The Canary Islands – La Palma in Spring
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Proclaimed Plant Policy
Declared Plant Policy This policy relates to natural resources management under section 9(1)(d) of the Landscape South Australia Act 2019 (the Act), enabling co-ordinated implementation and promotion of sound management programs and practices for the use, development or protection of natural resources of the State. Specifically, this policy provides guidance on the use and management of natural resources relating to the prevention or control of impacts caused by pest species of plants that may have an adverse effect on the environment, primary production or the community, as per object s7(1)(f) of the Act. white weeping brooms (Retama raetam and Retama monosperma) The weeping white brooms are shrubs from the Mediterranean basin that are planted as ornamentals and encroach into native vegetation. Management Plan for White Weeping Brooms Outcome • Maintain the integrity of native vegetation by minimising invasion and impacts of white weeping broom, and preventing further spread. Objectives • Identification of the full extent of white weeping broom infestations in the active control areas. • High priority infestations of white weeping broom in the control areas controlled. • Increase awareness about the impacts of white weeping broom • No further spread of white weeping broom to currently uninfested areas. Best Practice Implementation • All regional landscape boards and Green Adelaide to enforce the prohibition on sale of white weeping broom. • Regional landscape boards in the active control areas to inspect, map and monitor infestations of white weeping broom in coastal and native vegetation. • Regional landscape boards in the active control areas to ensure high priority infestations on private or public land are controlled. -
Gradient Analysis of Exotic Species in Pinus Radiata Stands of Tenerife (Canary Islands) S
The Open Forest Science Journal, 2009, 2, 63-69 63 Open Access Gradient Analysis of Exotic Species in Pinus radiata Stands of Tenerife (Canary Islands) S. Fernández-Lugo and J.R. Arévalo* Departamento de Ecología, Facultad de Biología, Universidad de La Laguna, La Laguna 38206, Spain Abstract: Identifying the factors that influence the spread of exotic species is essential for evaluating the present and future extent of plant invasions and for the development of eradication programs. We randomly established a network of 250 plots on an exotic Pinus radiata D. Don plantation on Tenerife Island in order to determine if roads and urban centers are favouring the spread of exotic plant species into the forest. We identified four distinct vegetation groups in the P. radiata stands: advanced laurel forest (ALF), undeveloped laurel forest (ULF), ruderal (RU), and Canarian pine stand (CPS). The groups farthest from roads and urban nuclei (ALF and CPS) have the best conserved vegetation, characterizing by the main species of the potential vegetation of the area and almost no exotic and ruderal species. On the other hand, the groups nearest to human infrastructures (ULF and RU) are characterized by species from potential vegetation’s substitution stages and a higher proportion of exotic and ruderal species. The results indicate distance to roads and urban areas are disturbance factors favouring the presence of exotic and ruderal species into the P. radiata plantation. We propose the eradication of some dangerous exotic species, monitoring of the study area in order to detect any intrusion of alien species in the best conserved areas and implementation of management activities to reduce the perturbation of the ULF and RU areas. -
AND ALGERIAN IVY (Hedera Canariensis) in CALIFORNIA
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by UNL | Libraries University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Proceedings of the 6th Vertebrate Pest Vertebrate Pest Conference Proceedings Conference (1974) collection March 1974 THE ASSOCIATION OF THE ROOF RAT (Rattus rattus) WITH THE HIMALAYAN BLACKBERRY (Rubus discolor) AND ALGERIAN IVY (Hedera canariensis) IN CALIFORNIA Val J. Dutson California Health Department, Berkeley, CA Follow this and additional works at: https://digitalcommons.unl.edu/vpc6 Part of the Environmental Health and Protection Commons Dutson, Val J., "THE ASSOCIATION OF THE ROOF RAT (Rattus rattus) WITH THE HIMALAYAN BLACKBERRY (Rubus discolor) AND ALGERIAN IVY (Hedera canariensis) IN CALIFORNIA" (1974). Proceedings of the 6th Vertebrate Pest Conference (1974). 10. https://digitalcommons.unl.edu/vpc6/10 This Article is brought to you for free and open access by the Vertebrate Pest Conference Proceedings collection at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Proceedings of the 6th Vertebrate Pest Conference (1974) by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. THE ASSOCIATION OF THE ROOF RAT (Rattus rattus) WITH THE HIMALAYAN BLACKBERRY (Rubus discolor) AND ALGERIAN IVY (Hedera canariensis) IN CALIFORNIA VAL J. DUTSON, Public Health Biologist, Vector Control Section, California Health Department, Berkeley, California ABSTRACT: The roof rat (Rattus rattus) u t i l i z e s Algerian ivy and the Himalayan blackberry for food and cover, often l iving independent of man. Algerian ivy is the most popular ornamental and ground cover plant in California and is used extensively for landscaping, particularly in southern California. -
Conceptual Design Documentation
Appendix A: Conceptual Design Documentation APPENDIX A Conceptual Design Documentation June 2019 A-1 APPENDIX A: CONCEPTUAL DESIGN DOCUMENTATION The environmental analyses in the NEPA and CEQA documents for the proposed improvements at Oceano County Airport (the Airport) are based on conceptual designs prepared to provide a realistic basis for assessing their environmental consequences. 1. Widen runway from 50 to 60 feet 2. Widen Taxiways A, A-1, A-2, A-3, and A-4 from 20 to 25 feet 3. Relocate segmented circle and wind cone 4. Installation of taxiway edge lighting 5. Installation of hold position signage 6. Installation of a new electrical vault and connections 7. Installation of a pollution control facility (wash rack) CIVIL ENGINEERING CALCULATIONS The purpose of this conceptual design effort is to identify the amount of impervious surface, grading (cut and fill) and drainage implications of the projects identified above. The conceptual design calculations detailed in the following figures indicate that Projects 1 and 2, widening the runways and taxiways would increase the total amount of impervious surface on the Airport by 32,016 square feet, or 0.73 acres; a 6.6 percent increase in the Airport’s impervious surface area. Drainage patterns would remain the same as both the runway and taxiways would continue to sheet flow from their centerlines to the edge of pavement and then into open, grassed areas. The existing drainage system is able to accommodate the modest increase in stormwater runoff that would occur, particularly as soil conditions on the Airport are conducive to infiltration. Figure A-1 shows the locations of the seven projects incorporated in the Proposed Action. -
Informação Base De Biodiversidade Da Ilha Do Corvo E Do Ilhéu De Vila Franca Do Campo
LIFE+ Safe Islands for Seabirds Relatório Acção A1 - Informação Base de Biodiversidade da Ilha do Corvo e do Ilhéu de Vila Franca do Campo LIFE07 NAT/P/000649 Corvo, Dezembro 2009 O P r o j e c O O projecto LIFE+ Safe Islands for Seabirds é uma parceria da SPEA com a Secretaria Regional do Ambiente e do Mar (SRAM), a Câmara Municipal do Corvo e a Royal Society for Protection of Birds, contando ainda com o apoio das seguintes entidades enquanto observadoras na sua Comissão Executiva: Direcção Regional dos Recursos Florestais (DRRF) e Câmara Municipal de Vila Franca do Campo. Trabalhar para o estudo e conservação das aves e seus habitats, promovendo um desenvolvimento que garanta a viabilidade do património natural para usufruto das gerações futuras. A SPEA – Sociedade Portuguesa para o Estudo das Aves é uma organização não governamental de ambiente que trabalha para a conservação das aves e dos seus habitats em Portugal. Como associação sem fins lucrativos, depende do apoio dos sócios e de diversas entidades para concretizar as suas acções. Faz parte de uma rede mundial de organizações de ambiente, a BirdLife International, que actua em mais de 100 países e tem como objectivo a preservação da diversidade biológica através da conservação das aves, dos seus habitats e da promoção do uso sustentável dos recursos naturais. LIFE+ Safe Islands for Seabirds. Relatório Inicial Sociedade Portuguesa para o Estudo das Aves, 2009 Direcção Nacional: Ricardo Azul Tomé, Maria Ana Peixe, Pedro Guerreiro, Ana Leal Martins, João Jara, Paulo Travassos, Pedro Coelho, Miguel Capelo, Paulo Simões Coelho, Teresa Catry Direcção Executiva: Luís Costa Coordenação do projecto: Pedro Luís Geraldes Equipa técnica: Ana Catarina Henriques, Carlos Silva, Joana Domingues, Nuno Oliveira, Sandra Hervías, Nuno Domingos, Susana Costa e Vanessa Oliveira. -
Checklists of Crustacea Decapoda from the Canary and Cape Verde Islands, with an Assessment of Macaronesian and Cape Verde Biogeographic Marine Ecoregions
Zootaxa 4413 (3): 401–448 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2018 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4413.3.1 http://zoobank.org/urn:lsid:zoobank.org:pub:2DF9255A-7C42-42DA-9F48-2BAA6DCEED7E Checklists of Crustacea Decapoda from the Canary and Cape Verde Islands, with an assessment of Macaronesian and Cape Verde biogeographic marine ecoregions JOSÉ A. GONZÁLEZ University of Las Palmas de Gran Canaria, i-UNAT, Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain. E-mail: [email protected]. ORCID iD: 0000-0001-8584-6731. Abstract The complete list of Canarian marine decapods (last update by González & Quiles 2003, popular book) currently com- prises 374 species/subspecies, grouped in 198 genera and 82 families; whereas the Cape Verdean marine decapods (now fully listed for the first time) are represented by 343 species/subspecies with 201 genera and 80 families. Due to changing environmental conditions, in the last decades many subtropical/tropical taxa have reached the coasts of the Canary Islands. Comparing the carcinofaunal composition and their biogeographic components between the Canary and Cape Verde ar- chipelagos would aid in: validating the appropriateness in separating both archipelagos into different ecoregions (Spalding et al. 2007), and understanding faunal movements between areas of benthic habitat. The consistency of both ecoregions is here compared and validated by assembling their decapod crustacean checklists, analysing their taxa composition, gath- ering their bathymetric data, and comparing their biogeographic patterns. Four main evidences (i.e. different taxa; diver- gent taxa composition; different composition of biogeographic patterns; different endemicity rates) support that separation, especially in coastal benthic decapods; and these parametres combined would be used as a valuable tool at comparing biotas from oceanic archipelagos. -
Rainfall and Flooding in Coastal Tourist Areas of the Canary Islands (Spain)
atmosphere Article Rainfall and Flooding in Coastal Tourist Areas of the Canary Islands (Spain) Abel López Díez 1 , Pablo Máyer Suárez 2,*, Jaime Díaz Pacheco 1 and Pedro Dorta Antequera 1 1 University of La Laguna (ULL), 38320 San Cristóbal de La Laguna, Tenerife, Spain; [email protected] (A.L.D.); [email protected] (J.D.P.); [email protected] (P.D.A.) 2 Physical Geography and Environment Group, Institute of Oceanography and Global Change (IOCAG), University of Las Palmas de Gran Canaria (ULPGC), 35214 Telde, Gran Canaria, Spain * Correspondence: [email protected] Received: 19 November 2019; Accepted: 11 December 2019; Published: 13 December 2019 Abstract: Coastal spaces exploited for tourism tend to be developed rapidly and with a desire to maximise profit, leading to diverse environmental problems, including flooding. As the origin of flood events is usually associated with intense precipitation episodes, this study considers the general rainfall characteristics of tourist resorts in two islands of the Canary Archipelago (Spain). Days of intense rainfall were determined using the 99th percentile (99p) of 8 daily precipitation data series. In addition, the weather types that generated these episodes were identified, the best-fitting distribution functions were determined to allow calculation of probable maximum daily precipitation for different return periods, and the territorial and economic consequences of flood events were analysed. The results show highly irregular rainfall, with 99p values ranging 50–80 mm. The weather types associated with 49 days of flooding events were predominantly cyclonic and hybrid cyclonic. The Log Pearson III distribution function best fitted the data series, with a strong likelihood in a 100-year return period of rainfall exceeding 100 mm in a 24 h period. -
Morphological Nature of Floral Cup in Lauraceae
