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2018, Environmental and Experimental Biology
Three Philippine endemic gingers, Alpinia rufa C.Presl, Etlingera dalican (Elmer) A.D.Poulsen and Globba campsophylla K.Schum. are reported for the first time in the province of Davao Oriental, specifically in the buffer zone of the Mt. Hamiguitan Range Wildlife Sanctuary, Sitio Tumalite, Barangay La Union, San Isidro, Davao Oriental, Philippines. Full descriptions of these species, phenology, notes on local names, ethno-medicinal usage, availability status, propagation and habitat ecology along with their photographs are provided.
Journal of Tropical Biology and Conservation
Species Composition and Distribution of Zingiberaceae in Mt. Hamiguitan Expansion Site, Davao Oriental, Philippines2019 •
This study was conducted to assess the composition and distribution of gingers (Zingiberaceae) in Mt. Hamiguitan expansion site, Tumalite, San Isidro, Davao Oriental, Philippines. Transect walk and opportunistic sampling were carried out along established forest trails, rivers, creeks and streams. Fourteen (14) ginger species were found, of which 10 species are endemic to the Philippines, two species are introduced, and two species are unidentified to the species level. The species belong to two subfamilies (Alpinioideae and Zingiberoideae) and three tribes (Alpinieae, Globbeae, and Zingibereae). The species recorded include Alpinia haenkei C.Presl, Alpinia cf. vulcanica Elmer, Alpinia rufa C.Presl, Alpinia sp., Curcuma zedoaria (Christm.) Rosc., Curcuma longa L., Etlingera dalican (Elmer) A.D.Poulsen, Etlingera hamiguitanensis Naive, Etlingera sp., Geocharis fusiformis (Ridl.) R.M.Sm., Globba campsophylla K.Schum., Hornstedtia conoidea Ridl., Hornstedtia microcheila Ridl., and Meistera muricarpa (Elmer) Škorničk. & M.F.Newman. These species represent 47% of the total genera and 14% of the total species of Zingiberaceae in the Philippines. Cluster analysis (numerical analysis) using morphological descriptions supported present taxonomic placements of the species. The data indicated that G. fusiformis is the most abundant ginger in the area.
Modern Phytomorphology
New record of Plagiostachys albiflora Ridl. (Zingiberaceae) in the Philippines2019 •
A Philippine specimen of Plagiostachys albiflora Ridl. (Zingiberaceae) which was previously recorded only from the Malay Peninsula and Borneo was recently discovered in Mt. Malambo, Brgy. Datu Salumay, Marilog District, Davao City, Philippines. The specimen, described herein, constitutes the first record of the said species in the Philippines. Further, P. albiflora is the only non-endemic species among the Philippine Plagiostachys and is an addition to the seven known endemic species in the country. Existing populations of the species are rare and under severe threats due to anthropogenic activities and therefore call for immediate conservation initiatives.
JOURNAL OF ADVANCED BOTANY AND ZOOLOGY
Zingiberaceae in Mt. Bagalbal, Kalatungan Range, Lourdes, Valencia City, Bukidnon, Philippines2020 •
It is quite that Mindanao, the second largest island in Philippines is poorly known and understudied. The study aimed to identify and described morphologically family Zingiberaceae; determine the distribution of family Zingiberaceae and compare the affinity of the species through cluster analysis. Findings of the study revealed a total of 14 species belonging to two subfamily, two tribe and seven genus. Morphological characters of species are far more superior proven by the species to fall to their particular genera of which they are associated and it implies that the morphological descriptions agree with the numeric analysis. Furthermore, Zingiberaceae species distribution is generally scattered and dwells on the elevation of 900-1600 meters asl. Thus, monitoring of Zingiberaceae as indicator species should be conducted to assess the environmental conditions and conservation status of the forests in Mindanao.
