Extenzív Zöldtetők, És Azokon Alkalmazott Egyes Sedum Fajok Komplex Értékelése

Total Page:16

File Type:pdf, Size:1020Kb

Extenzív Zöldtetők, És Azokon Alkalmazott Egyes Sedum Fajok Komplex Értékelése DOKTORI ÉRTEKEZÉS Extenzív zöldtetők, és azokon alkalmazott egyes Sedum fajok komplex értékelése Készítette: Szőke Andrea Budapesti Corvinus Egyetem Kertészettudományi Kar Dísznövénytermesztési és Dendrológia Tanszék Budapest 2015 I A doktori iskola megnevezése: Kertészettudományi Doktori Iskola tudományága: Növénytermesztési és kertészeti tudományok vezetője: Tóth Magdolna, DSc egyetemi tanár Budapesti Corvinus Egyetem, Kertészettudományi Kar, Gyümölcstermő Növények Tanszék témavezetői: Gerzson László, PhD egyetemi docens Tájépítészeti Kar, Kert- és Szabadtér Tervezési Tanszék Forró Edit egyetemi docens, PhD egyetemi docens Budapesti Corvinus Egyetem, Kertészettudományi Kar, Talajtan és Vízgazdálkodás Tanszék A jelölt a Budapesti Corvinus Egyetem Doktori Szabályzatában előírt valamennyi feltételnek eleget tett, az értekezés műhelyvitájában elhangzott észrevételeket és javaslatokat az értekezés átdolgozásakor figyelembe vette, ezért az értekezés védési eljárásra bocsátható. Dr. Tóth Magdolna Dr. Gerzson László Dr. Forró Edit doktori iskola vezető témavezetők II A Budapesti Corvinus Egyetem Élettudományi Területi Doktori Tanácsának 2015. december 08-án kelt határozatában a nyilvános vita lefolytatására az alábbi bíráló Bizottságot jelölte ki: BÍRÁLÓ BIZOTTSÁG: Elnöke: Rimóczi Imre, DSc Tagjai: Höhn Mária, CSc Kohut Ildikó, PhD Dunkel Zoltán, PhD Jäger Katalin, PhD Szabóné Erdélyi Éva, PhD Opponensek: Lévai Péter, CSc Stefanovitsné Bányai Éva, DSc Titkár: Kohut Ildikó, PhD III Tartalomjegyzék 1. BEVEZETÉS ................................................................................................................................ 6 2. IRODALMI ÁTTEKINTÉS ........................................................................................................... 10 2.1. Zöldtetők kialakulása és történeti előzményei ........................................................................ 10 2.2. Növényi felületek szerepe a meteorológiai elemek változásában ........................................... 12 2.3. Zöldfelületek, zöldtetők szerepe a városklíma klímaparamétereinek megváltozásában ......... 17 2.4. Zöldtető típusok definiálása, jellemzése, összehasonlítása ..................................................... 30 2.5. Az extenzív zöldtetők.............................................................................................................. 33 2.5.1. Extenzív zöldtetők felépítése, rétegrendek és funkciók ............................................................. 33 2.5.2. Extenzív zöldtetők közegkeverékei, komponensei, rétegvastagságai ........................................ 36 2.5.3. Extenzív zöldtetők mennyiségi és minőségi vízparaméterei ...................................................... 39 2.5.4. Extenzív zöldtetőkön alkalmazott fajok feltételei és alkalmazása ............................................. 41 2.6. Sedum fajok jellemzése ........................................................................................................... 44 2.6.1. Sedum fajok botanikai jellemzése .............................................................................................. 44 2.6.1.1. Sedum fajok rendszertani helye ................................................................................................... 44 2.6.1.2. Sedum fajok általános morfológiai és szövettani jellemzése ....................................................... 45 2.6.2. Sedum fajok speciális anyagcsere folyamatai, élettani sajátosságok, kémiai anyagok .............. 46 2.6.3. Sedum fajok szaporodási és szaporítási lehetőségei .................................................................. 48 2.6.4. Őshonos és dísznövényként termesztett Sedum fajok ................................................................ 48 2.7. Zöldtetők létesítésének hazai helyzete .................................................................................... 51 3. CÉLKITŰZÉSEK ........................................................................................................................ 53 4. ANYAG ÉS MÓDSZER ................................................................................................................ 57 4.1. A kísérlet anyaga ..................................................................................................................... 57 4.1.1. Kísérleti terv, fajok, csurgalékvizek, közegek ........................................................................... 57 4.1.2. Kísérleti tető, felépítés, rétegrend, helyszín és időtartam........................................................... 59 4.1.3. Zöldtetőkataszter bemenő adatai ................................................................................................ 