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Selection: with tag taxonomy [116 articles] 

 

Do not publish

  
Science, Vol. 356, No. 6340. (25 May 2017), pp. 800-801, https://doi.org/10.1126/science.aan1362

Abstract

Biologists have long valued publishing detailed information on rare and endangered species. Until relatively recently, much of this information was accessible only through accessing specialized scientific journals in university libraries. However, much of these data have been transferred online with the advent of digital platforms and a rapid push to open-access publication. Information is increasingly also available online in public reports and wildlife atlases, and research published behind paywalls can often be found in the public domain. Increased data and information ...

 

Multispecies coalescent delimits structure, not species

  
Proceedings of the National Academy of Sciences, Vol. 114, No. 7. (14 February 2017), pp. 1607-1612, https://doi.org/10.1073/pnas.1607921114

Abstract

[Significance] Despite its widespread application to the species delimitation problem, our study demonstrates that what the multispecies coalescent actually delimits is structure. The current implementations of species delimitation under the multispecies coalescent do not provide any way for distinguishing between structure due to population-level processes and that due to species boundaries. The overinflation of species due to the misidentification of general genetic structure for species boundaries has profound implications for our understanding of the generation and dynamics of biodiversity, because any ecological ...

 

Keep it complex

  
Nature, Vol. 468, No. 7327. (23 December 2010), pp. 1029-1031, https://doi.org/10.1038/4681029a

Abstract

When knowledge is uncertain, experts should avoid pressures to simplify their advice. Render decision-makers accountable for decisions, says Andy Stirling. ...

 

Habitat, environment and niche: what are we modelling?

  
Oikos, Vol. 115, No. 1. (October 2006), pp. 186-191, https://doi.org/10.1111/j.2006.0030-1299.14908.x

Abstract

The terms 'habitat', 'environment' and 'niche' are used inconsistently, and with some confusion, within the ecological literature on species distribution and abundance modelling. Here I suggest interrelated working definitions of these terms whereby the concept of habitat remains associated with descriptive/correlative analyses of the environments of organisms, while the niche concept is reserved for mechanistic analyses. To model the niche mechanistically, it is necessary to understand the way an organism's morphology, physiology, and especially behaviour, determine the kinds of environment it ...

 

Meta-ecosystems: a theoretical framework for a spatial ecosystem ecology

  
Ecology Letters, Vol. 6, No. 8. (August 2003), pp. 673-679, https://doi.org/10.1046/j.1461-0248.2003.00483.x

Abstract

This contribution proposes the meta-ecosystem concept as a natural extension of the metapopulation and metacommunity concepts. A meta-ecosystem is defined as a set of ecosystems connected by spatial flows of energy, materials and organisms across ecosystem boundaries. This concept provides a powerful theoretical tool to understand the emergent properties that arise from spatial coupling of local ecosystems, such as global source–sink constraints, diversity–productivity patterns, stabilization of ecosystem processes and indirect interactions at landscape or regional scales. The meta-ecosystem perspective thereby has ...

 

The metacommunity concept: a framework for multi-scale community ecology

  
Ecology Letters, Vol. 7, No. 7. (04 June 2004), pp. 601-613, https://doi.org/10.1111/j.1461-0248.2004.00608.x

Abstract

The metacommunity concept is an important way to think about linkages between different spatial scales in ecology. Here we review current understanding about this concept. We first investigate issues related to its definition as a set of local communities that are linked by dispersal of multiple potentially interacting species. We then identify four paradigms for metacommunities: the patch-dynamic view, the species-sorting view, the mass effects view and the neutral view, that each emphasizes different processes of potential importance in metacommunities. These ...

 

Abies Miller

  
In Flora Europaea, Volume 1: Psilotaceae to Platanaceae (1993), pp. 37-38

Abstract

Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families, genera, species and subspecies, together with bibliographic details for accepted species, summaries of geographical distribution, chromosome numbers and habitat information. This new edition of Volume 1 brings the treatment of the first 79 families up to ...

