scholarly journals Population Dynamics of Pometia for The Period of Post-Selective Logging in Tropical Rainforest, Southern Papua, Indonesia

2016 ◽  
Vol 8 (3) ◽  
pp. 321
Author(s):  
Agustinus Murdjoko ◽  
Djoko Marsono ◽  
Ronggo Sadono ◽  
Suwarno Hadisusanto
Keyword(s):  
Population Dynamics ◽  
Tropical Rainforest ◽  
Biology Education ◽  
Selective Logging ◽  
Composition And Structure ◽  
Significant Difference ◽  
Before And After ◽  
Permanent Sample Plot ◽  
Logged Forest ◽  
Species Composition And Structure

<p>Tropical rainforest changed in term of structure, composition and population, resulting from logging. One of target trees during logging is <em>Pometia</em>. Our goals of this research were to answer that (1) How were survival, growth, fecundity and population growth rate (λ) of <em>Pometia</em> within remnant stands?; (2) what were driving factors to explain population dynamics of <em>Pometia</em> within logged forest?. Data were derived from three hectares-permanent sample plot (PSP) in logged forest of PT Tunas Timber Lestari. Integral Projection Models (IPMs) were applied to analyze population dynamics. The study showed dynamically that probability of the individuals of <em>Pometia</em> survived in this area did not significantly differ among their size, while stands showed the significant difference between small and large individuals. The growth of both individuals of <em>Pometia</em> and stands varied significantly in different size. The probability of fecundity both <em>Pometia</em> and stands were significantly different among size. The population of <em>Pometia</em> has been increasing for about a decade as the population of all stands was growing as well. Moreover, the regular documentation of species composition and structure before and after logging is necessary as a control of biodiversity. Therefore, a proper protocol to monitor the biodiversity should be designed by government and disseminated it to logging companies.    </p><p><strong>How to Cite</strong></p><p>Murdjoko, A., Marsono, D., Sadono, R. &amp; Hadisusanto, S. (2016). Population Dynamics of Pometia for The Period of Post-Selective Logging in Tropical Rainforest, Southern Papua, Indonesia. <em>Biosaintifika: Journal of Biology &amp; Biology Education</em>, 8(3), 321-330. </p>

The consequences of selective logging for Bornean lowland forest birds

1992 ◽  
Vol 335 (1275) ◽  
pp. 443-457 ◽  
Keyword(s):  
Population Dynamics ◽  
Bird Species ◽  
Selective Logging ◽  
Forest Birds ◽  
Primary Forest ◽  
Bird Conservation ◽  
Lowland Forest ◽  
Dipterocarp Forest ◽  
Logged Forest ◽  
Lowland Dipterocarp Forest

In lowland dipterocarp forest in Sabah, Malaysia, most primary forest bird species were present in areas selectively logged eight years previously. However, certain taxa, notably flycatchers, woodpeckers, trogons and wren-babblers, became comparatively rare. In contrast, nectarivorous and opportunistic frugivorous species were significantly more abundant. Few species appeared to change foraging height, but netting rates suggest that the activity of some species had increased, or that some birds ranged over larger areas after logging. Although there is still much to be learned about the survival of birds in logged forest, large areas of this habitat are important for bird conservation. However, the susceptibility of logged forest to fire, and our present incomplete understanding of bird behaviour and population dynamics in logged forests mean that they should not be considered by conservationists as alternatives to reserves of primary forest.

scholarly journals EFFECTIVENESS OF THE CONCEPTUAL CHANGE METHOD ON UNDERSTANDING PLANT MASS INCREASE

2019 ◽  
Vol 18 (4) ◽  
pp. 569-582
Author(s):  
Katja Gobec ◽  
Jelka Strgar
Keyword(s):  
Conceptual Change ◽  
Science Teachers ◽  
Agricultural Education ◽  
Biology Education ◽  
Experimental Teaching ◽  
Significant Difference ◽  
Before And After ◽  
Teaching Unit ◽  
Students Attitudes ◽  
Mass Increase