60 4.2. A vizsgálatok módszerei és eszközei ...................................................................................... 61 4.2.1. Növényfajokkal kapcsolatos minőségi és mennyiségi mérések ................................................. 61 4.2.1.1. Sedum fajok szövettani vizsgálatai .............................................................................................. 61 4.2.1.2. Sedum fajok klorofill-a, klorofill-b és összes karotinoid tartalom meghatározása ....................... 62 4.2.1.3. Sedum fajok antioxidáns anyagainak meghatározása .................................................................. 62 4.2.1.4. Sedum fajok növekedési ütemének és dinamikájánk meghatározása ........................................... 64 4.2.1.5. Az extenzív kísérleti tetőn megjelenő gyomfajok vizsgálata ....................................................... 64 4.2.2. Csurgalékvizek minőségi és mennyiségi jellemzése .................................................................. 65 4.2.2.1. Csurgalékvizek elemanalitikai vizsgálatai kapcsolat analitikai módszerekkel ............................. 65 4.2.2.2. Csurgalékvizek multikritériumos elemanalitikai rangsorolása és csoportosítása ......................... 66 4.2.2.3. Csurgalékvizek átfolyó mennyiségének és a csapadék visszatartás meghatározása ..................... 67 4.2.3. Közegkeverékekkel kapcsolatos minőségi és mennyiségi jellemzés ......................................... 68 4.2.3.1. Közegkeverékek általános fizikai vizsgálata ................................................................................ 68 4.2.3.2. Közegkeverékek specifikus fizikai vizsgálata .............................................................................. 68 4.2.3.3. Közegkeverékek általános kémiai vizsgálata ............................................................................... 70 4.2.3.4. Közegkeverékek tömörödésének vizsgálata ................................................................................. 70 4.2.4. Zöldtetőkataszter statisztikai vizsgálata ..................................................................................... 71 5. EREDMÉNYEK .......................................................................................................................... 72 5.1. A Sedum fajokkal kapcsolatos minőségi és mennyiségi mérések eredményei ....................... 72 5.1.1. Sedum fajok szövettani eredményei........................................................................................... 72 5.1.2. Sedum fajok klorofill-a, klorofill-b és összes karotinoid tartalmának eredményei .................... 77 5.1.3. Sedum fajok antioxidáns anyagainak eredményei ..................................................................... 79 5.1.4. Sedum fajok növekedési ütemének és dinamikájának eredményei ............................................ 81 5.1.5. Az extenzív kísérleti tetőn megjelenő gyomfajok vizsgálatának eredményei ............................ 86 5.2. A csurgalékvízzel kapcsolatos minőségi és mennyiségi mérések eredményei ....................... 90 IV 5.2.1. Csurgalékvizek elemanalitikai eredményei kapcsolat analitikai rendszerekkel ......................... 90 5.2.2. Csurgalékvizek elemanalitikai rangsorolása és csoportosítása .................................................. 95 5.2.3. Csurgalékvizek átfolyó mennyiségének és a csapadék visszatartás eredményei ....................... 98 5.3. A közegekkel kapcsolatos minőségi és mennyiségi mérések eredményei .............................. 99 5.3.1. Közegkeverékek általános fizikai vizsgálatának eredményei .................................................... 99 5.3.2. Közegkeverékek specifikus fizikai vizsgálata.......................................................................... 101 5.3.3. Közegkeverékek általános kémiai vizsgálatának eredményei .................................................. 102 5.3.4. Közegkeverékek tömörödésének üteme és jelleggörbéi .......................................................... 104 5.4. A zöldtetőkataszter statisztikai elemzésének eredményei ..................................................... 108 5.4.2. Zöldtetőkataszter intenzív zöldtető mennyiségének statisztikai modellezése .......................... 111 5.4.3. Zöldtetőkataszter összes zöldtető mennyiségének statisztikai elemzése .................................. 114 6. ÚJ TUDOMÁNYOS EREDMÉNYEK ............................................................................................ 118 7. KÖVETKEZTETÉSEK ÉS JAVASLATOK.................................................................................... 119 8. ÖSSZEFOGLALÁS.................................................................................................................... 124 9. SUMMARY .............................................................................................................................
