Perceptions paysannes sur les services écosystémiques d’approvisionnement, la vulnérabilité et les stratégies de conservation de Diospyros mespiliformis Hochst en zone soudanienne du Tchad

2021 ◽  
Vol 14 (2) ◽  
pp. 35-42
Author(s):  
Nya Christelle Mbakop ◽  
Gabriel Kanmegne ◽  
Théophile Fonkou
Keyword(s):  
Methodological Approach ◽  
Well Being ◽  
Climatic Conditions ◽  
Poor Seed ◽  
In The Wild ◽  
Multipurpose Tree Species ◽  
Leaf Stripping ◽  
Almost All ◽  
Cultivation Practice ◽  
Agro Forestry

Diospyros mespiliformis Hochst. est une espèce d’arbre à usage multiple des forêts tropicales sèches qui est encore exploitée à l’état sauvage et dont les pratiques sylviculturales ne sont pas documentées. La présente étude avait pour but d’appréhender les perceptions paysannes sur l’importance socio-économique, le niveau de vulnérabilité et la pratique de la culture de cette espèce dans la zone soudanienne du Tchad. L’approche méthodologique a consisté en des enquêtes réalisées auprès de 350 personnes réparties dans 10 villages, ainsi que des observations de terrain. Les résultats ont montré que D. mespiliformis est bien connu des populations locales (100 % des enquêtés) qui en font usage dans six catégories d’usage, avec un large consensus au niveau des utilisations médicinales (Cs = 0,96), alimentaires (Cs = 0,33), dans les constructions (Cs = 0,26) et comme bois d’énergie (Cs = 0,24). Par contre le consensus est resté faible pour l’utilisation dans l’artisanat (Cs = - 0,76) et comme bois d’œuvre (Cs = - 0,83). Selon 80,2 % des répondants, les revenus tirés de l’exploitation de cette ressource contribuent significativement à l’amélioration du bien-être des ménages. En dehors de la cueillette et du ramassage des fruits, toutes les autres méthodes de récolte citées par les répondants (écorçage, prélèvement des racines, effeuillage et abatage) sont destructives, mais seulement 17,7 % des répondants en sont conscients. Une tendance régressive de la dynamique du peuplement de l’espèce est perçue par la majorité (52 %) des répondants. Selon 83,5 % des enquêtés, les habitudes en matière de culture de cette espèce sont rares voire inexistantes, à cause des difficultés de germination des graines, de la rareté des graines et des conditions climatiques défavorables à la réussite du drageonnage. Les répondants dans la quasi-totalité (99 %) se sont déclarés prêts à adopter la pratique de la culture de la plante si les contraintes de régénération sont levées. Les résultats de cette étude indiquent clairement que D. mespiliformis serait une espèce propice à la domestication participative pour l’intensification du système agroforestier dans la zone soudanienne du Tchad.   Diospyros mespiliformis Hochst. is a multipurpose tree species from tropical dry forests that is still exploited in the wild and whose silvicultural practices are not documented. The aim of this study was to understand the peasants’ perceptions on the socio-economic importance, the level of vulnerability and the cultivation practice of this species in the Sudanese zone of Chad. The methodological approach consisted of surveys carried out among 350 people in 10 villages, as well as field observations. The results showed that D. mespiliformis is well known to local populations (100% of respondents) who use it in six categories of use, with a broad consensus for use in medicine (Cs = 0.96), food (Cs = 0.33), constructions (Cs = 0.26) and as fuelwood (Cs = 0.24). On the other hand, the consensus remained weak for use in crafts (Cs = - 0.76) and as lumber (Cs = - 0.83). According to 80.2 % of respondents, income from the exploitation of this resource significantly contributes to improving household well-being. Apart from picking and collecting fruit, all other harvesting methods cited by respondents (debarking, root picking, leaf stripping and felling) are destructive, but only 17.7 % of respondents are aware of this. A regressive trend in the population dynamics of the species is perceived by the majority (52 %) of respondents. According to 83.5 % of respondents, the cultivation habits of this species are rare or even non-existent, because of poor seed germination, the scarcity of seeds and climatic conditions unfavorable to the success of suckering. Almost all respondents (99 %) declared themselves ready to adopt the practice of growing the plant if the regeneration constraints are lifted. The results of this study clearly indicate that D. mespiliformis would be an interesting species for participatory domestication for the intensification of the agro-forestry system in the Sudanese zone of Chad.