 

Defining pyromes and global syndromes of fire regimes

  
Proceedings of the National Academy of Sciences, Vol. 110, No. 16. (16 April 2013), pp. 6442-6447, https://doi.org/10.1073/pnas.1211466110

Abstract

Fire is a ubiquitous component of the Earth system that is poorly understood. To date, a global-scale understanding of fire is largely limited to the annual extent of burning as detected by satellites. This is problematic because fire is multidimensional, and focus on a single metric belies its complexity and importance within the Earth system. To address this, we identified five key characteristics of fire regimes—size, frequency, intensity, season, and extent—and combined new and existing global datasets to represent each. We ...

 

Harmonized classification scheme of fire causes in the EU adopted for the European Fire Database of EFFIS

  

Abstract

The information on the causes of forest fires is of paramount importance to support the environmental and civil protection policies and design appropriate prevention measure. At the European level a simple common scheme with 4 fire causes classes (deliberate, accident/negligence, natural and unknown) has been used to record information on fire causes since 1992. European countries use national schemes which in most cases are much more detailed than the simple 4 common classes, but they are not harmonized and detailed cross ...

 

The economic possibilities of conservation

  
The Quarterly Journal of Economics, Vol. 27, No. 3. (01 May 1913), pp. 497-519, https://doi.org/10.2307/1883375

Abstract

[Excerpt] It is desirable to confine the idea of conservation to its original application to natural resources. Even in this sense the concept as developed in the conservation movement comprises several distinct purposes, which are not clearly separated in the popular mind. In the first place, it expresses a demand for a fair distribution of the natural resources not yet alienated. [\n] [...] The real heart of the conservation problem presents an issue which taxes the resources of economic theory to the utmost. ...

 

Flora of North America North of Mexico

  
Vol. 1-28 (1993+)

Abstract

Flora of North America builds upon the cumulative wealth of information acquired since botanical studies began in the United States and Canada more than two centuries ago. Recent research has been integrated with historical studies, so that the Flora of North America is a single-source synthesis of North American floristics. FNA has the full support of scientific botanical societies and is the botanical community's vehicle for synthesizing and presenting this information. The Flora of North America Project will treat more than 20,000 ...

 

Flore forestière française, Montagnes

  
Vol. 2 (1999)

Abstract

869 espèces des montagnes décrites et dessinées au trait dans les moindres détails. Une véritable encyclopédie botanique. Pour tout achat de la collection Flore forestière (les trois tomes), le coffret Flore forestière en bois massif vous est offert. ...

 

(INRMM-MiD internal record) List of keywords of the INRMM meta-information database - part 35

  
(February 2014)
Keywords: inrmm-list-of-tags   supply-chain   support-vector-machines   supporting-services   surface-roughness   surprise   survey   survival   susceptibility   sustainability   sustainable-development   sustainable-forest   sustainable-forest-management   sustainable-forestry   sweden   swietenia-macrophylla   swiss   switzerland   syagrus-romanzoffiana   sycamore   symbiosis   symphoricarpos-albus   symphoricarpos-spp   symphytum-tauricum   symptoms   synergy   synonyms   syntax-vs-semantics   syntaxonomy   system   system-catastrophe   system-dynamics   system-engineering   system-of-systems   system-theory   systematics   syzygium-aromaticum   syzygium-cumini   tabebuia-chrysantha   tabebuia-heterophylla   tamarindus-indica   tamarix-canariensis   tamarix-chinensis   tamarix-kotschyi   tamarix-mascatensis   tamarix-nilotica   tamarix-octandra   tamarix-parviflora   tamarix-ramosissima   tamarix-spp   tamarix-tetragyna   tamarix-tetrandra   taper-curve   taphrorychus-bicolor   tasmania   taxa   taxine   taxodium-distichum   taxodium-mucronatum   taxodium-spp   taxol   taxon-specific-parameters   taxonomy   taxus-baccata   taxus-brevifolia   taxus-spp   team-diversity   technocracy   technology   technology-mediated-communication   tecoma-stans   tectona-grandis   tectonic   temperate-climate   temperate-continental-forest   temperate-europe   temperate-forest   temperate-mountain-system   temperate-trees   temperature   temperature-change   temperature-range   tensile-root-strength   terminalia-catappa   terminalia-superba   terminology   terpenes   terra-modis   terrain-ruggedness-index   terrestrial-earth-surface   terrestrial-lidar   terseness   tertiary   tetraclinis-articulata   tetraclinis-salicornioides   tetropium-castaneum   text-editors   thailand   thanasimus-formicarius   thaumetopoea-pityocampa  

Abstract

List of indexed keywords within the transdisciplinary set of domains which relate to the Integrated Natural Resources Modelling and Management (INRMM). In particular, the list of keywords maps the semantic tags in the INRMM Meta-information Database (INRMM-MiD). [\n] The INRMM-MiD records providing this list are accessible by the special tag: inrmm-list-of-tags ( http://mfkp.org/INRMM/tag/inrmm-list-of-tags ). ...

