Precipitous Decline Research Articles

On the role of antecedent meteorological conditions on flash drought initialization in Europe

The fast depletion of soil moisture in the top soil layers characterizes flash drought events. Due to their rapid onset and intensification, flash droughts severely impact ecosystem productivity. Thus understanding their initialization mechanisms is essential for improving the skill of drought forecasting systems. Here, we examine the role of antecedent meteorological conditions that lead to flash droughts across Europe over the last 70 years (1950–2019) using ERA5 dataset. We find two major flash-drought types based on a sequence of development of antecedent hydro-meteorological conditions. The first type is characterized by a joint occurrence of two mechanisms, a decline of precipitation in conjunction with an increase of the evaporative demand, both occurring before the onset of a flash drought event. The second type, on the contrary, is characterized by high precipitation preceding the event’s start, followed by a sudden precipitation deficit combined with an increase in evaporative demand at the onset of the drought. Both drought types showed increased occurrence and higher spatial coverage over the last 70 years; the second drought type has increased at a much faster rate compared to the first one specifically, over Central Europe and the Mediterranean region. Overall our study highlights the differences between the two types of flash droughts, related to varying antecedent meteorological conditions, and their changes under recent climate warming.

Clinical Protocol for Left Ventricular Assist Device Deactivation at End of Life.

As patients live longer with left ventricular assist device (LVAD) support, many will either suffer an acute event or develop a gradual, progressive disease that results in a terminal prognosis. At the end-of-life, patients, and more often, their families, will be faced with the decision to deactivate the LVAD to allow natural death. The process of LVAD deactivation carries some distinct features that distinguish it from withdrawal of other forms of life-sustaining medical technology: multidisciplinary collaboration is paramount; prognosis after deactivation is short, typically minutes-hours; and premedication doses of symptom-focused medications are typically higher than other situations involving withdrawal of life-sustaining medical technologies given the precipitous decline in cardiac output following LVAD deactivation. In this Case Discussion, we introduce the complexity of planned in-hospital LVAD deactivation through a clinical case, share our detailed institutional checklist and order set for LVAD deactivation, and broach multidisciplinary clinical protocol development processes.

Conserving the Councillor: A Case for Widespread Local Officeholding

Guided by participatory and deliberative conceptions of democracy, local governments have embraced the need for increased citizen participation in decision‐making. Yet, at the same time, a systematic reduction in the number of councillor seats has seen a precipitous decline in opportunities to participate in the council chamber. With specific reference to the Australian case, this paper seeks to explain this incongruity, suggesting that the answer lies in the wide adoption of democratic theorists' narrow conceptualisation of the role of the councillor. Viewed solely as representatives, whether in the corporate, mirror, or delegate mode, councillors are valued only insofar as they prove instrumental to an efficient and responsive system of governance. Their participation, itself, is not intrinsically valued. Drawing on novel and extant empirical evidence to demonstrate the participatory virtues of officeholding, this paper argues that when due regard is afforded to councillors' participatory role, a normative case for widespread — and more inclusive — officeholding emerges.

Assessing the Response of Different Soil Arthropod Communities to Fire: A Case Study from Northwestern Africa

In recent decades, forest fires in the Mediterranean basin have been increasing in frequency, intensity, and the area burnt. Simultaneously, insects, a group with extraordinary biodiversity that provides vital ecosystem services such as pollination and decomposition, are undergoing a precipitous decline. Unfortunately, the impact of fire on arthropod communities has been poorly addressed despite the high diversity of taxonomic and functional arthropod groups. Responses to fire can differ considerably, depending on the life history and functional traits of the species. In the present study, we investigate the short-term impact of fire (three years after a blaze) on the abundance and species composition of soil arthropods in a burnt pine forest located in Ceuta (Spain, northwestern Africa). Soil arthropods were collected from pitfall traps in burnt and unburnt pine forest sampling points. In terms of total abundance per taxonomic order, Blattodea and Diptera were the only orders seemingly affected by the fire, whereas other arthropod groups (e.g., Araneae, Coleoptera, and Isopoda) showed no differences. In terms of species composition, Coleoptera and Formicidae (Hymenoptera) communities differed between burnt and unburnt sampling points, having more species associated with burnt areas than with unburnt ones. In burnt areas, some species from open areas built nests, fed in/on the ground, and dispersed over longer distances. Within the unburnt plots, we found more species in vegetated habitats, particularly those with shorter dispersal distances. We conclude that arthropod communities differ between burnt and unburnt sites and that the response of each taxon appears to be related to particular functional traits such as habitat preference (from open to forested landscapes) and ecological specialization (from generalist to specialist species).