scholarly journals The Eurasian lynx (Lynx lynx) in the Ukrainian Polissia: state of population and conservation issues

2021 ◽  
Vol 2021 (21) ◽  
pp. 91-108
Author(s):  
Sergiy Zhyla ◽  
Keyword(s):  
Dynamic Equilibrium ◽  
Action Plan ◽  
Well Being ◽  
Lynx Lynx ◽  
Eurasian Lynx ◽  
Census Methods ◽  
In The Wild ◽  
High Level ◽  
Almost All ◽  
Short Time

The issue of survey, monitoring, and protection of the lynx in the Ukrainian Polissia based on the results of research carried out in 2013–2021 is considered. European census methods do not include the identification of traces of territorial individuals and of those that disperse. Lynx family groups living along the border or at the border of land users should be accounted for 50 % of the established number, so that there is no double counting. The use of photo traps to identify lynx individuals in the wild and then to establish the total lynx population is less effective and more costly than traditional trace-based techniques. Even in the absence of snow, repeated surveys on trails (five visits to the territory with intervals of at least a week), it is possible to establish the presence of almost all individuals of the lynx in the selected area. The reasons for the decline in the number of species in 2015–2017 from 80–100 to 40 individuals and the prospects for effective management of the Polissia population in the future are considered. The number of lynx in 2015–2017 in the Ukrainian Polissia decreased significantly and was at a minimum level for a short time. Since 2018, there has been a gradual increase in the number, especially rapid in the period 2019–2021. The decline in the number of the species in 2015–2017 indicates the need to create a national lynx action plan in Ukraine. The presence of a strong Baltic lynx population north of the Ukrainian Polissia, specifics of territorial distribution of forests, river network, forestless territories, including the Ovruch-Slovenian ridge, create clear eco-corridors in the Ukrainian Polissia for such forest-dwelling species as the lynx. As of 2021, fluctuations in predator-prey systems (wolf, lynx vs deer, wild boar, beaver) have apparently stopped and a new dynamic equilibrium has been established between these species. The lynx has recently proved that it is able to survive even in an anthropogenically altered landscape with a relatively high level of economic activity, which allows the well-being of the population of this species to be predicted in Ukraine.

scholarly journals Reproductive traits and floral visitors of Aechmea distichantha plants growing in different habitats of a South American xerophytic forest

Rodriguésia ◽  
2018 ◽  
Vol 69 (2) ◽  
pp. 385-396 ◽  
Author(s):  
Rodrigo M. Freire ◽  
Ignacio M. Barberis ◽  
José L. Vesprini
Keyword(s):  
Reproductive Traits ◽  
Climatic Conditions ◽  
Similar Proportion ◽  
South American ◽  
The Sun ◽  
Carpenter Bee ◽  
Carpenter Bees ◽  
Vegetative Traits ◽  
Floral Visitors ◽  
Almost All

Abstract Aechmea distichantha, a widely-distributed facultative epiphytic bromeliad species, is present from rainforests to xerophytic forests. At its southernmost distribution (Humid Chaco) it grows in the understory and forest edges. This animal-pollinated bromeliad shows high phenotypic plasticity on its vegetative traits, but there is no information about plasticity on its reproductive traits. Infructescences from shade plants were heavier, had longer rachis, more spikelets, higher number of fruits/spikelet and higher number of seeds/fruit than those from sun plants, but they presented similar number of open flowers. The number of visitation events was similar in both habitats, but more flowers were visited in the sun than in the shade. Flowers were visited by seven species (six insects and one hummingbird). In the sun, the carpenter bee was the most frequent visitor and visited almost all flowers, whereas in the shade different species of visitors attained similar proportion of visits and number of visited flowers. Despite visitation events were similar in both habitats, plants growing in the shade set more seeds/fruit than plants growing in the sun. The higher proportion of visits accomplished by carpenter bees compared to hummingbirds is probably a consequence of the climatic conditions in the austral location of these populations.

scholarly journals For which population groups will strong identification and thus eHealth services use not be possible?

