Taxon-specific pollen deposition dynamics in a temperate forest zone, SE Poland: the impact of physiological rhythmicity and weather controls

Aerobiologia ◽  
2014 ◽  
Vol 31 (2) ◽  
pp. 219-238 ◽  
Author(s):  
Irena Agnieszka Pidek ◽  
Anneli Poska ◽  
Bogusław Michał Kaszewski
Keyword(s):  
Temperate Forest ◽  
Pollen Deposition ◽  
Forest Zone ◽  
Se Poland ◽  
The Impact

scholarly journals Total C and N storage and organic C pools of a Red-Yellow Podzolic under conventional and no tillage at the Atlantic Forest Zone, south-eastern Brazil

Soil Research ◽  
2003 ◽  
Vol 41 (4) ◽  
pp. 717 ◽  
Author(s):  
L. F. C. Leite ◽  
E. S. Mendonça ◽  
P. L. O. A. Machado ◽  
E. S. Matos
Keyword(s):  
Organic Carbon ◽  
Atlantic Forest ◽  
Soil Management ◽  
Microbial Biomass C ◽  
No Tillage ◽  
Forest Zone ◽  
Organic C ◽  
C Stocks ◽  
C And N ◽  
The Impact

A 15-year experiment in a clayey Red-Yellow Podzolic in the tropical highlands of Viçosa, Brazil, was studied in 2000, aiming to evaluate the impact of different management systems (no tillage, disk plowing, heavy scratcher + disk plowing, and heavy scratched) on the total organic carbon (TOC), total nitrogen (TN), and several organic carbon pools. A natural forest, adjacent to the experimental area, was used as reference. The greatest TOC and TN as well as microbial biomass C (CMB), light fraction C (CFL), and labile organic carbon (CL) stocks were observed in the Atlantic Forest, compared with all other systems. The long-term cultivation (±70 years) of this area, prior to the installation of the experiment, has led to soil degradation, slowing the C recovery. No tillage had the higher C and N stocks and greater CL pool at the surface (0–10 cm), indicating improvement in soil nutrient status, although none of the systems presented potential to sequester C-CO2. Sustainable tropical agricultural systems should involve high residue input and conservative soil management in order to act as a C-CO2 sink. The C stocks in the CMB, CFL, and CL compartments were more reduced in relation to the natural vegetation with higher intensity management than the TOC stocks. This result indicates that these C compartments are more sensitive to changes in the soil management.

Locomotor diversity within past and present guilds of large predatory mammals

Paleobiology ◽  
1985 ◽  
Vol 11 (4) ◽  
pp. 406-428 ◽  
Author(s):  
Blaire Van Valkenburgh
Keyword(s):  
Temperate Forest ◽  
Early Stage ◽  
Habitat Choice ◽  
Locomotor Behavior ◽  
Adaptive Divergence ◽  
Great Density ◽  
Hunting Mode ◽  
Large Predators ◽  
The Impact ◽  
Limb Proportions

The impact of environment, interspecific competition, and, to a lesser extent history, on the structure of the guild of large predatory mammals is explored in one fossil and four Recent communities. Two aspects are emphasized: (1) the number of species within each guild and (2) the extent of locomotor convergence as inferred from morphology among the constituent species. Locomotor behavior reflects habitat choice, hunting mode, and escape strategy, all of which appear to be important avenues of adaptive divergence among coexisting predators.Locomotor behavior in extinct and extant predators is determined from body weight and five measured characteristics of the postcranial skeleton, including ungual shape, elbow shape, and limb proportions. Results indicate that levels of morphologic and inferred ecologic similarity between large predators are higher in the tropical grassland guild of East Africa than in the equivalent guilds of either tropical or temperate forest. This may be due to the great density and diversity of terrestrial herbivores in the productive grasslands. The fossil guild, from the Late Chadron–Orellan (Oligocene) of North America, appears most similar to the tropical forest guilds, but the predators seem to have been slower and more robust than their modern counterparts. Since the Orellan represents an early stage in the evolution of large, fissiped carnivores, both ancestry and time could have influenced Orellan guild structure.

