enough. Second is the much more complicated task of providing comprehensive follow-up care for families whose children are affected by the disease, including the much needed psychosocial services. This area continues to be sorely neglected. The increased risk of death due to overwhelming infection in the first 3 years of life for children with sickle cell disease has been noted in the literature. When there is no specialized care, 15% to 20% do not survive. Therefore, it is essential for knowledgeable staff to make contact and begin to develop a trusting relationship as soon as possible with parents of infants born with sickle cell disease. Prophylactic penicillin and pneumococcal vaccination can reduce mortality during the early years. Family involvement with a consistent, available team of health care providers is pivotal in understanding this chronic illness and coping effectively with this extraordinary stress. Our staff is available by telephone for consultations with patients or other medical staff during clinic and emergency room visits and hospitalizations. One element that is clear in our experience at the St Luke's-Roosevelt Hospital Sickle Cell Center in New York City is that adjustment to this chronic illness is a lifelong process. One or two counseling sessions at the time of diagnosis are not sufficient to enable families to fully understand the information given or to realize the impact of having a child with a chronic illness.


2021 ◽  
Vol 49 (4) ◽  
pp. 495-547
Author(s):  
Yusun Kim

In 2005, New York (NY) state capped the growth of county-level Medicaid spending, which abruptly decreased counties’ Medicaid outlay in both relative and absolute terms. This study exploits this discontinuity in county Medicaid outlay to estimate the impact of the relief mandate policy on county budgets and property tax levies. It bridges a gap in the public finance literature by addressing local government responses to a sudden decrease in the outlay of a large mandatory spending category. We find a compositional change but no income effect on non-Medicaid spending. However, the policy reduced the effective property tax rate significantly by 6.6 to 8.1 percent on average among affected NY counties after the enactment of the policy relative to control counties. This study advances our understanding of local fiscal responses to an intergovernmental fiscal policy that changes how state and local governments share the costs of a large public social insurance program.


Pharmacy ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 7 ◽  
Author(s):  
Tanya Singh ◽  
Renae L. Smith-Ray ◽  
Michael Taitel

The 2019 measles outbreak was the worst since the USA eliminated measles in 2000. This paper presents the vaccination trends for a large chain-pharmacy, Walgreens, and examines the estimated vaccination capacity and impact of pharmacist privilege policies across states. Specifically, we estimated the number of people who could have been vaccinated in eight states with reduced or no measles, mumps, and rubella (MMR) vaccination privilege during the study period January–June, 2019. During the study period, Walgreens pharmacists administered MMR vaccines to 62,526 patients, a 231.9% increase. If pharmacists had been permitted to vaccinate against measles in the eight states investigated, Walgreens pharmacies would have administered between 12,404 and 36,551 additional vaccinations during that time. We also estimated all chain pharmacies’ capacity to vaccinate in one state that was severely impacted by the measles outbreak, New York, using a range from normal pharmacy operating conditions to maximum capacity. Assuming sufficient demand, it was estimated that chain pharmacies in New York State would have the capacity to vaccinate between 47,688 and 174,856 patients daily, achieving MMR vaccination (first dose) of the measles-susceptible population within 8–28 days. Overall, this study demonstrates the public health value of pharmacist vaccination privilege during a nation-wide outbreak of measles.


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