 

Træer i Nordeuropa

  
(1977)
 

License compatibility and relicensing

  
In Licenses (2016)

Abstract

If you want to combine two free programs into one, or merge code from one into the other, this raises the question of whether their licenses allow combining them. [\n] There is no problem merging programs that have the same license, if it is a reasonably behaved license, as nearly all free licenses are.(*) [\n] What then when the licenses are different? In general we say that several licenses are compatible if there is a way to merge code under those various licenses ...

 

Jalavan suku sekä lehto- ja vuorijalavan tak sonomia

  
Sorbifolia, Vol. 28, No. 1. (1997), pp. 5-16

Abstract

TITLE: The genus Ulmus, and taxonomy of Ulmus minor and U. glabra. A brief summary i given on the taxonomic and nomenclatural problems in the genus Ulmus (U imaceae), especially in sect. Ulmus. Hybrid s between the species are relatively common or easy to produce, except for U. americana L. and U. laevis Pallas. A fairly wide species concept in the genus is accepted . However, the author considers that two subspecies, a norhern one and a southern one, should be recognized ...

 

Trees of Britain and Europe

  
(1999)

Abstract

This field guide contains a collection of photographs of everything you need to identify a tree - whether in winter, spring, summer or autumn. Every species has a photograph of a whole tree, plus close-ups of its bark, buds, leaves, male or female flowers, and fruit. The photographs are backed up with text describing what to look for to differentiate one similar looking species from another. It covers over 800 species of tree - every species that is native to Europe, ...

 

The Hamlyn Guide to Trees of Britain and Europe

  
(1992)

Abstract

Tree lovers the world over will treasure this year-round handbook of facts to help in the identification and propagation of over 400 tree species. Close-up and full-growth drawings show common and rare species arranged according to their family systems, showing both their permanent and seasonal features, including details of their leaves and bark, flowers and seeds, fruits and nuts. Special feature: a 20-page chart summarizing over 350 at-a-glance checklists for easy identification of each species. ...

 

Standards for associations and alliances of the U.S. National Vegetation Classification

  
Ecological Monographs, Vol. 79, No. 2. (May 2009), pp. 173-199, https://doi.org/10.1890/07-1804.1

Abstract

This article provides guidelines for the description, documentation, and review of proposals for new or revised plant associations and alliances to be recognized as units of vegetation within the U.S. National Vegetation Classification (NVC). By setting forth standards for field records, analysis, description, peer review, and archiving, the Ecological Society of America's Vegetation Classification Panel, in collaboration with the U.S. Federal Geographic Data Committee, NatureServe, and others, seeks to advance our common understanding of vegetation and improve our capability to sustain ...

 

Azərbaycan florasının konspekti (1961-2009) - Əlavələr və dəyişikliklərlə

  
(2011)

Abstract

Title: Flora of Azerbaijan (1961-2009) - Additions and changes ...

 

Notes à La Flore de Corse, XXV

  
Candollea, Vol. 70, No. 1. (1 June 2015), pp. 109-140, https://doi.org/10.15553/c2015v701a10

Abstract

These “notes” deal with 110 noteworthy taxa amongst which 21 are new to the island's flora. One of these taxa is native: Reseda alba subsp. hookeri and 20 are introduced: Abies pinsapo, Acer ×coriaceum, Albizia julibrissin, Arundo micrantha, Azolla filiculoides, Bolboschoenus laticarpus, Digitaria ciliaris, Digitaria violascens, Eucalyptus camaldulensis, E. globulus, Genista januensis subsp. lydia, Hedera helix subsp. maroccana, Morus kagayamae, Oenothera rosea, Paspalum vaginatum, Puccinellia festuciformis subsp. lagascana, Silene fuscata, Solanum mauritianum, Veronica filiformis and Vitis riparia × V. rupestris. The ...

