Living with Nature Content
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Dipterocarpaceae)
DNA Sequence-Based Identification and Molecular Phylogeny Within Subfamily Dipterocarpoideae (Dipterocarpaceae) Dissertation Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Ph.D.) at Forest Genetics and Forest Tree Breeding, Büsgen Institute Faculty of Forest Sciences and Forest Ecology Georg-August-Universität Göttingen By Essy Harnelly (Born in Banda Aceh, Indonesia) Göttingen, 2013 Supervisor : Prof. Dr. Reiner Finkeldey Referee : Prof. Dr. Reiner Finkeldey Co-referee : Prof. Dr. Holger Kreft Date of Disputation : 09.01.2013 2 To My Family 3 Acknowledgments First of all, I would like to express my deepest gratitude to Prof. Dr. Reiner Finkeldey for accepting me as his PhD student, for his support, helpful advice and guidance throughout my study. I am very grateful that he gave me this valuable chance to join his highly motivated international working group. I would like to thank Prof. Dr. Holger Kreft and Prof. Dr. Raphl Mitlöhner, who agreed to be my co-referee and member of examination team. I am grateful to Dr. Kathleen Prinz for her guidance, advice and support throughout my research as well as during the writing process. My deepest thankfulness goes to Dr. Sarah Seifert (in memoriam) for valuable discussion of my topic, summary translation and proof reading. I would also acknowledge Dr. Barbara Vornam for her guidance and numerous valuable discussions about my research topic. I would present my deep appreciation to Dr. Amarylis Vidalis, for her brilliant ideas to improve my understanding of my project. My sincere thanks are to Prof. Dr. Elizabeth Gillet for various enlightening discussions not only about the statistical matter, but also my health issues. -
Nutrient Limitation of Eco-Physiological Processes in Tropical Trees
UC Riverside UC Riverside Previously Published Works Title Nutrient limitation of eco-physiological processes in tropical trees Permalink https://escholarship.org/uc/item/5nr1d4f5 Journal Trees (Berlin, Germany : West), 29(5) ISSN 0931-1890 Author Santiago, Louis S Publication Date 2015-10-01 DOI 10.1007/s00468-015-1260-x Peer reviewed eScholarship.org Powered by the California Digital Library University of California Trees (2015) 29:1291–1300 DOI 10.1007/s00468-015-1260-x REVIEW Nutrient limitation of eco-physiological processes in tropical trees Louis S. Santiago1,2 Received: 20 February 2015 / Revised: 9 July 2015 / Accepted: 13 July 2015 / Published online: 21 July 2015 Ó Springer-Verlag Berlin Heidelberg 2015 Abstract Keywords Climate change Á Fertilization Á Hydraulic Key Message Tropical forests play a disproportion- conductivity Á Photosynthesis Á Plant-soil interactions Á ately large role in the global climate system, yet the Tropical tree seedlings extent to which nutrients limit the potential for tropical trees to increase carbon gain as atmospheric carbon dioxide rises is unknown. Introduction Abstract This review focuses on what is known about tropical tree responses to experimental nutrient addition Tropical forests harbor the greatest biodiversity, produc- and how such information is critical for developing a more tivity and terrestrial carbon stocks of any biome and thus complete picture of the ability of tropical forest to respond play a disproportionately large role in the global climate to a changing world. Most of our knowledge of nutrient system (Beer et al. 2010; Saatchi et al. 2011). Thus, trop- limitation of eco-physiological processes in tropical trees is ical forest responses to environmental change and subse- derived from stand-scale nutrient addition experiments, in quent feedbacks to the global climate system are likely to which physiological or growth responses signify limitation be large. -
