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Showing 1 to 20 of 374 for “"ERICA"”.
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Intraspecific variation in Erica coccinea
The genus Erica is the most specious in the Cape Floristic Region, with a large range of habitats, pollination syndromes and fire survival strategies. Erica coccinea, like many other Cape Erica species, has high intraspecific variability between populations. In addition to variability in floral …
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Self-pollination in the genus Erica
… was investigated in eight species of the diverse Erica genus. Self-pollination was found to occur in five out of the eight species, with mainly bird pollinated species having a high degree of selfing. The use of a broken anther ring as an indication of visitation and pollination of the flowers was …
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The Reproductive biology of Erica pudens
Erica is the largest genus in the Cape Florisitic Region (CFR) boasting a diverse range of floral morphology and pollination systems. Even though it is such a diverse genus, there is minimal research examining the pollination biology of specific species. This research inspects the pollination …
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Floral evolution of long-tubed Erica species
The genus Erica has undergone an extreme radiation in the Cape and exhibits a diversity of pollination syndromes and floral traits. This makes Erica well-suited to study the evolution of floral traits and how they impact speciation. The first chapter explored the role of ultraviolet colouration by …
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Germination success and drought response in Erica coccinea
… that the distribution of resprouter and seeder Erica in the Cape Floristic Region (CFR) of South Africa is determined more by water availability. Erica seeders are predicted to withstand the mild droughts of the southwest CFR better than Erica resprouters, which would account for the abundance …
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Inflation targeting y pass-through en Am ́erica Latina
La implementación de Inflation Targeting como herramienta de la políica monetaria en varios países de América Latina trajo como consecuencia una baja y estabilización en los niveles de inflación. Partiendo de la hipótesis de que el pass-through depende positivamente de la inflación, se quiere …
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Certain syndrome or complex conundrum? : the pollination of Erica lanuginosa
The flower of Erica lanuginosa has a tightly closed corolla, held in place by hinged sepals. with a dull reddish-pink colour which makes make it hard to determine a likely pollinator. Rodent trapping and pollen analysis of faecal matter showed it unlikely to be pollinated by a rodent. Flowers …
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Variation in breeding systems and consequences for reproductive traits in Erica
Erica makes up 7% of all species in the Cape flora. It is the most species-rich genus in the Cape Floristic Region (CFR), which has an area 0f 90 000km². Erica species have great inter- and intra-specific variation in floral form as well as in post-fire regeneration strategies. Previous studies of …
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Condicionamientos ambientales de Erica Andevalensis Cabezudo & Rivera : respuesta frente a metales pesados
… contenido en metales de las distintas partes de Erica andevalensis (Cabezudo & Rivera) y se han caracterizado las aguas y los suelos de su entorno. Erica andevalensis es capaz de medrar en un medio extremadamente ácido, con suelos pobres y arenosos, y un elevado contenido en metales pesados, …
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The Prince or the Depauperate? Population Genetics of the Rare, Closed-flower Erica occulta
… remain relatively unknown for Fynbos species. Erica occulta is a rare, dull, closed-flower Erica that is restricted to the few limestone cliffs near Groot Hagelkraal on the Southern Agulhas Plain, South Africa. Its restricted range and small population make it a vulnerable species and …
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Pollination biology of four co-occurring Erica species from the Cape Peninsula, South Africa
… for the largest, florally diverse Cape genus Erica. Speciation studies that focus on pollination biology often use floral syndrome characters to predict a species' functional pollinator group/s. The predictive power of these techniques has come under scrutiny, and hence in-situ observations …
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Rapid marine cyclogenesis forecast sensitivity to high resolution sea surface temperatures during ERICA IOP-5
… Rapidly Intensifying Cyclones over the Atlantic (ERICA). Results show little sensitivity of central pressure and storm position to the high resolution SSTs. However, differences in mesoscale features are present, primarily surface fluxes, precipitation, and frontal circulations.
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The birds, the bees and Erica: vulnerability of plant-pollinator communities in fragmented fynbos landscapes
… parts of the former distribution range of many Erica species. Recent evidence suggests that in the Fynbos biome, small remnants of natural and disturbed vegetation are likely to display depauperate plant communities. In the present study, it was found that Erica species richness declined …
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An investigation of photosynthetic C-fixation in fynbos growth forms and its variation with season and environmental conditions
… were chosen for intensive investigation: Erica plukenetii and Erica hispidula (ericoid element), Thamnochortus lucens and Askidiosperma paniculatum (restioid element), Protea laurifolia and Leucadendron salignum (proteoid element). Metrosideros angustifolia, a shrub of riparian habitats, …
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Can and do Ericas self pollinate?
… by large floral diversity. The genus Erica is one of these lineages, making up -7% of the CFR. Surprisingly, even though pollinators have been suggested to be a driving force of floral morphology, the role of pollinators in the floral diversification and speciation of this genus is not …
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Assessing the environmental risks associated with contaminated sites
… Risk Index for a Complete Assessment (ERICA), merges in a single number the environmental assessment, the human health risk assessment and the uncertainty caused by missing or unreliable data. ERICA uses a scoring system with parameters for the main characteristics of the pollutants. …
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The impacts of habitat fragmentation of Tsitsikamma fynbos, South Africa, on avian nectarivore presence, abundance, and pollination
… rely on them. This study considers how selected erica and protea plants and the sunbirds and sugarbird that pollinate them are affected by fynbos habitat fragmentation. The study was conducted in an area of fragmented Tsitsikamma Plateau Fynbos in the eastern region of the CFR. In Chapter 2, I …
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Aspects of phosphorus nutrition in endomycorrhizal fungi of the Ericaceae
… ponticum L., Calluna vulgaris (L.) Hull, Erica hispidula L., and E. mauritanica L.
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