Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 89
Filtrar
1.
Health Aff Sch ; 2(1): qxad094, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38756396

RESUMO

Health care performance metrics are offered predominantly in terms of outcomes, processes, or structural components of health care delivery. However, measurement is limited by variability in data sources, definitions, and workarounds. The American College of Surgeons has recently developed a new type of performance metric known as a "programmatic measure". These metrics align structures, processes, and outcomes to better coordinate quality measurement with support of frontline care teams. In this multifaceted way, these measures differ from current "single" measures such as targeting surgical site infection. The thematic focus of these measures and alignment of structure-resource components to support processes and outcomes also sets these measures apart from contemporary composite measures. Importantly, structural elements of these measures reflect minimum resources required for patient care, addressing staffing and resource barriers felt by local institutions in addressing numerous existing quality metrics. These metrics will streamline quality reporting to improve care navigation for patients. Clinicians will find more appropriately aligned goals and responsibilities, resulting in increased teamwork and communication. These measures are designed to address the current burdens of overabundant metrics, priority misalignment, and low resources in a patient-centric fashion to better align health care quality and measurement.

2.
Surg Endosc ; 38(6): 3346-3352, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38693306

RESUMO

BACKGROUND: There is no consensus on whether laparoscopic experience should be a prerequisite for robotic training. Further, there is limited information on skill transference between laparoscopic and robotic techniques. This study focused on the general surgery residents' learning curve and skill transference within the two minimally invasive platforms. METHODS: General surgery residents were observed during the performance of laparoscopic and robotic inguinal hernia repairs. The recorded data included objective measures (operative time, resident participation indicated by percent active time on console or laparoscopy relative to total case time, number of handoffs between the resident and attending), and subjective evaluations (preceptor and trainee assessments of operative performance) while controlling for case complexity, patient comorbidities, and residents' prior operative experience. Wilcoxon two-sample tests and Pearson Correlation coefficients were used for analysis. RESULTS: Twenty laparoscopic and forty-four robotic cases were observed. Mean operative times were 90 min for robotic and 95 min for laparoscopic cases (P = 0.4590). Residents' active participation time was 66% on the robotic platform and 37% for laparoscopic (P = < 0.0001). On average, hand-offs occurred 9.7 times during robotic cases and 6.3 times during laparoscopic cases (P = 0.0131). The mean number of cases per resident was 5.86 robotic and 1.67 laparoscopic (P = 0.0312). For robotic cases, there was a strong correlation between percent active resident participation and their prior robotic experience (r = 0.78) while there was a weaker correlation with prior laparoscopic experience (r = 0.47). On the other hand, prior robotic experience had minimal correlation with the percent active resident participation in laparoscopic cases (r = 0.12) and a weak correlation with prior laparoscopic experience (r = 0.37). CONCLUSION: The robotic platform may be a more effective teaching tool with a higher degree of entrustability indicated by the higher mean resident participation. We observed a greater degree of skill transference from laparoscopy to the robot, indicated by a higher degree of correlation between the resident's prior laparoscopic experience and the percent console time in robotic cases. There was minimal correlation between residents' prior robotic experience and their participation in laparoscopic cases. Our findings suggest that the learning curve for the robot may be shorter as prior robotic experience had a much stronger association with future robotic performance compared to the association observed in laparoscopy.


Assuntos
Competência Clínica , Cirurgia Geral , Hérnia Inguinal , Herniorrafia , Internato e Residência , Laparoscopia , Curva de Aprendizado , Duração da Cirurgia , Procedimentos Cirúrgicos Robóticos , Humanos , Laparoscopia/educação , Laparoscopia/métodos , Internato e Residência/métodos , Hérnia Inguinal/cirurgia , Procedimentos Cirúrgicos Robóticos/educação , Procedimentos Cirúrgicos Robóticos/métodos , Herniorrafia/educação , Herniorrafia/métodos , Masculino , Cirurgia Geral/educação , Feminino , Adulto , Pessoa de Meia-Idade
3.
Surg Endosc ; 38(6): 2939-2946, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38664294