Neuronostatin accts as a counterregulatory factor to protect against hypoglycemia

Neuronostatin (NST) is a 13-amino acid hormone derived from the somatostatin (SST) preprohormone that exerts metabolic and cardiovascular actions in many tissue types. In transformed alpha cell lines and isolated rat islets neuronostatin enhanced low glucose-stimulated proglucagon transcription and glucagon secretion1. Additionally, neuronostatin inhibited high glucose-stimulated insulin secretion from isolated rat islets, which was mirrored in vivo in rats subjected to an intra-arterial glucose tolerance test. Rats that received a bolus injection of neuronostatin followed by infusion glucose exhibited delayed glucose disposal and impaired insulin release, causing an increased peak blood glucose1. We, therefore hypothesized the ability of neuronostatin to act as a counterregularoty factor to protect against hypoglycemia. We found that Neuronostatin administered prior to an insulin tolerance test significantly reduced hypoglycemia compared to the saline control. In addition, we found that administration of exogenous Insulin significantly reduced Neuronostatin plasma levels. These data suggest Neuronostatin may act as a counterregulatory factor in adult, male rats to prevent hypoglycemia. However, after menopause or OVX, a precipitous decline in insulin sensitivity parallels an increase in fat mass, suggesting estrogens at physiological concentrations may maintain insulin action and glucose tolerance. We therefore investigated the neuronostatin-induced blood glucose changes in conscious, cycling females. We found blood glucose levels following neuronostatin administration decreased on diestrus, when both estrogen and progesterone levels are low, but not on proestrus or estrus. From these data we conclude that the metabolic actions of Neuronostatin are modulated by sex hormone status. Further studies are required to determine the contributions of chromosomal sex and individual sex hormones to these metabolic effects of Neuronostatin.1. Salvatori AS, Elrick MM, Samson WK, Corbett JA, Yosten GL. Neuronostatin inhibits glucose-stimulated insulin secretion via direct action on the pancreatic alpha-cell. Am J Physiol Endocrinol Metab. 2014;306:E1257–E1263. Saint Louis University Internal Funds This is the full abstract presented at the American Physiology Summit 2023 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.

Fertility Knowledge and Educational Experiences of Graduating Medical Students: A Multi-Institution Survey [ID: 1363003

INTRODUCTION: There is a paucity of data regarding medical students' knowledge and education in fertility and reproductive life planning (RLP). Our goal was to assess fertility knowledge and educational experiences of graduating medical students to determine knowledge gaps and goals for future educational interventions. METHODS: Institutional review board-waived, online cross-sectional questionnaire was disseminated to graduating medical students at five participating institutions. RESULTS: The survey was distributed to 815 graduating medical students, and 117 (14.4%) completed the survey. Twenty-three (22%) overestimated the age of most precipitous fertility decline and 50 (52%) overestimated the chance of getting pregnant for a 40-year-old couple. One-third of students (30, 32%) incorrectly believe that physicians have equivalent infertility rates to the general population. Students were less cognizant of male fertility issues, incorrectly believing there was no negative effect on male fertility by age (43, 42%), certain sexual lubricants (73, 72%), and gonorrhea or chlamydia infections (45, 44%). Seventy-five (81%) report less than 5 hours of fertility-related education in medical school. Only 30 (32%) are satisfied or very satisfied with the fertility and family-building education they received. In an open-response survey question, students expressed interest in more education on transgender and cancer patient care, fertility preservation, assisted reproductive technologies, and RLP for medical professionals. CONCLUSION: This study identified deficits in medical student knowledge regarding fertility and RLP. This poses an opportunity for medical training programs to improve the amount and content of fertility-related education, both for their students' personal RLP and their ability to provide accurate, effective counseling for their patients.