Recommended publications
  • Effects of Dissolved Organic Matter from the Rhizosphere of the Hyperaccumulator
    Journal of Hazardous Materials 192 (2011) 1616–1622 Contents lists available at ScienceDirect Journal of Hazardous Materials j ournal homepage: www.elsevier.com/locate/jhazmat Effects of dissolved organic matter from the rhizosphere of the hyperaccumulator Sedum alfredii on sorption of zinc and cadmium by different soils a,b,∗ a a b Tingqiang Li , Zhenzhen Di , Xiaoe Yang , Donald L. Sparks a Ministry of Education, Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China b Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19717, USA a r t i c l e i n f o a b s t r a c t Article history: Pot experiments were conducted to investigate the changes of the dissolved organic matter (DOM) in the Received 12 February 2011 rhizosphere of hyperaccumulating ecotype (HE) and non-hyperaccumulating ecotype (NHE) of Sedum Received in revised form 6 June 2011 alfredii and its effects on Zn and Cd sorption by soils. After planted with HE, soil pH in the rhizosphere Accepted 29 June 2011 reduced by 0.5–0.6 units which is consistent with the increase of DOM. The hydrophilic fractions (51%) Available online 5 July 2011 in DOM from the rhizosphere of HE (HE-DOM) was much greater than NHE-DOM (35%). In the presence of HE-DOM, Zn and Cd sorption capacity decreased markedly in the following order: calcareous clay Keywords: loam > neutral clay loam > acidic silty clay. The sorption isotherms could be well described by the Fre- Dissolved organic matter 2 Cadmium undlich equation (R > 0.95), and the partition coefficient (K) in the presence of HE-DOM was decreased by 30.7–68.8% for Zn and 20.3–59.2% for Cd, as compared to NHE-DOM.
    [Show full text]
  • Seeking Criteria for Biodiversity Roofs Under Finnish Conditions
    SEEKING CRITERIA FOR BIODIVERSITY ROOFS UNDER FINNISH CONDITIONS WENFEI LIAO UNIVERSITY OF HELSINKI Department of Environmental Sciences Master’s Degree Programme in Environmental Ecology MASTER’S THESIS Octorber 2016 Tiedekunta/Osasto – Fakultet/Sektion – Faculty Laitos – Institution – Department Faculty of Biological and Environmental Sciences Department of Environmental Sciences Tekijä – Författare – Author Wenfei Liao Työn nimi – Arbetets titel – Title Seeking criteria for biodiversity roofs under Finnish conditions Oppiaine – Läroämne – Subject Social aspect of urban ecology Työn laji – Arbetets art – Level Aika – Datum – Month, year Sivumäärä – Sidoantal – Number of pages Master’s thesis October, 2016 76 + Appendices Tiivistelmä – Referat – Abstract Urbanisation has caused many environmental problems, such as air pollution and the loss of biodiversity. One way to mitigate these problems is to expand green spaces. Roofs, as the last frontier, could be made full use of. Green roofs have become a hot topic in recent years. In this study, I investigated the ability of green roofs to support urban biodiversity by conducting a literature review, and then I sought the criteria for biodiversity roofs under Finnish conditions by interviewing ecologists. My research questions in this study were 1) What kinds of habitats could be “ideal ecosystems” to be mimicked on biodiversity roofs in Finland; 2) which plant species could exist on roofs and whether they contribute to biodiversity; 3) what kinds of substrates support the biodiversity on roofs; 4) whether green roofs support faunal diversity and what faunal taxa could exist on roofs; 5) if and how roof structural characteristics influence roof biodiversity; 6) what kinds of management are practiced on biodiversity roofs; 7) what are people’s attitudes towards or perceptions of biodiversity roofs in general.
