Extracted from the Mendeley GBIF Public Library.
Dellinger A, Essl F, Hojsgaard D, Kirchheimer B, Klatt S, Dawson W et al. (2015)
The New phytologist.
Biological invasions can be associated with shifts of the species' climatic niches but the incidence of such shifts is under debate. The reproductive system might be a key factor controlling such shifts because it influences a species' evolutionary flexibility. However, the link between reproductive systems and niche dynamics in plant invasions has been little studied so far. We compiled global occurrence data sets of 13 congeneric sexual and apomictic species pairs, and used principal components analysis (PCA) and kernel smoothers to compare changes in climatic niche optima, breadths and unfilling/expansion between native and alien ranges. Niche change metrics were compared between sexual and apomictic species. All 26 species showed changes in niche optima and/or breadth and 14 species significantly expanded their climatic niches. However, we found no effect of the reproductive system on niche dynamics. Instead, species with narrower native niches showed higher rates of niche expansion in the alien ranges. Our results suggest that niche shifts are frequent in plant invasions but evolutionary potential may not be of major importance for such shifts. Niche dynamics rather appear to be driven by changes of the realized niche without adaptive change of the fundamental climatic niche.
Keywords: adaptation, asexual reproduction, niche shifts, plant invasion, reproductive system, species distribution modelling
Kleckova I, Cesanek M, Fric Z, Pellissier L (2015)
Diversification of the cold-adapted butterfly genus Oeneis related to Holarctic biogeography and climatic niche shifts.
Molecular phylogenetics and evolution 92 255-265.
Both geographical and ecological speciation interact during the evolution of a clade, but the relative contribution of these processes is rarely assessed for cold-dwelling biota. Here, we investigate the role of biogeography and the evolution of ecological traits on the diversification of the Holarctic arcto-alpine butterfly genus Oeneis (Lepidoptera: Satyrinae). We reconstructed the molecular phylogeny of the genus based on one mitochondrial (COI) and three nuclear (GAPDH, RpS5, wingless) genes. We inferred the biogeographical scenario and the ancestral state reconstructions of climatic and habitat requirements. Within the genus, we detected five main species groups corresponding to the taxonomic division and further paraphyletic position of Neominois (syn. n.). Next, we transferred O. aktashi from the hora to the polixenes species group on the bases of molecular relationships. We found that the genus originated in the dry grasslands of the mountains of Central Asia and dispersed over the Beringian Land Bridges to North America several times independently. Holarctic mountains, in particular the Asian Altai Mts. and Sayan Mts., host the oldest lineages and most of the species diversity. Arctic species are more recent, with Pliocene or Pleistocene origin. We detected a strong phylogenetic signal for the climatic niche, where one lineage diversified towards colder conditions. Altogether, our results indicate that both dispersal across geographical areas and occupation of distinct climatic niches promoted the diversification of the Oeneis genus.
Keywords: Lepidoptera, Molecular systematics, Niche evolution, Quaternary, Satyrinae, Temperate
Rijal D, Alm T, Jahodov├í ┼, Sten├Şien H, Alsos I (2015)
Sparse, incomplete and inappropriate historical records of invasive species often hamper invasive species management interventions. Population genetic analyses of invaders might provide a suitable context for the identification of their source populations and possible introduction routes. Here, we describe the population genetics of Heracleum persicum Desf. ex Fisch and trace its route of introduction into Europe. Microsatellite markers revealed a significantly higher genetic diversity of H. persicum in its native range, and the loss of diversity in the introduced range may be attributed to a recent genetic bottleneck. Bayesian cluster analysis on regional levels identified three and two genetic clusters in the native and the introduced ranges, respectively. A global structure analysis revealed two worldwide distinct genetic groups: one primarily in Iran and Denmark, the other primarily in Norway. There were also varying degrees of admixture in England, Sweden, Finland and Latvia. Approximate Bayesian computation indicated two independent introductions of H. persicum from Iran to Europe: the first one in Denmark and the second one in England. Finland was subsequently colonized by English populations. In contrast to the contemporary hypothesis of English origin of Norwegian populations, we found Finland to be a more likely source for Norwegian populations, a scenario supported by higher estimated historical migration from Finland to Norway. Genetic diversity per se is not a primary determinant of invasiveness in H. persicum. Our results indicate that, due to either pre-adaptations or rapid local adaptations, introduced populations may have acquired invasiveness after subsequent introductions, once a suitable environment was encountered. This article is protected by copyright. All rights reserved.
