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Wyświetlanie 1-15 z 22
Tytuł:
Dziwidło olbrzymie (Amorphophallus titanum), niezwykła bylina sumatry
Titan arum (Amorphophallus titanum), amazing perennial plant of Sumatra
Autorzy:
Wiatrowska, Blanka
Węgiel, Andrzej
Kęsy, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/1033714.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Tematy:
Amorphophallus titanum
endemic species
lowland equatorial evergreen rainforests
Sumatra
wiecznie zielone lasy tropikalne
gatunek endemiczny
Opis:
Amorphophallus titanum niezwykle rzadko obserwowany, endemiczny gatunek Sumatry, jest byliną wykształcająca jeden z największych kwiatostanów świata. Osiągająca ok. 3 m wysokości kolba i ujmująca ją purpurowa pochwa kwiatostanowa, skutecznie wabią zapylające roślinę chrząszcze, błonkówki oraz muchówki, które zwiedzione intensywnym zapachem padliny, ciepłem wydzielanym przez kwiatostan i jego barwą, kierują się ku znajdującym się w jego wnętrzu kwiatom. Mimo zadziwiających rozmiarów dziwidła olbrzymiego, jego biologia nie została dobrze poznana, a powierzchnia okołorównikowych lasów dwuskrzydlcowych Azji Południowo-Wschodniej, w których znajdują się jego nieliczne, naturalne stanowiska, z roku na rok kurczy się. Deszczowe lasy Indonezji i Malezji, będące jednym z głównych centrów różnorodności biologicznej na świecie, wycinane lub wypalane są bowiem pod plantacje olejowca gwinejskiego (Elaeis guineensis), które w samej Indonezji zajmują już ok. 7,7 mln ha.
Amorphophallus titanum, an extremely rare, endemic Sumatran species, is a perennial plant which forms one of the largest inflorescences in the world. Reaching up to approx. 3 m in height, the spadix is surrounded by a purple flower sheath which attracts the pollinators - beetles, hymenoptera and flies. Those, deceived by an intense scent of carrion emitted by the flowers and also by its colour, are lured to the flowers hidden inside the spadix. Despite its remarkable size, A. tutanum's biology has not been well known. The equatorial area of Dipterocarpaceae forests in SE Asia, which is the natural habitat of A. titanium, is dwindling. The Indonesian and Malay rainforests, ones of the main biodiversity hotspots in the world, are being cut and burnt down in order to establish African oil palm (Elaeis guineensis) plantations, which only in Indonesia cover an area of approx. 7,7 mln ha.
Źródło:
Kosmos; 2018, 67, 2; 257-262
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal Driven Mechanism of the Surface Chlorophyll-A Distribution along the Western Coast of Sumatra
Autorzy:
Sari, Qurnia Wulan
Siswanto, Eko
Utari, Putri Adia
Saputra, Okta Fajar
Lestiana, Hilda
Holidi
Subiyanto
Yuniarti
Iskandar, Iskhaq
Powiązania:
https://bibliotekanauki.pl/articles/2202258.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coastal
equatorial wind
MODIS
Sumatra
surface chlorophyll-a
Opis:
The chlorophyll-a (chl) abundances on the Fisheries Management Area of Indonesia Republic (WPP-RI 572), as fishery resources over the western coast of Sumatera (WSC) and Sunda Strait, were examined in this study. The extensive investigation on the mechanism ocean dynamics on chl variability along WSC was observed by using remotely sensed data on the surface. The spatial analysis was conducted using the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua Ocean colour data for a period of January 2003 to December 2015. On seasonal time scale, the surface chlorophyll-a (schl) concentration in the southern tip of Sumatra is higher than the schl in the northern tip of Sumatra. The obtained results showed that the schl concentration in the southern tip of Sumatra increases (decreases) during the southeast (northwest) monsoons. Interestingly, its interactions with the southeast monsoon wind result in intensified coastal upwelling along the monsoon trough in July – August. It triggered a large bloom of the schl concentration from the upwelling region of southern tip Sumatra. Moreover, the schl in the center region followed the peak of the equatorial wind during the period transition in the Indian Ocean which is controlling the dynamics ocean such as upwelling event. Meanwhile, the opposite situation of the schl concentration observed low along the western coast of Sumatra during the northwest monsoon. At the same time, strong upwelling observed at the northern tip of Sumatra was associated with intense cooling on the sea surface temperature. It triggered a large bloom of high schl water from the upwelling region of northern Sumatra Island.