    [Show full text]
  • Improved Cadmium Uptake and Accumulation in the Hyperaccumulator Sedum Alfredii: the Impact of Citric Acid and Tartaric Acid*
    106 Lu et al. / J Zhejiang Univ-Sci B (Biomed & Biotechnol) 2013 14(2):106-114 Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology) ISSN 1673-1581 (Print); ISSN 1862-1783 (Online) www.zju.edu.cn/jzus; www.springerlink.com E-mail: [email protected] Improved cadmium uptake and accumulation in the hyperaccumulator Sedum alfredii: the impact of *# citric acid and tartaric acid Ling-li LU†, Sheng-ke TIAN, Xiao-e YANG†‡, Hong-yun PENG, Ting-qiang LI (Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China) †E-mail: [email protected]; [email protected] Received Aug. 4, 2012; Revision accepted Jan. 17, 2013; Crosschecked Jan. 18, 2013 Abstract: The elucidation of a natural strategy for metal hyperaccumulation enables the rational design of tech- nologies for the clean-up of metal-contaminated soils. Organic acid has been suggested to be involved in toxic metallic element tolerance, translocation, and accumulation in plants. The impact of exogenous organic acids on cadmium (Cd) uptake and translocation in the zinc (Zn)/Cd co-hyperaccumulator Sedum alfredii was investigated in the present study. By the addition of organic acids, short-term (2 h) root uptake of 109Cd increased significantly, and higher 109Cd contents in roots and shoots were noted 24 h after uptake, when compared to controls. About 85% of the 109Cd taken up was distributed to the shoots in plants with citric acid (CA) treatments, as compared with 75% within controls. No such effect was observed for tartaric acid (TA).
    [Show full text]
  • CRASSULACEAE 景天科 Jing Tian Ke Fu Kunjun (傅坤俊 Fu Kun-Tsun)1; Hideaki Ohba 2 Herbs, Subshrubs, Or Shrubs
    Flora of China 8: 202–268. 2001. CRASSULACEAE 景天科 jing tian ke Fu Kunjun (傅坤俊 Fu Kun-tsun)1; Hideaki Ohba 2 Herbs, subshrubs, or shrubs. Stems mostly fleshy. Leaves alternate, opposite, or verticillate, usually simple; stipules absent; leaf blade entire or slightly incised, rarely lobed or imparipinnate. Inflorescences terminal or axillary, cymose, corymbiform, spiculate, racemose, paniculate, or sometimes reduced to a solitary flower. Flowers usually bisexual, sometimes unisexual in Rhodiola (when plants dioecious or rarely gynodioecious), actinomorphic, (3 or)4– 6(–30)-merous. Sepals almost free or basally connate, persistent. Petals free or connate. Stamens as many as petals in 1 series or 2 × as many in 2 series. Nectar scales at or near base of carpels. Follicles sometimes fewer than sepals, free or basally connate, erect or spreading, membranous or leathery, 1- to many seeded. Seeds small; endosperm scanty or not developed. About 35 genera and over 1500 species: Africa, America, Asia, Europe; 13 genera (two endemic, one introduced) and 233 species (129 endemic, one introduced) in China. Some species of Crassulaceae are cultivated as ornamentals and/or used medicinally. Fu Shu-hsia & Fu Kun-tsun. 1984. Crassulaceae. In: Fu Shu-hsia & Fu Kun-tsun, eds., Fl. Reipubl. Popularis Sin. 34(1): 31–220. 1a. Stamens in 1 series, usually as many as petals; flowers always bisexual. 2a. Leaves always opposite, joined to form a basal sheath; inflorescences axillary, often shorter than subtending leaf; plants not developing enlarged rootstock ................................................................ 1. Tillaea 2b. Leaves alternate, occasionally opposite proximally; inflorescence terminal, often very large; plants sometimes developing enlarged, perennial rootstock.