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
T Vehko ◽  
E Lilja ◽  
S Parikka ◽  
A-M Aalto ◽  
H M Kuusio
Keyword(s):  
Health Care Services ◽  
Service Use ◽  
Response Rate ◽  
Well Being ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Population Groups ◽  
Digital Services ◽  
Operating Environments ◽  
Almost All

Abstract Background Digital services are expected to improve the availability of public social and health care services in many European countries as well as in Finland. eHealth and eWelfare services often require strong electronic identification which may form barriers in the availability of care. This study focuses on recognising population groups who are vulnerable to exclusion either by not having access to web or by lacking a strong electronic identification. Methods The data were gathered from the cross-sectional survey on well-being among people aged 20-64 with foreign background (PFB) (FinMonik), conducted in Finland 2018-19 (N = 12 877; response rate 53%). The data from the National survey of health, well-being and service use (FinSote 2017-18) were used as reference data for the overall population, (N = 26 422, response rate 45%). Surveys asked respondents “Do you have at your disposal internet access at home, your workplace, library or some other place?” and 'Do you have at your disposal online banking codes or a mobile certificate for electronic identification online?”. PFB were defined by background country into seven country-groups. The age-standardized proportions with confidence intervals were examined by socio-demographic background variables. Results Almost all (98%) of the overall population reported access to internet, but the proportion was lower (92%) among PFB (p < 0.001). Proportion of having a strong electronic identification was higher among general population (98%) than among PFB (88%) (p < 0.001). In both populations, younger age increased the likelihood of having a strong electronic identification. PFB students reported lower level of strong electronic identification compared to the employed. Conclusions Although most had access to internet and a strong identification, there were statistically significant differences between country-groups and by employment status. Key messages Designing and developing of eHealth and eWelfare services must ensure that everyone has the opportunity to have a strong electronic identification. Development of digital services requires user guidance, which takes into account the varying needs and operating environments.

The use of natural conditions of the high alpine province of Dagestan for reproduction of prospective varieties and hybrids of potato

2021 ◽  
pp. 34-37
Author(s):  
В.К. Сердеров ◽  
Д.В. Сердерова
Keyword(s):  
Field Experiments ◽  
Climatic Conditions ◽  
High Yield ◽  
Potato Varieties ◽  
Caspian Lowland ◽  
The Republic ◽  
High Yielding Varieties ◽  
Almost All ◽  
The Cost ◽  
Mountain Province

