Vascular plant colonisation of four castles in southern Italy: Effects of substrate bioreceptivity, local environment factors and current management

2018 ◽  
Vol 133 ◽  
pp. 26-33 ◽  
Author(s):  
Riccardo Motti ◽  
Giuliano Bonanomi
Keyword(s):  
Southern Italy ◽  
Vascular Plant ◽  
Local Environment ◽  
Current Management ◽  
Environment Factors ◽  
Plant Colonisation

scholarly journals Cost-efficient factors in local public spending: Detecting relationships between local environments, population size and urban area category

2021 ◽  
pp. 239980832110038
Author(s):  
Hiroki Baba ◽  
Yasushi Asami
Keyword(s):  
Population Size ◽  
Urban Area ◽  
Urban Areas ◽  
Local Governments ◽  
Statistical Significance ◽  
Population Decline ◽  
Public Spending ◽  
Local Environment ◽  
Environment Factors ◽  
Major Factors

This study examines regional differences in local environment factors to better understand the sustainability of local governments indexed by per capita public spending. Under the condition of heterogeneous population size, we examine how factor characteristics differ depending on the spatial context represented by the urban area category. By employing a Cobb–Douglas cost function with congestion effects on public service provision, the estimated factors enable us to articulate major factors and differences in cost-efficiency between urban area categories. We found that statistical significance and even the signatures of local environment factors differ depending on the urban employment area category. Regarding factors such as the ratios of employees in secondary and tertiary industries, these did not tend to be statistically significant in small-sized urban areas, while small-sized cities in large-sized urban areas were likely to gain confidence intervals. Moreover, we did not observe any statistical significance for the ratio of elderly people due to the balance of spending between national and local governments. These findings could contribute to sustainable management of cities in the advent of population decline.

Return of the megaherbs: plant colonisation of derelict ANARE station buildings on sub-Antarctic Heard Island

Polar Record ◽  
2004 ◽  
Vol 40 (3) ◽  
pp. 235-243 ◽  
Author(s):  
J. Whinam ◽  
P.M. Selkirk ◽  
A.J. Downing ◽  
Bruce Hull
Keyword(s):  
Plant Species ◽  
Vascular Plants ◽  
Vascular Plant ◽  
Water Tank ◽  
Moss Species ◽  
Left Behind ◽  
Plant Colonisation ◽  
Vascular Plant Species ◽  
Heard Island ◽  
Antarctic Research

Buildings were constructed and artefacts left behind on sub-Antarctic Heard Island, associated with Antarctic research expeditions since 1926. Both bryophytes and vascular plants are colonising many parts of the now derelict buildings. On these structures and artefacts, the authors recorded four species of vascular plants out of the 11 that occur on Heard Island and nine species of mosses out of the 37 recorded from Heard Island. The vascular plant species most frequently recorded colonising structures and artefacts was Pringlea antiscorbutica (288 occurrences), with the area colonised varying from 0.3 cm2 to 430.0 cm2. Muelleriella crassifolia was the moss species that was most frequently recorded (14 occurrences), colonising areas from 2.1 cm2 to 12.9 cm2. The highest number of bryophyte species (seven) was recorded on the stone and cement of the ‘water tank.’ Pringlea antiscorbutica, Poa cookii, Azorella selago, Muelleriella crassifolia, Bryum dichotomum, Dicranoweisia brevipes and Schistidium apocarpum are all expected to continue to colonise the ANARE ruins, as well as areas that have become available since building removal and also possibly areas bared by further deglaciation.

scholarly journals Vascular plant colonisation of Surtsey Island (1965-1990) - a dataset

2020 ◽  
Vol 8 ◽  
Author(s):  
Pawel Wasowicz ◽  
Sally Thorsteinsson ◽  
Borgþór Magnússon ◽  
Eyþór Einarsson ◽  
Valgeir Bjarnason ◽  
...  
Keyword(s):  
Primary Succession ◽  
Vascular Plant ◽  
Field Studies ◽  
Plant Distribution ◽  
Distribution Data ◽  
Plant Colonisation ◽  
Unique Event ◽  
Volcanic Islands ◽  
Colonisation Dynamics ◽  
Succession Processes

