Patrícia Pósa - Academia.edu (original) (raw)
PAGES by Patrícia Pósa
ThedatabaseofseedremainscontainstheresultsofthearchaeobotanicalresearchinHungarythatreachesbackmo... more ThedatabaseofseedremainscontainstheresultsofthearchaeobotanicalresearchinHungarythatreachesbackmorethan140years.Overthisperiod50researchersprocessedca.500archaeologicalsites.Thedatabaseshowsapproximately10millionseedsof800planttaxa(mostlyspecies)identifiedfromtheNeolithictotheModernAge.
ThedatabaseoftheseedremainsfromHungarianexcavations,indicatingspeciesandnumberofitemswasclassifiedonthebasisofperiodsandsites,rangingfromtheNeolithictotheModernAge,whichmakesitpossibletoreconstructtheconditionsof27(100-700yearlong)periodsin93000km2.TheseedremainsalsoshedlightonweedhistoryandtheenvironmentalchangestakingplaceinHungaryinthelasteightthousandyears.
Papers by Patrícia Pósa
We present PADAPT 1.0, the Pannonian Database of Plant Traits which relies on regional data sourc... more We present PADAPT 1.0, the Pannonian Database of Plant Traits which relies on regional data sources and integrates existing data and new measurements on a wide range of traits and attributes of the plant species of the Pannonian Biogeographical Region and makes it freely accessible atwww.padapt.eu. The current version covers the species of the region occurring in Hungary (cc. 90% of the region’s flora) and consists of 126,337 records on 2745 taxa. There are 53 plant attributes in PADAPT 1.0 organised in six major groups: (i) Habitus and strategy, (ii) Reproduction, (iii) Kariology, (iv) Distribution and conservation, (v) Ecological indicator values, and (vi) Leaf traits. By including species of the eastern part of Europe not covered by other databases, PADAPT can facilitate studying the flora and vegetation of the eastern part of the continent. Data collection will continue in the future and the PADAPT team welcomes researchers interested in contributing with data. The main task bef...
Applied Ecology and Environmental Research, 2017
Traditional farming has been ceased in large areas regarding several Central-European countries d... more Traditional farming has been ceased in large areas regarding several Central-European countries during the last decades. Nevertheless, only minimal knowledge is available about the impacts of these land use changes on the fluxes of grasslands. Within the framework of this research the dependence of stand level CO 2 flux (NEE) on temperature, light (PPFD), leaf area (LAI), evapotranspiration and soil moisture has been examined in a dry sandy pasture grazed by grey cattle for decades. The examinations have been completed both in a grazed area and in a 6 hectare patch excluded from grazing. Measurements have been taken for 3 years during the vegetation periods in the area of the Kiskunság National Park by a mobile Plexiglas chamber as well as infrared gas analysers. Among the examined abiotic and biotic parameters the dependence of NEE on PPFD and LAI has been significant in both areas. Exponential and linear correlation turned out to be the strongest in both grassland types between CO 2 fixation and light dependence and CO 2 fixation and leaf area, respectively. The strongest correlation has been observed between the PPFD and NEE in both types of grassland. The dependence of CO 2 flux on light and leaf area has been stronger in the extensively grazed area compared to the other examined grass excluded from grazing. Based on this fact it can be assumed that the conversion of land use in traditionally grazed grasslands has negative influence on the relation among NEE and the key abiotic and biotic parameters. It can be explained, beside the accumulation of litter, by the altered vegetation dynamic processes. Extreme dry periods effect, in a negative way, the dependence of CO 2 flux on temperature, soil moisture and evapotranspiration. It calls the attention to the impacts of weather extremities on the mechanisms in seminatural sandy grasslands.