RESUMO

BACKGROUND: The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) has long recognized and championed increasing diversity within the surgical workplace. SAGES initiated the Fundamentals of Leadership Development (FLD) Curriculum to address these needs and to provide surgeon leaders with the necessary tools and skills to promote diversity, equity, and inclusion (DEI) in surgical practice. In 2019, the American College of Surgeons issued a request for anti-racism initiatives which lead to the partnering of the two societies. The primary goal of FLD was to create the first surgeon-focused leadership curriculum dedicated to DEI. The rationale/development of this curriculum and its evaluation/feedback methods are detailed in this White Paper. METHODS: The FLD curriculum was developed by a multidisciplinary task force that included surgeons, education experts, and diversity consultants. The curriculum development followed the Analysis, Design, Development, Implementation and Evaluation (ADDIE) instructional design model and utilized a problem-based learning approach. Competencies were identified, and specific learning objectives and assessments were developed. The implementation of the curriculum was designed to be completed in short intervals (virtual and in-person). Post-course surveys used the Kirkpatrick's model to evaluate the curriculum and provide valuable feedback. RESULTS: The curriculum consisted of interactive online modules, an online discussion forum, and small group interactive sessions focused in three key areas: (1) increasing pipeline of underrepresented individuals in surgical leadership, (2) healthcare equity, and (3) conflict negotiation. By focusing on positive action items and utilizing a problem-solving approach, the curriculum aimed to provide a framework for surgical leaders to make meaningful changes in their institutions and organizations. CONCLUSION: The FLD curriculum is a novel leadership curriculum that provided surgeon leaders with the knowledge and tools to improve diversity in three areas: pipeline improvement, healthcare equity, and conflict negotiation. Future directions include using pilot course feedback to enhance curricular effectiveness and delivery.


Assuntos
Diversidade Cultural , Currículo , Liderança , Humanos , Sociedades Médicas/organização & administração , Estados Unidos , Cirurgiões/educação , Brancos
4.
Surg Endosc ; 38(5): 2315-2319, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38575829

RESUMO

INTRODUCTION: The SAGES Guidelines Committee creates evidence-based clinical practice guidelines. Due to existing health disparities, recommendations made in these guidelines may have different impacts on different populations. The updates to our standard operating procedure described herein will allow us to produce well-designed guidelines that take these disparities into account and potentially reduce health inequities. METHODS: This paper outlines updates to the SAGES Guidelines Committee Standard Operating Procedure in order to incorporate issues of heath equity into our guideline development process with the goal of minimizing downstream health disparities. RESULTS: SAGES has developed an evidence-based, standardized approach to consider issues of health equity throughout the guideline development process to allow physicians to better counsel patients and make research recommendations to better address disparities. CONCLUSION: Societies that promote guidelines within their organization must make an intentional effort to prevent the widening of health disparities as a result of their recommendations. The updates to the Guidelines Committee Standard Operating Procedure will hopefully lead to increased attention to these disparities and provide specific recommendations to reduce them.


Assuntos
Equidade em Saúde , Humanos , Equidade em Saúde/normas , Estados Unidos , Sociedades Médicas , Disparidades em Assistência à Saúde , Guias de Prática Clínica como Assunto
5.
Artigo em Inglês | MEDLINE | ID: mdl-38480496