This research aimed to assess the influence of the method of conceptual change on understanding the concept of increasing the mass of plants among 414 students in agricultural education in Slovenia. In photosynthesis, biomass is produced, so understanding these processes is essential for successful agriculture. Data were collected using a knowledge test and a questionnaire that were administered before and after the traditional and experimental teaching units. The results allowed the conclusion that the method of the conceptual change (experimental teaching unit) was significantly more effective than the traditional method in improving the understanding of the contribution of solar energy and carbon dioxide to the increase in the mass of plants. There was no significant difference in the improvement of knowledge about the contribution of the minerals that plants receive through their roots. Understanding the contribution of water to the increase of the mass should be tested further because of the unexpected misconception that influenced the results that was found among students. Students’ attitudes toward biology and photosynthesis were significantly better after the experimental teaching unit. Considering these findings, other topics should be prepared using the method of the conceptual change to assist biology and science teachers in agricultural education. Keywords: agricultural education, biology education, conceptual change, photosynthesis, plant mass.

scholarly journals Development of monopoly mite game as a health promotion media to increase knowledge and understanding about house dust mites in student boarding house

2021 ◽  
Vol 1 (1) ◽  
pp. 18-25
Author(s):  
Muhimatul Arifah ◽  
Ainur Rofieq ◽  
Yuni Pantiwati
Keyword(s):  
Health Promotion ◽  
Data Analysis ◽  
House Dust ◽  
Biology Education ◽  
T Test ◽  
House Dust Mites ◽  
Average Value ◽  
Significant Difference ◽  
Before And After ◽  
Boarding House

Student’s knowledge of house dust mite (TDR) is still limited as well as the learning media used are uncomplicated. However, aside from learning outcome, knowledge of environmental health and hygiene are ignored. This study aims to produce health promotion media and analyze the effectiveness. This type of study was conducted by Research and Development (R&D) modified model by Borg & Gall. Data were collected from material expert, media expert, and extensive trial (experiments) that involving 30 students of Biology education department who have taken parasitology courses. As data analysis uses paired t-test (paired sample t-test). The result of the Mite Game Monopoly health media promotion products shows the validation of media experts and material experts are categorized very well with percentages of 97% and 89%. The result of data analysis obtained a value P < 0.05 which means there is a significant difference in the average value of pretest and posttest, it shows an increase of knowledge and understanding of TDR between before and after using the Mite Game Monopoly media.

scholarly journals Impact of Seriphium plumosum densification on Mesic Highveld Grassland biodiversity in South Africa

2020 ◽  
Vol 7 (4) ◽  
pp. 192025 ◽  
Author(s):  
Susannah C. Graham ◽  
Alan S. Barrett ◽  
Leslie R. Brown
Keyword(s):  
South Africa ◽  
Species Diversity ◽  
Species Composition ◽  
Plant Species ◽  
Plant Species Diversity ◽  
Composition And Structure ◽  
Significant Difference ◽  
Grassland Biodiversity ◽  
Intermediate Density ◽  
Species Composition And Structure

Mesic Highveld Grassland is important for biodiversity conservation, but is threatened by bush densification from Seriphium plumosum . This indigenous densifier spreads rapidly and outcompetes other herbaceous species, changing the species composition and structure of grasslands. This study looks at three different densities of S. plumosum and how these affect grassland biodiversity within Telperion, Mpumalanga, South Africa. An intermediate density of S. plumosum (1500 individuals (ind) ha −1 ) resulted in the highest plant species diversity ( H = 2.26), a low density (24 ind ha −1 ) was moderately diverse ( H = 1.96) and a high density (9500 ind ha −1 ) was least diverse ( H = 1.78). There were differences between the three densities in terms of plant species diversity, with the intermediate density being significantly more diverse ( p < 0.01) than both the low and high densities. Findings indicate that there was a significant difference between the sites in terms of ecological successional status ( p < 0.01). The presence of S. plumosum at low densities can be considered an integral part of the environment. It is important that in areas where S. plumosum occurs, it should be monitored. If this species is not in balance within its environment and it starts becoming dense, it will negatively affect the biodiversity, species composition and structure of the habitat.

scholarly journals Does selective wood exploitation affect amphibian diversity? The case of An'Ala, a tropical rainforest in eastern Madagascar