TAXON:Melochia Umbellata
TAXON: Melochia umbellata SCORE: 9.0 RATING: High Risk (Houtt.) Stapf Taxon: Melochia umbellata (Houtt.) Stapf Family: Malvaceae Common Name(s): hierba del soldado Synonym(s): Melochia indica Kurz melochia Visenia indica C. C. Gmelin tangkal bintenoo Visenia umbellata Houtt. Assessor: Chuck Chimera Status: Assessor Approved End Date: 23 Oct 2019 WRA Score: 9.0 Designation: H(Hawai'i) Rating: High Risk Keywords: Tropical Tree, Pioneer, Naturalized, Thicket-Forming, Wind-Dispersed Qsn # Question Answer Option Answer 101 Is the species highly domesticated? y=-3, n=0 n 102 Has the species become naturalized where grown? 103 Does the species have weedy races? Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet (0-low; 1-intermediate; 2-high) (See Appendix 2) High tropical" for "tropical or subtropical" 202 Quality of climate match data (0-low; 1-intermediate; 2-high) (See Appendix 2) High 203 Broad climate suitability (environmental versatility) y=1, n=0 y Native or naturalized in regions with tropical or 204 y=1, n=0 y subtropical climates Does the species have a history of repeated introductions 205 y=-2, ?=-1, n=0 n outside its natural range? 301 Naturalized beyond native range y = 1*multiplier (see Appendix 2), n= question 205 y 302 Garden/amenity/disturbance weed n=0, y = 1*multiplier (see Appendix 2) y 303 Agricultural/forestry/horticultural weed 304 Environmental weed 305 Congeneric weed n=0, y = 1*multiplier (see Appendix 2) y 401 Produces spines, thorns or burrs y=1, -
Taxanomic Composition and Conservation Status of Plants in Imbak Canyon, Sabah, Malaysia
Journal of Tropical Biology and Conservation 16: 79–100, 2019 ISSN 1823-3902 E-ISSN 2550-1909 Short Notes Taxanomic Composition and Conservation Status of Plants in Imbak Canyon, Sabah, Malaysia Elizabeth Pesiu1*, Reuben Nilus2, John Sugau2, Mohd. Aminur Faiz Suis2, Petrus Butin2, Postar Miun2, Lawrence Tingkoi2, Jabanus Miun2, Markus Gubilil2, Hardy Mangkawasa3, Richard Majapun2, Mohd Tajuddin Abdullah1,4 1Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu 2Forest Research Centre, Sabah Forestry Department, Sandakan, Sabah, Malaysia 3 Maliau Basin Conservation Area, Yayasan Sabah 4Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Terengganu *Corresponding authors: [email protected] Abstract A study of plant diversity and their conservation status was conducted in Batu Timbang, Imbak Canyon Conservation Area (ICCA), Sabah. The study aimed to document plant diversity and to identify interesting, endemic, rare and threatened plant species which were considered high conservation value species. A total of 413 species from 82 families were recorded from the study area of which 93 taxa were endemic to Borneo, including 10 endemic to Sabah. These high conservation value species are key conservation targets for any forested area such as ICCA. Proper knowledge of plant diversity and their conservation status is vital for the formulation of a forest management plan for the Batu Timbang area. Keywords: Vascular plant, floral diversity, endemic, endangered, Borneo Introduction The earth as it is today has a lot of important yet beneficial natural resources such as tropical forests. Tropical forests are one of the world’s richest ecosystems, providing a wide range of important natural resources comprising vital biotic and abiotic components (Darus, 1982). -
Nazrin Full Phd Thesis (150246576
