Explaining the distribution, structure and species composition of snow-patch vegetation in Tasmania, Australia

2016 ◽  
Vol 64 (6) ◽  
pp. 484 ◽  
Author(s):  
Jared Parry ◽  
Jamie B. Kirkpatrick ◽  
Jon Marsden-Smedley
Keyword(s):  
Species Composition ◽  
Environmental Conditions ◽  
Vegetation Cover ◽  
Alpine Vegetation ◽  
Environmental Relationships ◽  
Structural Variability ◽  
North East ◽  
Alpine Zone ◽  
Surrounding Areas ◽  
High Degree

The term ‘snow patch’ indicates an area in an alpine zone with distinct vegetation because snow persists there longer than in the surrounding areas. Snow patches are a well known rare and threatened ecosystem on mainland Australia, but little is known of their distribution and vegetation in Tasmania. We describe, and determine the environmental relationships of, snow patches and their vegetation in Tasmania. There are 119 snow patches in Tasmania, covering 86 ha in toto, 43 of which have some fjaeldmark vegetation and the rest of which have a complete vegetation cover. Snow patches are confined to the taller, more continental mountains where they occur on north-east- to east-facing slopes, with the surrounding alpine vegetation usually being free of persistent snow. Their considerable floristic and structural variability relates to substrate and climate. Within Tasmania, several species are largely restricted to snow patches. The high degree of Tasmanian endemism in the snow-patch vegetation makes it distinct from the snow-patch vegetation of mainland Australia. The Tasmanian snow patches are also distinct in their environmental conditions. In Tasmania, snow does not usually persist over the winter outside the 119 snow patches. There are five floristic communities in these patches, all being distinct from those in mainland Australian snow patches. The Tasmanian snow patches merit listing as a threatened ecosystem on the basis of their distinctiveness and restricted extent.

Environment and Floristics of Ten Australian Alpine Vegetation Formations

1999 ◽  
Vol 47 (1) ◽  
pp. 1 ◽  
Author(s):  
J. B. Kirkpatrick ◽  
K. L. Bridle
Keyword(s):  
Environmental Variables ◽  
Geographic Range ◽  
Previous Literature ◽  
Alpine Vegetation ◽  
Environmental Relationships ◽  
Alpine Zone ◽  
Winter Temperatures ◽  
Summer Temperatures ◽  
Extractable Phosphorus

Data on floristics, structure and environment were collected from quadrats throughout the geographic range of alpine vegetation in Australia. These data were used to explore the floristic and environmental relationships of ten alpine vegetation formations: bolster heath, coniferous heath, heath, alpine sedgeland, fjaeldmark, tall alpine herbfield, short alpine herbfield, grassland, bog and fen. Alpine sedgeland and coniferous heath, and tall alpine herbfield and grassland, proved to be closely similar in their floristics. Grassland and coniferous heath were most separated in ordination space. The environmental variables with the largest numbers of significant differences between formations were extractable phosphorus, summer temperatures, winter temperatures and topography. However, many other edaphic, climatic, topographic and biotic variables were important in discriminating between formations. The results of the formation-environment analyses were largely consistent with the relationships suggested in the previous literature. However, some environmental differences between formations that were observed or posited from local studies did not prove to be exportable to the alpine zone as a whole. Edaphic and topographic variables appear to be more important in discriminating the environments of alpine formations than the environments of alpine floristic communities.

scholarly journals Vegetation Diversity of Screes and Taluses of The Pamir and South-Western Tian Shan in Middle Asia

2021 ◽  
Author(s):  
Arkadiusz Nowak ◽  
Sebastian Świerszcz ◽  
Sylwia Nowak ◽  
Marcin Nobis
Keyword(s):  
Species Composition ◽  
Arid Zone ◽  
Field Studies ◽  
Vegetation Diversity ◽  
Plant Associations ◽  
Middle Asia ◽  
Recent Developments ◽  
Phytosociological Relevés ◽  
High Degree ◽  
Tian Shan