RESUMO

INTRODUCTION: While obesity is a risk factor for post-operative complications, its impact following sepsis is unclear. The primary objective of this study was to evaluate the association between obesity and mortality following admission to the surgical ICU (SICU) with sepsis. METHODS: We conducted a single center retrospective review of SICU patients grouped into obese (n = 766, BMI ≥30 kg/m2) and non-obese (n = 574, BMI 18-29.9 kg/m2) cohorts. Applying 1:1 propensity matching for age, sex, comorbidities, SOFA, and transfer status, demographic data, comorbidities, and sepsis presentation were compared between groups. Primary outcomes included in-hospital and 90-day mortality, ICU length of stay (LOS), need for mechanical ventilation (IMV) and renal replacement therapy (RRT). P < 0.05 was considered significant. RESULTS: Obesity associates with higher median ICU LOS (8.2 vs 5.6, p < 0.001), need for IMV (76% vs 67%, p = 0.001), ventilator days (5 vs 4, p < 0.004), and RRT (23% vs 12%, p < 0.001). In-hospital (29% vs 18%, p < 0.0001) and 90-day mortality (34% vs 24%, p = 0.0006) was higher for obese compared to non-obese groups. Obesity independently predicted need for IMV (OR 1.6, 95th CI: 1.2-2.1), RRT (OR 2.2, 95th CI: 1.5-3.1), in-hospital (OR 2.1, 95th CI: 1.5-2.8) and 90-day mortality (HR: 1.4, 95TH CI: 1.1-1.8), after adjusting for SOFA, age, sex, and comorbidities. Comparative survival analyses demonstrate a paradoxical early survival benefit for obese patients followed by a rapid decline after 7 days (logrank p = 0.0009). CONCLUSIONS: Obesity is an independent risk factor for 90-day mortality for surgical patients with sepsis, but its impact appeared later in hospitalization. Understanding differences in systemic responses between these cohorts may be important for optimizing critical care management. LEVEL OF EVIDENCE: III.

6.
Surgery ; 175(6): 1547-1553, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38472081

RESUMO

BACKGROUND: Ventral hernia repair is a common elective general surgery procedure among older patients, a population at greater risk of complications. Prior research has demonstrated improved quality of life in this population despite increased risk of complications. This study sought to assess the relationship between post-ventral hernia repair quality of life and patient frailty. We hypothesized that frail patients would report smaller gains in quality of life compared to the non-frail group. METHODS: The Abdominal Core Health Quality Collaborative was used to identify a cohort of patients 65 years of age or older undergoing elective ventral hernia repair from 2018 to 2022. Patients were categorized based on their modified frailty index scores as not frail/prefrail, frail, and severely frail. Quality of life was assessed using a patient-reported 12-item scale preoperatively, 30 days, 6 months, and 1 year postoperatively. RESULTS: A total of 3,479 patients were included: 30.93% non-frail, 47.17% frail, and 21.90% severely frail. Severely frail patients had lower quality of life scores at baseline (P = .001) but reported higher quality of life at both 30 days (1.24 points higher, 95% confidence interval (-1.51, 2.52), P = .010) and 6 months (0.92 points higher, 95% confidence interval (-2.29, 4.13), P = .005). Severely frail patients had higher rates of surgical site complications (P < .001) but no difference in 30-day readmissions. CONCLUSION: Our results found that frail patients reported the greatest increase in quality of life 1 year from baseline, showing that they, when selected appropriately, can gain equal benefits and have similar surgical outcomes as their non-frail counterparts.


Assuntos
Procedimentos Cirúrgicos Eletivos , Idoso Fragilizado , Fragilidade , Hérnia Ventral , Herniorrafia , Qualidade de Vida , Humanos , Idoso , Hérnia Ventral/cirurgia , Feminino , Herniorrafia/efeitos adversos , Masculino , Procedimentos Cirúrgicos Eletivos/efeitos adversos , Estudos Retrospectivos , Fragilidade/psicologia , Fragilidade/complicações , Idoso de 80 Anos ou mais , Idoso Fragilizado/psicologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/psicologia
7.
Am J Surg ; 233: 65-71, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38383165

