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1999, Journal of Ecology
2007 •
Journal of Bryology
An important area for Orthotrichum consimile Mitt. in Europe: the north-western Iberian Peninsula1997 •
2017 •
Applied Vegetation Science
Diversity of native and alien vascular plant species of dry grasslands in central Europe2008 •
Question: Which factors determine diversity of native and alien vascular plant species in semi-natural dry grasslands?Location: Northern limestone Alps to the southern rim of the Bohemian massif in northern Austria.Methods: In 70 randomly chosen dry grassland patches (0.008 ha - 7 ha) we sampled a complete inventory of vascular plant species at each site. We analysed the correlation between species diversity of natives, archaeophytes (pre-1500 aliens) and neophytes (post-1500 aliens). We used GLM to study the relationship of species number (natives, neophytes, archaeophytes) to five explanatory variables (altitude, within habitat diversity, habitat diversity of adjacent areas, within land-use diversity and land-use in adjacent areas). Orthogonal components of these variables were derived with a PCA and used in the models. We also tested the influence of minimum residence time (MRT) and the covariables origin, mode of introduction and life form on the number of grassland sites with neophytes with analogous GLMs.Results: Native species diversity species was positively correlated with the species diversity of new, but not old invaders. GLM explains 70% of the variance in the number of native species. Patch size explained the largest part of the variation in the number of native species. PCA axes 1 and 3 were significantly related to the number of native species. Axis 1was related to on-site habitat and land-use diversity. The GLM of the archaeophyte diversity explains 18% of the variance. Altitude and presence of fields and grassland in the neighbourhood mainly explained archaeophyte species diversity. The GLM of neophyte diversity explains 12% of the variance. The number of neophytes was positively related to that of archaeophytes. Only PCA axis 3, which is mainly influenced by adjacent land-use types, showed a relationship with neophytes. MRT, mode of introduction and region of origin (but not life form) were significantly related to the number of grassland sites invaded by neophytes, explaining 35% of the variance.Conclusion: Most factors governing native species diversity are not significantly related to alien species diversity. Additional determinants of the local scale diversity of alien species exist such as region of origin and historical factors (MRT, mode of introduction).
1990 •
Journal of Ecology
Biological Flora of the British Isles: Crataegus laevigata2021 •
1. This account presents information on all aspects of the biology of Crataegus laevigata (Poir.) DC (Midland hawthorn) (C. oxyacanthoides Thuill.) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment , structure and physiology, phenology, floral and seed characters, herbi-vores and disease, history and conservation. 2. Crataegus laevigata is primarily a shade-tolerant shrub or small tree up to 12-m tall of ancient woodlands (of which it is an indicator plant) and occasionally old hedges, usually on heavy clay soils and avoiding limestone and chalk. It is native to central and northern Europe and in the British Isles is native to southeast England, occurring naturally up to the Midlands, hence the common name. It is largely absent naturally from Scotland, Wales and Ireland. 3. Flowers usually have two styles, varying from (rarely) 1 to 5 with an equal number of pyrenes in the fruit, differentiating it from C. monogyna with usually one style and pyrene. Pollination is by insects and fruit are dispersed primarily by birds. Fruit has traditionally been used for food, and with the leaves and flowers have a long tradition in herbal medicine. 4. Disturbance and fragmentation have allowed C. monogyna to permeate into old woodlands and hybridise with C. laevigata. These two species are inter-fertile and barriers to hybridisation are primarily spatial separation thus allowing extensive introgression such that in many parts of Europe, pure C. laevigata is becoming scarce. K E Y W O R D S conservation, geographical and altitudinal distribution, germination, mycorrhiza, parasites and diseases, pharmaceuticals, reproductive biology, soils
1998 •
International Journal of Energy Economics and Policy
Electricity Consumption and Manufacturing Sector Performance: Evidence from NigeriaAdvances in Natural Sciences: Nanoscience and Nanotechnology
Effect of coating mild steel with CNTs on its mechanical properties and corrosion behaviour in acidic medium2017 •
The Journal of Clinical Endocrinology & Metabolism
Pituitary Irradiation Is Ineffective in Normalizing Plasma Insulin-Like Growth Factor I in Patients with Acromegaly11997 •
2021 •
Chemischer Informationsdienst
ChemInform Abstract: NITROGEN VS. OXYGEN BINDING IN METAL COMPLEXES OF ARYLNITROSO LIGANDS. CRYSTAL AND MOLECULAR STRUCTURE O DICHLOROBIS(4-NITROSO-N,N-DIMETHYLANILINE)COBALT(II)1979 •
American Journal of Obstetrics and Gynecology
Magnesium sulfate (MGS04) tocolysis versus no tocolysis in women with preterm labor between 32 0/7 and 34 6/7 weeks of gestation: A randomized controlled trial2005 •
2018 •
Journal of Computational and Graphical Statistics
The Visual Design and Control of Trellis Display1996 •
2020 •
Physical review letters
B_{1g}-Phonon Anomaly Driven by Fermi Surface Instability at Intermediate Temperature in YBa_{2}Cu_{3}O_{7-δ}2021 •
2017 •
Sportske Nauke i Zdravlje
Učestalost i efikasnost ubacivanja lopte u igru sa strane u savremenom fudbalu // Frequency and Efficiency of Putting the Ball Into Play From the Side in Modern Football2014 •
Nucleation and Atmospheric Aerosols
The performance of robust multivariate regression in simultaneous dependence of variables in linear models2014 •
Journal of Korea Water Resources Association
Rainfall Variations of Temporal Characteristics of Korea Using Rainfall Indicators2012 •
Solar Energy and Sustainable Development Journal
Effct of Full Implementation of Domestic Solar Water Heaters on the Electricity Peak Load in Libya2016 •
Metals
Microstructure and Mechanical Properties of Sintered and Heat-Treated HfNbTaTiZr High Entropy Alloy2019 •
2015 •
May God Remember - Memory and Memorializing in Judaism
Remembering Abraham Geiger2013 •
Archives of Physical Medicine and Rehabilitation
Cardiac Rehabilitation After Heart Transplantation in a Patient With Becker’s Muscular Dystrophy: A Case Report2005 •
2017 •