Oryx ◽  
2004 ◽  
Vol 38 (4) ◽  
pp. 410-417 ◽  
Author(s):  
Denis Vallan ◽  
Franco Andreone ◽  
Vola H. Raherisoa ◽  
Rainer Dolch
Keyword(s):  
Species Composition ◽  
Tropical Rainforest ◽  
Selective Logging ◽  
Individual Species ◽  
Short Term ◽  
Low Level ◽  
Forest Exploitation ◽  
Before And After ◽  
Secondary Habitats ◽  
Tree Frogs

The diversity of amphibians before and after low-level forest exploitation in An'Ala forest in central-eastern Madagascar was compared over the course of 4 years. Neither abundance nor diversity of amphibians generally were significantly affected by low-level selective logging, although the abundance of individual species differed. Mantelline anurans were the most sensitive, in contrast to the tree frogs of the subfamily Boophinae (Mantellidae) and Cophylinae (Microhylidae). The abundance of Mantellinae anurans decreased by 15.8% after logging, whereas Boophinae and Microhylidae anurans increased by 12.1% and 3.7%, respectively. In general, species strongly tied to rainforest habitat showed a non-significant 10.1% decrease in abundance after logging. It appears therefore that amphibians are relatively resilient to a low-level of forest exploitation and their diversity is apparently not affected, at least in the short-term. This and other studies have, however, shown that logging commonly results in a shift in species composition, with species typical of pristine rainforests being replaced by species adapted to secondary habitats.

scholarly journals Managing threatened ungulates in logged-primary forest mosaics in Malaysia

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243932
Author(s):  
Mark Rayan D. ◽  
Matthew Linkie
Keyword(s):  
Peninsular Malaysia ◽  
Selective Logging ◽  
Primary Forest ◽  
Sampling Effort ◽  
Forest Management Planning ◽  
Lower Elevation ◽  
Significant Difference ◽  
Logged Forest ◽  
Timber Plantations ◽  
Species Specific

Across the tropics, large-bodied mammals have been affected by selective logging in ways that vary with levels of timber extraction, collateral damage, species-specific traits and secondary effects of hunting, as facilitated by improved access through logging roads. In Peninsular Malaysia, 3.0 million hectares or 61 percent of its Permanent Reserved Forests is officially assigned for commercial selective logging. Understanding how wildlife adapts and uses logged forest is critical for its management and, for threatened species, their conservation. In this study, we quantify the population status of four tropical ungulate species in a large selectively logged forest reserve and an adjacent primary forest protected area. We then conduct finer scale analyses to identify the species-specific factors that determine their occurrence. A combined indirect sign-camera trapping approach with a large sampling effort (2,665 km and 27,780 trap nights surveyed) covering a wide area (560 km2) generated species-specific detection probabilities and site occupancies. Populations of wild boar were widespread across both logged and primary forests, whereas sambar and muntjac occupancy was lower in logged forest (48.4% and 19.2% respectively), with gaur showing no significant difference. Subsequent modelling revealed the importance of conserving lower elevation habitat in both habitat types, particularly <1,000 m asl, for which occupancies of sambar, muntjac and gaur were typically higher. This finding is important because 75 percent (~13,400 km2) of Peninsular Malaysia’s Main Range Forest (Banjaran Titiwangsa) is under 1,000 m asl and therefore at risk of being converted to industrial timber plantations, which calls for renewed thinking around forest management planning.

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

Melatih Kepemimpinan Perangkat Desa Kebonharjo Kulonprogo: Membangun Sikap Anti Korupsi

2018 ◽  
Vol 1 ◽  
pp. 107
Author(s):  
Adi Heryadi ◽  
Evianawati Evianawati
Keyword(s):  
Transformational Leadership ◽  
Data Collection ◽  
Paired Samples ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Sample Test ◽  
Corruption Perception ◽  
Measuring Tool