Maintenance and conservation of Dipterocarp diversity in tropical forests _______________________________________________ Mohammad Nazrin B Abdul Malik A thesis submitted in partial fulfilment of the degree of Doctor of Philosophy Faculty of Science Department of Animal and Plant Sciences November 2019 1 i Thesis abstract Many theories and hypotheses have been developed to explain the maintenance of diversity in plant communities, particularly in hyperdiverse tropical forests. Maintenance of the composition and diversity of tropical forests is vital, especially species of high commercial value. I focus on the high value dipterocarp timber species of Malaysia and Borneo as these have been extensive logged owing to increased demands from global timber trade. In this thesis, I explore the drivers of diversity of this group, as well as the determinants of global abundance, conservation and timber value. The most widely supported hypothesis for explaining tropical diversity is the Janzen Connell hypothesis. I experimentally tested the key elements of this, namely density and distance dependence, in two dipterocarp species. The results showed that different species exhibited different density and distance dependence effects. To further test the strength of this hypothesis, I conducted a meta-analysis combining multiple studies across tropical and temperate study sites, and with many species tested. It revealed significant support for the Janzen- Connell predictions in terms of distance and density dependence. Using a phylogenetic comparative approach, I highlight how environmental adaptation affects dipterocarp distribution, and the relationships of plant traits with ecological factors and conservation status. This analysis showed that environmental and ecological factors are related to plant traits and highlights the need for dipterocarp conservation priorities. -
Nesting and Nest Trees of Stingless Bees (Apidae: Meliponini) in Lowland Dipterocarp Forests in Sabah, Malaysia, with Implicatio
Forest Ecology and Management 172 (2003) 301±313 Nesting and nest trees of stingless bees (Apidae: Meliponini) in lowland dipterocarp forests in Sabah, Malaysia, with implications for forest management Thomas Eltza,*, Carsten A. BruÈhla, Zamrie Imiyabirb, K. Eduard Linsenmaira aDepartment of Animal Ecology and Tropical Biology, Theodor-Boveri-Institute for Biosciences, Am Hubland, D-97074 WuÈrzburg, Germany bSabah Forestry Department, Forest Research Centre, P.O. Box 1407, 90715 Sandakan, Sabah, Malaysia Received 9 May 2001; received in revised form 19 October 2001; accepted 19 October 2001 Abstract Nesting habits of highly social stingless bees (Meliponini) were studied in lowland dipterocarp forests in Sabah, Borneo. A total of 275 nests of 12 species of bees were located. All nests were closely associated with living (91.5%) or dead (8.5%) trees, either within pre-formed cavities in the trunk (cavity nests) or situated in or under the tree base (base nests). Species of bees differed in nesting habit. The majority of species (seven) were cavity nesters, but the majority of nests (81%) were base nests. Nests were often aggregated (mean of 1.94 nests/nest tree), with up to eight colonies and three species in a single tree. Nest trees were mostly large to very large (86.1% above 60 cm dbh) commercial timber trees; 47.3% of nest trees were dipterocarps. According to visual inspection nest trees were of signi®cantly lower expected timber quality then randomly chosen control trees. Taking into account information on tree species, size and expected timber quality, we estimated that 34.0 or 42.6% of nest trees were potential harvest trees, depending on harvesting regulations (reduced impact logging (RIL) versus conventional). -
Obdiplostemony: the Occurrence of a Transitional Stage Linking Robust Flower Configurations