RESUMO

BACKGROUND: Ventral hernia repair (VHR) is one of the most common general surgery procedures among older adults but is often deferred due to a higher risk of complications. This study compares postoperative quality of life (QOL) and complications between frail and non-frail patients undergoing elective VHR. We hypothesized that frail patients would have higher complication rates and smaller gains in quality of life compared to non-frail patients. STUDY DESIGN: Patients 65 years of age and older, undergoing elective VHR between 2018 and 2022 were selected from the ACHQC (Abdominal Core Health Quality Collaborative) and grouped based on frailty scores obtained using the Modified Frailty Index (mFI-5). Logistic regression adjusting for hernia characteristics (size, recurrent, parastomal, incisional) were performed for 30-day outcomes including surgical site infections (SSI), surgical site occurrences (SSO), surgical site infections/occurrences requiring procedural intervention (SSOPI), and readmission. Multivariable analyses controlling for patient and procedure characteristics were performed comparing QOL scores (HerQLes scale, 0-100) at baseline, 30 days, 6 months and 1 year postoperatively. RESULTS: A total of 4888 patients were included, 29.17% non-frail, 47.87% frail, and 22.95% severely frail. On adjusted analysis, severely frail patients had higher odds of SSO (most commonly seroma formation) but no evidence of a difference in SSI, SSOPI, readmission or mortality. Severely frail patients had lower median QOL scores at baseline (48.3/100, IQR 26.1-71.7, p â€‹= â€‹0.001) but reported higher QOL scores at both 30-days (68.3/100, IQR 41.7-88.3, p â€‹= â€‹0.01) and 6-months (86.7/100, IQR 65.0-93.3, p â€‹= â€‹0.005). CONCLUSION: Severely frail patients reported similar increases in QOL and similar complications to their not frail counterparts. Our results demonstrate that appropriately selected older patients, even those who are severely frail, may benefit from elective VHR in the appropriate clinical circumstance.


Assuntos
Procedimentos Cirúrgicos Eletivos , Hérnia Ventral , Herniorrafia , Complicações Pós-Operatórias , Qualidade de Vida , Humanos , Hérnia Ventral/cirurgia , Idoso , Feminino , Masculino , Estudos Retrospectivos , Herniorrafia/efeitos adversos , Procedimentos Cirúrgicos Eletivos/efeitos adversos , Complicações Pós-Operatórias/epidemiologia , Idoso Fragilizado , Fragilidade/complicações , Idoso de 80 Anos ou mais , Resultado do Tratamento
8.
J Surg Educ ; 81(4): 457-464, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38388313

RESUMO

OBJECTIVE: Operative coaching (OC) may facilitate improvement of surgery residents' competencies by optimizing learning and teaching. We investigated how residents' operative skills and prospective entrustment (PE) progress throughout the chief year in our OC program, how OC is perceived by participants, and how OC may facilitate learning and teaching. DESIGN, SETTING, AND PARTICIPANTS: This is a mixed-methods study conducted within the Ohio State University Wexner Medical Center General Surgery residency. Validated performance evaluations with procedural-specific skill, general skill (GS), step-specific guidance required (SSG) (an autonomy measure), and PE measures completed by chiefs, faculty coaches, and attending surgeons from 7/2018 to 6/2022 were reviewed. We also interviewed OC participants to understand their experience. Descriptive statistical and qualitative content analysis were applied. RESULTS: 441 evaluations from 147 OC cases completed by 22 chiefs, 5 faculty coaches, and 24 attendings were included. Overall, resident GS (p = 0.036), SSG (p = 0.023), and PE (p = 0.002) significantly improved throughout the year. PE significantly correlated (all p < 0.0001) with SSG (r = 0.73), followed by procedural-specific skill (r = 0.59), then GS (r = 0.57). On average, chiefs underestimated their surgical skills while attendings overestimated autonomy they permitted to residents. Chiefs, coaches, and attendings reached consensus on chiefs' PE upon graduation. Five graduated chiefs and 5 attendings were interviewed. Chiefs described OC as effective in improving their self-regulated learning and particularly valued 3 OC elements: neutral authentic feedback, third-party real-time observation, and actionable feedback. Attendings noted OC promoted their engagement in skills assessment and teaching. CONCLUSIONS: Our findings suggest chief residents' skills, autonomy, and PE progress steadily along their OC journey. Despite differences in residents', coaches', and attendings' perceptions of skill, measures of autonomy reliably correlate with entrustment. OC promotes resident learning, faculty teaching, and assessment of resident skills, autonomy, and PE in the OR.