    [Show full text]
  • Cellular Sequestration of Cadmium in the Hyperaccumulator Plant Species Sedum Alfredii1[C][W]
    Cellular Sequestration of Cadmium in the Hyperaccumulator Plant Species Sedum alfredii1[C][W] Shengke Tian, Lingli Lu, John Labavitch, Xiaoe Yang*, Zhenli He, Hening Hu, Ritimukta Sarangi, Matt Newville, Joel Commisso, and Patrick Brown Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China (S.T., L.L., X.Y.); Department of Plant Sciences, University of California, Davis, California 95616 (S.T., L.L., J.L., H.H., J.C., P.B.); Indian River Research and Education Center, Institute of Food and Agricultural Science, University of Florida, Fort Pierce, Florida 34945 (Z.H.); Stanford Synchrotron Radiation Lightsource, Stanford Linear Accelerator Center National Accelerator Laboratory, Menlo Park, California 94025 (R.S.); and GSECARS Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (M.N.) Spatial imaging of cadmium (Cd) in the hyperaccumulator Sedum alfredii was investigated in vivo by laser ablation inductively coupled plasma mass spectrometry and x-ray microfluorescence imaging. Preferential Cd accumulation in the pith and cortex was observed in stems of the Cd hyperaccumulating ecotype (HE), whereas Cd was restricted to the vascular bundles in its 2 contrasting nonhyperaccumulating ecotype. Cd concentrations of up to 15,000 mgg 1 were measured in the pith cells, which was many fold higher than the concentrations in the stem epidermis and vascular bundles in the HE plants. In the leaves of the HE, Cd was mainly localized to the mesophyll and vascular cells rather than the epidermis. The distribution pattern of Cd in both stems and leaves of the HE was very similar to calcium but not zinc, irrespective of Cd exposure levels.
    [Show full text]
  • Empirical and Numerical Approaches to Predicting the Thermal Performance of Green Roofs
    Empirical and numerical approaches to predicting the thermal performance of green roofs By Luke Gebert A thesis submitted to Saint Mary’s University, Halifax, Nova Scotia in partial fulfillment of the requirements for the Degree of Master of Science in Applied Science © Luke Gebert, 2015 Halifax, Nova Scotia Approved: Dr. Jeremy Lundholm Supervisor Approved: Dr. Denis O'Carroll Supervisory Committee Approved: Dr. Mirwais Qaderi Supervisory Committee Approved: Dr. Andrew Coutts External Examiner Date: 27th October, 2015 Abstract Empirical and numerical approaches to predicting the thermal performance of green roofs Luke Gebert Green roofs are increasingly recognised as a sustainable option for reducing building energy demand. However, given the large investment required for their construction, accurate modelling methods are needed to predict their economic benefits for building owners and maximize their effectiveness. The representation of vegetation in the green roof energy balance model literature is reviewed to identify their limitations. It is concluded that an overemphasis on single source models, minimal validation periods and limited input data is likely burdening the robustness and applicability of these models. Using data collected in Calgary, Halifax and London, this study then aims to develop empirical models to offer another approach for predicting the thermal performance of green roofs. Significant multiple linear regression models highlight the importance of net radiation, air-to-surface temperature difference and humidity in predicting the substrate heat flux, with the green roof in the driest climate; Calgary, being the most effective. Date: 27th October, 2015 Acknowledgements I am very thankful to my supervisor Dr. Jeremy Lundholm who always provided me with excellent recommendations and guidance during my Master’s Degree.