PO-05-148 VENTRICULAR DYSFUNCTION IN SARCOIDOSIS CARDIOMYOPATHY: INFLAMMATION IS NOT ALWAYS THE ONE TO BLAME

Clinical presentation A 63-year-old female was admitted after repeated syncopal events. She had a previous history of type 1 diabetes and hypertension. ECG on admission showed sinus rhythm with prolonged PR interval (320ms) and normal QRS duration. Imaging work up Coronary angiography revealed patent arteries. Echocardiography showed regional wall motion abnormalities but preserved left ventricular ejection fraction (LVEF). Cardiac magnetic resonance displayed patchy contrast retention following a non-coronary distribution. Whole-body positron emission tomography showed intense, multifocal tracer uptake in the myocardium and in the thoracic lymph nodes, in a pattern consisting with sarcoidosis. Diagnosis and Initial Treatment A clinical diagnosis of cardiac sarcoidosis (CS) was made. Following the implantation of a biventricular defibrillator, she was discharged from the hospital, and systemic immunosuppression with 30 mg prednisone daily was initiated. Follow-up Six months after diagnosis, interval PET showed reduction in the degree of myocardial inflammation, and no major change in the extent of myocardial scarring as based on myocardial perfusion (Table 1). Nevertheless, LVEF had dropped from 53% to 36%. Device interrogation revealed a high burden of PVCs. PVC-mediated cardiomyopathy was suspected, and amiodarone was initiated. Also because of uncertainty for the precipitous decline of LVEF and concern that it was multifactorial, additional immunosuppression with infliximab was instituted. After four months with amiodarone (but only one dose of infliximab), the PVC burden was reduced to 1%, biventricular pacing improved to target, and LVEF was restored to normal. These outcomes are maintained two years on. Interpretation

Population Size and Habitat Occupancy by the Endangered Mariana Crow

I present data on the Mariana Crow for an extensive but previously unavailable set of population and habitat surveys from 1992 to 1993. From these, I (1) compute a series of population estimates from that period during which Mariana Crow numbers were first entering a precipitous decline, (2) quantitatively assess the habitats occupied by individual birds and thereby provide a view of the range of habitats occupied during a time when the species was still widespread, and (3) provide the first direct wet-dry season comparisons of populations and habitat occupancy. Surveys yielded significantly different wet (943) and dry season (459) population estimates, which suggested wet season courtship activity preceding dry season nesting when birds became more secretive. Moreover, they indicated that the critical turning point in population decline was after 1995. Forest was the principal habitat type occupied during both wet and dry seasons, with savanna present less than half as often as forest, although birds occupied a range of additional habitats. The species was more versatile in habitat use than is often assumed, as rates of habitat occupancy and availability were similar. Versatility is an advantage for populations confined to small islands that periodically suffer catastrophic habitat damage due to typhoons.

Estimating the response of Himalayan old-growth mountain forests to decreased monsoon precipitation

Forests in the Himalayas are a major carbon store, but are under threat due to changes in precipitation regime. To simulate a precipitation decline, throughfall-exclusion (TFE) shelters were applied during three consecutive monsoon seasons in an oak forest (2.650 m a.s.l.) and a conifer-dominated forest (3.260 m a.s.l.) in central Bhutan. Leaf water potentials, tree mortality, stem increment, soil CO2 efflux, litterfall and fine root dynamics were assessed. TFE significantly and consistently decreased topsoil (0–30 cm) moisture and leaf water potentials of Quercus lanata and Quercus griffithii (lower elevation), and to a lesser extend those of Tsuga dumosa and Quercus semecarpifolia, (higher elevation). TFE did not impose tree mortality. Stem increment remained unaffected until the second TFE year, but showed reductions during the third year with Tsuga dumosa being most severely affected (-60%). Standing fine root biomass stocks were hardly affected by TFE. Increased root necromass and faster fine root growth in the lower elevation forest suggest that the oak trees increased C allocation below ground. Soil CO2 efflux sharply declined during all three TFE years in both forests. Above ground litter input was unaffected by TFE until the second treatment year. Overall, both forest ecosystems appeared highly resistant to the imposed soil drying, with no signs of tree mortality and stable living root biomass stocks.