This study aims to prove whether transformational leadership training is effective for building anti-corruption attitudes of villages in Kebonharjo village, subdistrict Samigaluh Kulonprogo. This research is an experimental research with one group pre and posttest design.Subject design is 17 people from village of 21 candidates registered. Measuring tool used in this research is the scale of anti-corruption perception made by the researcher referring to the 9 anti-corruption values with the value of reliability coefficient of 0.871. The module used as an intervention made by the researcher refers to the transformational leadership dimension (Bass, 1990). The data collected is analyzed by statistical analysis of different test Paired Sample Test. Initial data collection results obtained sign value of 0.770 which means> 0.05 or no significant difference between anti-corruption perception score between before and after training. After a period of less than 1 (one) month then conducted again the measurement of follow-up of the study subjects in the measurement again using the scale of anti-corruption perception. The results of the second data collection were analysed with Paired Samples Test and obtained the value of 0.623 sign meaning p> 0.05 or no significant difference between post test data with follow-up data so that the hypothesis of this study was rejected.

Long-term dynamics and destruction of marsh vegetation in the Kolokolkova Bay of the Barents Sea

2012 ◽  
pp. 66-77 ◽  
Author(s):  
I. A. Lavrinenko ◽  
O. V. Lavrinenko ◽  
D. V. Dobrynin
Keyword(s):  
Species Composition ◽  
Plant Communities ◽  
Barents Sea ◽  
Mean Value ◽  
Marsh Vegetation ◽  
Composition And Structure ◽  
The Mean ◽  
Species Composition And Structure

The satellite images show that the area of marshes in the Kolokolkova bay was notstable during the period from 1973 up to 2011. Until 2010 it varied from 357 to 636 ha. After a severe storm happened on July 24–25, 2010 the total area of marshes was reduced up to 43–50 ha. The mean value of NDVI for studied marshes, reflecting the green biomass, varied from 0.13 to 0.32 before the storm in 2010, after the storm the NDVI decreased to 0.10, in 2011 — 0.03. A comparative analysis of species composition and structure of plant communities described in 2002 and 2011, allowed to evaluate the vegetation changes of marshes of the different topographic levels. They are fol­lowing: a total destruction of plant communities of the ass. Puccinellietum phryganodis and ass. Caricetum subspathaceae on low and middle marches; increasing role of halophytic species in plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. typicum on middle marches; some changes in species composition and structure of plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. festucetosum rubrae on high marches and ass. Parnassio palustris–Salicetum reptantis in transition zone between marches and tundra without changes of their syntaxonomy; a death of moss cover in plant communities of the ass. Caricetum mackenziei var. Warnstorfia exannulata on brackish coastal bogs. The possible reasons of dramatic vegetation dynamics are discussed. The dating of the storm makes it possible to observe the directions and rates of the succession of marches vegetation.

SUBLINGUAL VITAMIN D3 DRUG THERAPY IN VITAMIN D DEFICIENCY PATIENTS AT PRAVARA RURAL HOSPITAL

2019 ◽  
pp. 18-20
Author(s):  
Sanjeeva Kumar Goud T ◽  
Rahul Kunkulol
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Vitamin D3 ◽  
Serum Vitamin ◽  
Cross Sectional ◽  
Serum Vitamin D ◽  
Significant Difference ◽  
Before And After

The present study was aimed to study the effect of Sublingual Vitamin D3 on Serum Vitamin D level in Vitamin D deficiency patients. This was a cross-sectional and interventional study. All the Vitamin D deficiency patients of age 18-60years and either gender, willing to participate in the study were included. Patients who had greater than 20 ng/ml were excluded from the study. The total number of participants in our study was 200, out of these 111 males and 89 females, the mean age in our study was 51.07 ± 7.39Yrs. All volunteers were given sublingual vitamin D3 (60,000IU) in six doses every fifteen days of follow up for 3 months. The subject’s serum 25(OH)D levels were estimated before and after the treatment of sublingual vitamin D3. There was a statistically significant difference in serum vitamin D3 level before 16.61±6.71 ng/ml and after 35.80±7.80 ng/ml after treatment with Sublingual Vitamin D3. Six doses of 60,000IU of Vitamin D3 sublingual route having improved the role of serum 25(OH)D levels in the treatment of Vitamin D3 deficiency patients.Keywords: Vitamin D3; Sublingual route

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