Quaternary Science Reviews, 2017
This investigation focuses on the transformation of the settlement pattern of a lowland landscape... more This investigation focuses on the transformation of the settlement pattern of a lowland landscape as a social response to the hydrological challenges emerging in the late 13th century (c.) overture of the Little Ice Age (LIA). Results of the applied zonal analysis suggested a strong spatial connection between the geomorphological conditions, the agro-ecological suitability (good-excellent, medium and low) and the stability or instability of settlement patterns. The elevation means of archaeological sites in the deserted zones proved significantly lower than those in zones with permanent settlement pattern (Brunner-Munzel test p 0.01; n ¼ 377). Additionally, the late medieval (14th-mid-16th centuries) site group was situated, on average, significantly higher than the high medieval (late 10th-13th centuries) site group within the permanent zones (Brunner-Munzel test p 0.01; n ¼ 219). These outcomes statistically confirm that not only did low-lying inhabited areas shrink significantly, but they also displaced vertically in the first phase of the LIA. When analysing the relation of settlement pattern to soil conditions, the proportion of areas with good-excellent agro-ecological suitability proved 1.5e2 times higher in the permanent zones than in the deserted and uninhabited settlement suitability zones. Using the linear model, different regression coefficients appeared between the extension of the high and medium agroecological suitability zones and the number of high and late medieval settlements. The different coefficients in the studied two periods suggest that the issue of agroecological suitability in the High Middle Ages did not bear such importance as in the late Middle Ages. The findings of the paper may contribute to answering the question why the relatively dense settlement pattern of the deserted zones was abandoned almost completely by the end of the 13th c. in areas where flood proneness and weak agro-ecological suitability both meant a serious risk for human communities. Finally, we presumed that if hydro-climatic changes increased water levels, they must have changed the plant composition of the studied landscape as well. Chi-squared test of macrofossil plant remains (narchaeological site ¼ 55; ntaxon ¼ 330) shows that the second part of the 13th c. saw the ratio of species from humid habitat types grow (Х 2 ¼ 7.81; df ¼ 1; p ¼ 0.02). Comparison of the two studied processes indicates a broad synchronism between the shrinkage of inhabited areas and the increasing proportion of plants with humid environment tolerance during the second part of the 13th c. The reconstructed transformations in the composition of plant remains and settlement structure signal not a mere transitional change, but a 'longue dur ee' structural transformation of the landscape.
Cultivation has a history of eight thousand years, olericulture five thousand years, while pomicu... more Cultivation has a history of eight thousand years, olericulture five thousand years, while pomiculture two thousand years in Hungary (Central Europe). The majority of cereals arrived in the country with the Neolithic harvesting population. Most leguminous plants were brought in by the peoples of the tell cultures in the middle Bronze Age, while fruit species and grapes appeared at the time of the Roman conquest. An oriental plant know-how came with the conquering Hungarians and occidental plant species and their cultivation know-how were added to that basis after the assumption of Christianity (some AD 1000). Archaeobotany (also known as palaeo-ethnobotany) is the science of the identification of plant remains and plant products. Its main scope covers the history of plant cultivation and vegetation. It studies the relationship between society and the flora. In addition to the identification of the remains of cultivated plants it monitors the transformation of wild species into culti...
Quaternary Science Reviews, Feb 1, 2017
This investigation focuses on the transformation of the settlement pattern of a lowland landscape... more This investigation focuses on the transformation of the settlement pattern of a lowland landscape as a social response to the hydrological challenges emerging in the late 13th century (c.) overture of the Little Ice Age (LIA). Results of the applied zonal analysis suggested a strong spatial connection between the geomorphological conditions, the agro-ecological suitability (good-excellent, medium and low) and the stability or instability of settlement patterns. The elevation means of archaeological sites in the deserted zones proved significantly lower than those in zones with permanent settlement pattern (Brunner-Munzel test p ≤ 0.01; n = 377). Additionally, the late medieval (14th-mid-16th centuries) site group was situated, on average, significantly higher than the high medieval (late 10th-13th centuries) site group within the permanent zones (Brunner-Munzel test p ≤ 0.01; n = 219). These outcomes statistically confirm that not only did low-lying inhabited areas shrink significan...