INFLAMMATION, MENOPAUSE, AND WOMEN’S HEALTH: A RHEUMATOLOGICAL PERSPECTIVE

Inflammatory rheumatic disorders come with their plethora of complications including accelerated ovarian aging and the associated adversities which could be a consequence of disease itself or treatment with immunosuppressants. While aiming for treat-to-target in these patients, its effect on the ovaries takes a backseat.
 This review focusses on this underexplored avenue of effect of inflammation, inflamm-aging and the associated complications that come with early menopause, in the context of autoimmune rheumatic diseases (AIRDs). Some autoimmune diseases like lupus have a major role of estrogen in their causation and tend to be less severe when the onset is after menopause, while in other inflammatory arthritis like rheumatoid arthritis (RA), estrogen may have some anti-inflammatory potential. Inflamm-aging that is associated with the AIRDs also leads to early menopause and premature ovarian insufficiency in some patients, which adds-on to the morbidity and sometimes, mortality.
 With early ovarian aging and precipitous decline in circulating estrogen, there is accelerated reduction in the bone mass and early set-in of osteoporosis. Long-term steroids, on-going inflammation and RA itself are major risk factors. The high risk of detrimental fragility fractures in these patients with a consequential reduction in the quality of life with higher loss of disability adjusted life years (DALY) and poorer functional outcomes, contributes to long-term morbidity. While remission induction and maintenance are a major part of treatment, physicians should exercise a keen eye towards recognizing early menopause and its adversities and inculcate measures for osteo-protection and prevent adding on to the morbidity. Future prospects would include attempts at delaying ovarian aging by targeting mTOR/S6 kinase pathways and preservation of ovarian tissue.

Workplace Domination and Labor Unions

Recent decades have seen a precipitous decline in union membership, with deleterious consequences for the working class. Yet political theorists have devoted little attention to unions. In this article, I argue that unions help solve collective action problems that otherwise stymie workers’ attempts to take industrial action and compel employers to take better account of their interests. Unions thereby afford workers a form of partial protection from domination. This has three important implications. First, insofar as workers have claims against subjection to domination, they must be afforded opportunities to unionize. Second, insofar as the ability of unions to afford workers such protection depends on their being able to credibly threaten industrial action, it is essential that unions and their members have the right to take such action. Finally, workers have duties to join the union that represents them and contribute to its legitimate activities. This lends support to various forms of compulsory unionization.

The Spatio-Temporal Dynamic Patterns of Shallow Groundwater Level and Salinity: The Yellow River Delta, China

Shallow groundwater in coastal aquifers is a highly dynamic and complex system with a high risk of seawater intrusion. Analyzing the spatio-temporal dynamic patterns of groundwater can help to manage the groundwater resource and prevent it from degradation. Based on the groundwater level (GWL) and electrical conductivity (EC) monitoring data of 18 observation wells in the Yellow River Delta (YRD) from 2004 to 2010, this research analyses the groundwater dynamics using a robust seasonal trend decomposition technique (STL) and spatial interpolation method to detect the groundwater spatio-temporal dynamic patterns of groundwater level and salinity. Combined with hydro-climatic data, the Pearson correlation method and the Mann-Kendall (MK) trend analysis were used to further reveal the impacts that induce their trends and seasonal variations. Our analyses show that the risk of seawater intrusion into local shallow aquifers in this region is high, with the mean groundwater level over 42% of the region lower than the local sea level, and the mean groundwater EC over 96% of the region met the standards for seawater intrusion. In addition, the trends of groundwater level generally declined by 0.01~0.45 m/a and salinity increased by 1.153~25.608 μs/cm.a, which are consistent with the trend of precipitation decline. The seasonal dynamics of groundwater level and salinity are highly correlated with the seasonal components of rainfall and evaporation. It can be concluded that the extent of seawater intrusion will increase in the future with sea level rise. The approaches used in this study proved to be effective and can certainly serve as an example for the analysis of the spatio-temporal dynamics of groundwater in other coastal regions.