scholarly journals Nine-year record of Alnus pollen deposition in the Roztocze region (SE Poland) with relation to vegetation data

2012 ◽  
Vol 60 (2) ◽  
pp. 57-64 ◽  
Author(s):  
Irena A. Pidek
Keyword(s):  
Ground Level ◽  
Pollen Deposition ◽  
Long Distance ◽  
Pollen Monitoring ◽  
Future Studies ◽  
Vegetation Control ◽  
Average Value ◽  
Se Poland ◽  
Long Distance Transport ◽  
Distance Transport

Pollen deposition of alder has been measured at ground level by means of nine modifi ed Tauber traps in different plant communities according to rules of the Pollen Monitoring Programme (http://pmp.oulu.fi ). The series of data covers the period 1998-2006. The area under investigation is situated in the Roztocze (surroundings of the Guciów village) within the protective zone of the Roztocze National Park. During nine years of monitoring, significant variations were observed between single years of deposition. The occurrence of peak years (1998, 2001, 2003 and 2006) connected with higher production of <i>Alnus</i> pollen was observed at many pollen monitoring sites, but its relationship with different proportions of alder within the surrounding vegetation seems rather weak. The average value of annual pollen deposition of <i>Alnus</i> for the whole region was calculated at ca. 1370 grains &#8226; cm<sup>-2</sup>. At the sites situated within the open landscape, pollen influx values ranged from 442 (in 2005) to 6894 (in 1998). It seems that other factors than the proportion of alder within the vegetation control the deposition of <i>Alnus</i> pollen. Long-distance transport and meteorological factors such as wind speed and direction should be taken into account in future studies.

scholarly journals Trends of malaria infection in pregnancy in Ghana over the past two decades: a review

2022 ◽  
Vol 21 (1) ◽  
Author(s):  
Joseph Osarfo ◽  
Gifty Dufie Ampofo ◽  
Harry Tagbor
Keyword(s):  
Malaria Transmission ◽  
Malaria Infection ◽  
Low Birthweight ◽  
Parasite Prevalence ◽  
Forest Zone ◽  
The Past ◽  
Apparent Reduction ◽  
The Impact ◽  
Submicroscopic Parasitaemia ◽  
In Pregnancy

Abstract Background There has been a global decline in malaria transmission over the past decade. However, not much is known of the impact of this observation on the burden of malaria infection in pregnancy in endemic regions including Ghana. A narrative review was undertaken to help describe trends in malaria infection in pregnancy in Ghana. Among others, such information is important in showing any progress made in malaria in pregnancy control. Methods To describe trends in pregnancy-associated malaria infection in Ghana, a search and review of literature reporting data on the prevalence of asymptomatic Plasmodium falciparum infection in pregnancy was conducted. Results Thirty-six (36) studies, conducted over 1994–2019, were included in the review. In the northern savannah zone with largely seasonal malaria transmission, prevalence appeared to reduce from about 50–60% in 1994–2010 to 13–26% by 2019. In the middle transitional/forest zone, where transmission is perennial with peaks in the rainy season, prevalence apparently reduced from 60% in the late 1990 s to about 5–20% by 2018. In the coastal savannah area, there was apparent reduction from 28 to 35% in 2003–2010 to 5–11% by 2018–2019. The burden of malaria infection in pregnancy continues to be highest among teenagers and younger-aged pregnant women and paucigravidae. Conclusions There appears to be a decline in asymptomatic parasite prevalence in pregnancy in Ghana though this has not been uniform across the different transmission zones. The greatest declines were noticeably in urban settings. Submicroscopic parasitaemia remains a challenge for control efforts. Further studies are needed to evaluate the impact of the reduced parasite prevalence on maternal anaemia and low birthweight and to assess the local burden of submicroscopic parasitaemia in relation to pregnancy outcomes.