The American Journal of Gastroenterology, 2001
To develop a clinical care pathway for the management of patients with acute upper or lower nonva... more To develop a clinical care pathway for the management of patients with acute upper or lower nonvariceal GI hemorrhage (GIH) who do not require immediate surgical intervention. To test the effectiveness and safety of the pathway in improving the efficiency of care for patients with acute GIH. A multidisciplinary team developed the evidence-based GIH clinical care pathway by consensus techniques. In a quasiexperimental design, pathway outcomes were measured prospectively during the first 8 months of pathway implementation, and compared to similar time periods in the 2 prior yr. Effectiveness measures were the number of patients <65 yr of age admitted for GIH and the hospital length of stay for all patients. Thirty-day safety outcomes were the rates of recurrent GIH, mortality, and readmission to hospital for any reason. Of 368 patients studied after pathway implementation, 81 (22%) were managed as outpatients. The number of admissions for pathway patients <65 yr of age was significantly lower compared to 691 prepathway patients (p < 0.002). Mean length of stay (+/- 95% CI) for pathway inpatients was 3.5 (3.1, 3.9) days, compared to 5.3 (4.9, 5.7) and 4.6 (4.2, 5) days in the 2 prepathway yr, respectively (p < 0.001). Multivariable regression controlling for admission vital signs, comorbid conditions, age, and the etiology of GIH confirmed that admission after pathway implementation was an independent predictor of a reduced length of hospital stay. There were no significant between-year differences in the 30-day rates of recurrent GIH, mortality, or hospital readmission. A multidisciplinary clinical care pathway may improve the efficiency of caring for patients with acute upper or lower nonvariceal GIH. Decreasing the number of admissions for GIH and reducing the hospital length of stay can be achieved without increasing the number of adverse outcomes.
The American Journal of Surgery, 2011
BACKGROUND: Our institution initiated the implementation of the Surviving Sepsis Campaign guideli... more BACKGROUND: Our institution initiated the implementation of the Surviving Sepsis Campaign guidelines in 2006. We hypothesize that the addition of a surgical intensivist improved results more than the implementation of the guidelines alone.
The Journal of Emergency Medicine, 2009
BMJ, 2010
Objectives To evaluate the extent to which intensive care units participating in the initial Keys... more Objectives To evaluate the extent to which intensive care units participating in the initial Keystone ICU project sustained reductions in rates of catheter related bloodstream infections. Design Collaborative cohort study to implement and evaluate interventions to improve patients' safety. Setting Intensive care units predominantly in Michigan, USA. Intervention Conceptual model aimed at improving clinicians' use of five evidence based recommendations to reduce rates of catheter related bloodstream infections rates, with measurement and feedback of infection rates. During the sustainability period, intensive care unit teams were instructed to integrate this intervention into staff orientation, collect monthly data from hospital infection control staff, and report infection rates to appropriate stakeholders. Main outcome measures Quarterly rate of catheter related bloodstream infections per 1000 catheter days during the sustainability period (19-36 months after implementation of the intervention). Results Ninety (87%) of the original 103 intensive care units participated, reporting 1532 intensive care unit months of data and 300 310 catheter days during the sustainability period. The mean and median rates of catheter related bloodstream infection decreased from 7.7 and 2.7 (interquartile range 0.6-4.8) at baseline to 1.3 and 0 (0-2.4) at 16-18 months and to 1.1 and 0 (0.0-1.2) at 34-36 months post-implementation. Multilevel regression analysis showed that incidence rate ratios decreased from 0.68 (95% confidence interval 0.53 to 0.88) at 0-3 months to 0.38 (0.26 to 0.56) at 16-18 months and 0.34 (0.24-0.48) at 34-36 months post-implementation. During the sustainability period, the mean bloodstream infection rate did not significantly change from the initial 18 month post-implementation period (−1%, 95% confidence interval −9% to 7%).