 

Corylaceae

  
In Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity (2009)

Abstract

Euro+Med Plantbase integrates and critically evaluates information from Flora Europaea, Med-Checklist, the Flora of Macaronesia, and from regional and national floras and checklists from the area as well as additional taxonomic and floristic literature. This is complemented by the European taxa of several families taken from the World Checklist of Selected Plant Families and of the Leguminosae from the International Legume Database and Information Service ILDIS ...

 

O problemi međusobnog razlikovanja hrastova Quercus pubescens Willd. i Quercus virgiliana (Ten.) Ten.

  
Hrvatski Šumarski List, Vol. 131, No. 1-2. (2007), pp. 57-60

Abstract

Title: About the problem of differentiation between the oaks Quercus pubescens Willd. and Quercus virgiliana (Ten.) Ten.) ...

 

Quercus L.

  
In Flora Europaea, Volume 1 - Psilotaceae to Platanaceae (1993), pp. 72-76

Abstract

Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families, genera, species and subspecies, together with bibliographic details for accepted species, summaries of geographical distribution, chromosome numbers and habitat information. This new edition of Volume 1 brings the treatment of the first 79 families up to ...

 

Chloroplast DNA variation in European white oaks

  
Forest Ecology and Management, Vol. 156, No. 1-3. (February 2002), pp. 5-26, https://doi.org/10.1016/s0378-1127(01)00645-4

Abstract

A consortium of 16 laboratories have studied chloroplast DNA (cpDNA) variation in European white oaks. A common strategy for molecular screening, based on restriction analysis of four PCR-amplified cpDNA fragments, was used to allow comparison among the different laboratories. A total of 2613 oak populations (12,214 individual trees from eight species) were sampled from 37 countries, and analysed with the four fragments. They belong to eight related oak species: Quercus robur, Q. petraea, Q. pubescens, Q. frainetto, Q. faginea, Q. pyrenaica, ...

 

Los árboles y arbustos de la Península Ibérica e Islas Baleares (especies silvestres y las principales cultivadas)

  
Vol. 1 (2001)

Abstract

Obra compuesta por dos volúmenes. Este libro es un tratado monográfico en dos volúmenes de los árboles y arbustos que crecen en la Península Ibérica y en las Islas Baleares . Se refiere tanto a los árboles y arbustos silvestres como a los naturalizados y cultivados de forma habitual en nuestros parques, jardines o alamedas. Recoge todo tipo de información y datos curiosos: la descripción de la planta y de la familia a la que pertenece, su distribución, el lugar en ...

 

Handbuch der Laubgehölze

  
Vol. 3 (1978)
 

Downy-oak woods of Italy: phytogeographical remarks on a controversial taxonomic and ecologic issue

  
In Warm-temperate Deciduous Forests around the Northern Hemisphere (2015), pp. 139-151
 

Comparative leaf surface morphology and molecular data of five oaks of the subgenus Quercus Oerst (Fagaceae)

  
Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, Vol. 143, No. 3. (1 November 2009), pp. 543-554, https://doi.org/10.1080/11263500902722980

Abstract

Abstract Comparisons between different data sets are important in taxonomic studies, particularly for complex taxa such as the genus Quercus. However, there is scarce literature on comparative morphological and molecular analyses in oaks. Here we describe an experimental approach based on the correlation between micromorphological features and molecular data in order to characterize and discriminate among five closely related species: Q. robur, Q. petraea, Q. frainetto, Q. pubescens and Q. virgiliana. ...

 

Is Quercus virgiliana a distinct morphological and genetic entity among European white oaks?

  
Turkish Journal of Agriculture and Forestry, Vol. 37, No. 5. (2013), pp. 632-641

Abstract

The existence of Quercus virgiliana Ten. is a subject of debate among botanists and silviculturists. It was considered a distinct species, sometimes as an intraspecific taxonomic unit of Q. pubescens L., or was not even recognized as a taxon or infrataxon. This disagreement with regard to the taxonomic classification is explained by the morphological similarities between Q. virgiliana and Q. pubescens, with a small overlap between particular leaf and fruit traits. The main objective of this study was to evaluate the ...

 

A review of the application of the name Quercus dalechampii

  
Taxon, Vol. 61, No. 6. (2012), pp. 1311-1316

Abstract

European taxonomists are divided regarding Quercus dalechampii, considering it either: (1) a distinct species close to Q. petraea, (2) a distinct species close to Q. pubescens, or (3) falling within the morphological variability of previously described species, including Q. petraea and Q. pubescens. These taxonomic disagreements are largely due to inconsistencies between the description of Q. dalechampii and much of its original material. In order to resolve these differing interpretations, all available original material was examined and a lectotype, superseding a ...

 

Taxonomical revision about the deciduous oaks of Sicily

  
Webbia, Vol. 54, No. 1. (1 January 1999), pp. 1-72, https://doi.org/10.1080/00837792.1999.10670670

Abstract

On the basis of literature, herbarium and field investigations, a survey of deciduous oaks occurring in Sicily is presented. A morphological description with drawings and some chorological and ecological observations is reported for each species. It is emphasized that the phenotypical variability observed within the Q. humilis group in Sicily, even if the S. Thyrrhenian area is considered as probable center of speciation for the group, related to deforestation, which had previously favoured the genetic mixing among the population. This study ...

 

Flora of Russia: The European Part and Bordering Regions - Volume 6

  
(2001)

Abstract

This series of books is a translation of Flora Evropeiskoi Chasti SSR, which provides information on the wild and most important cultivated plants growing in the European portion of Russia and its bordering regions. The text describes plant systematics, habitat conditions, range, and chromosome numbers. The series serves as a manual for botanists, agronomists, teachers, students and naturalists. Volume 6 of Flora of Russia includes descriptions of 450 species belonging to 65 genera and three families of the Order Fabales. ...

 

Larix Miller

  
In Flora Europaea, Volume 1: Psilotaceae to Platanaceae (1993), pp. 40-40

Abstract

Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families, genera, species and subspecies, together with bibliographic details for accepted species, summaries of geographical distribution, chromosome numbers and habitat information. This new edition of Volume 1 brings the treatment of the first 79 families up to ...

 

Geographic Patterns of Genetic Variation in Eucalyptus globulus ssp. globulus and a Revised Racial Classification

  
Australian Journal of Botany, Vol. 47, No. 2. (1999), pp. 237-263

Abstract

The geographic patterns of genetic variation in a wide variety of quantitative traits were studied in Eucalyptus globulus ssp. globulus and its intergrades, leading to a revised racial classification. The analysis was based on 35 traits assessed in five field trials in northern Tasmania from approximately 500 open-pollinated families, encompassing 49 collection localities in native stands. There were significant differences between the collection localities for most traits. While growth and survival traits exhibited weak spatial structuring, there were clear regional patterns ...

 

Conifers Around the World: Conifers of the Temperate Zones and Adjacent Regions

  
Vol. 1 (2011)

Abstract

Until now, the world's temperate conifers have never in a single publication, in a standardized format, been depicted in photographs taken from natural habitats. The authors traveled the world over 4 decades to document temperate woody plants for a planned Dendrological Atlas. The 2-volume Conifers Around the World will appeal to a wide range of readers, from scholars to armchair travelers. The conifers are presented by geographical region, offering an account of their natural distribution. Starting in Europe (including North Africa, ...

 

Molecular cytogenetics and flow cytometry reveal conserved genome organization in Pinus mugo and P. uncinata

  
Annals of Forest Science In Annals of Forest Science, Vol. 68, No. 1. (2011), pp. 179-187, https://doi.org/10.1007/s13595-011-0019-9

Abstract

• Introduction The most common representatives of the European mountain pine complex (Pinus mugo s.l.) are P. mugo s.s. and Pinus uncinata. • Materials and methods Genome characterization of P. mugo and P. uncinata was studied using fluorescence in situ hybridization of 5S and 18–5.8–26S rDNA, fluorochrome banding for heterochromatin characterization, and flow cytometry for DNA content measurement. • Results and discussion Distribution of 5S and 18S rDNA showed identical patterns for both pine species. In contrast, heterochromatin patterns revealed slight differences in the number and ...