    [Show full text]
  • (Crassulaceae): a New Species from Anhui, China Ming-Lin Chen
    Bangladesh J. Bot. 46(3): 847-852, 2017 (September) SEDUM PELTATUM (CRASSULACEAE): A NEW SPECIES FROM ANHUI, CHINA * MING-LIN CHEN , XUE HAN, LI-FANG ZHANG AND XIN-HUA CAO Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Anhui Normal University, Wuhu, Anhui Province 241000, China (P. R.) Keywords: Crassulaceae, New species, Sedum peltatum, Sedum subtile Abstract Sedum peltatum M.L. Chen et X.H. Cao, belonging to the family Crassulaceae DC., is described and illustrated from China as a new species. It was collected from Nanwu canyon, Huangnikeng valley, Gaokeng valley and Qingshikeng valley in the Jiulong Mountains, China (P. R.). Morphological diagnostic characters of closely related species are also discussed. Introduction Sedum L. is the largest and most widespread genus of the family Crassulaceae DC., comprising ca. 420 species and constituting one third of the family diversity (Thiede and Eggli 2007). Consisting of annual and perennial herbs with succulent leaves and stems, this genus is primarily distributed in arid environments in temperate to subtropical regions, with highest diversity in the Himalayas, East Asia, Central America and the Mediterranean (Stephenson 1994, Thiede and Eggli 2007, Ito et al. 2017). Approximately 121 species (91 endemics) belonging to three sections are found in China; namely, sect. Filipes S.H. Fu, sect. Oreades K.T. Fu and sect. Sedum S.H. Fu (Fu and Ohba 2001). Sect. Sedum comprises more than 60 species and is distributed mainly in Asia, with 49 species (34 endemics) in China (Wu et al. 2013). Key to the species: 1. Leaf axils with viviparous buds or a sterile shoot 2 - Leaf axils without viviparous buds or a sterile shoot Sedum alfredii 2.
    [Show full text]
  • ICBEMP Analysis of Vascular Plants
    APPENDIX 1 Range Maps for Species of Concern APPENDIX 2 List of Species Conservation Reports APPENDIX 3 Rare Species Habitat Group Analysis APPENDIX 4 Rare Plant Communities APPENDIX 5 Plants of Cultural Importance APPENDIX 6 Research, Development, and Applications Database APPENDIX 7 Checklist of the Vascular Flora of the Interior Columbia River Basin 122 APPENDIX 1 Range Maps for Species of Conservation Concern These range maps were compiled from data from State Heritage Programs in Oregon, Washington, Idaho, Montana, Wyoming, Utah, and Nevada. This information represents what was known at the end of the 1994 field season. These maps may not represent the most recent information on distribution and range for these taxa but it does illustrate geographic distribution across the assessment area. For many of these species, this is the first time information has been compiled on this scale. For the continued viability of many of these taxa, it is imperative that we begin to manage for them across their range and across administrative boundaries. Of the 173 taxa analyzed, there are maps for 153 taxa. For those taxa that were not tracked by heritage programs, we were not able to generate range maps. (Antmnnrin aromatica) ( ,a-’(,. .e-~pi~] i----j \ T--- d-,/‘-- L-J?.,: . ey SAP?E%. %!?:,KnC,$ESS -,,-a-c--- --y-- I -&zII~ County Boundaries w1. ~~~~ State Boundaries <ii&-----\ \m;qw,er Columbia River Basin .---__ ,$ 4 i- +--pa ‘,,, ;[- ;-J-k, Assessment Area 1 /./ .*#a , --% C-p ,, , Suecies Locations ‘V 7 ‘\ I, !. / :L __---_- r--j -.---.- Columbia River Basin s-5: ts I, ,e: I’ 7 j ;\ ‘-3 “.