AACN Clinical Issues: Advanced Practice in Acute and Critical Care, 1994
American Journal of Medical Quality, 2011
ThedatabaseofseedremainscontainstheresultsofthearchaeobotanicalresearchinHungarythatreachesbackmo... more ThedatabaseofseedremainscontainstheresultsofthearchaeobotanicalresearchinHungarythatreachesbackmorethan140years.Overthisperiod50researchersprocessedca.500archaeologicalsites.Thedatabaseshowsapproximately10millionseedsof800planttaxa(mostlyspecies)identifiedfromtheNeolithictotheModernAge.
ThedatabaseoftheseedremainsfromHungarianexcavations,indicatingspeciesandnumberofitemswasclassifiedonthebasisofperiodsandsites,rangingfromtheNeolithictotheModernAge,whichmakesitpossibletoreconstructtheconditionsof27(100-700yearlong)periodsin93000km2.TheseedremainsalsoshedlightonweedhistoryandtheenvironmentalchangestakingplaceinHungaryinthelasteightthousandyears.
We present PADAPT 1.0, the Pannonian Database of Plant Traits which relies on regional data sourc... more We present PADAPT 1.0, the Pannonian Database of Plant Traits which relies on regional data sources and integrates existing data and new measurements on a wide range of traits and attributes of the plant species of the Pannonian Biogeographical Region and makes it freely accessible atwww.padapt.eu. The current version covers the species of the region occurring in Hungary (cc. 90% of the region’s flora) and consists of 126,337 records on 2745 taxa. There are 53 plant attributes in PADAPT 1.0 organised in six major groups: (i) Habitus and strategy, (ii) Reproduction, (iii) Kariology, (iv) Distribution and conservation, (v) Ecological indicator values, and (vi) Leaf traits. By including species of the eastern part of Europe not covered by other databases, PADAPT can facilitate studying the flora and vegetation of the eastern part of the continent. Data collection will continue in the future and the PADAPT team welcomes researchers interested in contributing with data. The main task bef...
Applied Ecology and Environmental Research, 2017
Traditional farming has been ceased in large areas regarding several Central-European countries d... more Traditional farming has been ceased in large areas regarding several Central-European countries during the last decades. Nevertheless, only minimal knowledge is available about the impacts of these land use changes on the fluxes of grasslands. Within the framework of this research the dependence of stand level CO 2 flux (NEE) on temperature, light (PPFD), leaf area (LAI), evapotranspiration and soil moisture has been examined in a dry sandy pasture grazed by grey cattle for decades. The examinations have been completed both in a grazed area and in a 6 hectare patch excluded from grazing. Measurements have been taken for 3 years during the vegetation periods in the area of the Kiskunság National Park by a mobile Plexiglas chamber as well as infrared gas analysers. Among the examined abiotic and biotic parameters the dependence of NEE on PPFD and LAI has been significant in both areas. Exponential and linear correlation turned out to be the strongest in both grassland types between CO 2 fixation and light dependence and CO 2 fixation and leaf area, respectively. The strongest correlation has been observed between the PPFD and NEE in both types of grassland. The dependence of CO 2 flux on light and leaf area has been stronger in the extensively grazed area compared to the other examined grass excluded from grazing. Based on this fact it can be assumed that the conversion of land use in traditionally grazed grasslands has negative influence on the relation among NEE and the key abiotic and biotic parameters. It can be explained, beside the accumulation of litter, by the altered vegetation dynamic processes. Extreme dry periods effect, in a negative way, the dependence of CO 2 flux on temperature, soil moisture and evapotranspiration. It calls the attention to the impacts of weather extremities on the mechanisms in seminatural sandy grasslands.