scholarly journals The origin of grasslands in the temperate forest zone of east-central Europe: long-term legacy of climate and human impact

2015 ◽  
Vol 116 ◽  
pp. 15-27 ◽  
Author(s):  
Petr Kuneš ◽  
Helena Svobodová-Svitavská ◽  
Jan Kolář ◽  
Mária Hajnalová ◽  
Vojtěch Abraham ◽  
...  
Keyword(s):  
Human Impact ◽  
Central Europe ◽  
Temperate Forest ◽  
Forest Zone ◽  
East Central Europe ◽  
East Central

scholarly journals Recent Vertebrate and Invertebrate Burrows in Lowland and Mountain Fluvial Environments (SE Poland)

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3413
Author(s):  
Paweł Mikuś
Keyword(s):  
Cross Sections ◽  
Lumbricus Terrestris ◽  
Geological Time ◽  
River Bank ◽  
Se Poland ◽  
Droughts And Floods ◽  
River Reach ◽  
Sediment Layers ◽  
Fluvial Environments ◽  
The Impact

Over geological time, fauna inhabiting alluvial environment developed numerous traces of life, called bioturbation structures. However, present literature rarely offers comprehensive and comparative analyses of recent bioturbation structures between different types of environments. In this paper, the distribution of recent animal life traces in two different fluvial environments (lowland and mountain watercourse) was examined. An analysis of a set of vertical cross-sections of river bank enabled to determine physical and environmental features of the burrows, as well as degree of bioturbation in individual sections. Most of the burrows were assigned to their tracemakers and compared between two studied reaches in relation to the geomorphic zones of a stream channel. A mesocosm was conducted using glass terraria filled with river bank sediment and specimens of Lumbricus terrestris. The experiment confirmed field observations on the ability of earthworms to migrate into deep sediment layers along plant roots. The impact of floods on fauna survival was assessed on the basis of observations of large floods in 2016, 2018 and 2019. The abundance, distribution and activity of fauna in the sediment are mainly controlled by the occurrence of high and low flows (droughts and floods), which was particularly visible in lowland river reach.

Holocene Lakes from Ramlat as-Sab'atayn (Yemen) Illustrate the Impact of Monsoon Activity in Southern Arabia

1998 ◽  
Vol 50 (3) ◽  
pp. 290-299 ◽  
Author(s):  
Anne-Marie Lézine ◽  
Jean-François Saliège ◽  
Christian Robert ◽  
Frédéric Wertz ◽  
Marie-Louise Inizan
Keyword(s):  
Indian Monsoon ◽  
Lacustrine Sediments ◽  
Maximum Activity ◽  
Pollen Deposition ◽  
Stable Isotope Ratios ◽  
Pollen Record ◽  
Trade Winds ◽  
Modern Pollen ◽  
Southern Arabia ◽  
The Impact

Paleoecology and paleohydrology of the Ramlat as-Sab'atayn (Southern Arabia) are reconstructed from a comparative study including sedimentology, mineralogy, stable isotope ratios of carbonates, and palynology of lacustrine sediments recovered from the al-Hawa depression. The section dates from 8700 to 7200 yr B.P. and records an early phase of flooding followed by distinct lacustrine development from 7800 to 7200 yr B.P., coeval with maximum activity of the Indian monsoon. Comparison of the pollen record with modern pollen deposition suggests that regional vegetation was then already of desert type and was related to strong seasonal trade winds.

scholarly journals MEDICAL-GEOGRAPHIC FACTORS OF POPULATION HEALTH IN THE NORTH OSSETIA

2021 ◽  
Vol 13 (1) ◽  
pp. 35-43
Author(s):  
Alexander BADOV ◽  
◽  
Oleg BADOV ◽  
Juliet BYAZROVA ◽  
Larisa DZAKHOVA ◽  
...  
Keyword(s):  
Mutual Influence ◽  
Practical Importance ◽  
Steppe Zone ◽  
Congenital Dislocation ◽  
Forest Zone ◽  
Factors Affecting ◽  
Geographic Factors ◽  
The North ◽  
The Republic ◽  
The Impact