Annals of Botany 117: 709–724, 2016 doi:10.1093/aob/mcw017, available online at www.aob.oxfordjournals.org VIEWPOINT: PART OF A SPECIAL ISSUE ON DEVELOPMENTAL ROBUSTNESS AND SPECIES DIVERSITY Obdiplostemony: the occurrence of a transitional stage linking robust flower configurations Louis Ronse De Craene1* and Kester Bull-Herenu~ 2,3,4 1Royal Botanic Garden Edinburgh, Edinburgh, UK, 2Departamento de Ecologıa, Pontificia Universidad Catolica de Chile, 3 4 Santiago, Chile, Escuela de Pedagogıa en Biologıa y Ciencias, Universidad Central de Chile and Fundacion Flores, Ministro Downloaded from https://academic.oup.com/aob/article/117/5/709/1742492 by guest on 24 December 2020 Carvajal 30, Santiago, Chile * For correspondence. E-mail [email protected] Received: 17 July 2015 Returned for revision: 1 September 2015 Accepted: 23 December 2015 Published electronically: 24 March 2016 Background and Aims Obdiplostemony has long been a controversial condition as it diverges from diploste- mony found among most core eudicot orders by the more external insertion of the alternisepalous stamens. In this paper we review the definition and occurrence of obdiplostemony, and analyse how the condition has impacted on floral diversification and species evolution. Key Results Obdiplostemony represents an amalgamation of at least five different floral developmental pathways, all of them leading to the external positioning of the alternisepalous stamen whorl within a two-whorled androe- cium. In secondary obdiplostemony the antesepalous stamens arise before the alternisepalous stamens. The position of alternisepalous stamens at maturity is more external due to subtle shifts of stamens linked to a weakening of the alternisepalous sector including stamen and petal (type I), alternisepalous stamens arising de facto externally of antesepalous stamens (type II) or alternisepalous stamens shifting outside due to the sterilization of antesepalous sta- mens (type III: Sapotaceae). -
Flora of Singapore Precursors, 9: the Identities of Two Unplaced Taxa Based on Types from Singapore
Gardens' Bulletin Singapore 70 (2): 295–299. 2018 295 doi: 10.26492/gbs70(2).2018-06 Flora of Singapore precursors, 9: The identities of two unplaced taxa based on types from Singapore I.M. Turner1, 2, M. Rodda2, K.M. Wong2 & D.J. Middleton2 1Singapore Botanical Liaison Officer, Royal Botanic Gardens Kew, Richmond, Surrey TW9 3AE, U.K. [email protected] 2Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, 259569, Singapore. ABSTRACT. Work on the Gentianales for the Flora of Singapore has clarified the identities of two names based on types collected in Singapore that have long been considered of uncertain application. Dischidia wallichii Wight is shown to be a synonym of Micrechites serpyllifolius (Blume) Kosterm. (Apocynaceae) and Saprosma ridleyi King & Gamble is a synonym of Psychotria maingayi Hook.f. (Rubiaceae). A lectotype is designated for Dischidia wallichii. Keywords. Apocynaceae, Dischidia wallichii, Micrechites serpyllifolius, Psychotria maingayi, Rubiaceae, Saprosma ridleyi, synonymy Introduction The Gentianales have recently been the focus of intensive research in preparation for the accounts of the included families for the Flora of Singapore (Rodda & Ang, 2012; Rodda et al., 2015, 2016; Middleton et al., 2018; Rodda & Lai, 2018; Seah & Wong, 2018; Turner, 2018; Turner & Kumar, 2018; Wong & Mahyuni, 2018; Wong et al, in press; Wong & Lua, 2018). This involved a closer look at two taxa described from specimens collected in Singapore that have long eluded satisfactory conclusions as to their identities, Dischidia wallichii Wight (Apocynaceae) and Saprosma ridleyi King & Gamble (Rubiaceae). Through a collaboration among the authors of this paper, who have wide expertise across these families, we can now place these two names in synonymy of other taxa. -
Floribunda 5(8) 2018 322 the PSYDRAX DICOCCOS COMPLEX