MP07-10 BEFORE AND AFTER THE BAN: NATIONAL INCIDENCES OF TRANSVAGINAL MESH PLACEMENT AND REMOVAL FOR PELVIC ORGAN PROLAPSE

You have accessJournal of UrologyCME1 Apr 2023MP07-10 BEFORE AND AFTER THE BAN: NATIONAL INCIDENCES OF TRANSVAGINAL MESH PLACEMENT AND REMOVAL FOR PELVIC ORGAN PROLAPSE Elie Kaplan-Marans, Mariela Martinez, Arshia Sandozi, Jeffrey Lee, Dhaval Jivanji, Karis Buford, and Allison Polland Elie Kaplan-MaransElie Kaplan-Marans More articles by this author , Mariela MartinezMariela Martinez More articles by this author , Arshia SandoziArshia Sandozi More articles by this author , Jeffrey LeeJeffrey Lee More articles by this author , Dhaval JivanjiDhaval Jivanji More articles by this author , Karis BufordKaris Buford More articles by this author , and Allison PollandAllison Polland More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003222.10AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: In April 2019, the Food and Drug Administration (FDA) banned manufacturers from selling and distributing mesh for transvaginal repair of pelvic organ prolapse (POP). We assessed national incidences of transvaginal mesh placement and revision or removal for POP before and after the ban. METHODS: The Medicare Physician and Other Practitioners database was queried for all transvaginal mesh placements and revisions or removals for POP between 2013 and 2020 using CPT codes 57267 and 57295, respectively. Linear regression was performed with statistical significance set to 95% confidence intervals. RESULTS: A total of 51,234 mesh placements and 15,854 mesh revisions or removals were identified. As shown in the Figure 1, there was a significant and gradual downward trend in utilization of both procedures during the study period, without precipitous changes after the ban (mesh placement, R2=0.97, p<0.001; mesh revisions or removals, R2=0.97, p<0.001). From 2013 to 2020, mesh placement decreased from 10,397 to 2,813 cases (370%) and mesh revision or removal decreased from 2,975 to 1,091 cases (270%). Despite the FDA ban, transvaginal mesh placement for POP was still performed in 2020 (2,813 cases). CONCLUSIONS: There was not a precipitous decline in the use of transvaginal mesh for prolapse after the 2019 ban. Utilization has instead gradually decreased since the original FDA notification in 2011. Physicians may now be using the remaining stock of transvaginal mesh or other types of mesh that are off-label for prolapse repair. It is important to discuss the risks and benefits of using transvaginal mesh as well as the FDA notification and ban with patients prior to prolapse surgery. Source of Funding: None © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e88 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Elie Kaplan-Marans More articles by this author Mariela Martinez More articles by this author Arshia Sandozi More articles by this author Jeffrey Lee More articles by this author Dhaval Jivanji More articles by this author Karis Buford More articles by this author Allison Polland More articles by this author Expand All Advertisement PDF downloadLoading ...

Multilevel Calibration Weighting for Survey Data

AbstractIn the November 2016 U.S. presidential election, many state-level public opinion polls, particularly in the Upper Midwest, incorrectly predicted the winning candidate. One leading explanation for this polling miss is that the precipitous decline in traditional polling response rates led to greater reliance on statistical methods to adjust for the corresponding bias—and that these methods failed to adjust for important interactions between key variables like educational attainment, race, and geographic region. Finding calibration weights that account for important interactions remains challenging with traditional survey methods: raking typically balances the margins alone, while post-stratification, which exactly balances all interactions, is only feasible for a small number of variables. In this paper, we propose multilevel calibration weighting, which enforces tight balance constraints for marginal balance and looser constraints for higher-order interactions. This incorporates some of the benefits of post-stratification while retaining the guarantees of raking. We then correct for the bias due to the relaxed constraints via a flexible outcome model; we call this approach “double regression with post-stratification.” We use these tools to re-assess a large-scale survey of voter intention in the 2016 U.S. presidential election, finding meaningful gains from the proposed methods. The approach is available in the multical R package.

The Prevention, Diagnosis, and Treatment of Rapid Oral Health Deterioration (ROHD) among Older Adults.

The world's population is aging. Older adults are at risk for multiple chronic medical problems as they age. The management of these diseases requires these people to take a variety of medications, which may have undesired side effects. These medical issues can impact oral healthcare and result in a precipitous decline in oral health. A standardized teaching model has been developed to help novice dental practitioners learn how to access and treat oral health problems in older adults. This model is called rapid oral health deterioration (ROHD) risk assessment. The model has four steps for assessment and four categories of risk. This paper describes the components of the ROHD risk assessment, and how it can be used to prevent, diagnose and treat ROHD among older adults.