Keywords: Approximate Bayesian Computation, biodiversity, genetic variation, giant hogweeds, invasive alien species, population genetics
van Kleunen M, Dawson W, Essl F, Pergl J, Winter M, Weber E et al. (2015)
Nature 525(7567) 100-103.
All around the globe, humans have greatly altered the abiotic and biotic environment with ever-increasing speed. One defining feature of the Anthropocene epoch1, 2 is the erosion of biogeographical barriers by human-mediated dispersal of species into new regions, where they can naturalize and cause ecological, economic and social damage3. So far, no comprehensive analysis of the global accumulation and exchange of alien plant species between continents has been performed, primarily because of a lack of data. Here we bridge this knowledge gap by using a unique global database on the occurrences of naturalized alien plant species in 481 mainland and 362 island regions. In total, 13,168 plant species, corresponding to 3.9% of the extant global vascular flora, or approximately the size of the native European flora, have become naturalized somewhere on the globe as a result of human activity. North America has accumulated the largest number of naturalized species, whereas the Pacific Islands show the fastest increase in species numbers with respect to their land area. Continents in the Northern Hemisphere have been the major donors of naturalized alien species to all other continents. Our results quantify for the first time the extent of plant naturalizations worldwide, and illustrate the urgent need for globally integrated efforts to control, manage and understand the spread of alien species.
Keywords: Biodiversity, Biogeography, Invasive species, Macroecology
Cadima X, van Zonneveld M, Scheldeman X, Casta├▒eda N, Pati├▒o F, Beltran M et al. (2014)
Endemic wild potato (Solanum spp.) biodiversity status in Bolivia: Reasons for conservation concerns
Journal for Nature Conservation 22(2) 113-131.
Crop wild relatives possess important traits, therefore ex situ and in situ conservation efforts are essential to maintain sufficient options for crop improvement. Bolivia is a centre of wild relative diversity for several crops, among them potato, which is an important staple worldwide and the principal food crop in this country. Despite their relevance for plant breeding, limited knowledge exists about their in situ conservation status. We used Geographic Information Systems (GIS) and distribution modelling with the software Maxent to better understand geographic patterns of endemic wild potato diversity in Bolivia. In combination with threat layers, we assessed the conservation status of all endemic species, 21 in total. We prioritised areas for in situ conservation by using complementary reserve selection and excluded 25% of the most-threatened collection sites because costs to implement conservation measures at those locations may be too high compared to other areas. Some 70% (15 of 21 species) has a preliminary vulnerable status or worse according to IUCN red list distribution criteria. Our results show that four of these species would require special conservation attention because they were only observed in <15 locations and are highly threatened by human accessibility, fires and livestock pressure. Although highest species richness occurs in south-central Bolivia, in the departments Santa Cruz and Chuquisaca, the first priority area for in situ conservation according to our reserve selection exercise is central Bolivia, Cochabamba; this area is less threatened than the potato wild relativesÔÇÖ hotspot in south-central Bolivia. Only seven of the 21 species were observed in protected areas. To improve coverage of potato wild relativesÔÇÖ distribution by protected areas, we recommend starting inventories in parks and reserves with high modelled diversity. Finally, to improve ex situ conservation, we targeted areas for germplasm collection of species with <5 accessions conserved in genebanks.
Keywords: Crop wild relatives, Ex situ conservation, IUCN red listing, In situ conservation, Potato breeding material, Reserve selection, Species distribution modelling, Threat assessment
Hustad V, Ku─Źera V, Ryb├írikov├í N, Lizo┼ł P, Gaisler J, Baroni T et al. (2014)
Geoglossum simile of North America and Europe: distribution of a widespread earth tongue species and designation of an epitype
Geoglossum simile is a distinctive species of the earth tongue class Geoglossomycetes, first described in 1873. The taxonomic standing of this species has long been disputed, resulting in nearly 70 years of potential misdiagnoses. Although G. simile was originally described from North America, it has subsequently been reported from several European countries as well as Asia, Australasia, and India. In this study, we report the first records of G. simile from Slovakia and the Czech Republic, examine the morphological and molecular diversity of Northern Hemisphere collections, discuss the taxonomic history and current status of the species, and designate a recent North American collection as the epitype of this widely distributed and conservationally significant species.
Keywords: ascomycota, conservation, fungal, geoglossomycetes, phylogenetics, systematics
Kalwij J, Steyn C, le Roux P (2014)
Repeated monitoring as an effective early detection means: first records of naturalised Solidago gigantea Aiton (Asteraceae) in southern Africa
South African Journal of Botany 93 204-206.