Floribunda 5(8) 2018 322 THE PSYDRAX DICOCCOS COMPLEX (RUBIACEAE) IN MALESIA, WITH THREE NEW SPECIES Ridha Mahyuni1,2, Tatik Chikmawati1, Nunik Sri Ariyanti1 & Khoon Meng Wong3 1Plant Biology Graduate Program, Bogor Agricultural University; Department of Biology, Faculty of Mathe- matics and Natural Sciences, Bogor Agricultural University, Indonesia 2Herbarium Bogoriense, Botany Division, Research Center for Biology-LIPI, Cibinong Science Center, Jl. Raya Jakarta–Bogor km 46, Cibinong 16911, Bogor, Indonesia. E-mail: [email protected] (corresponding author) 3Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, Singapore 259569 Ridha Mahyuni, Tatik Chikmawati, Nunik Sri Ariyanti & Khoon Meng Wong. 2018. Psydrax dicoccos kom- pleks (Rubiaceae) di Malesia, dengan tiga jenis baru. Floribunda 5(8): 322–331. —. Psydrax dicoccos Gaertn., merupakan jenis tipe dari Psydrax Gaertn., hanya mempunyai dua sampel buah sebagai bahan ti- penya. Terbatasnya material tipe menghasilkan kesalahan yang menyebabkan jenis yang berbeda diberikan nama P. dicoccos. Sebanyak 140 lembar spesimen herbarium yang diidentifikasi sebagai P. dicoccos di ka- wasan Malesia, ditentukan sebagai takson yang berbeda dan ditunjukkan dengan tiga jenis baru yaitu Psy- drax elmerianus, P. koordersianus dan P. sumatranus. Diagnostik karakter masing-masing jenis disediakan. Kata Kunci: Malesia, jenis baru, Psydrax. Ridha Mahyuni, Tatik Chikmawati, Nunik Sri Ariyanti & Khoon Meng Wong. 2018. The Psydrax dicoccos Complex (Rubiaceae) in Malesia, with Three New Species. Floribunda 5(8): 322–331. — . Psydrax dico- ccos Gaertn., the type species of Psydrax Gaertn., is typified by a specimen consisting of two detached fruits. The limited type material has resulted in a number of distinct species being wrongly referred to that species. Approximately 140 herbarium specimens identified as P. -
Analyses of Plant Diversity in a Sacred Grove of Pudukkottai District, Tamil
© 2018 IJRAR December 2018, Volume 5, Issue 4 www.ijrar.org (E-ISSN 2348-1269, P- ISSN 2349-5138) Analyses of plant diversity in a sacred grove of Puddukottai District, Tamil Nadu, India Dhanasekar S1*, Muthukumar B2*, Soosairaj S3* 1. GUEST LECTURER, PG & RESEARCH DEPARTMENT OF BOTANY, ARIGNAR ANNA GOVT. ARTS COLLEGE, MUSIRI, TAMILNADU, INDIA. 2. ASSOCIATE PROFESSOR, PG & RESEARCH DEPARTMENT OF BOTANY, NATIONAL COLLEGE, TIRUCHIRAPPALLI, TAMILNADU, INDIA 3. ASSISTANT PROFESSOR,. PG & RESEARCH DEPARTMENT OF BOTANY, ST JOSEPH’S COLLEGE, TIRUCHIRAPPALLI, TAMILNADU, INDIA ABSTRACT Assessment on the plant diversity in Kanadukathaan sacred grove near Naratharmalai in the Pudukottai district of Tamil Nadu, India, was carried out during 2015 – 2016. In the study, a total of 113 plant species were recorded belonged to 100 genera distributed among 54 families, in which 2 families are vascular cryptogams (Pteridophyta) and 1 family was non – vascular cryptogams (Bryophyta) and all other families are Angiosperms. Fabaceae (10 species) is a dominant family followed by Rubiaceae (8 species), Euphorbiaceae (6 species) and 4 species each from Malvaceae and Poaceae. The diversity indices namely Shannon – Weiner index, Simpson index, evenness index, etc., were analysed. Among the total species, two species were in vulnerable condition in regard to red data book. KEY WORDS: Sacred groves, Cryptogams, Angiosperms, Diversity indices, RED data book INTRODUCTION this area is shrinking at the rate of 11.3 million hectares per year (FAO,1999). Classification is an essential process in our daily lives and a necessary tool for our survival. For example we Many parts of the globe are constantly losing need to know which plants, animals and fungi are useful and organisms through pollution, loss of natural habitats and are poisonous or dangerous (Kushwah and Kumar, 2000). -