Assuntos
Cirurgia Geral , Internato e Residência , Tutoria , Cirurgiões , Humanos , Estudos Prospectivos , Docentes de Medicina , Competência Clínica , Cirurgia Geral/educação
10.
Ann Bot ; 2024 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-38252914

RESUMO

BACKGROUND AND AIMS: The Arctic is warming at an alarming rate, leading to earlier spring conditions and plant phenology. It is often unclear to what degree changes in reproductive fitness (flower, fruit, seed production) are a direct response to warming versus an indirect response through shifting phenology. This study aims to quantify the relative importance of these direct and indirect pathways and project the net effects of warming on plant phenology and reproductive fitness under current and future climate scenarios. METHODS: We used two long-term datasets on twelve tundra species in the Canadian Arctic as part of the International Tundra Experiment (ITEX). Phenology and reproductive fitness were recorded annually on tagged individual plants at both Daring Lake, Northwest Territories (64.87, -111.58) and Alexandra Fiord, Nunavut (78.83, -75.80). Plant species encompass a wide taxonomic diversity across a range of plant functional types with circumpolar/boreal distributions. We use Hierarchical Bayesian Structural Equation models to compare the direct and indirect effects of climate warming on phenology and reproductive fitness across species, sites and years. KEY RESULTS: We find that warming, both experimental and ambient, drives earlier flowering across species, which leads to higher numbers of flowers and fruits produced, reflecting directional phenotypic selection for earlier flowering phenology. Furthermore, this indirect effect of climate warming mediated through phenology was generally ~2-3x stronger than the direct effect of climate on reproductive fitness. Under future climate predictions, individual plants showed a ~2 to 4.5-fold increase in their reproductive fitness (flower counts) with advanced flowering phenology. CONCLUSIONS: Our results suggest that, on average, the benefits of early flowering, such as increased development time and subsequent enhanced reproductive fitness, may outweigh its risks. Overall, this work provides important insights into population-level consequences of phenological shifts in a warming Arctic over multi-decadal time scales.

12.
J Surg Res ; 295: 289-295, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38056355

RESUMO

INTRODUCTION: Abdominal wall reconstruction (AWR) utilizes advanced myofascial releases to perform complex ventral hernia repair (VHR). The relationship between the performance of AWR and disparities in insurance type is unknown. METHODS: The Abdominal Core Health Quality Collaborative was queried for adults who had undergone an elective VHR between 2013 and 2020 with a hernia size ≥10 cm. Patients with missing insurance data were excluded. Comparison groups were divided by insurance type: favorable (private, Medicare, Veteran's Administration, Tricare) or unfavorable (Medicaid and self-pay). Propensity score matching compared the cumulative incidence of AWR between the favorable and unfavorable insurance comparison groups. RESULTS: In total, 26,447 subjects met inclusion criteria. The majority (89%, n = 23,617) had favorable insurance, while (11%, n = 2830) had unfavorable insurance. After propensity score matching, 2821 patients with unfavorable insurance were matched to 7875 patients with favorable insurance. The rate of AWR with external oblique release or transversus abdominis release was significantly higher (23%, n = 655) among the unfavorable insurance group compared to those with favorable insurance (21%, n = 1651; P = 0.013). CONCLUSIONS: This study provides evidence that patients with unfavorable insurance may undergo AWR with external oblique or transversus abdominis release at a greater rate than similar patients with favorable insurance. Understanding the mechanisms contributing to this difference and evaluating the financial implications of these trends represent important directions for future research in elective VHR.