Quaternary Science Reviews, 2017
This investigation focuses on the transformation of the settlement pattern of a lowland landscape... more This investigation focuses on the transformation of the settlement pattern of a lowland landscape as a social response to the hydrological challenges emerging in the late 13th century (c.) overture of the Little Ice Age (LIA). Results of the applied zonal analysis suggested a strong spatial connection between the geomorphological conditions, the agro-ecological suitability (good-excellent, medium and low) and the stability or instability of settlement patterns. The elevation means of archaeological sites in the deserted zones proved significantly lower than those in zones with permanent settlement pattern (Brunner-Munzel test p 0.01; n ¼ 377). Additionally, the late medieval (14th-mid-16th centuries) site group was situated, on average, significantly higher than the high medieval (late 10th-13th centuries) site group within the permanent zones (Brunner-Munzel test p 0.01; n ¼ 219). These outcomes statistically confirm that not only did low-lying inhabited areas shrink significantly, but they also displaced vertically in the first phase of the LIA. When analysing the relation of settlement pattern to soil conditions, the proportion of areas with good-excellent agro-ecological suitability proved 1.5e2 times higher in the permanent zones than in the deserted and uninhabited settlement suitability zones. Using the linear model, different regression coefficients appeared between the extension of the high and medium agroecological suitability zones and the number of high and late medieval settlements. The different coefficients in the studied two periods suggest that the issue of agroecological suitability in the High Middle Ages did not bear such importance as in the late Middle Ages. The findings of the paper may contribute to answering the question why the relatively dense settlement pattern of the deserted zones was abandoned almost completely by the end of the 13th c. in areas where flood proneness and weak agro-ecological suitability both meant a serious risk for human communities. Finally, we presumed that if hydro-climatic changes increased water levels, they must have changed the plant composition of the studied landscape as well. Chi-squared test of macrofossil plant remains (narchaeological site ¼ 55; ntaxon ¼ 330) shows that the second part of the 13th c. saw the ratio of species from humid habitat types grow (Х 2 ¼ 7.81; df ¼ 1; p ¼ 0.02). Comparison of the two studied processes indicates a broad synchronism between the shrinkage of inhabited areas and the increasing proportion of plants with humid environment tolerance during the second part of the 13th c. The reconstructed transformations in the composition of plant remains and settlement structure signal not a mere transitional change, but a 'longue dur ee' structural transformation of the landscape.
Cultivation has a history of eight thousand years, olericulture five thousand years, while pomicu... more Cultivation has a history of eight thousand years, olericulture five thousand years, while pomiculture two thousand years in Hungary (Central Europe). The majority of cereals arrived in the country with the Neolithic harvesting population. Most leguminous plants were brought in by the peoples of the tell cultures in the middle Bronze Age, while fruit species and grapes appeared at the time of the Roman conquest. An oriental plant know-how came with the conquering Hungarians and occidental plant species and their cultivation know-how were added to that basis after the assumption of Christianity (some AD 1000). Archaeobotany (also known as palaeo-ethnobotany) is the science of the identification of plant remains and plant products. Its main scope covers the history of plant cultivation and vegetation. It studies the relationship between society and the flora. In addition to the identification of the remains of cultivated plants it monitors the transformation of wild species into culti...
Quaternary Science Reviews, Feb 1, 2017
This investigation focuses on the transformation of the settlement pattern of a lowland landscape... more This investigation focuses on the transformation of the settlement pattern of a lowland landscape as a social response to the hydrological challenges emerging in the late 13th century (c.) overture of the Little Ice Age (LIA). Results of the applied zonal analysis suggested a strong spatial connection between the geomorphological conditions, the agro-ecological suitability (good-excellent, medium and low) and the stability or instability of settlement patterns. The elevation means of archaeological sites in the deserted zones proved significantly lower than those in zones with permanent settlement pattern (Brunner-Munzel test p ≤ 0.01; n = 377). Additionally, the late medieval (14th-mid-16th centuries) site group was situated, on average, significantly higher than the high medieval (late 10th-13th centuries) site group within the permanent zones (Brunner-Munzel test p ≤ 0.01; n = 219). These outcomes statistically confirm that not only did low-lying inhabited areas shrink significan...