Большое значение в увеличении продуктивности картофеля имеет внедрение в производство перспективных высокоурожайных сортов и гибридов, приспособленных к местным природно-климатическим условиям возделывания, от чего зависят эффективность отрасли и себестоимость продукции. Цель работы – изучить влияние климатических условий на продуктивность и качественные показатели сортов и гибридов картофеля, а также использование ими благоприятных почвенно-климатических условий высокогорья Республики Дагестан, для размножения и внедрения в производство новых перспективных, высокоурожайных, приспособленных к условиям среды выращивания сортов картофеля с комплексом хозяйственно-ценных признаков. Объектом изучения послужили сорта картофеля раннего, среднераннего и среднего сроков созревания российской, белорусской и иностранной селекции. Полевые опыты закладывали в 2014–2017 годах на высоте 2000–2200 м, на землях горного опорного пункта «Курахский» Курахского района и на равнинной провинции (Прикаспийской низменности) на территории дачного массива «Наука» Махачкалинского района Республики Дагестан. Схема посадки – 70×30 см, повторность – четырехкратная. Технология выращивания картофеля – гребневая. При проведении полевых опытов использовали общепринятые методики. Практически все сорта картофеля, выращенные на равнинной провинции, сформировали высокий урожай в первый год и при дальнейшем размножении в результате развития вирусных болезней резко снизили свои продуктивные качества. Наиболее высокая урожайность в среднем за три года отмечена у сортов Жуковский ранний (20,8 т/га), Импала (20,5 т/га), Невский (17,8 т/га), Предгорный (16,9 т/га) и Удача (16,3 т/га). В свою очередь, горная провинция Дагестана характеризовалась благоприятными почвенно-климатическими условиями для возделывания как продовольственного картофеля, так и для организации первичного семеноводства на безвирусной основе и размножения перспективных сортов этой культуры. В среднем за годы исследований в горной провинции по урожайности выделились сорта Сильвана (37,4 т/га), Удача (37,6 т/га), Рокко (33,3 т/га), Импала (31,7 т/га), Жуковский ранний (29,0 т/га), Предгорный (27,7 т/га) и Примобелла (27,7 т/га), а также гибриды № 12.40/17 (43,1 т/га) и № 13.61/61 (38,8 т/га). The introduction of promising high-yielding varieties and hybrids adapted to the local natural and climatic conditions of cultivation is of great importance in increasing the productivity of potatoes, which determines the efficiency of the industry and the cost of production. The aim of the work is to study the influence of climatic conditions on the productivity and quality indicators of potato varieties and hybrids, as well as their use of favorable soil and climatic conditions in the highlands of the Republic of Dagestan, for breeding and introducing into production new promising, high-yielding, adapted to the growing environment of potato varieties with a complex of economically valuable characteristics. The object of the study was potato varieties of early, mid-early and medium maturation periods of Russian, Belarusian and foreign selection. Field experiments were conducted in 2014–2017 at an altitude of 2000–2200 m, on the lands of the mountain stronghold Kurakhsky of the Kukhar district and on the plain province (the Caspian lowland) on the territory of the suburban area Nauka of the Makhachkala district of the Republic of Dagestan. The landing scheme is 70×30 cm, the repeatability is four times. The technology of growing potatoes is combed. When conducting field experiments, generally accepted methods were used. Almost all potato varieties grown in the lowland province formed a high yield in the first year and, with further propagation, as a result of the development of viral diseases, sharply reduced their productive qualities. The highest yield on average for three years was observed in the varieties Zhukovskiy ranniy (20.8 t/ha), Impala (20.5 t/ha), Nevsky (17.8 t/ha), Predgornyy (16.9 t/ha) and Udacha (16.3 t/ha). In turn, the mountain province of Dagestan was characterized by favorable soil and climatic conditions for the cultivation of both food potatoes, and for the organization of primary seed production on a virus-free basis and the reproduction of promising varieties of this crop. On average, over the years of research in the mountain province, the varieties Silvana (37.4 t/ha), Udacha (37.6 t/ha), Rocco (33.3 t/ha), Impala (31.7 t/ha), Zhukovskiy ranniy (29.0 t/ha), Predgornyy (27.7 t/ha) and Primobella (27.7 t/ha), as well as hybrids No.12.40/17 (43.1 t/ha) and No.13.61/61 (38.8 t/ha) were distinguished by yield.

Analiza modului de utilizare a terenurilor în Regiunea de Dezvoltare Nord a Republicii Moldova

2020 ◽  
Author(s):  
Iurie Bejan ◽  
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Arable Land ◽  
Current Mode ◽  
Climatic Conditions ◽  
Development Region ◽  
Agro Forestry

The land use has undergone some changes in the last 30 years, by reducing the areas with arable land, converting multi-annual plantations into other categories of land, etc. According to the current mode of land use, the Northern Development Region has a pronounced agricultural profile - 80.3% of the total area represents agricultural land. The spatial differentiations regarding the morphological and agro-climatic conditions allowed the identification within the region of areas with agro-forestry and agro-pastoral specializations.

Doctoral capital and well-being amongst Australian PhD students: exploring capital and habitus of doctoral students

2021 ◽  
Vol 121 (3) ◽  
pp. 322-336
Author(s):  
Wayne Usher ◽  
Brittany A. McCormack
Keyword(s):  
Doctoral Students ◽  
Social Reproduction ◽  
Methodological Approach ◽  
Well Being ◽  
Cross Sectional ◽  
Content Type ◽  
Social Reproduction Theory ◽  
Self Confidence ◽  
The Right ◽  
Australian Universities