Assuntos
Parede Abdominal , Hérnia Ventral , Estados Unidos , Adulto , Humanos , Idoso , Parede Abdominal/cirurgia , Terapia de Liberação Miofascial , Medicare , Hérnia Ventral/cirurgia , Músculos Abdominais/cirurgia , Herniorrafia , Telas Cirúrgicas , Estudos Retrospectivos
13.
Surg Infect (Larchmt) ; 24(10): 879-886, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38079187

RESUMO

Background: The impact of socioeconomic status on outcomes after sepsis has been challenging to define, and no polysocial metric has been shown to predict mortality in sepsis. The primary objective of this study was to evaluate the association between the Area Deprivation Index (ADI) and mortality in patients admitted to the surgical intensive care unit (SICU) with sepsis. Patients and Methods: All patients admitted to the SICU with sepsis (Sequential Organ Failure Assessment [SOFA] score ≥2) were retrospectively reviewed. The ADI scores were obtained and classified as "high ADI" (≥85th percentile, n = 400, representative of high socioeconomic deprivation) and "control ADI" (ADI <85th percentile, n = 976). Baseline demographic and clinical characteristics were compared between groups. The primary outcome was 90-day mortality. Results: High ADI patients were younger (mean age 58.5 vs. 60.8; p = 0.01) and more likely to be non-white (23.7% vs. 10.0%; p < 0.0005) and to present with chronic obstructive pulmonary disease (26.5% vs. 19.0%; p = 0.002). High ADI patients had increased in-hospital (27.3% vs. 21.6%; p = 0.025) and 90-day mortality (35.0% vs. 28.9%; p = 0.03). High ADI patients also had increased rates of renal failure (20.3% vs. 15.3%; p = 0.02). Both cohorts had similar intensive care unit (ICU) lengths of stay and median hospital stay, Charlson comorbidity index, and rate of discharge to home. High ADI is an independent risk factor for 90-day mortality after admission for surgical sepsis (odds ratio [OR], 1.39 ± 0.24; p = 0.014). Conclusions: High ADI is an independent predictor of 90-day mortality in patients with surgical sepsis. Targeted community interventions are needed to reduce sepsis mortality for these at-risk patients.


Assuntos
Estado Terminal , Sepse , Humanos , Pessoa de Meia-Idade , Estudos Retrospectivos , Prognóstico , Escores de Disfunção Orgânica , Mortalidade Hospitalar , Unidades de Terapia Intensiva
14.
Surg Endosc ; 37(12): 9514-9522, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37704792

RESUMO

INTRODUCTION: Paraesophageal hernia repair (PEHR) is a safe and effective operation. Previous studies have described risk factors for poor peri-operative outcomes such as emergent operations or advanced patient age, and pre-operative frailty is a known risk factor in other major surgery. The goal of this retrospective cohort study was to determine if markers of frailty were predictive of poor peri-operative outcomes in elective paraesophageal hernia repair. METHODS: Patients who underwent elective PEHR between 1/2011 and 6/2022 at a single university-based institution were identified. Patient demographics, modified frailty index (mFI), and post-operative outcomes were recorded. A composite peri-operative morbidity outcome indicating the incidence of any of the following: prolonged length of stay (≥ 3 days), increased discharge level of care, and 30-day complications or readmissions was utilized for statistical analysis. Descriptive statistics and logistic regression were used to analyze the data. RESULTS: Of 547 patients who underwent elective PEHR, the mean age was 66.0 ± 12.3, and 77.1% (n = 422) were female. Median length of stay was 1 [IQR 1, 2]. ASA was 3-4 in 65.8% (n = 360) of patients. The composite outcome occurred in 32.4% (n = 177) of patients. On multivariate analysis, increasing age (OR 1.021, p = 0.02), high frailty (OR 2.02, p < 0.01), ASA 3-4 (OR 1.544, p = 0.05), and redo-PEHR (OR 1.72, p = 0.02) were each independently associated with the incidence of the composite outcome. On a regression of age for the composite outcome, a cutoff point of increased risk is identified at age 72 years old (OR 2.25, p < 0.01). CONCLUSION: High frailty and age over 72 years old each independently confer double the odds of a composite morbidity outcome that includes prolonged post-operative stay, peri-operative complications, the need for a higher level of care after elective paraesophageal hernia repair, and 30-day readmission. This provides additional information to counsel patients pre-operatively, as well as a potential opportunity for targeted pre-habilitation.


