Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 13 de 13
Filter
1.
Biol Rev Camb Philos Soc ; 98(4): 1118-1141, 2023 08.
Article in English | MEDLINE | ID: mdl-36879466

ABSTRACT

Although the importance of natural habitats to pollinator diversity is widely recognized, the value of forests to pollinating insects has been largely overlooked in many parts of the world. In this review, we (i) establish the importance of forests to global pollinator diversity, (ii) explore the relationship between forest cover and pollinator diversity in mixed-use landscapes, and (iii) highlight the contributions of forest-associated pollinators to pollination in adjacent crops. The literature shows unambiguously that native forests support a large number of forest-dependent species and are thus critically important to global pollinator diversity. Many pollinator taxa require or benefit greatly from resources that are restricted to forests, such as floral resources provided by forest plants (including wind-pollinated trees), dead wood for nesting, tree resins, and various non-floral sugar sources (e.g. honeydew). Although landscape-scale studies generally support the conclusion that forests enhance pollinator diversity, findings are often complicated by spatial scale, focal taxa, landscape context, temporal context, forest type, disturbance history, and external stressors. While some forest loss can be beneficial to pollinators by enhancing habitat complementarity, too much can result in the near-elimination of forest-associated species. There is strong evidence from studies of multiple crop types that forest cover can substantially increase yields in adjacent habitats, at least within the foraging ranges of the pollinators involved. The literature also suggests that forests may have enhanced importance to pollinators in the future given their role in mitigating the negative effects of pesticides and climate change. Many questions remain about the amount and configuration of forest cover required to promote the diversity of forest-associated pollinators and their services within forests and in neighbouring habitats. However, it is clear from the current body of knowledge that any effort to preserve native woody habitats, including the protection of individual trees, will benefit pollinating insects and help maintain the critical services they provide.


Subject(s)
Forests , Pollination , Animals , Bees , Ecosystem , Crops, Agricultural , Insecta , Trees
2.
Laryngoscope ; 131(11): 2471-2477, 2021 11.
Article in English | MEDLINE | ID: mdl-33847392

ABSTRACT

OBJECTIVES/HYPOTHESIS: The purpose of this study was to evaluate the efficacy and safety of at home drain removal in head and neck surgery patients. METHODS: The study population included patients who underwent head and neck surgery at an academic tertiary care center between February 2020 and November 2020 and were discharged with one to four drains with instructions for home removal. Prior to discharge, patients received thorough drain removal education. Patients were prospectively followed to evaluate for associated outcomes. RESULTS: One hundred patients were evaluated in the study. There was record for ninety-seven patients receiving education at discharge. The most common methods of education were face-to-face education and written instructions with educational video link provided. Of 123 drains upon discharge, 110 drains (89.4%) were removed at home while 13 (10.6%) were removed in office. Most drains were located in the neck (86.4%). There was one seroma, two hematomas, two drain site infections, and five ED visits; however, none of these complications were directly associated with the action of drain removal at home. Calculated cost savings for travel and lost wages was $259.82 per round trip saved. CONCLUSIONS: The results demonstrate that home drain removal can provide a safe and efficacious option for patients following head and neck surgery. This approach was safe and associated with patient cost savings and better utilization of provider's time. Furthermore, patients and healthcare providers avoided additional in-person encounters and exposures during the COVID-19 pandemic. Our findings warrant further investigation into cost savings and formal patient satisfaction associated with home drain removal. LEVEL OF EVIDENCE: 4 Laryngoscope, 131:2471-2477, 2021.


Subject(s)
Device Removal/adverse effects , Drainage/instrumentation , Home Care Services/statistics & numerical data , Neck Dissection/methods , Patient Discharge/standards , Postoperative Care/instrumentation , COVID-19/diagnosis , COVID-19/epidemiology , COVID-19/transmission , COVID-19/virology , Device Removal/economics , Drainage/methods , Efficiency , Emergency Service, Hospital/statistics & numerical data , Female , Hematoma/epidemiology , Hematoma/etiology , Home Care Services/trends , Humans , Infections/epidemiology , Infections/etiology , Male , Middle Aged , Neck Dissection/statistics & numerical data , Patient Education as Topic/standards , Patient Education as Topic/trends , Postoperative Care/statistics & numerical data , Prospective Studies , SARS-CoV-2/genetics , Safety , Seroma/epidemiology , Seroma/etiology , Time Factors
3.
Science ; 363(6424): 282-284, 2019 01 18.
Article in English | MEDLINE | ID: mdl-30655441