The American Journal of Gastroenterology, 2001
To develop a clinical care pathway for the management of patients with acute upper or lower nonva... more To develop a clinical care pathway for the management of patients with acute upper or lower nonvariceal GI hemorrhage (GIH) who do not require immediate surgical intervention. To test the effectiveness and safety of the pathway in improving the efficiency of care for patients with acute GIH. A multidisciplinary team developed the evidence-based GIH clinical care pathway by consensus techniques. In a quasiexperimental design, pathway outcomes were measured prospectively during the first 8 months of pathway implementation, and compared to similar time periods in the 2 prior yr. Effectiveness measures were the number of patients <65 yr of age admitted for GIH and the hospital length of stay for all patients. Thirty-day safety outcomes were the rates of recurrent GIH, mortality, and readmission to hospital for any reason. Of 368 patients studied after pathway implementation, 81 (22%) were managed as outpatients. The number of admissions for pathway patients <65 yr of age was significantly lower compared to 691 prepathway patients (p < 0.002). Mean length of stay (+/- 95% CI) for pathway inpatients was 3.5 (3.1, 3.9) days, compared to 5.3 (4.9, 5.7) and 4.6 (4.2, 5) days in the 2 prepathway yr, respectively (p < 0.001). Multivariable regression controlling for admission vital signs, comorbid conditions, age, and the etiology of GIH confirmed that admission after pathway implementation was an independent predictor of a reduced length of hospital stay. There were no significant between-year differences in the 30-day rates of recurrent GIH, mortality, or hospital readmission. A multidisciplinary clinical care pathway may improve the efficiency of caring for patients with acute upper or lower nonvariceal GIH. Decreasing the number of admissions for GIH and reducing the hospital length of stay can be achieved without increasing the number of adverse outcomes.
The American Journal of Surgery, 2011
BACKGROUND: Our institution initiated the implementation of the Surviving Sepsis Campaign guideli... more BACKGROUND: Our institution initiated the implementation of the Surviving Sepsis Campaign guidelines in 2006. We hypothesize that the addition of a surgical intensivist improved results more than the implementation of the guidelines alone.
The Journal of Emergency Medicine, 2009
BMJ, 2010
Objectives To evaluate the extent to which intensive care units participating in the initial Keys... more Objectives To evaluate the extent to which intensive care units participating in the initial Keystone ICU project sustained reductions in rates of catheter related bloodstream infections. Design Collaborative cohort study to implement and evaluate interventions to improve patients' safety. Setting Intensive care units predominantly in Michigan, USA. Intervention Conceptual model aimed at improving clinicians' use of five evidence based recommendations to reduce rates of catheter related bloodstream infections rates, with measurement and feedback of infection rates. During the sustainability period, intensive care unit teams were instructed to integrate this intervention into staff orientation, collect monthly data from hospital infection control staff, and report infection rates to appropriate stakeholders. Main outcome measures Quarterly rate of catheter related bloodstream infections per 1000 catheter days during the sustainability period (19-36 months after implementation of the intervention). Results Ninety (87%) of the original 103 intensive care units participated, reporting 1532 intensive care unit months of data and 300 310 catheter days during the sustainability period. The mean and median rates of catheter related bloodstream infection decreased from 7.7 and 2.7 (interquartile range 0.6-4.8) at baseline to 1.3 and 0 (0-2.4) at 16-18 months and to 1.1 and 0 (0.0-1.2) at 34-36 months post-implementation. Multilevel regression analysis showed that incidence rate ratios decreased from 0.68 (95% confidence interval 0.53 to 0.88) at 0-3 months to 0.38 (0.26 to 0.56) at 16-18 months and 0.34 (0.24-0.48) at 34-36 months post-implementation. During the sustainability period, the mean bloodstream infection rate did not significantly change from the initial 18 month post-implementation period (−1%, 95% confidence interval −9% to 7%).
AACN Clinical Issues: Advanced Practice in Acute and Critical Care, 1994
American Journal of Medical Quality, 2011