The pollen morphology and pollen elemental composition of the selected Philippine native gingers in tribe Alpinieae (Alpinioideae: Zingiberaceae) viz., Amomum muricarpum Elm., Etlingera dalican (Elmer) A.D.Poulsen, E. philippinensis (Ridl.) R.M.Sm. and Hornstedtia conoidea Ridl. are not completely determined as well as their impacts in the pollen germination and pollen tube growth. In this study, the analyses were performed by light microscopy (LM), scanning electron microscopy (SEM) and energy dispersive x-ray (EDX) spectrometry to better understand their pollen surfaces and pollen elemental composition. Data revealed that the pollen sizes of A. muricarpum measured 45-80µm, E. dalican measured 65-75µm, E. philippinensis measured 60-65µm while H. conoidea measured 50-90µm. The four native species possess spheroidal shape and inaperturate pollen. However, pollen color of A. muricarpum and H. conoidea were yellowish-brown, while green to greenish-yellow for E. dalican and greenish for E. philippinensis. Ornamentation or exine sculpture of A. muricarpum is echinate, E. dalican is gemmate while E. philippinensis and H. conoidea is psilate. A greater proportion of potassium (K +) and sulfur (S 2-) were observed in the pollen of the four native gingers amongst other detected elements by EDX. Hence, studies on pollen characterization are important to perceive and reveal their morphological features, elemental composition and are useful for future studies on in vitro germination of the selected species.
Journal of Tropical Life Science
In vitro Studies on Pollen Viability, Pollen Germination and Pollen Tube Growth of Hornstedtia conoidea Ridl. – a Philippine Endemic Ginger Species2018 •
Zingiberaceous plants are predominantly propagated through underground rhizomes and seeds. In this study, the viability of pollen, rate of pollen germination and length of pollen tube of the Philippine endemic Hornstedtia conoidea were examined. Four petri plates containing pollen samples were prepared, of which two petri plates were used immediately after the collection, while the other two petri plates were stored for one week. The determination of pollen viability was made employing stain tests using IKI (iodine + potassium iodide) solution and safranin and measured immediately after the collection and after one week. Likewise , pollen germination test was carried out in vitro on agar medium and measured after 24 hours and one week of incubation. Data revealed that pollen viability was higher in the samples which were sown immediately with safranin with percentage pollen viability of 92.43%, while IKI test was lower with 89.36%. On the other hand, the pollen stored for one week measured 47.29% for safranin test and 33.14% for IKI test. The percentage germination of pollen after 24 hours was 72.65%, while 11.13% after one week. The pollen samples which were subjected for tube growth were examined for two weeks and gave positive results. Overall, it can be concluded that H. conoidea pollen can successfully be collected and stored for certain time. Knowledge regarding the pollen viability, pollen germination and pollen tube growth of this species will give practical benefit for plant breeding and conservation purposes, since H. conoidea is found in the wild, and as of now, the species has been recorded only in the Philippines.
Philippine Journal of Systematic Biology
Comparative Pollen Viability and Pollen Tube Growth of Two Endemic Philippine Etlingera (Zingiberaceae, Alpinioideae)2017 •
The pollen viability and pollen tube growth of Etlingera dalican and Etlingera philippinensis (Zingiberaceae) were examined from fresh samples under the light microscope (LM) and scanning electron microscope (SEM). Pollen measurements were 68-75µm for E. dalican and 60-65µm for E. philippinensis, having a spheroidal shape for hydrated pollen and an irregular shape for dry pollen for both species. E. dalican pollen has greenish-yellow color while that of E. philippinensis is greenish. Both species have inaperturate pollen but differ in their ornamentation, which is gemmate in E. dalican and psilate in E. philippinensis. E. dalican had 88.56% pollen viability while E. philippinensis had only 40.69%. The rate of pollen tube growth was faster in E. dalican (17.75 µm per day) than E. philippinensis (8.17 µm per day). The possible pollinators observed for the two species were butterflies of the genus Catopsilia, ants and flies. Additional information on the inflorescence and flower description of the two species are herein presented.
2019 •
A preliminary survey of chiropterans (bats) with potential zoonotic fungi was conducted as part of the Sowell-UNIMAS Expedition 2006. This survey was conducted at Kubah National Park, Matang, Sarawak from 14th to 16th August 2006. The main aim of this survey was to document variety of fungal isolates from bats external (ears) and internal (saliva and anal) swabs. All of the fungi species were subjected to both macroscopic and microscopic observations to characterize their morphology. Out of 23 species of bats observed, 13 (56.5%) species were found to contain 17 fungi isolates of the genus Aspergillus from five subgenera, five sections and six species. The fungi isolates were Aspergillus restrictus, A. sydowii, A. fumigatus, A. niger, A. clavatus and A. japonicus. The highest numbers of isolates recorded was for A. restrictus with six isolates followed by A. fumigatus and A. sydowii with two isolates respectively. Where as, A. niger, A. clavatus and A. japonicus each recorded with one isolate only. Aspergillus fumigatus was the first record isolated from bats the samples (n = 64) from Sarawak. It was reported that this isolate is a pathogenic and thermophilic (able to grow up to 65°C) isolate which was found to be on a lesion near ear opening of Hipposideros cervinus. Further work should be done to discover potential mycoflora in wildlife mammals.