l~Yoc. Indian Acad. Sci., Vol. 88 B, Part iI, Number 4, July 1979, pp. 277-281, @ printed in India. Morphological nature of floral cup in Lauraceae S PAL School of Plant Morphology, Meerut College, Meerut 250 001 MS received 19 June 1978 Abstract. On the basis of anatomical criteria the floral cup of Lauraceae can be regarded as appendicular, as the traces entering into the floral cup are morphologi- cally compound, differentiated into tepal and stamen traces at higher levels. The ontogenetic studies also support this contention. The term Perigynous hypanthium is retained for the floral cup of Lauraceae as it is formed as a result of intercalary growth occurring underneath the region of perianth and androecium. Keywords. Lauraceae; floral cup; morphological nature; appendicular; peri- gynous hypanthium. 1. Introduction The family Lauraceae has received comparatively little attention from earlier workers because of difficulty in procuring the material. So far very little work has been done on the floral anatomy of this family (Reece 1939 ; Sastri 1952 ; Pal 1974). There has been considerable difference of opinion regarding the nature of floral cup in angiosperms. The present work was initiated to study the morphological nature of the floral cup. 2. Materials and methods The present investigation embodies the results of observations on 21 species of the Lauraceae. The material of Machilus duthiei King ex Hook.f., M. odoratissima Nees, Persea gratissima Gaertn.f., Phoebe cooperiana Kanjilal and Das, P. goal- parensis Hutch., P. hainesiana Brandis, Alseodaphne keenanii Gamble, A. owdeni Parker, Cinnamomum camphora Nees and Eberm, C. cecidodaphne Meissn., C. tamala Nees and Eberm, C. -
The Laurel Or Bay Forests of the Canary Islands
California Avocado Society 1989 Yearbook 73:145-147 The Laurel or Bay Forests of the Canary Islands C.A. Schroeder Department of Biology, University of California, Los Angeles The Canary Islands, located about 800 miles southwest of the Strait of Gibraltar, are operated under the government of Spain. There are five islands which extend from 15 °W to 18 °W longitude and between 29° and 28° North latitude. The climate is Mediterranean. The two eastern islands, Fuerteventura and Lanzarote, are affected by the Sahara Desert of the mainland; hence they are relatively barren and very arid. The northeast trade winds bring moisture from the sea to the western islands of Hierro, Gomera, La Palma, Tenerife, and Gran Canaria. The southern ends of these islands are in rain shadows, hence are dry, while the northern parts support a more luxuriant vegetation. The Canary Islands were prominent in the explorations of Christopher Columbus, who stopped at Gomera to outfit and supply his fleet prior to sailing "off the map" to the New World in 1492. Return voyages by Columbus and other early explorers were via the Canary Islands, hence many plants from the New World were first established at these points in the Old World. It is suspected that possibly some of the oldest potato germplasm still exists in these islands. Man exploited the islands by growing sugar cane, and later Mesembryanthemum crystallinum for the extraction of soda, cochineal cactus, tomatoes, potatoes, and finally bananas. The banana industry is slowly giving way to floral crops such as strelitzia, carnations, chrysanthemums, and several new exotic fruits such as avocado, mango, papaya, and carambola. -
Plethora of Plants - Collections of the Botanical Garden, Faculty of Science, University of Zagreb (2): Glasshouse Succulents
NAT. CROAT. VOL. 27 No 2 407-420* ZAGREB December 31, 2018 professional paper/stručni članak – museum collections/muzejske zbirke DOI 10.20302/NC.2018.27.28 PLETHORA OF PLANTS - COLLECTIONS OF THE BOTANICAL GARDEN, FACULTY OF SCIENCE, UNIVERSITY OF ZAGREB (2): GLASSHOUSE SUCCULENTS Dubravka Sandev, Darko Mihelj & Sanja Kovačić Botanical Garden, Department of Biology, Faculty of Science, University of Zagreb, Marulićev trg 9a, HR-10000 Zagreb, Croatia (e-mail: [email protected]) Sandev, D., Mihelj, D. & Kovačić, S.: Plethora of plants – collections of the Botanical Garden, Faculty of Science, University of Zagreb (2): Glasshouse succulents. Nat. Croat. Vol. 27, No. 2, 407- 420*, 2018, Zagreb. In this paper, the plant lists of glasshouse succulents grown in the Botanical Garden from 1895 to 2017 are studied. Synonymy, nomenclature