Assuntos
Fragilidade , Hérnia Hiatal , Laparoscopia , Humanos , Feminino , Idoso , Masculino , Fragilidade/complicações , Fragilidade/epidemiologia , Hérnia Hiatal/complicações , Hérnia Hiatal/cirurgia , Estudos Retrospectivos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Fatores de Risco , Herniorrafia/efeitos adversos , Laparoscopia/efeitos adversos
15.
Plants (Basel) ; 12(17)2023 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-37687287

RESUMO

Human disturbance, such as trampling, is an integral component of global change, yet we lack a comprehensive understanding of its effects on alpine ecosystems. Many alpine systems are seeing a rapid increase in recreation and in understudied regions, such as the Coast Mountains of British Columbia, yet disturbance impacts on alpine plants remain unclear. We surveyed disturbed (trail-side) and undisturbed (off-trail) transects along elevational gradients of popular hiking trails in the T'ak't'ak'múy'in tl'a In'inyáxa7n region (Garibaldi Provincial Park), Canada, focusing on dominant shrubs (Phyllodoce empetriformis, Cassiope mertensiana, Vaccinium ovalifolium) and graminoids (Carex spp). We used a hierarchical Bayesian framework to test for disturbance by elevation effects on total plant percent cover, maximum plant height and diameter (growth proxies), and buds, flowers, and fruits (reproduction proxies). We found that trampling reduces plant cover and impacts all species, but that effects vary by species and trait, and disturbance effects only vary with elevation for one species' trait. Growth traits are more sensitive to trampling than reproductive traits, which may lead to differential impacts on population persistence and species-level fitness outcomes. Our study highlights that disturbance responses are species-specific, and this knowledge can help land managers minimize disturbance impacts on sensitive vegetation types.

16.
JAMA Surg ; 158(12): 1319-1320, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-37755871
17.
Animals (Basel) ; 13(16)2023 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-37627451

RESUMO

Negative visitor behaviour is an understudied area of zoo research, even though negative actions can have serious implications for animal welfare. This research project investigated the prevalence of negative visitor behaviours at four different zoos. It included observations of visitors at seven different taxa exhibits and three different types of enclosures. A modified version of behaviour sampling was used to record visitor behaviour and the activity of the animals, while a negative binomial regression was conducted to test the significance of several predictor variables against the number of negative behaviours observed. Negative visitor behaviour was relatively common, occurring in 57% of observations. Banging was the most commonly observed negative action. Negative behaviours were influenced by zoo (p < 0.001), species (p < 0.001) and the number of visitors present (p < 0.001). The charismatic species were the most harassed animals included in the study, while children were the most likely to engage in negative behaviour. Negative visitor behaviours occurred more frequently when animals were active and in close proximity to visitors. It is imperative for zoos to understand visitors' behaviour so that they can effectively communicate with their visitors to minimise negative actions and promote better animal welfare.

18.
Heliyon ; 9(6): e16879, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37484371

RESUMO

Negative visitor behaviour in zoos such as banging, shouting and feeding animals are unwanted, but under-studied, visitor actions. It is not known how prevalent negative behaviour is, which species or enclosure type receives the most negative behaviour or how these behaviours affect zoo-housed animals. In this study, a comprehensive assessment of negative visitor behaviour, using an innovative methodology, was conducted at 25 different enclosures at Fota Wildlife Park, Ireland. Additionally, animal activity level and out of sight behaviour was observed. Descriptive statistics and general linear models were used to investigate which variables affected behaviour. Banging was the most common negative behaviour, while Humboldt penguins, lion-tailed macaques and Sumatran tigers were the most harassed species. Negative actions increased as visitor number increased and at traditional-style viewing areas. Active animal behaviour and out of sight animals were effected as negative visitor behaviours increased, but there appeared to be a tolerance threshold before a behavioural response was observed. By understanding negative behaviours, zoos can strive to reduce them and promote positive animal welfare.

20.
JAMA Surg ; 158(4): 376-377, 2023 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-36753293
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA