scholarly journals EFFET DES FACTEURS STATIONNELS SUR LA CROISSANCE RADIALE ET LA RÉPONSE DU PIN D’ALEP AU CLIMAT DANS LE MASSIF DE L’OUARSENIS, ALGÉRIE

2017 ◽  
Vol 329 (329) ◽  
pp. 17 ◽  
Author(s):  
Mohamed Sarmoum ◽  
Frédéric Guibal ◽  
Fatiha Abdoun
Keyword(s):  
Popu Lation

Lesrelations entre leclimat et lacroissance radiale sur la période 1967-2010 de neuf populations de pin d’Alep dans le massif de l’Ouarsenis (Nord-Ouest de l’Algérie) ont été étudiées en fonction des facteurs stationnels (substrat, altitude, exposition et âge des arbres) à l’aide de méthodes de dendrochronologie. Les variations interannuelles des épaisseurs de cernes ont été analysées. L’étude rétrospective de la croissance radiale indique une forte variabilité interannuelle des épaisseurs des cernes à l’intérieur d’une même popu- lation. Les paramètres statistiques calcu- lés indiquent une forte variabilité de la croissance radiale entre les populations, cette variabilité étant liée aux facteurs sta- tionnels et à l’âge des arbres. L’âge joue un rôle négatif sur l’épaisseur moyenne des cernes et sur le phénomène de persis- tance. La sensitivité (sensibilité au climat) moyenne des arbres tend à être plus éle- vée sur les substrats gréseux ou schisteux que sur les substrats calcaires. L’analyse des relations cerne-climat montre que le pin d’Alep est réactif aux précipitations de la période précédant ou contempo- raine de la formation du cerne. Les tem- pératures interviennent négativement sur la croissance radiale, surtout par leurs valeurs maximales. Les relations du pin d’Alep aux conditions climatiques sont modulées par les facteurs stationnels, notamment le substrat. Les populations les plus réactives se localisent davantage sur un substrat gréseux. Ces résultats constituent un descriptif utile pour com- prendre la plasticité écologique du pin d’Alep et sa réponse aux changements cli- matiques, afin de proposer des mesures destinées à assurer une meilleure protec- tion des pinèdes menacées depuis plu- sieurs décennies.

scholarly journals Etude de la dynamique des peuplements naturels de Pterocarpus ericaceus poir. (Fabaceae) surexploités au Togo

2010 ◽  
Vol 306 (306(4)) ◽  
pp. 45 ◽  
Author(s):  
Kossi Adjonou ◽  
Napo Ali ◽  
Adzo Dzifa Kokutse ◽  
Segla Kossi Novigno
Keyword(s):  
Popu Lation ◽  
Du Bois ◽  
Pterocarpus Erinaceus

Au Togo, l'exploitation de nombreuses essences de bois d'oeuvre de valeur telles que Pterocarpus erinaceus Poir. est menée sans respecter les principes d'aménagement forestier durable. Cette étude établit la situation sur l'exploitation et l'exportation du bois de P. erinaceus dans le pays et évalue les impacts de la surexploitation sur la dynamique des peuplements riches en cette espèce. L'étude est menée travers l'analyse des données d'inventaires forestiers réalisés dans la plaine centrale du Togo. Les inventaires ont été matérialisés suivant deux transects au sein de deux milieux contrastés, une zone où l'espèce est excessivement exploitée et une zone où elle est protégée. L'analyse de variance des paramètres structuraux indique une différence significative entre les diamètres moyen et dominant, les hauteurs totale et fût des arbres recensés dans la zone exploitée et de ceux de la zone protégée. Pour la zone exploitée, la répartition des arbres en classes de diamètre fait état d'une distribution typique en «L» décroissante traduisant une dynamique régulière de la popu-lation, alors qu'il s'agit d'une distribution en cloche symétrique pour les arbres de la zone protégée, caractéristique de peuplements ayant atteint un état d'équilibre. L'espèce présente une bonne capacité de régénération ouvrant de bonnes perspec-tives pour la production de plants en pépinière et pour des essais de plantation partir d'espèces locales telles que P. erinaceus, en vue de restaurer des formations naturelles dégradées. Étant donné la pression exercée sur ces formations, l'adoption effective de mesures de protection et de conservation de l'espèce est indispensable pour limiter la dégradation irréversible de ses écosystèmes et d'autres qui subissent le même sort, notamment par la mise en place de normes d'exploitabilité, le respect de la réglementation en vigueur en matière d'exploitation des ressources forestières au Togo. (Résumé d'auteur)

SOCIOLOGICAL ASSESSMENT OF THE STUDY OF PATIENTS ‘ OPINIONS ABOUT THE DRUG SUPPLY SYSTEM IN RUSSIA

2021 ◽  
Vol 9 (2) ◽  
pp. 12-17
Author(s):  
E.A. Telnova ◽  
A.V. Belova ◽  
A.A. Zagoruichenko
Keyword(s):  
Comparative Analysis ◽  
Research Methods ◽  
Significant Role ◽  
Waiting Times ◽  
Age Groups ◽  
Supply System ◽  
Drug Supply ◽  
Main Research ◽  
Law System ◽  
Popu Lation

This article analyzes the results of a sociological survey, which con- firmed the relevance of the issues of accessibility of providing medicines to various categories of citizens. The purpose of this study was to study the attitude of citizens to the existing system, as well as to identify the strengths and weaknesses of preferential security. The main research methods were: the method of studying and generalizing experience; comparative analysis; sociological survey; statistical. According to the presented data, the distribution of answers to questions is determined in % depending on the total number of respondents, including in the dynamics for the analyzed period (2019-2021). This study served as a tool for studying the key problems in obtaining preferential medicines (waiting times for a doctor to issue a prescription, the absence of a prescription in a pharmacy, the refusal of a doctor to issue medicines, etc.). Thus, the results of the conducted sociological survey showed that the LAW system plays a significant role in the structure of healthcare. At the same time, first of all, it is necessary to carry out additional work with various age groups of the popu- lation in the framework of providing information about the possibilities of the additional preferential security system.

scholarly journals Decentralization of the Zagreb urban region

Dela ◽  
2004 ◽  
pp. 519-530 ◽  
Author(s):  
Ksenija Bašić
Keyword(s):  
Population Change ◽  
Principal Component ◽  
Urban Region ◽  
Popu Lation

Since 1971 Zagreb urban region has been showing decentralization tendencies in its popu-lation development, while the decentralization of employment significantly lags behind. Migration is the principal component of population change.

Host Specificity, Dispersion and Persistence Through Drought of Two Arid Zone Mistletoes

1988 ◽  
Vol 36 (3) ◽  
pp. 299 ◽  
Author(s):  
N Reid ◽  
RT Lange
Keyword(s):  
Host Specificity ◽  
Arid Zone ◽  
Age Distribution ◽  
South Australia ◽  
Severe Drought ◽  
Branch Diameter ◽  
Popu Lation ◽  
Canopy Volume ◽  
Canopy Size

In the Whyalla region of South Australia, the loranthaceous mistletoe Amyema quandang (Lindl.) Tiegh. is virtually host-specific to Acacia papyrocarpa Benth., whereas Lysiana exocarpi (Behr.) Tiegh. (Loranthaceae) frequently parasitises 12 species in seven families, and less commonly infects seven other species. Amyema quandang is contagiously distributed with respect to Acacia papyrocarpa, larger trees supporting higher numbers of mistletoes. Host branch diameter (HBD) is assumed to index the age of individual mistletoes of Amyema quandang since seedlings only establish on thin host branches. The age distribution of A. quandang is skewed towards young plants since almost half the population para- sitises host branches Ͱ4 15 mm in diameter, within the range infected by seedlings. HBD is correlated with canopy size and the number of haustorial branches. The proportion of reproductive mistletoes increases with HBD and hyperparasitic L. exocarpi are confined to older plants of A. quandang with HBD Ͱ5 31 mm. As a result of the severe drought in 1982, 25% of large plants of A. quandang lost one or two main haustorial branches and suffered reductions in canopy volume, but only 4% died; by contrast, 31% of large L. exocarpi died and a further 19% lost most of their foliage. In the A. quandang population as a whole, recruitment balanced mortality (19%) over a 40 month period, but in the L. exocarpi popu- lation recruitment compensated for only half the mortality. None of the xerophytic shrub and tree hosts of either mistletoe died.

Population, Resources, and Technology: Political Implications of the Environmental Crisis

1972 ◽  
Vol 26 (2) ◽  
pp. 175-212 ◽  
Author(s):  
Nazli Choucri ◽  
James P. Bennett
Keyword(s):  
Environmental Crisis ◽  
The Political ◽  
Political Consequences ◽  
Precise Nature ◽  
Popu Lation ◽  
World Today ◽  
Technological Advances ◽  
Political Implications ◽  
The World ◽  
Exponential Rates

Virtually eveyone reconizes the existence on an environmental crisis in the world today, but may uncertianties remain concerning the precise nature of this cirsis and its domestic and interational implications. This much is clear: The world's popu;lation is continuing to grow at an alarming pace; finite resources are being utilized at exponential rates; and technological advances are contributing to negative ecological outcomes. These trends have been documented extensively. Their political significance, however, has received little attention if only because the visibility of the problem is such a recent phenomenon. This article is addressed to some of the political consequences and international implications of the environmental crisis.

scholarly journals 1972 Census: Population—Expected and Actual

1973 ◽  
Vol 12 (2) ◽  
pp. 123-134
Author(s):  
Mohammad Afzal
Keyword(s):  
Age Distribution ◽  
Sex Distribution ◽  
Popu Lation ◽  
Minimum Number ◽  
History Of ◽  
Quality Check

The information released in the Census Bulletin is limited to total popu¬lation down to district levels and for major cities, by sex. Details about age distribution and breakup by other characteristics will be released later. The conclusions drawn in this paper are tentative, subject to modification after details of the age-sex distribution and results of post enumeration quality check are known. The 1972 census differed from the previous ones in a number of ways. First, the census was carried out only in West Pakistan. Second, because of the circumstances leading to the separation of East Pakistan, the census which was due to be held in early 1971 was actually conducted in 1972, eleven years and eight months after 1961 census, instead of ten years which has been the normal practice in the Indo-Pakistan sub-continent since 1881. Third, the 1972 census was based on a schedule of enumeration consisting of only six questions, the minimum number ever asked in the census taking history of the region. These questions covered the following information about each member of the household:—

scholarly journals INFLUENCE OF SOIL PROPERTIES ON PLANT NEMATODE POPULATION DENSITY UNDER Chromolaena odorata FALLOW

2017 ◽  
Vol 16 (1) ◽  
pp. 105-115
Author(s):  
SEGUN I. ODEYEMI, ◽  
AFOLAMI, S. OLAOLUWA ◽  
AZEEZ J. OLADIPUPO
Keyword(s):  
Population Density ◽  
Parasitic Nematode ◽  
Abiotic Factors ◽  
Chemical Properties ◽  
Nematode Species ◽  
Plant Parasitic Nematode ◽  
Chromolaena Odorata ◽  
Popu Lation ◽  
Physico Chemical ◽  
Plant Parasitic

Relationships between soil abiotic factors and population densities of plant parasitic nematodes spe-cies under planted fallow of Chromolaena odorata was investigated for 2 years. Soil samples were collected at 0 – 30 cm depth to determine population of nematode species and soil physico-chemical properties was done at test initiation and afterwards at 6 months interval for 2 years. Four genera of plant parasitic nematode species (Meloidogyne spp., Pratylenchus spp, Helicotylenchus spp. and Xiphinema spp) and two free – living (Rhabditids and Dorylaimus spp.) were identified in the fallow. Soil organic Matter and soil N were significantly higher at 2 years than at 6, 12 and 18 months. Popu-lation density of plant parasitic nematode species significantly reduce as the fallow period extend reaching minimum at 2 years of fallow. Highest percentage reduction of 90.3 % was observed in popu-lation of Xiphinema at 2 years of fallow, followed by Pratylenchus with 51.5 % reduction in population and lowest reduction of 44 % was observed in Meloidogyne population. Negative and significant rela-tionship existed between soil physico-chemical properties and population density of plant parasitic nematode species indicated that soil characteristics play an important role in the abundance, distribu-tion and structure of nematode communities.

scholarly journals PENGARUH MUTASI, PROMOSI DAN BUDAYA ORGANISASI TERHADAP KINERJA PEGAWAI KANTOR KEMENTERIAN AGAMA KOTA BANJARBARU

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Taufiqurrahman Noor
Keyword(s):  
Organizational Culture ◽  
Research Method ◽  
Quantitative Method ◽  
Multiple Linear Regressions ◽  
Popu Lation ◽  
Cultural Organization ◽  
Analysis Technique ◽  
Culture Performance ◽  
Linear Regressions ◽  
Simultaneous Influence

Abstract: This study aims to identify the effect of mutation, promotion and cultur-al organization towards employees’ performance of Religious Affairs Office in Banjarbaru City. The research method is quantitative method. There are 164 popu-lation and 116 samples. The analysis technique is multiple linear regressions. The results of this study indicate that the variable mutations, promotion and cultural organization have partial and simultaneous influence on employees’ performance of Religious Affairs Office in Banjarbaru City. The dominant variable which affect on employees’ performance is promotion. Keywords: mutation, promotion, organizational culture, performance Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh mutasi, promosi dan budaya organisasi terhadap kinerja pegawai Kantor Kementerian Agama Kota Banjarbaru. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif. Populasi berjumlah 164 dan sampel 116. Teknik analisis data dengan menggunakan regresi linear berganda. Hasil penelitian ini menunjukkan bahwa mutasi, promosi dan budaya organisasi berpengaruh berpengaruh secara parsial dan simultan dan terhadap kinerja pegawai Kantor Kementerian Agama Kota Banjarbaru. Variabel yang berpengaruh dominan terhadap Kinerja Pegawai adalah promosi. Kata kunci: mutasi, promosi, budaya organisasi, kinerja

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