Is use of opioid agonist treatment associated with broader primary healthcare use among men with recent injecting drug use histories following release from prison? A prospective cohort study

BackgroundA precipitous decline in health status among people recently released from prison is common. In Victoria, Australia, opioid agonist treatment (OAT) in the community involves frequent contact with primary care, potentially facilitating broader use of primary healthcare services. Among a cohort of men who injected drugs regularly pre-imprisonment, we estimated differences in rates of primary healthcare use and medication dispensation between people who did and did not receive OAT post-release.MethodsData came from the Prison and Transition Health Cohort Study. Three-month post-release follow-up interviews were linked with primary care and medication dispensation records. Generalised linear models were fit with one exposure (OAT: none/partial/complete) for 13 outcomes relating to primary healthcare use, pathology testing, and medication dispensation, adjusted for other covariates. Coefficients were reported as adjusted incidence rate ratios (AIRR).ResultsAnalyses included 255 participants. Compared to no OAT use, both partial and complete OAT use were associated with increased rates of standard (AIRR: 3.02, 95%CI: 1.88–4.86; AIRR: 3.66, 95%CI: 2.57–5.23), extended (AIRR: 2.56, 95%CI: 1.41–4.67; AIRR: 2.55, 95%CI: 1.60–4.07) and mental health-related (AIRR: 2.71, 95%CI: 1.42–5.20; AIRR: 2.27, 95%CI: 1.33–3.87) general practitioner (GP) consultations, total medication (AIRR: 1.88, 95%CI: 1.19–2.98; AIRR: 2.40, 95%CI: 1.71–3.37), benzodiazepine (AIRR: 4.99, 95%CI: 2.81–8.85; AIRR: 8.30, 95%CI: 5.28–13.04) and gabapentinoid (AIRR: 6.78, 95%CI: 3.34–13.77; AIRR: 4.34, 95%CI: 2.37–7.94) dispensations, respectively. Partial OAT use was also associated with increased after-hours GP consultations (AIRR: 4.61, 95%CI: 2.24–9.48) and complete OAT use? with increased pathology utilisation (e.g. haematological, chemical, microbiological or immunological tissue/sample testing; AIRR: 2.30, 95%CI: 1.52–3.48).ConclusionWe observed higher rates of primary healthcare use and medication dispensation among people who reported partial and complete OAT use post-release. Findings suggest that access to OAT post-release may have a collateral benefit in supporting broader health service utilisation, underscoring the importance of retention in OAT after release from prison.

Impact of COVID-19 on Sexually Transmitted Infection and HIV Screening at an Urban Safety-Net Hospital

HIV and other sexually transmitted infections (STIs) are on the rise nationally and internationally. The coronavirus 2019 (COVID-19) pandemic drove a shift toward telemedicine and prioritization of symptomatic treatment over asymptomatic screening. The impact in safety-net settings, which faced disproportionate baseline STI/HIV rates rooted in structural inequities, and where many patients lack telemedicine resources, is not yet known. This study describes the impact of COVID-19 on STI/HIV testing at an urban safety-net hospital. We used descriptive statistics to compare hospital-wide chlamydia, gonorrhea, syphilis, and HIV testing volume and positivity rates in the following periods: prepandemic (July 1, 2019-February 29, 2020), peak-pandemic (March 1, 2020-May 31, 2020), and postpeak (June 1, 2020-August 31, 2021). STI and HIV test volume dropped sharply in March 2020. STI testing during the peak-pandemic period was 42% of prepandemic baseline (mean 1145 vs. 2738 tests/month) and nadired in April 2020 (766 tests/month). Similarly, peak-pandemic HIV testing was 43% of prepandemic baseline (mean 711 vs. 1635 tests/month) and nadired in April 2020 with 438 tests/month, concentrated in emergency department and inpatient settings. STI and HIV testing rates did not return to baseline for a full year. STI and HIV test positivity rates were higher in the peak-pandemic period compared with the prepandemic baseline. Given the precipitous decline in STI and HIV testing during the pandemic, safety-net settings should develop low-barrier alternatives to traditional office-based testing to mitigate testing gaps, high positivity rates, and associated morbidity.