ABSTRACT

Land-use change threatens global biodiversity and may reshape the tree of life by favoring some lineages over others. Whether phylogenetic diversity loss compromises ecosystem service delivery remains unknown. We address this knowledge gap using extensive genomic, community, and crop datasets to examine relationships among land use, pollinator phylogenetic structure, and crop production. Pollinator communities in highly agricultural landscapes contain 230 million fewer years of evolutionary history; this loss was strongly associated with reduced crop yield and quality. Our study links landscape-mediated changes in the phylogenetic structure of natural communities to the disruption of ecosystem services. Measuring conservation success by species counts alone may fail to protect ecosystem functions and the full diversity of life from which they are derived.


Subject(s)
Bees/classification , Crop Production , Phylogeny , Pollination , Agriculture , Animals , Biodiversity , Malus , New York
4.
Health Equity ; 2(1): 216-222, 2018.
Article in English | MEDLINE | ID: mdl-30283870

ABSTRACT

Purpose: There is a paucity of data on barriers to mental health treatment utilization among residents of Wards 7 and 8 in Washington, DC, despite exposure to many environmental factors that are associated with poor mental health outcomes and the high prevalence of mental health problems among residents. The objective of this study was to examine barriers to mental healthcare utilization among residents of Wards 7 and 8. Methods: This study included semi-structured, in-depth interviews with five key informants who lived or spent significant time in Wards 7 or 8 in Washington, DC, which are the wards served by Paving the Way MSI, a behavioral health clinic that served as a partner organization in the study. Results: Barriers to mental health treatment utilization existed at a variety of social-ecological levels, including the individual/interpersonal level, the provider/mental health system level, the community level, and the societal level. Major barriers included fear and trust/distrust in the medical system, lack of social support, the model of mental healthcare, lack of patient-centered care, limited access to mental health services, stigma of mental illness and mental health treatment, and poverty. Conclusion: This study highlights the need to address barriers to mental health treatment utilization at multiple social-ecological levels. Future studies should examine perspectives from residents with mental health problems in these wards to gain a more thorough understanding of the barriers to treatment. Funding is needed to support efforts to increase mental health treatment utilization among residents of Wards 7 and 8.

5.
Nat Ecol Evol ; 2(2): 279-287, 2018 02.
Article in English | MEDLINE | ID: mdl-29335575

ABSTRACT

Many scientific disciplines are currently experiencing a 'reproducibility crisis' because numerous scientific findings cannot be repeated consistently. A novel but controversial hypothesis postulates that stringent levels of environmental and biotic standardization in experimental studies reduce reproducibility by amplifying the impacts of laboratory-specific environmental factors not accounted for in study designs. A corollary to this hypothesis is that a deliberate introduction of controlled systematic variability (CSV) in experimental designs may lead to increased reproducibility. To test this hypothesis, we had 14 European laboratories run a simple microcosm experiment using grass (Brachypodium distachyon L.) monocultures and grass and legume (Medicago truncatula Gaertn.) mixtures. Each laboratory introduced environmental and genotypic CSV within and among replicated microcosms established in either growth chambers (with stringent control of environmental conditions) or glasshouses (with more variable environmental conditions). The introduction of genotypic CSV led to 18% lower among-laboratory variability in growth chambers, indicating increased reproducibility, but had no significant effect in glasshouses where reproducibility was generally lower. Environmental CSV had little effect on reproducibility. Although there are multiple causes for the 'reproducibility crisis', deliberately including genetic variability may be a simple solution for increasing the reproducibility of ecological studies performed under stringently controlled environmental conditions.


Subject(s)
Brachypodium/genetics , Genotype , Medicago truncatula/genetics , Research Design , Brachypodium/growth & development , Environment , Europe , Medicago truncatula/growth & development , Reproducibility of Results , Research Design/statistics & numerical data
6.
Biol Lett ; 13(11)2017 11.
Article in English | MEDLINE | ID: mdl-29187605

ABSTRACT

Plant-bee visitor communities are complex networks. While studies show that deleting nodes alters network topology, predicting these changes in the field remains difficult. Here, a simple trait-based approach is tested for predicting bee community composition following disturbance. I selected six fields with mixed cover of flower species with shallow (open) and deep (tube) nectar access, and removed all flowers or flower heads of species of each trait in different plots paired with controls, then observed bee foraging and composition. I compared the bee community in each manipulated plot with bees on the same flower species in control plots. The bee morphospecies composition in manipulations with only tube flowers remaining was the same as that in the control plots, while the bee morphospecies on only open flowers were dissimilar from those in control plots. However, the proportion of short- and long-tongued bees on focal flowers did not differ between control and manipulated plots for either manipulation. So, bees within some functional groups are more strongly linked to their floral trait partners than others. And, it may be more fruitful to describe expected bee community compositions in terms of relative proportions of relevant ecological traits than species, particularly in species-diverse communities.