Źródło:
Journal of Ecological Engineering; 2022, 23, 11; 254--260
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Chemical Properties of Peats under Different Land Uses in South Sumatra, Indonesia
Autorzy:
Armanto, M. Edi
Powiązania:
https://bibliotekanauki.pl/articles/123739.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
chemical properties
peats
land uses
Opis:
The research aimed at comparing the chemical properties of peats under different land uses in peats dome of the catchment area of the Sibumbung River and the Komering River in Pedamaran Sub-Districts, OKI South Sumatra, Indonesia. The research was conducted in January 2019 and used a Randomized Complete Block Design with two blocks and five natural treatments namely swamp grass, bush swamp, peat forest, oil palm, and intercropping between oil palm and pineapple. Most of the chemical properties of peats at the depth of 30-50 cm showed no changes due to the effects of land uses and drainage; however, there were significant differences with the peat depth of 5-15 cm. Decreasing organic C, exchangeable Al, Al saturation and soluble Fe on the cultivated peats were significantly different compared with the uncultivated peats. An increase in the available P, K, pH, CEC and base saturation on the cultivated peats were found and differed significantly on test level 5% compared with the uncultivated peats due to the application of ameliorant materials. The total N and C/N values were not significantly different. Most of the chemical properties of peats were decreased by the depth of peats. Soil ameliorant materials would change the buffering system of the peats to neutralize soil acidity and the pH increase.
Źródło:
Journal of Ecological Engineering; 2019, 20, 5; 184-192
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Orang utan - leśny człowiek
Autorzy:
Biedrzycki, W.
Powiązania:
https://bibliotekanauki.pl/articles/847388.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Tematy:
malpy czlekoksztaltne
gatunki ginace
gatunki zagrozone
orangutan
Borneo
Pongo pygmaeus
Sumatra
Pongo abelii
wystepowanie
ochrona zwierzat
Źródło:
Wszechświat; 2011, 112, 07-09
0043-9592
Pojawia się w:
Wszechświat
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of Selected Peatland Uses and Soil Moisture Based on TVDI
Autorzy:
Holidi, -
Armanto, M. Edi
Damiri, Nurhayati
Putranto, Dinar Dwi Anugerah
Powiązania:
https://bibliotekanauki.pl/articles/952455.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
remote sensing
land use
drought
fire
South Sumatra
Opis:
The conversion of peatland from forest to non-forest causes environmental damage and increases high land dryness. Mapping of peatland based on dryness is very important to control and prevent fires. This study aims at characterizing peatland based on the level of temperature vegetation dryness index (TVDI) and evaluating the correlation between TVDI value and soil moisture. The research was conducted in August 2018 during the dry season. The area of research located in peat hydrological unit of Sibumbung River – Batok River in Ogan Komering Ilir (OKI) District of South Sumatra Province covering 63,427 ha area that consists of various land uses. The result showed that extreme wet category is found in water bodies and secondary forests that have high density, moderate wet is found in paddy fields and grass, normal area is found in the area covered by low-density trees, moderate dry is found in shrubs and oil palm plantations with good management and extreme dry areas is found in grasses and oil palm with poor cultivation management. There is a correlation between the TVDI value to the soil moisture on 0–10 cm and 10–20 cm and 20–30 cm depth.
Źródło:
Journal of Ecological Engineering; 2019, 20, 4; 194-200
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Actual Status Assessment and Prediction of the Musi River Water Quality, Palembang, South Sumatra, Indonesia
Autorzy:
Rahutami, Syntia
Said, Muhammad
Ibrahim, Eddy
Herpandi
Powiązania:
https://bibliotekanauki.pl/articles/2202153.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
pollution index
quality status
water pollution
sedimentation
Opis:
Water pollution in rivers is still a crucial problem for the countries that use river water as the primary water source. This study aimed to determine the water quality of the Musi river and the content of heavy metals in water, sediment and mussels as well as to predict the water quality of the Musi river in the next five years. The water samples were taken from 18 stations (sampling points) from upstream to downstream to be checked physically, chemically and biologically. Prediction of the river water quality was made using the QUAL2Kw software. The research results show that the Musi River water is categorized as lightly polluted with concentrations of TSS and DO that have passed the threshold. The heavy metals in river water, such as Pb and Cr have also passed the quality standard. The Fe, Mn, and Zn concentrations are pretty high in the sediment. In turn, in mussels, the metals measured were Fe, Cu, and Zn. The prediction results reveal that several values of the river quality parameters will pass the threshold value with the same pattern tendency from each station.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 68--79
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatiotemporal visibility characteristics impacted by forest and land fire over airports in Sumatera and Borneo Island, Indonesia
Autorzy:
Ismanto, Heri
Hartono, Hartono
Marfai, Muh Aris
Powiązania:
https://bibliotekanauki.pl/articles/1051207.pdf
Data publikacji:
2019-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
smoke
weather minima
visibility severity index
airport
Sumatra
Borneo
Opis:
Smoke can reduce the airport’s visibility and is related to the aviation safety and efficiency. Low visibility has potential safety hazard, such GA-152 crashed in 1997, and thus there is a need to find out the visibility characteristics in airports over Sumatra and Borneo Island caused by 2015 forest fire. This research aims to analyse the spatiotemporal visibility characteristics over airports in Sumatera and Borneo Island using flight rule visibility below minima criteria and hazard probability. The analysis of smoke was characterized using visibility severity index (VSI) that is a function of visibility severity class and its probability level. Spatiotemporal analysis of severity index combined with hotspot and wind numerical weather model indicates that the worst impact visibility occurred in September and October 2015. The lowest visibility was occured over night until afternoon time period. The spread of VSI impact has a tendency to northward and northwestward. The very high VSI levels occurred at airports such: WIJJ (Jambi), WIBB (Pekanbaru), WAGG (Palangkaraya) which were impacted up to 70% of flight operations time with IFR visibility below minima; while the WIOS (Susilo-Sintang), which operates only on VFR, experienced about 92% of VFR visibility below minima at smoke climax period.