A transect survey was conducted from 2 6 December 2004 in Niah National Park to estimate species diversity and relative abundance of birds and mammals. This study was conducted in four forest line transects: Madu Trail (TR1), Sungai Tangap (TR2), Niah Great Cave (TR3), Bukit Kasut (TR4), and one river transect along the Niah River (RT). A total of 521 birds representing 59 species from 23 families were recorded. The Black-Nest Swiftlet (Aerodramus maximus) and the Mossy-Nest Swiftlet (Aerodramus salanganus) were the most common species in the park. The family Timaliidae (babblers), with nine species, was recorded as the most diverse family, whereas Strigidae (owls) and Hirundinidae (swallows) were the least diverse families with one species in each. A total of 29 mammalian individuals representing seven species from four families were recorded. The family Sciuridae (squirrels) with three species was recorded as the most diverse family, whereas Cynocephalidae (flying lemurs) and Muridae (rodents) were the least diverse families with one species and one individual each. TR1 was recorded with the highest Shannon-Weiner index (diversity index) of H = 4.75 and H = 2.20 for birds and mammals respectively. The lowest bird H = 3.73 was recorded for TR2, whereas the lowest mammal H = 0 was recorded for TR2 and RT. Although this study does not identify factors that contribute to different species diversity at each transect line, field observations suggest that vegetation and human activities were the major elements that contributed to the observations found at each transect in this study. Studies on the vegetation types and potential disturbances that influence the faunal diversity will provide useful insights in conservation and management planning of this park.
Journal of Tropical Biology and Conservation ISSN …
Biodiversity assesment in a Sarawak lowland dipterocarp rainforest of Niah National Park2008 •
PhytoKeys
Medinilla theresae (Melastomataceae), a new species from ultramafic soils in the Philippines2018 •
IOP Conf. Series: Journal of Physics: Conf. Series 1242
Diversity of Zingiberaceae and traditional uses by three indigenous groups at Lore Lindu National Park, Central Sulawesi, Indonesia2019 •
Molecular Phylogenetics and Evolution
Recent oceanic long-distance dispersal and divergence in the amphi-Atlantic rain forest genus Renealmia L.f. (Zingiberaceae)2007 •
CMU Journal of Science
Litterfall Production and Turnover in the Long-Term Ecological Research Sites in Southern Philippines2018 •
2010 •
Proceedings of Colloquium on the Dered Krian National Park – Scientific Expedition 2016. Kuching, Sarawak.
COMPARISON STUDY ON DIVERSITY OF GINGERS (ZINGIBERACEAE) FROM TWO LIMESTONE HILLS IN THE NORTH WESTERN OF SARAWAK2017 •
Pharmacognosy Journal
Botany, uses, phytochemistry and pharmacology of Vallaris: A short review2013 •
Asian Journal of Biodiversity
Arthropod Community Structure During the Early Stages of Leaf Litter Decomposition2013 •
2018 •
Plants
Four New Species of Nepenthes L. (Nepenthaceae) from the Central Mountains of Mindanao, Philippines2014 •
The International Journal of Plant Reproductive Biology
Pollination Biology of Larsenianthus careyanus (Benth.) W.J. Kress & Mood. (Zingiberaceae).pdf2019 •
2012 •
Plant Systematics and Evolution
Molecular phylogeny and taxonomic revision of the Philippine endemic Villaria Rolfe (RubiaceaeBiodiversitas
A new record of Etlingera megalocheilos (Griff.) A.D. Poulsen (Zingiberaceae) in Sulawesi, Indonesia2018 •
2013 •
2001 •
Malayan Nature Journal
Exploration, vegetation and a survey of plant life of the Gunung Tera area, Kelantan, Peninsular Malaysia2009 •
2019 •