Subject(s)
Animal Distribution , Bees , Flowers , Pollination , Adaptation, Biological , Animals , Ecosystem , Population Dynamics
7.
Med Care Res Rev ; 74(3): 286-310, 2017 06.
Article in English | MEDLINE | ID: mdl-27026685

ABSTRACT

While implementation of the Patient Protection and Affordable Care Act brings significant opportunities for safety net providers (SNP), local systems vary in how well they adapt to the rapidly evolving environment. Collaboration may enhance SNP capacity to leverage opportunities in the health reform era. Our study examines key opportunities and challenges SNPs face under health reform and how providers use collaboration as a strategy to adapt to the new environment. A qualitative study of 78 executives at safety net organizations identified six priorities that pose both opportunities and challenges for SNP, and around which collaboration is used as a strategy to achieve common goals: Medicaid expansion, outreach and enrollment, capacity and access, health system transformation, health insurance exchanges, and reductions in government funding. Three types of collaborations emerged: policy and advocacy, community action, and practice-based. Types of collaborations and stakeholders involved appeared to vary by priority.


Subject(s)
Cooperative Behavior , Delivery of Health Care/organization & administration , Health Care Reform/organization & administration , Safety-net Providers/organization & administration , Ambulatory Care Facilities/organization & administration , Hospitals , Humans , Interviews as Topic , Medicaid , Patient Protection and Affordable Care Act , Qualitative Research , United States , Vulnerable Populations
8.
Perspect Sex Reprod Health ; 48(1): 17-24, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26887335

ABSTRACT

CONTEXT: The confidentiality of family planning services remains a high priority to adolescents, but barriers to implementing confidentiality and privacy practices exist in settings designed for teenagers who are medically underserved, including federally qualified health centers (FQHCs). METHODS: A sample of 423 FQHCs surveyed in 2011 provided information on their use of five selected privacy and confidentiality practices, which were examined separately and combined into an index. Regression modeling was used to assess whether various state policies and organizational characteristics were associated with FQHCs' scores on the index. In-depth case studies of six FQHCs were conducted to provide additional contextual information. RESULTS: Among FQHCs reporting on confidentiality, most reported providing written or verbal information regarding adolescents' rights to confidential care (81%) and limiting access to family planning and medical records to protect adolescents' confidentiality (84%). Far fewer reported maintaining separate medical records for family planning (10%), using a security block on electronic medical records to prevent disclosures (43%) or using separate contact information for communications regarding family planning services (50%). Index scores were higher among FQHCs that received Title X funding than among those that did not (coefficient, 0.70) and among FQHCs with the largest patient volumes than among those with the smallest caseloads (0.43). Case studies highlighted how a lack of guidelines and providers' confusion over relevant laws present a challenge in offering confidential care to adolescents. CONCLUSIONS: The organizational practices used to ensure adolescent family planning confidentiality in FQHCs are varied across organizations.


Subject(s)
Adolescent Health Services , Confidentiality , Family Planning Services , Privacy , Quality Indicators, Health Care/statistics & numerical data , Adolescent , Adolescent Health/statistics & numerical data , Adolescent Health Services/organization & administration , Adolescent Health Services/statistics & numerical data , Family Planning Policy , Family Planning Services/organization & administration , Family Planning Services/standards , Family Planning Services/statistics & numerical data , Female , Health Services Accessibility/organization & administration , Health Services Accessibility/statistics & numerical data , Humans , Male , United States
9.
J Adolesc Health ; 57(1): 87-93, 2015 Jul.
Article in English | MEDLINE | ID: mdl-26095411