and origin of plant material were sorted. The lists of species grown in the last 122 years are constructed in such a way as to show that throughout that period at least 1423 taxa of succulent plants from 254 genera and 17 families inhabited the Garden’s cold glass- house collection. Key words: Zagreb Botanical Garden, Faculty of Science, historic plant collections, succulent col- lection Sandev, D., Mihelj, D. & Kovačić, S.: Obilje bilja – zbirke Botaničkoga vrta Prirodoslovno- matematičkog fakulteta Sveučilišta u Zagrebu (2): Stakleničke mesnatice. Nat. Croat. Vol. 27, No. 2, 407-420*, 2018, Zagreb. U ovom članku sastavljeni su popisi stakleničkih mesnatica uzgajanih u Botaničkom vrtu zagrebačkog Prirodoslovno-matematičkog fakulteta između 1895. i 2017. Uređena je sinonimka i no- menklatura te istraženo podrijetlo biljnog materijala. Rezultati pokazuju kako je tijekom 122 godine kroz zbirku mesnatica hladnog staklenika prošlo najmanje 1423 svojti iz 254 rodova i 17 porodica. -
Persea, Lauraceae
Scientific article doi: http://dx.doi.org/10.5154/r.rchsh.2017.12.038 Phylogenetic analysis of some members of the subgenus Persea (Persea, Lauraceae) Análisis filogenético de algunos miembros del subgénero Persea (Persea, Lauraceae) María Edith Cruz-Maya1; Alejandro Facundo Barrientos-Priego1*; Lily Xochitl Zelaya-Molina2; José Luis Rodríguez-de la O1; Juan Carlos Reyes-Alemán3 1Universidad Autónoma Chapingo, Departamento de Fitotecnia. Carretera México-Texcoco km 38.5, Texcoco, Estado de México, C. P. 56230, MÉXICO. 2Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Centro Nacional de Recursos Genéticos. Av. Biodiversidad núm. 2498, col. Centro, Tepatitlán de Morelos, Jalisco, C. P. 47600, MÉXICO. 3Universidad Autónoma del Estado de México. Carretera Tenancingo-Villa Guerrero km 1.5, Tenancingo, Estado de México, C. P. 52400, MÉXICO. *Corresponding author: [email protected]. Abstract he avocado belongs to the genus Persea, which is one of the most controversial genera of the Lauraceae family, since the relationships within the subgenus Persea are not clear T and only recognized two species, Persea americana and Persea schiedeana. Its relationship with the subgenus Eriodaphne is also complex and there is a debate as to whether it is an independent genus. For this reason, the study aims to analyze the phylogenetic relationships within the genus Persea, with an emphasis on the subgenus Persea, using maximum parsimony and bayesian inference with the sequence of eight different fragments from nuclear, chloroplast and mitochondrial DNA. Sequences of the chloroplast ndhF, rbcL, matK, rpoC, trnH- psbA; mitochondria atp4 and cox3 and nuclear 18S rRNA were used. Fourteen fixed mutations were found in species of the subgenus Eriodaphne. -
Phylogeny and Historical Biogeography of Lauraceae
PHYLOGENY Andre'S. Chanderbali,2'3Henk van der AND HISTORICAL Werff,3 and Susanne S. Renner3 BIOGEOGRAPHY OF LAURACEAE: EVIDENCE FROM THE CHLOROPLAST AND NUCLEAR GENOMES1 ABSTRACT Phylogenetic relationships among 122 species of Lauraceae representing 44 of the 55 currentlyrecognized genera are inferredfrom sequence variation in the chloroplast and nuclear genomes. The trnL-trnF,trnT-trnL, psbA-trnH, and rpll6 regions of cpDNA, and the 5' end of 26S rDNA resolved major lineages, while the ITS/5.8S region of rDNA resolved a large terminal lade. The phylogenetic estimate is used to assess morphology-based views of relationships and, with a temporal dimension added, to reconstructthe biogeographic historyof the family.Results suggest Lauraceae radiated when trans-Tethyeanmigration was relatively easy, and basal lineages are established on either Gondwanan or Laurasian terrains by the Late Cretaceous. Most genera with Gondwanan histories place in Cryptocaryeae, but a small group of South American genera, the Chlorocardium-Mezilauruls lade, represent a separate Gondwanan lineage. Caryodaphnopsis and Neocinnamomum may be the only extant representatives of the ancient Lauraceae flora docu- mented in Mid- to Late Cretaceous Laurasian strata. Remaining genera place in a terminal Perseeae-Laureae lade that radiated in Early Eocene Laurasia. Therein, non-cupulate genera associate as the Persea group, and cupuliferous genera sort to Laureae of most classifications or Cinnamomeae sensu Kostermans. Laureae are Laurasian relicts in Asia. The Persea group