Źródło:
Quaestiones Geographicae; 2019, 38, 3; 5-16
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coal Dust Exposure Characteristic and Impact on Respiratory Impairment from Coal Unloading Station in Palembang, South Sumatra, Indonesia
Autorzy:
Wahyudi, Arie
Zulkifli, Hilda
Arita, Susila
Sitorus, Rico Januar
Powiązania:
https://bibliotekanauki.pl/articles/2173219.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coal dust
particulate matter
coal transportation
respiratory disorders
Opis:
Coal hauling, loading, and transportation activities impacted the emergence of coal dust which is harmful to health. The coal dust exposed from coal unloading stations and coal waterway transportation has escaped attention. This study aimed to determine the characteristics of coal dust, the influence of climate parameters on the spread of coal dust, and its impact on the health of children under five in the exposed area. The coal dust characteristics and concentrations of PM PM2.5 and PM10 were analyzed from ten points spread across three mining companies (A, B, and C). The effect of climate parameters on PM2.5 and PM10 was tested statistically. The results of the chemical analysis revealed that coal dust was dominated by the high content of Si, Al, S, and Fe. The concentration of PM2.5 and PM10 is affected by wind speed. PM2.5 and PM10 can exceed the annual threshold value, which has caused a high incidence of respiratory problems in two sub-districts, namely Makrayu and Gandus.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 113--120
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New species Chrysomelobia donati and Coccipolipus arturi (Acari, Prostigmata, Podapolipidae) connected with inspects from Cameroon and Sumatra
Nowe gatunki Chrysomelobia donati i Coccipolipus arturi (Acari, Prostigmata, Podapolipidae) związane z owadami z Kamerunu i Sumatry
Autorzy:
Haitlinger, R.
Powiązania:
https://bibliotekanauki.pl/articles/2152549.pdf
Data publikacji:
1989
Wydawca:
Polskie Towarzystwo Parazytologiczne
Opis:
Opisano dwa nowe gatunki roztoczy: Chrysomelobia donati z Ptyelus combinatus Dist. (Homoptera, Cercopidae) z Kamerunu oraz Coccipolipus arturi z Epilachne spersa H. (Coleoptera, Coccineilidae) z Sumatry.
Źródło:
Wiadomości Parazytologiczne; 1989, 35, 2; 161-164
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coastal Water Properties and Hydrodynamic Processes in the Malacca Strait: Case Study Northeastern Coast of Sumatra, Indonesia
Autorzy:
Koropitan, Alan Frendy
Barus, Ternala Alexander
Cordova, Muhammad Reza
Powiązania:
https://bibliotekanauki.pl/articles/2028143.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
vertically well-mixed
tidal mixing
coastal pollution
flow pattern
Opis:
Dynamic processes in the coastal waters play an important role in regulating the marine pollution distribution caused by riverine inputs and are relevant for coastal management. Here, the coastal water properties were investigated from field measurements and modeling hydrodynamic processes in the northeastern coast of Sumatra. The present study found that the river discharges affect a low salinity of 28–29 psu in the surface waters along near the coastal line. The river discharge might influence by strong La Niña with high rainfall in December 2010. However, the authors suggested that the effect of tidal mixing is stronger than the freshwater discharges, resulting in vertically well-mixed coastal waters in the region. The observed tidal range of 200 cm indicates a strong tidal mixing in the waters. The tidal elevation contributes more than 70% of the total measured sea elevation. The tidal current signal in which the flow pattern simulations show no significant differences among tide and wind-tide driven currents, is also dominant (77%).
Źródło:
Journal of Ecological Engineering; 2021, 22, 11; 16-29
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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