ABSTRACT

PURPOSE: The purpose of this article was to examine the role of community health centers (CHCs) in providing comprehensive family planning services to adolescents, looking at the range of services offered and factors associated with provision of these services. METHODS: This study employed a mixed methods approach comprising a national survey of CHCs and six in-depth case studies of health centers to examine the organization and delivery of family planning services. We developed an adolescent family planning index comprising nine family planning services specifically tailored to adolescents. We analyzed the influence of state-level family planning policies, funding for adolescents, and organizational characteristics on the provision of these services in CHCs. The case studies identified barriers to the provision of family planning to adolescent patients. RESULTS: The survey found substantial variation in the provision of family planning services at CHCs, with a mean of 6.33 out of a maximum score of 13 on the family planning adolescent services index. Title X funding and location within a favorable state policy environment were significantly associated with higher scores on the family planning adolescent services index (p value < .001 and .002, respectively). Case studies revealed barriers to adolescent family planning, including lack of funding, lack of knowledge, and limitations on school-based clinical services. CONCLUSIONS: CHCs have the opportunity to play a significant role in providing high-quality family planning to low-income, medically underserved adolescents. Additional funding, resources, and a favorable policy climate would further improve CHCs' ability to serve the family planning needs of this special patient population.


Subject(s)
Adolescent Health Services/organization & administration , Community Health Centers/organization & administration , Delivery of Health Care/organization & administration , Family Planning Services/organization & administration , Federal Government , Adolescent , Community Health Centers/economics , Delivery of Health Care/economics , Family Planning Services/economics , Health Care Surveys , Humans , Organizational Case Studies , United States , Vulnerable Populations
10.
Womens Health Issues ; 25(3): 202-8, 2015.
Article in English | MEDLINE | ID: mdl-25965153

ABSTRACT

BACKGROUND: Family planning and related reproductive health services are essential primary care services for women. Access is limited for women with low incomes and those living in medically underserved areas. Little information is available on how federally funded health centers organize and provide family planning services. METHODS: This was a mixed methods study of the organization and delivery of family planning services in federally funded health centers across the United States. A national survey was developed and administered (n = 423) and in-depth case studies were conducted of nine health centers to obtain detailed information on their approach to family planning. FINDINGS: Study findings indicate that health centers utilize a variety of organizational models and staffing arrangements to deliver family planning services. Health centers' family planning offerings are organized in one of two ways, either a separate service with specific providers and clinic times or fully integrated with primary care. Health centers experience difficulties in providing a full range of family planning services. MAJOR CHALLENGES: Major challenges include funding limitations; hiring obstetricians/gynecologists, counselors, and advanced practice clinicians; and connecting patients to specialized services not offered by the health center. CONCLUSIONS: Health centers play an integral role in delivering primary care and family planning services to women in medically underserved communities. Improving the accessibility and comprehensiveness of family planning services will require a combination of additional direct funding, technical assistance, and policies that emphasize how health centers can incorporate quality family planning as a fundamental element of primary care.


Subject(s)
Community Health Centers/organization & administration , Delivery of Health Care/organization & administration , Family Planning Services/organization & administration , Health Services Accessibility , Primary Health Care/organization & administration , Family Planning Services/statistics & numerical data , Female , Humans , Medically Underserved Area , Poverty , Pregnancy , Qualitative Research , Residence Characteristics , Sex Education , Surveys and Questionnaires , United States
11.
SSM Popul Health ; 1: 48-55, 2015 Dec.
Article in English | MEDLINE | ID: mdl-29349121

ABSTRACT

The Patient Protection and Affordable Care Act (ACA) addresses use of clinical preventive services relative to evidence-based guidelines by mandating that most health insurance plans provide coverage without cost-sharing for services that receive an A or B rating. However, knowledge about and positive attitudes towards guidelines are extremely low. This study was a population-based randomized experiment to examine beliefs about and intentions to adhere to screening guidelines for the Prostate Specific Antigen (PSA) and Pap tests. The study had two objectives: (1) test reactions to and understanding of guidelines, and (2) experimentally compare receptivity to messages to promote PSA and Pap test recommendations. We first surveyed a population-based sample of (1) US adults age 18 and over, (2) subsample of women aged 65 or younger, (3) subsample of men aged 40 or older. A sample of 2923 completed an initial questionnaire. Next a subset of participants meeting eligibility criteria were recruited from the population-based sample into a message testing experiment: (1) women aged 65 or younger, (2) and men aged 40 or older. Participants meeting these eligibility requirements were randomized to gain, loss, or balanced PSA (men) or Pap test (women) message stimulus conditions and followed for 8 weeks. Data were collected through the GfK Custom Research panel. A total of 2401 were eligible, 2321 completed the baseline, and 1730 completed follow up. Mixed effect regression models revealed that higher receptivity to messages was associated with greater intentions to seek cancer information and to speak to a Doctor about PSA and Pap tests. The loss frame was associated with higher intentions to speak to friends and family about PSA and Pap tests. Finally, perceived importance and personal understanding of guidelines predicted intentions to seek more information about them. This study contributes to evidence on how best to inform and engage consumers regarding preventive services.