PurposeThe Higher Degree Research (HDR) journey is known for its difficulties, complexities and challenges (Lees-Deutsch, 2020), with many students experiencing multi-faceted issues and concerns (Skopek et al., 2020). Therefore, the purpose of this research is to investigate the relationships that exist between variables, vulnerability factors and doctorial capital of candidates (n = 532) studying at Australian universities (2019).Design/methodology/approachA quantitative cross-sectional correlational research design and Bronfenbrenner's socio – ecological framework (personal, home, university, community) was utilised to collect participants' (n = 532) descriptive statistics. Bourdieu's social reproduction theory was used as a lens to examine how experiences, across the PhD candidature, are influenced by several psychosocial factors and doctoral capital.FindingsFrom such a dual methodological approach, the findings from this study suggests that (1) age, (2) gender, (3) nationality, (4) financial/work status, (5) years of PhD and (6) attending postgraduate (PG) student events, go to significantly (p < 0.001) impact (positively and negatively) on students' experiences and correspondingly, impacts on their self-confidence, motivation and mental health and well-being status.Research limitations/implicationsResearch limitations are related to the recruitment of more doctoral students across more Australian universities. Further research is required from HDR supervisors, so as to “balance” the experiences of the PhD journey in higher education.Practical implicationsIn order to succeed in academia and HDR programs, students need to identify with and develop the “right kind of capital” to successfully navigate fields of social and scholarly play. Investigating how the participants perceive their social and scholarly habitus is seen as crucial in helping students to develop positive dispositions relevant to being a doctoral student.Social implicationsThe concept of doctoral capital and well-being, amongst Australian PhD students, is under researched and requires further investigation as a precursor to developing more specific policy designs aimed at providing heightened positive learning environments/HDR programs tailored to support doctoral students.Originality/valueWhilst reforms to improve PhD experiences are well established across the international literature (Geven et al., 2018; Skopek et al., 2020), evidence for Australia is largely missing. It is envisaged, that findings from this research will further assist in the development of quality policies that would go to provide effective services and support for doctoral students within Australian universities.

DECISION STRATEGY CONCEPT TO IMPROVE ECONOMIC CONDITIONS OF RURAL HOUSEHOLDS

2020 ◽  
Vol 10 (4) ◽  
pp. 699-711
Author(s):  
M.A. Volokhova ◽  
Keyword(s):  
Decision Making ◽  
Rural Population ◽  
Methodological Approach ◽  
Rural Households ◽  
Well Being ◽  
Economic Situation ◽  
Living Standard ◽  
Rural Settlements ◽  
Decision Strategy ◽  
Saratov Region

Modern conditions for the development of market relations leave a significant imprint on all main aspects of rural life. The socio-economic situation of rural households is dangerously dependent on the fluctuations of various institutions, be it the labor institution, the food market or the production system. Under these conditions, increasing attention is being paid to the development of targeted programs to improve the living standard and the socio-economic situation of the population in rural settlements. The article discusses a methodological approach to assess the living standards of rural settlements in the context of municipal districts of the Saratov region, in particular, the Samoilovsky municipality. Basing on the participatory approach, categories of the rural population are determined by income level and a direct correlation dependence of the demographic situation (birth rate, mortality, migration rate) and the level of rural household income are revealed. The parameters of the resource of patience and the boundaries of the passive expectation for the poor and impoverished layers of the rural population, as well as the prerequisites for the passivity of the able-bodied population to participate in the processes of increasing their own well-being and well-being of others are determined. The conditions and parameters of the property status compelling the activation of the use of internal material and social sources of income are revealed. Three levels of decision-making strategies for improving the financial situation of the family are distinguished: employees, employers (agricultural enterprises and K(F)X), authorities (district administration). As a result, a concept of a decision-making strategy was developed to improve the material situation of households in rural settlements of the Saratov region. The economic factor (the size of wages) has one of the decisive effects on all the demographic processes taking place in society.

scholarly journals FAME (v1.0): a simple module to simulate the effect of planktonic foraminifer species-specific habitat on their oxygen isotopic content

2018 ◽  
Vol 11 (9) ◽  
pp. 3587-3603 ◽  
Author(s):  
Didier M. Roche ◽  
Claire Waelbroeck ◽  
Brett Metcalfe ◽  
Thibaut Caley
Keyword(s):  
Late Holocene ◽  
Simple Module ◽  
Climatic Conditions ◽  
Model Data ◽  
Planktonic Foraminifer ◽  
Planktonic Foraminifers ◽  
Oxygen Isotopic ◽  
Species Specific ◽  
Almost All ◽  
Multiproxy Approach