Examining the relationship between vegetation decline and precipitation in the national parks of the Greater Limpopo Transfrontier Conservation Area during the 21st century

The Greater Limpopo Transfrontier Conservation Area (GLTFCA) of southeastern Southern Africa is home to five large national parks and is an important protected area crossing different geopolitical borders, but with the same conservation goals. However, even with similar management techniques, there have been concerning declines in vegetation observed across the last few decades. This study proposes that a larger driver, climate, is linked to this decline over time, and raises the point that these conservation areas are more important now than ever. Precipitation (annual and seasonal), the Normalized Difference Vegetation Index (NDVI, indicator of vegetation health), and Directional Persistence data (D, metric to measure trends in vegetation health over time compared to a baseline value) from 2000 to 2020 are used. Overall, there was a negative trend in precipitation during the 21st century in all seasons except the beginning of the wet season. Linked to this were negative trends in vegetation health both in absolute Normalized Difference Vegetation Index values and resultant D values. Overall, this study found a decline in precipitation, which was significantly linked to a decline in vegetation health across the majority of the year in the Greater Limpopo Transfrontier Conservation Area. This study supports literature on browning in sub-Saharan Africa and gives managers even more reason to work together towards a unified conservation strategy for this important region.

Camel livestock in the Algerian Sahara under the context of climate change: Milk properties and livestock production practices

Camel livestock is an ancestral activity in Algeria; however, climate change has forced camel herders to modify their breeding practices to make them more sustainable. This study summarized livestock production practices, milk qualities, and the potential of camel livestock to preserve production ability under global warming. To collect data related to livestock farming practices, 10 camel herders were interviewed using a formal questionnaire. Then, 15 milk samples (9 samples of raw milk and 6 samples that had undergone heat treatment) were collected in the region of Oued Souf in southeastern Algeria to carry out the physicochemical and bacteriological analysis. From 1990 to 2021, results showed severe drought accompanied by a significant increase in the annual average maximum temperature with a temporal slope of 0.04 °C year−1 and a significant decline in annual precipitation with a temporal slope of −0.07 mm year−1. A socio-demographic survey revealed a low educational level for camel herders. They owned small herd of camels (6.84 ± 8.66 camels) in the transhumant and extensive system or > 150 heads in the nomadic and extensive system. The average daily milk production in the nomadic system was very low (<3 L/day); it was less important compared to that in the transhumant system (4–5 L/day), with an acceptable physicochemical quality but poor bacteriological quality. Given the susceptibility of the research area, we recorded that camel livestock and travel mobility were used as adaptation strategies to the effects of climate change. On the one hand, camel breed conservation programs can enhance biodiversity and a sustainable ecosystem. On the other side, a genetic improvement program that might boost productivity and profitability might be advantageous. Smallholders may benefit from this by receiving a fair and secure income and good working conditions, which could contribute significantly to social equity and local economies.

Ecological restoration using intertidal foundation species: Considerations and potential for rockweed restoration

AbstractFoundation species, such as trees, corals, grasses, oysters, and rockweeds, must be common and abundant to effectively modify the physical environment and increase biodiversity by buffering environmental stress. Yet many of these important species have been declining due to disease, climate change, and other factors. A prime example is the precipitous population decline of marine rockweeds, which is attributed to increased urbanization and its accompanying impacts. Rockweeds provide three‐dimensional habitat in harsh rocky intertidal environments and regulate ecosystem functioning, essential roles that no substitute species are capable of filling. Recovery of impacted rockweed populations is typically slow and unpredictable due to their limited dispersal capacity. These issues have motivated efforts to conserve remaining populations of rockweeds and reestablish or enhance depleted ones. Successfully doing so requires a robust understanding of factors that affect survival of the species and the processes that influence ecosystem structure, along with rigorous scientific testing of restoration methods and the factors that affect restoration success. In this comprehensive review, we summarize the current knowledge of rockweed ecology, highlight studies that could inform restoration practices, and recommend ways to improve our ability to implement scalable restoration of rockweeds and accompanying ecosystem‐wide benefits.