The process of ecosystem development over time that takes place on a new substrate devoid of biological activity (such as, for example, lava) is called primary succession. Research on primary succession is not easy, as it is limited to rare occasions when a piece of land totally lacking in any pre-existing life occurs. The emergence of volcanic islands is such an occasion; it is a unique event that allows a natural experiment in the study of colonisation processes and primary succession. Surtsey (located in the Vestmannaeyar archipelago off the southern coast of Iceland) is an iconic example of a place where primary succession has been studied for decades and where human disturbance has been minimised due to significant geographic isolation and early protection efforts. Here, we present a georeferenced dataset of vacular plant occurrences collected during the field studies carried out on Surtsey Island during the first three decades of its existence. To date, no dataset containing plant distribution data documenting the process of early stages of colonisation of Surtsey has been published. What is more, to our knowledge, there is no other dataset that can be compared with our Surtsey data that is readily available for researchers working on plant colonisation dynamics and primary succession processes. Here, we present a complete, geo-referenced dataset of all plant occurrences (10,094 in total) collected on Surtsey between 1965 and 1990.

scholarly journals Could Southern Italians Cooperate? Banche Popolari in the Mezzogiorno

2000 ◽  
Vol 60 (1) ◽  
pp. 67-93 ◽  
Author(s):  
Brian A 'Hearn
Keyword(s):  
Southern Italy ◽  
Local Environment ◽  
Late Nineteenth Century ◽  
Historical Evidence ◽  
Robert Putnam ◽  
Cooperative Banks ◽  
Late Nineteenth ◽  
And Performance ◽  
North And South

Recent work by Robert Putnam has revived a contentious debate about the role of culture in Italian regional disparities. Southern Italy is argued to have been locked in an impoverishing, no-trust equilibrium. This article explores an apparent exception to Putnam's historical evidence: the South's late-nineteenth-century cooperative banks (banche popolari). Econometric investigation reveals important differences in the strategy and performance of these banks in North and South during the crucial decade of the 1890s, and shows that these differences cannot be attributed to differences in the local environment. In fact, the evidence is broadly consistent with Putnam's hypothesis.

scholarly journals Mathematical contributions to the theory of evolution.―On homotyposis in homologous but differentiated organs

1903 ◽  
Vol 71 (467-476) ◽  
pp. 288-313 ◽  
Keyword(s):  
Local Environment ◽  
Average Intensity ◽  
Animal Life ◽  
Environment Factors ◽  
Theory Of Evolution ◽  
Average Value ◽  
Vegetable Kingdom

(1.) In the paper on “Homotyposis in the Vegetable Kingdom,” I defined homotypes as "undifferentiated like organs.” In the course of that paper, I endeavoured to indicate that I was not unconscious of the influence of age, local environment, and position upon organism in modifying homotypic correlation. The object of my memoir, however, was to obtain some general appreciation of the average intensity of individuality in living forms, and to see if it approached the average value of fraternal heredity in plant or animal life. For this purpose I selected such material as was readily available, indicating the series where I thought differentiation of a sensible amount was present owing to the age, the situation, or the environment factors.

scholarly journals Vascular flora of eight water reservoir areas in southern Italy

Check List ◽  
2015 ◽  
Vol 11 (2) ◽  
pp. 1593 ◽  
Author(s):  
Antonio Croce
Keyword(s):  
Nature Conservation ◽  
Alien Species ◽  
Plant Diversity ◽  
Southern Italy ◽  
Vascular Plant ◽  
Water Reservoir ◽  
Water Bodies ◽  
Vascular Flora ◽  
Vascular Plant Diversity ◽  
Surrounding Areas

Artificial lakes play an important role in maintaining the valuable biodiversity linked to water bodies and related habitats. The vascular plant diversity of eight reservoirs and surrounding areas in southern Italy was inventoried and further analysed in terms of biodiversity. A total of 730 specific and subspecific taxa were recorded, with 179 taxa in the poorest area and 303 in the richest one. The results indicate a good richness of the habitats surrounding the water basins, with some species of nature conservation interest and only a few alien species.