Abstract. The oxygen-18 to oxygen-16 ratio recorded in fossil planktonic foraminifer shells has been used for over 50 years in many geoscience applications. However, different planktonic foraminifer species generally yield distinct signals, as a consequence of their specific living habitats in the water column and along the year. This complexity is usually not taken into account in model–data integration studies. To overcome this shortcoming, we developed the Foraminifers As Modeled Entities (FAME) module. The module predicts the presence or absence of commonly used planktonic foraminifers and their oxygen-18 values. It is only forced by hydrographic data and uses a very limited number of parameters, almost all derived from culture experiments. FAME performance is evaluated using the Multiproxy Approach for the Reconstruction of the Glacial Ocean surface (MARGO) Late Holocene planktonic foraminifer calcite oxygen-18 and abundance datasets. The application of FAME to a simple cooling scenario demonstrates its utility to predict changes in planktonic foraminifer oxygen-18 to oxygen-16 ratio in response to changing climatic conditions.

scholarly journals Methodological approach to assess tractor stability in normal operation in field using a commercial warning device

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
V. Rondelli ◽  
R. Martelli ◽  
C. Casazza ◽  
A. Guarnieri
Keyword(s):  
Methodological Approach ◽  
Climatic Conditions ◽  
Normal Operation ◽  
Loss Of Stability ◽  
Soil Morphology ◽  
Complex Issue ◽  
Probable Loss ◽  
Protective Structures ◽  
Commercial Device ◽  
Warning Device

Since Roll-Over Protective Structures (ROPS) are mandatory on tractors, the number of fatalities caused in the event of an upset is definitely reduced. Nevertheless, fatal accidents caused by machine loss of stability are still of great concern. In fact, despite ROPS have reduced injury to agricultural operators, tractor stability is still a complex issue due to its high versatility in use, especially considering normal operations in field, when interactions with the environment such as soil morphology and climatic conditions are involved, as well as interactions with operator skills and experience. With the aim of collecting data on different variables influencing the dynamics of tractors in field, a commercial device that allows the continuous monitoring of working conditions and the active configuration of the machines was fitted on standard tractors in normal operation at the experimental farm of the Bologna University. The device consists of accelerometers, gyroscope, GSM/GPRS, GPS for geo-referencing and a transceiver for the automatic recognition of tractor-connected equipment. A microprocessor processes data and provides information, through a dedicated algorithm requiring data on the geometry of the tested tractor, on the level of risk for the operator in terms of probable loss of stability and suggests corrective measures to reduce the potential instability of the tractor.

scholarly journals Potential of Sunflower-Legume Intercropping: A Way Forward in Sustainable Production of Sunflower in Temperate Climatic Conditions

2021 ◽  
Author(s):  
Brankica Babec ◽  
Srđan Šeremešić ◽  
Nada Hladni ◽  
Nemanja Ćuk ◽  
Dušan Stanisavljević ◽  
...  
Keyword(s):  
Red Clover ◽  
Climatic Conditions ◽  
Sustainable Production ◽  
Oilseed Crop ◽  
Common Vetch ◽  
General Belief ◽  
Climate Conditions ◽  
Sole Crop ◽  
Sole Cropping ◽  
Almost All

Changing climate conditions coupled with the transformations of cultivation practices and land use in sole crop-based sunflower production may significantly decline yield stability of this oilseed crop. Given that sunflower takes the third place in the world oilseed market, with 45 million tons per year, and in the fourth place in vegetable oil production, it is necessary to adapt production technologies toward sustainable agriculture. Considering that, the goal of the research was to analyze and beneficial sustainable production technology of sunflower in intercropping systems. A four-year trial was conducted in Serbia’s agroecological rain-fed conditions (45°34’23.2&quot;N 19°86’18.9&quot;E) using a split-plot design. Two oil types and one confectionary sunflower hybrid were intercropped with common vetch, red clover and alfalfa. Analyses showed that intercropping of sunflower with common vetch resulted in the decrease in almost all sunflower trait values. Also, sunflower × alfalfa intercropping provided to be the most appropriate. The yield of NS Gricko and Rimi PR were statistically on the same level with sole cropping, while alfalfa biomass had better results when intercropped with NS Gricko as compared to sole cropping. Concerning the general belief that yields are more stable in intercropping than in sole crop, further research in this respect is needed, in addition to the research of time and method of sowing.

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