Free Radical Scavenging Activity, Phenol and Flavonoid Contents of Various Solvent Extracts from the Psydrax Dicoccos (Gaertn)
International Journal of Applied Research 2017; 3(1): 394-402 ISSN Print: 2394-7500 ISSN Online: 2394-5869 Free radical scavenging activity, phenol and flavonoid Impact Factor: 5.2 IJAR 2017; 3(1): 394-402 contents of various solvent extracts from the Psydrax www.allresearchjournal.com Received: 24-11-2016 dicoccos (Gaertn) Accepted: 25-12-2016 D Umaiyambigai D Umaiyambigai, K Saravanakumar and G Adaikala Raj Department of Botany, Annamalai University, Annamalainagar, Tamil Nadu, Abstract India Aim: The present study was to determine the in vitro antioxidant activity of petroleum ether, chloroform, ethyl acetate and methanol extracts of Psydrax dicoccos (Wall. & Arn.) Swingle. K Saravanakumar Methods: The different extracts of P. dicoccos leaves were antioxidant potential by using 1,1- Botany Wing - DDE, diphenyl-2-picryl-hydrazyl (DPPH), 2, 2-Azino-bis-3-ethyl benzthiazoline-6-sulphonic acid (ABTS•+), Annamalai University, Hydrogen peroxide scavenging, Superoxide anions scavenging, Hydroxyl radical scavenging, Ferric Annamalainagar, Tamil Nadu, reducing antioxidant power, Total antioxidant activity (Phosphomolybdic acid) IC50 values were India calculated compare to standard antioxidant for L- ascorbic acid, (BHT) butylated hydroxytoluene and G Adaikala Raj gallic acid. Department of Botany, Results: The methanol extract showed the highest phenol and flavonoid contents were also Annamalai University, investigated. Among the different extracts methanol extract of Psydrax dicoccos had significantly Annamalainagar, Tamil Nadu, higher. The total phenol (5.05 ± 0.76) mg/ml gallic acid equivalent (GAE/g) and flavonoids (6.72 ± India 0.13) mg/ml quercetin equivalent (QE/g) were found to be higher in methanol extract of Psydrax dicoccos. Conclusion: The results of the study revealed that the methanol extract of P. -
Feruloyloctopamine from the Root Timber of Melochia Umbellata (Houtt.) Stapf Var
Journal of Physics: Conference Series PAPER • OPEN ACCESS (R)-N-trans- feruloyloctopamine from the root timber of Melochia umbellata (Houtt.) Stapf var. Visenia (Paliasa) To cite this article: S Nusan et al 2019 J. Phys.: Conf. Ser. 1341 032021 View the article online for updates and enhancements. This content was downloaded from IP address 114.125.219.221 on 20/11/2019 at 07:22 The 3rd International Conference On Science IOP Publishing Journal of Physics: Conference Series 1341 (2019) 032021 doi:10.1088/1742-6596/1341/3/032021 (R)-N-trans- feruloyloctopamine from the root timber of Melochia umbellata (Houtt.) Stapf var. Visenia (Paliasa) S Nusan1, N H Soekamto2, Y Maolana Syah3, Firdaus2 and E Hermawati3 1Department of Agriculture, Enrekang Regency, Jl. Jend Sudirman No. 22, Enrekang, Indonesia 2Department of Chemistry, Hasanuddin University, Jalan Perintis Kemerdekaan 10, Makassar, 90245, Indonesia 3Department of Chemistry, Bandung Institute of Technology, Jalan Ganeca 10, Bandung, Indonesia [email protected] Abstract. A phenolic amide namely (R)-N-trans-feruloyloctopamine has been isolated from chloroform fraction of the root timber Melochia umbellata (Houtt) Stapf var. Visenia (Paliasa). Isolation compound has been done by maceration, fractionation, and purification. The molecular structure was determined by IR spectroscopy, NMR 1D and 2D (1H-NMR, 13C-NMR, HSQC and HMBC). Isolate formed yellow paste (83.4 mg) with o melting point of 156 – 158 C. The λmaks data on the UV-Vis spectrum of 333.80 nm (3.795) -1 indicate compound has a long conjugated double bond. Data IR vmax cm for groups as follows : 3327 (-OH), 2933 (C-H aliphatic), 1653 (C=O amide), 1593 (olefin).