 

Taxonomic position of Pinus uliginosa Neumann as related to other taxa of Pinus mugo complex

  
Acta Societatis Botanicorum Poloniae, Vol. 63, No. 3-4. (1998), pp. 269-274, https://doi.org/10.5586/asbp.1998.035

Abstract

Studies on taxonomic position of Pinus uliginosa Neumann, P. uncinata Ram. and P. mugo Turra, indicate a significant specificity of P. uliginosa population from Wielkie Torfowisko Batorowskie Peat Bog. Pinus uncinata in respect of genetic similarity is close to Pinus mugo Turra populations from the Tatra Mts. The time of divergence of P. uliginosa from the common ancestor, taking into account Nei's genetic distances, is twice as long as in the case of Pinus uncinata. In the view of the results ...

 

Effectiveness of neutral RAPD markers to detect genetic divergence between the subspecies uncinata and mugo of Pinus mugo Turra

  
Silva Fennica, Vol. 40, No. 3. (2006), pp. 391-406, https://doi.org/10.14214/sf.476

Abstract

Fifteen populations of Pinus mugo subsp. mugo (shrub) and Pinus mugo subsp. uncinata (erect), located in the Alps, were investigated through genetic variation scored at 64 polymorphic RAPD loci. In addition, morphological traits of the female cones were analysed. According to AMOVA most of the genetic variation was found within populations (83.39%), and only 1.25% of it between subspecies. Populations differed in terms of their internal genetic variation, with Nei’s gene diversity ranging from 0.227 to 0.397. Morphological data showed differences ...

 

Contribution to the taxonomy of Pinus uncinata (Pinaceae) based on cone characters

  
Plant Systematics and Evolution In Plant Systematics and Evolution, Vol. 264, No. 1-2. (March 2007), pp. 57-73, https://doi.org/10.1007/s00606-006-0501-2

Abstract

Eight natural populations of Pinus uncinata Ramond from the Spanish Pyrenees, five of P. mugo Turra from the Carpathians, the Sudethians and Abruzzian Apennines, three of P. sylvestris L. from the Central-European Lowland and the Iberian Peninsula and one of P. uliginosa Neumann from SW Poland have been compared biometrically in 16 cone characters. P. uncinata appears the most distant from all other taxa, differing by having the largest and most asymmetric cones and the thickest apophyses with the most prominent ...

 

Taxonomic differences among closely related pines Pinus sylvestris, P. mugo, P. uncinata, P. rotundata and P. uliginosa as revealed in needle sclerenchyma cells

  
Flora - Morphology, Distribution, Functional Ecology of Plants, Vol. 202, No. 7. (September 2007), pp. 555-569, https://doi.org/10.1016/j.flora.2006.11.004

Abstract

The purpose of the present study was to test the taxonomic value of sclerenchyma in distinguishing Pinus sylvestris and P. mugo, P. uncinata, P. rotundata and P. uliginosa, all representing the subsection Sylvestres within the genus Pinus. Thirty-six samples were gathered in natural populations. Every sample was represented with 30 individuals, every individual with 10 brachyblasts. Three types of sclerenchymatic cells surrounding the resin canals and four between vascular bundles were distinguished. Relations among samples and taxa were verified using discriminant ...

 

Pinus uncinata Ramond taxonomy based on needle characters

  
In Plant Systematics and Evolution, Vol. 227, No. 3-4. (2001), pp. 183-194, https://doi.org/10.1007/s006060170047

Abstract

11 needle characters of Pinus uncinata Ramond from the Spanish Pyrenees, P. mugo Turra from the Tatra Mountains, and P. sylvestris L. from N.E. Poland were analysed. It was shown that P. uncinata is much more closely related to P. mugo than to P. sylvestris. Nevertheless P. uncinata remains distinct from both in a number of the characters examined. The species differs from P. mugo especially in the length of the needles and in the distance between the vascular bundles. It differs ...

 

Taxonomic revision of the Pinus mugo complex and P. rhaetica (P. mugo sylvestris) (Pinaceae)

  
Nordic Journal of Botany, Vol. 7, No. 4. (September 1987), pp. 383-408, https://doi.org/10.1111/j.1756-1051.1987.tb00958.x

Abstract

The Pinus mugo complex is revised, and a new infraspecific classification of the species is proposed. The species is divided into two subspecies and an intermediate nothossp., viz. ssp. mugo, ssp. uncinata and nothossp. rotundata. P. mugo ssp. mugo is divided into f. mugo and f. applanata comb, et stat. nov. (P. pumilio) and P. mugo nothossp. rotundata into f. rotundata and f, mughioides comb. nov. The putative hybrid P. mugo × sylvestris found in mixed stands of the parents is ...