Introduction. Medico-geographical researches are now becoming particularly relevant, since geographic methods with their inherent complexity, diversity, vision of the territory, the identification of medical geographic factors and the application of cartographic methods can explain the basis of those processes and phenomena that occur on the territory of our country and its regions in terms of the morbidity of the population and find ways to optimize the health system. Methods. Medical geography studies the impact of natural, socio-economic and environmental factors on the health of the population, examines the geography of the spread of diseases and identifies the territorial organization of health. Particular attention is paid to the complexity of research; The identification of interaction, mutual development and mutual influence of geographic factors affecting the health of the population in a particular region, as well as the application of GIS technologies and cartographic methods. Results (discussion). The natural conditions of North Os-setia (excluding the highlands) are generally favorable for the population living. Their diversity (despite the limited territory) leads to significant differences in the level and structure of the population morbidity. Within the republic there are five medical-geographical zones, each of which has its own natural-focal diseases. So, for example, rabies, echinococcosis, trichinosis, intestinal infection, leptospirosis, tularemia are characteristic for the steppe zone (the north of the republic); For the forest zone – ascaridosis, endemic goiter, dental caries, echinococcosis, rabies, trichinosis, leptospirosis. Congenital dislocation of the hip is common in the mountainous zone. And girls get this disease five times more often than boys. In addition, almost all of the republic is characterized by a shortage of fluoride, iodine and some other elements. Conclusions. The study of the geographical factors of the morbidity of the population is of great practical importance since it allows developing measures aimed at preventing many diseases.

scholarly journals Ecological and coenotic groups of Orenburg Region vascular plants flora and biotopes phytoindication

2020 ◽  
Vol 9 (4) ◽  
pp. 109-120
Author(s):  
Nazar Nikolayevich Nazarenko ◽  
Sergei Mikhailovich Pohlebaev ◽  
Aleksandr Vladimirovich Malaev ◽  
Irina Anatolyevna Tretyakova ◽  
Askhat Koblanovich Khodzhayev
Keyword(s):  
Wood Species ◽  
Vascular Plants ◽  
Temperate Forest ◽  
Ecological Factors ◽  
Regional Assessment ◽  
Forest Zone ◽  
Statistical Assessment ◽  
Group Schemes ◽  
Orenburg Region ◽  
Similar Assessment

The expert and statistical assessment of ecological and coenotic groups of Orenburg Region vascular plants flora has been done for A.L. Belgards coenomorphs scheme and scheme of vascular plants flora of temperate forest zone of European Russia. The regimes of principal ecological factors have identified for detected groups of flora. Both suggested schemes of groups give adequate and similar assessment of biotopes, proposed groups of Orenburg Region vascular plants flora are identified in phytometer scales space definitely and its groups can used for regional assessment of biotopes. It has been established, that steppe coenomorph has extensive coenotic amplitude in Orenburg Region conditions and make petrophilic, chasmophilic, mountain and semi-desert vegetation elements also. Sylvant coenomorph has formed boreal and nemoral sciophytes and heliosciophytes and coenotic group of semiarid steppe forests has not specific biotopic and coenotic value. Pratal coenomorph has been made up humidity-meadow flora, dry-meadow coenotic group is not specific. For Orenburg Region is recommends using unite pratal (meadow) and paludal coenomorphs and separation coenotic group of oligotrophic bogs and ruderal coenomorph, the separation of mountain coenotic group is not confirmed statistical. The best assessment of ecological flora of region are realize by combined coenomorphs and coenotic group schemes approach at the same time. It has been established methodical problems of statistical methods using by phytoindication, problems of transitional coenotic groups and problem of wood species assessment in phytometer scales, which are require further researches.

Sign in / Sign up

Export Citation Format

Share Document