12.
Appl Environ Microbiol ; 80(23): 7378-87, 2014 Dec.
Article in English | MEDLINE | ID: mdl-25239900

ABSTRACT

Studies of newly emerged Apis mellifera worker bees have demonstrated that their guts are colonized by a consistent core microbiota within several days of eclosure. We conducted experiments aimed at illuminating the transmission routes and spatiotemporal colonization dynamics of this microbiota. Experimental groups of newly emerged workers were maintained in cup cages and exposed to different potential transmission sources. Colonization patterns were evaluated using quantitative real-time PCR (qPCR) to assess community sizes and using deep sequencing of 16S rRNA gene amplicons to assess community composition. In addition, we monitored the establishment of the ileum and rectum communities within workers sampled over time from natural hive conditions. The study verified that workers initially lack gut bacteria and gain large characteristic communities in the ileum and rectum within 4 to 6 days within hives. Typical communities, resembling those of workers within hives, were established in the presence of nurse workers or nurse worker fecal material, and atypical communities of noncore or highly skewed compositions were established when workers were exposed only to oral trophallaxis or hive components (comb, honey, bee bread). The core species of Gram-negative bacteria, Snodgrassella alvi, Gilliamella apicola, and Frischella perrara, were dependent on the presence of nurses or hindgut material, whereas some Gram-positive species were more often transferred through exposure to hive components. These results indicate aspects of the colony life cycle and behavior that are key to the propagation of the characteristic honey bee gut microbiota.


Subject(s)
Bacteria/classification , Bees/microbiology , Animals , Bacteria/genetics , Cluster Analysis , DNA, Bacterial/chemistry , DNA, Bacterial/genetics , DNA, Ribosomal/chemistry , DNA, Ribosomal/genetics , Gastrointestinal Microbiome , Gastrointestinal Tract/microbiology , High-Throughput Nucleotide Sequencing , Molecular Sequence Data , Phylogeny , RNA, Ribosomal, 16S/genetics , Real-Time Polymerase Chain Reaction , Sequence Analysis, DNA , Spatio-Temporal Analysis
13.
PLoS One ; 8(7): e69855, 2013.
Article in English | MEDLINE | ID: mdl-23875005

ABSTRACT

OBJECTIVE: To assess the extent to which the observed racial disparities in cardiac revascularization use can be explained by the variation across counties where patients live, and how the within-county racial disparities is associated with the local hospital capacity. DATA SOURCES: Administrative data from Pennsylvania Health Care Cost Containment Council (PHC4) between 1995 and 2006. STUDY DESIGN: The study sample included 207,570 Medicare patients admitted to hospital for acute myocardial infarction (AMI). We identified the use of coronary artery bypass graft (CABG) and percutaneous coronary intervention (PCI) procedures within three months after the patient's initial admission for AMI. Multi-level hierarchical models were used to determine the extent to which racial disparities in procedure use were attributable to the variation in local hospital capacity. PRINCIPAL FINDINGS: Blacks were less likely than whites to receive CABG (9.1% vs. 5.8%; p<0.001) and PCI (15.7% vs. 14.2%; p<0.001). The state-level racial disparity in use rate decreases for CABG, and increases for PCI, with the county adjustment. Higher number of revascularization hospitals per 1,000 AMI patients was associated with smaller within-county racial differences in CABG and PCI rates. Meanwhile, very low capacity of catheterization suites and AMI hospitals contributed to significantly wider racial gap in PCI rate. CONCLUSIONS: County variation in cardiac revascularization use rates helps explain the observed racial disparities. While smaller hospital capacity is associated with lower procedure rates for both racial groups, the impact is found to be larger on blacks. Therefore, consequences of fewer medical resources may be particularly pronounced for blacks, compared with whites.


Subject(s)
Angioplasty, Balloon, Coronary/statistics & numerical data , Coronary Artery Bypass/statistics & numerical data , Myocardial Infarction/surgery , Aged , Black People , Female , Hospitals/statistics & numerical data , Humans , Male , Middle Aged , United States , White People
SELECTION OF CITATIONS
SEARCH DETAIL
...