Early detectionofemerginginvasive plants depends onmaximizingthe probability of detecting newpopulations. Repeated surveys along a gradient of environmental conditions or in areas exposed to high propagule pressure provide a potentially efficient strategy for early detection of alien species. The long-termmonitoring of such an area resulted in the documentation of the first naturalised Solidago gigantea Aiton (Asteraceae) population for southern Africa. This population consisted of c. 45 individuals growing in two locations on unmanaged grassland in the Drakensberg Mountains at an elevation of 1619 m a.s.l. Solidago gigantea readily invades unmanaged European grasslands, altering biomass and transforming habitats. Moreover, since goldenrods (Solidago spp) are perennial species reproducing through a large number of wind-dispersed seeds and belowground rootstocks, these species appearwell pre-adapted to the fire-prone grassland biome of South Africa. We therefore suggest early-stage eradication of S. gigantea before it potentially becomes an unmanageable and costly invasive species in this region. This study supports long-termmonitoring programmes as an effectivemeans for early detection of new invasive species.
Keywords: Colonisation, Emerging invaders, Goldenrod, Management, Non-native species, Weed risk assessment
Kolesik P, Butterill P (2014)
Austral Entomology Forthcoming.
Two new species of gall midges that feed on trees in Papua New Guinea are described. The larvae of Schizomyia novoguineensis Kolesik sp. nov. transform the flowers of Macaranga aleuritoides (Euphorbiaceae) into spherical galls preventing sexual reproduction of the host tree. The larvae of Rhopalomyia psychotriae Kolesik sp. nov. induce pustulate leaf galls on Psychotria ramuensis (Rubiaceae). Descriptions of adults and immature stages, and DNA sequences of the cytochrome oxidase unit I mitochondrial gene segment, are given for each of the new species.
Keywords: COI, barcoding, insect taxonomy, primary tropical forest, secondary tropical forest
Lucarini D, Gigante D, Landucci F, Panfili E, Venanzoni R (2014)
The anArchive taxonomic Checklist for Italian botanical data banking and vegetation analysis: Theoretical basis and advantages
Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology 1-8.
In recent years, research in botany was increasingly related with the use of large data-sets and data banks, in order to address emerging issues such as the severe risk of species, habitats and biodiversity loss. In this frame, the anArchive taxonomic Checklist, an online synonymized list of botanical species names, developed to support the botanical data banking and vegetation analysis, is presented and discussed here. The benefits deriving from such a supervised and referenced tool are emphasized. They include the possibility to keep track of old and new species names, pointing out the latest reviewed accepted scientific name and its synonyms, and harmonizing different taxonomic points of view. Furthermore, the list is open access and expert qualified customers can collaborate to its improvement. The basic unit of the taxonomic Checklist is an object including the taxon name at specific or, when present, infraspecific level; the taxonomic frame stops at the level of family and ranks higher than genus ar...
Keywords: Biodiversity informatics, database, harmonization, nomenclature, plant names, synonymity
Metallinou M, Vasconcelos R, Sm├şd J, Sindaco R, Carranza S (2014)
Filling in the gap: two new records and an updated distribution map for the Gulf Sand gecko Pseudoceramodactyluskhobarensis Haas, 1957.
Biodiversity data journal 2(2) e4011.
The genus Pseudoceramodactylus Haas, 1957 comprises a single species, the Gulf Sand gecko P. khobarensis, described from eastern Saudi Arabia (Haas 1957) and is known to be distributed across parts of the Arabian Gulf, including Kuwait, Bahrain, Qatar and the United Arab Emirates (U.A.E.) (Sindaco and Jerem─Źenko 2008, Valde├│n et al. 2013). It has also been reported from Qeshm Island, Iran (Dakhteh et al. 2007, Sharifi et al. 2012) and a few localities are known from coastal eastern Oman (Fujita and Papenfuss 2011, Gardner 2013, Metallinou et al. 2012). Pseudoceramodactylus khobarensis are nocturnal geckos, found on moist, salt-impregnated to solid, salt-encrusted flats (sabkhas) (Fig. 1a, b, c) and are often the sole reptile dweller of such extreme environments (Arnold 1977, Gardner 2013). Their fingers are swollen with loose connective tissue and bear numerous elongated spiny scales on the underside (Arnold 1977), considered to be an adaptation to this particular substrate.
Keywords: 12S, Arabia, DNA, Gekkonidae, Reptilia, distribution range, sabkha