    [Show full text]
  • New Xenophytes from La Palma (Canary Islands, Spain), with Emphasis on Naturalized and (Potentially) Invasive Species – Part 3 R
    Collectanea Botanica 39: e002 enero-diciembre 2020 ISSN-L: 0010-0730 https://doi.org/10.3989/collectbot.2020.v39.002 New xenophytes from La Palma (Canary Islands, Spain), with emphasis on naturalized and (potentially) invasive species – Part 3 R. OTTO1 & F. VERLOOVE2 1 Lindenstraße, 2, D-96163 Gundelsheim, Germany 2 Botanic Garden Meise, Nieuwelaan, 38, B-1860 Meise, Belgium ORCID iD. R. OTTO: https://orcid.org/0000-0002-2498-7677, F. VERLOOVE: https://orcid.org/0000-0003-4144-2422 Author for correspondence: R. Otto ([email protected]) Editor: N. Ibáñez Received 22 February 2019; accepted 12 September 2019; published on line 14 April 2020 Abstract NEW XENOPHYTES FROM LA PALMA (CANARY ISLANDS, SPAIN), WITH EMPHASIS ON NATURALIZED AND (POTENTIALLY) INVASIVE SPE- CIES. PART 3.— Several months of field work in La Palma (western Canary Islands) yielded a number of interesting new records of non-native vascular plants. Alstroemeria aurea, A. ligtu, Anacyclus radiatus subsp. radiatus, Chenopodium album subsp. borbasii, Cotyledon orbiculata, Cucurbita ficifolia, Cynodon nlemfuensis, Datura stramonium subsp. tatula, Digitaria ciliaris var. rhachiseta, D. ischaemum, Diplotaxis tenuifolia, Egeria densa, Eugenia uniflora, Galinsoga quadri- radiata, Glebionis segetum, Kalanchoe laetivirens, Lemna minuta, Ligustrum lucidum, Lotus broussonetii, Oenothera fal- lax, Paspalum notatum, Passiflora caerulea, P. manicata × tarminiana, P. tarminiana, Pelargonium capitatum, Phaseolus lunatus, Portulaca trituberculata, Pyracantha angustifolia, Sedum mexicanum, Trifolium lappaceum, Urochloa mutica, U. subquadripara and Volutaria tubuliflora are naturalized or (potentially) invasive xenophytes or of special floristic in- terest, reported for the first time from either theCanary Islands or La Palma. Three additional, presumably ephemeral taxa are reported for the first time from the Canary Islands, whereas seven ephemeral taxa are new for La Palma.
    [Show full text]
  • Zinc Hyperaccumulation in Thlaspi Caerulescens, the Model Heavy Metal Accumulator Plant
    Zinc Hyperaccumulation in Thlaspi caerulescens By Victoria Mills BSc University of Birmingham MSc (Distinction) University of Nottingham Thesis submitted to the University of Nottingham for the degree of Doctor of Philosophy December 2009 Acknowledgements First and foremost I would like to thank my Mum, Ann, for supporting me both financially and emotionally throughout this course. She has always believed in me and stood by me in my decisions. Without this support and encouragement I would not have achieved everything that I have. I dedicate this thesis to her. Secondly I am grateful for the continued support and belief in me by my fiancé, Phil. Thank you for making sure I was fed during my writing up and for dealing with my stresses! Thanks to my other family members who have always been supportive of me and believed and encouraged me to keep writing, my Grandma Enid, Aunty Vivienne and Uncle Stephen, James and Richard and to my brother and sister, Edward and Emma. Also to my Dad who encouraged me in ways he will never know!! I would like to give a special thank you to my good friend Danny Rigby, my “knight in shining armour” for his expert computer document recovery skills! Thanks for being there to help me in my crisis!! At Nottingham I would like to thank my supervisors Dr M. Broadley and Dr K. Pyke for giving me the opportunity to do my doctoral research, and I would like to thank them for their supervision and guidance. I would like to thank Dr P. White (SCRI) and to Dr J.