 

The Pinus mugo complex - its structuring and general overview of the used nomenclature

  
Journal of Forest Science, Vol. 53, No. 6. (2007), pp. 253-266

Abstract

The Pinus mugo complex (P. mugo Turra sensu lato, and/or species aggregate or group − P. mugo agg., including its internal as well as external aggregate hybrids) is an important fragment of European dendroflora. For its high variability this complicated group has not been solved in taxonomical terms satisfactorily yet. Most problems are mainly caused by a large amount of taxa of uncertain value described in the past, which often more or less overlap or are based on insufficiently researched and ...

 

Quercus trojana subsp. yaltirikii (Fagaceae), a new subspecies from Southern Turkey

  
Willdenowia, Vol. 36, No. 2. (30 October 2006), pp. 845-849

Abstract

Geographic distribution and infraspecific variation of the E Mediterranean Quercus trojana is discussed. Q. trojana subsp. yaltirikii is described from the region of Içel and Antalya at the southeastern margin of the species' range as a subspecies new to science, characterized by densely stellate-hairy leaves and twigs. ...

 

Populus L.

  
In Flora Europaea, Volume 1: Psilotaceae to Platanaceae (1993), pp. 64-67

Abstract

Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families, genera, species and subspecies, together with bibliographic details for accepted species, summaries of geographical distribution, chromosome numbers and habitat information. This new edition of Volume 1 brings the treatment of the first 79 families up to ...

 

Morphological, Cytogenetic, and Molecular Evidence for Introgressive Hybridization in Birch

  
Journal of Heredity, Vol. 92, No. 5. (01 September 2001), pp. 404-408, https://doi.org/10.1093/jhered/92.5.404

Abstract

Extensive morphological variation of tetraploid birch (Betula pubescens) in Iceland is believed to be due to gene flow from diploid dwarf birch (B. nana) by means of introgressive hybridization. A combined morphological and cytogenetic approach was used to investigate this phenomenon in two geographically separated populations of natural birch woodland in Iceland. The results not only confirmed introgressive hybridization in birch, but also revealed bidirectional gene flow between the two species via triploid interspecific hybrids. The populations showed continuous morphological variation ...

 

Betula L.

  
In Flora Europaea, Volume 1: Psilotaceae to Platanaceae (1993), pp. 69-70

Abstract

Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families, genera, species and subspecies, together with bibliographic details for accepted species, summaries of geographical distribution, chromosome numbers and habitat information. This new edition of Volume 1 brings the treatment of the first 79 families up to ...

 

Phylogenetic relationships in Betula (Betulaceae) based on AFLP markers

  
Tree Genetics & Genomes In Tree Genetics & Genomes, Vol. 4, No. 4. (1 October 2008), pp. 911-924, https://doi.org/10.1007/s11295-008-0162-0

Abstract

Abstract  The genus Betula comprises various species in boreal and temperate climate zones of the Northern Hemisphere. The taxonomy of Betula is controversial and complicated by parallel evolution of morphological traits, polyploidization events, and extensive hybridization and introgression among species. Multilocus molecular data from AFLPs were used to provide phylogenetic information. A large number of polymorphic markers (321 variable bands) were produced in 107 Betula accessions from 23 species and 11 hybrids. The AFLP results were largely congruent with the results from ...

 

What can molecular markers tell us about the glacial and postglacial histories of European birches?

  
Silva Fennica, Vol. 46, No. 5. (2012), https://doi.org/10.14214/sf.923

Abstract

The last glaciation was one of the most severe of the Pleistocene epoch. The development of the Scandinavian ice sheet forced many species to reduce their ranges to areas with favourable climatic conditions. Most European species survived the Last Glacial Maximum in refugia in southern parts of Europe. Cold-tolerant species, such as birch trees and shrubs, could also inhabit western, eastern or central Europe. After climate warming, Holocene recolonisation began. This paper presents a comparative analysis of the genetic variation of ...

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