Residual Gas Reaction in the Electron Microscope: II The Design of a Gas-Control Chamber for Quantitative Observations

1969 ◽  
Vol 27 ◽  
pp. 82-83
Author(s):  
Chester J. Calbick ◽  
Richard E. Hartman
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Local Environment ◽  
Chamber Pressure ◽  
Objective Lens ◽  
Ion Pump ◽  
Quantitative Studies ◽  
Precise Knowledge ◽  
Differential Pumping ◽  
And Control

Quantitative studies of the phenomenon associated with reactions induced by the electron beam between specimens and gases present in the electron microscope require precise knowledge and control of the local environment experienced by the portion of the specimen in the electron beam. Because of outgassing phenomena, the environment at the irradiated portion of the specimen is very different from that in any place where gas pressures and compositions can be measured. We have found that differential pumping of the specimen chamber by a 4" Orb-Ion pump, following roughing by a zeolite sorption pump, can produce a specimen-chamber pressure 100- to 1000-fold less than that in the region below the objective lens.

An emerging technology: Nuclear magnetic resonance microscopy

1988 ◽  
Vol 46 ◽  
pp. 1000-1001
Author(s):  
M.J. Hennessy ◽  
E. Kwok
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Relaxation Times ◽  
Basic Research ◽  
Local Environment ◽  
Magnetic Resonance Images ◽  
Nmr Microscopy ◽  
Mri Scans ◽  
Temperature Relaxation ◽  
Nuclear Magnetic

Much progress in nuclear magnetic resonance microscope has been made in the last few years as a result of improved instrumentation and techniques being made available through basic research in magnetic resonance imaging (MRI) technologies for medicine. Nuclear magnetic resonance (NMR) was first observed in the hydrogen nucleus in water by Bloch, Purcell and Pound over 40 years ago. Today, in medicine, virtually all commercial MRI scans are made of water bound in tissue. This is also true for NMR microscopy, which has focussed mainly on biological applications. The reason water is the favored molecule for NMR is because water is,the most abundant molecule in biology. It is also the most NMR sensitive having the largest nuclear magnetic moment and having reasonable room temperature relaxation times (from 10 ms to 3 sec). The contrast seen in magnetic resonance images is due mostly to distribution of water relaxation times in sample which are extremely sensitive to the local environment.

Electron energy-loss near-edge structure in silicate minerals

1992 ◽  
Vol 50 (2) ◽  
pp. 1258-1259
Author(s):  
D W McComb ◽  
R S Payne ◽  
P L Hansen ◽  
R Brydson
Keyword(s):  
Solid State ◽  
Energy Loss ◽  
Electron Energy ◽  
State Energy ◽  
Local Environment ◽  
Edge Structure ◽  
Silicate Minerals ◽  
Two Samples ◽  
Electron Energy Loss ◽  
Careful Processing

Electron energy-loss near-edge structure (ELNES) is an effective probe of the local geometrical and electronic environment around particular atomic species in the solid state. Energy-loss spectra from several silicate minerals were mostly acquired using a VG HB501 STEM fitted with a parallel detector. Typically a collection angle of ≈8mrad was used, and an energy resolution of ≈0.5eV was achieved.Other authors have indicated that the ELNES of the Si L2,3-edge in α-quartz is dominated by the local environment of the silicon atom i.e. the SiO4 tetrahedron. On this basis, and from results on other minerals, the concept of a coordination fingerprint for certain atoms in minerals has been proposed. The concept is useful in some cases, illustrated here using results from a study of the Al2SiO5 polymorphs (Fig.l). The Al L2,3-edge of kyanite, which contains only 6-coordinate Al, is easily distinguished from andalusite (5- & 6-coordinate Al) and sillimanite (4- & 6-coordinate Al). At the Al K-edge even the latter two samples exhibit differences; with careful processing, the fingerprint for 4-, 5- and 6-coordinate aluminium may be obtained.

Sign in / Sign up

Export Citation Format

Share Document