    [Show full text]
  • Dissertation the Evolution Of
    DISSERTATION THE EVOLUTION OF SELENIUM HYPERACCUMULATION IN STANLEYA (BRASSICACEAE) Submitted by Jennifer JoCarole Cappa Department of Biology In partial fulfillment of the requirements For the Degree of Doctor of Philosophy Colorado State University Fort Collins, Colorado Summer 2014 Doctoral Committee: Advisor: Mark P. Simmons Co-Advisor: Elizabeth A.H. Pilon-Smits Amy L. Angert John McKay Copyright by Jennifer JoCarole Cappa 2014 All Rights Reserved ABSTRACT THE EVOLUTION OF SELENIUM HYPERACCUMULATION IN STANLEYA (BRASSICACEAE) Elemental hyperaccumulation is a fascinating trait found in at least 515 angiosperm species. Hyperaccumulation is the uptake of a metal/metalloid to concentrations 50-100x greater than surrounding vegetation. This equates to 0.01-1% dry weight (DW) depending on the element. Studies to date have identified 11 elements that are hyperaccumulated including arsenic, cadmium, cobalt, chromium, copper, lead, manganese, molybdenum, nickel, selenium (Se) and zinc. My research focuses on Se hyperaccumulation in the genus Stanleya (Brassicaceae). The threshold for Se hyperaccumulation is 1,000 mg Se kg-1 DW or 0.1% DW. Stanleya is a small genus comprised of seven species all endemic to the western United States. Stanleya pinnata is a Se hyperaccumulator and includes four varieties. I tested to what extent the species in Stanleya accumulate and tolerate Se both in the field and in a common-garden study. In the field collected samples only S. pinnata var. pinnata had Se levels >0.1% DW. Within S. pinnata var. pinnata, I found a geographic pattern related to Se hyperaccumulation where the highest accumulating populations are found on the eastern side of the Continental Divide.
    [Show full text]
  • Heavy Metal Phytoextraction by Sedum Alfredii Is Affected By
    Available online at www.sciencedirect.com JOURNAL OF ENVIRONMENTAL SCIENCES ISSN 1001-0742 CN 11-2629/X Journal of Environmental Sciences 2012, 24(3) 376–386 www.jesc.ac.cn Heavy metal phytoextraction by Sedum alfredii is affected by continual clipping and phosphorus fertilization amendment Huagang Huang1, Tingqiang Li1, D. K. Gupta1,2, Zhenli He3, Xiao-e Yang1,∗, Bingnan Ni1, Mao Li1 1. Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, Zhejiang University, Hangzhou 310029, China. E-mail: [email protected] 2. Departamento de Bioquimica, Biologia Cellular y Molicular de Plantas, Estacion Experimental del Zaidin, CSIC, C/ Profesor Albareda No 1, E-180080, Granada, Spain 3. University of Florida, Institute of Food and Agricultural Sciences, Indian River Research and Education Center, Fort Pierce, Florida 34945, USA Received 01 April 2011; revised 12 May 2011; accepted 30 May 2011 Abstract Improving the efficacy of phytoextraction is critical for its successful application in metal contaminated soils. Mineral nutrition affects plant growth and metal absorption and subsequently the accumulation of heavy metal through hyper-accumulator plants. This study assessed the effects of di-hydrogen phosphates (KH2PO4, Ca(H2PO4)2, NaH2PO4 and NH4H2PO4) application at three levels (22, 88 and 352 mg P/kg soil) on Sedum alfredii growth and metal uptake by three consecutive harvests on aged and Zn/Cd combined contaminated paddy soil. The addition of phosphates (P) significantly increased the amount of Zn taken up by S. alfredii due to increased shoot Zn concentration and dry matter yield (DMY) (P < 0.05). The highest phytoextraction of Zn and Cd was observed in KH2PO4 and NH4H2PO4 treatment at 352 mg P/kg soil.
    [Show full text]