AbstractThis paper presents the results of phytosociological research on scree vegetation of the Pamir and south-western Tian Shan. We collected 222 phytosociological relevés during field studies conducted in 2015–2019, applying the Braun-Blanquet approach. We identified 21 plant communities on mobile and stabilized screes of colluvial cones, aprons and fans, inhabiting mainly the montane and alpine belts in several ranges (e.g. Peter the First, Alichur, Shugnan, Shachdarian, Darvaz, Rushan, Vanch, Fergana, Kyrgyz and Terskey ranges). As a result we provide the first comprehensive hierarchical syntaxonomic synopsis of scree communities at montane and alpine elevations in the eastern Middle Asia. The collected vegetation relevés represent the majority of the variation among the phytocoenoses of gravel, pebble, cobble and rock block slides and screes in the montane and alpine belts. As a result of field studies and Twinspan analyses, nine associations were identified on screes of the Pamir and western Tian Shan. All these communities were assigned to the Sileno brahuicae-Lactucetalia orientalis Nowak et al. 2021. Additionally, within the nitrophilous compact gravel screes one subassociation of Corydalidetum kashgaricae trigonelletosum gontscharovii was distinguished. In the most arid zone two additional plant associations and one subassociation were identified in gravelly semi-deserts zone. The main factors determining the species composition of the studied associations are scree mobility, rock particle size, elevation above sea level and slope inclination. Our research revealed considerable diversity of scree habitats of montane and alpine belts what might be astonishing regarding harsh environment of this mountainous territory. However, a great number of lineages that evolved here and particularly rich species pool of this habitat in Middle Asia facilitate remarkable diversity among vegetation of taluses and screes. The distinctiveness of species composition is additionally enhanced by high degree of endemism of chasmophytic habitats in the eastern part of Middle Asia. Despite recent developments, the prominent chasmophytic vegetation of Middle Asia still needs thorough studies focused on its relationship to semi-desert, tall-forb and petrophytic communities of high mountains of the Pamir, Hindu-Kush, Kunlun and Central Tian Shan.

scholarly journals North Italy: Welcome to the Tropics!

2021 ◽  
Vol 13 (1) ◽  
pp. 215-218
Author(s):  
Federica Veronese ◽  
Francesca Graziola ◽  
Pamela Farinelli ◽  
Elisa Zavattaro ◽  
Vanessa Tarantino ◽  
...  
Keyword(s):  
High Temperatures ◽  
Climate Changes ◽  
Northern Italy ◽  
Larva Migrans ◽  
Cutaneous Larva Migrans ◽  
North East ◽  
The North ◽  
Caucasian Girl ◽  
The Tropics ◽  
High Degree

We describe a case of cutaneous Larva Migrans in an 8-year-old Caucasian girl. The lesion appeared ten days after a bath in the river in a valley in the north-east of Piedmont. The patient was successfully treated with Albendazole 400 mg daily for 5 days. Autochthonous cases are rare, particularly in northern Italy. Probably the high temperatures and the high degree of humidity favored by the climate changes to which Europe is subjected are favorable to the development of larvae. The diagnosis of cutaneous Larva Migrans should, therefore, be considered also in individuals who have not traveled in geographic areas at risk for the climate.

scholarly journals Environmental aspects of relief transformation (Silesian Upland, Southern Poland)

2014 ◽  
Vol 2 (4) ◽  
pp. 13-20 ◽  
Author(s):  
Jolanta Pełka-Gościniak
Keyword(s):  
Human Activity ◽  
Environmental Conditions ◽  
Vegetation Cover ◽  
Soil Cover ◽  
Mineral Resources ◽  
Geological Structure ◽  
Human Being ◽  
Environmental Aspects ◽  
Biological Aspects ◽  
New Habitats

Abstract The geological structure and the occurrence of mineral resources in the Silesian Upland in a significant way influenced the development of industry and caused transformation of every landscape element, among others changes in relief and therefore the formation of anthropogenic landforms. The paper focuses on environmental aspects of relief transformation in the Silesian Upland. The author described aesthetic, geomorphological, hydrological, climatological, pedological and biological aspects on the base of representatives of two groups of landforms–consciously created by human being and being an unintentional effect of human activity (of secondary character). All analysed landforms are new elements in relief, in majority of cases being in disharmony with their neighbourhood. They are alien to the landscape and disturb the equilibrium in the nature. It was proved that they strongly influence water and climatological conditions and soil cover. But sometimes the anthropogenic landforms can be perceived as advantageous for the nature, especially in case of subsidence depressions because of development of aquatic and hydrophilous species and in case of spoil tips due to spontaneous development of vegetation cover. The nature easily adapts to new environmental conditions (process of natural succession and independent introduction of species for new habitats). In these terrains the increase in biodiversity was observed.

scholarly journals Applicability of the dipole-dipole method for structural studies: examples from the Northern Apennines

1998 ◽  
Vol 41 (3) ◽  
Author(s):  
M. Giudici ◽  
L. Alfano
Keyword(s):  
Northern Apennines ◽  
Structural Studies ◽  
Geological Structures ◽  
Vertical Electrical Soundings ◽  
North East ◽  
Field Activity ◽  
Electrical Soundings ◽  
Surrounding Areas

We present some results of a geoelectrical investigation program conducted in the Northern Apennines, namely in the Val d'Aveto and Bobbio window and surrounding areas. Field activity included the execution of more than 50 vertical electrical soundings with continuous polar dipole-dipole spread. We image the geometries of some deep geological structures; in particular we found a resistive background, whose resistivity is different along the geoelectrical profiles. In our interpretation the resistive background consists of subligurid and tuscan units underlying the alloctone Ligurid units in the area surrounding the Val d'Aveto and Bobbio window. The resistive background was not found, at least at the same depths, toward north-east. Therefore, the geoelectrical survey revealed the position of the front of the subligurid and Tuscan nappes toward the plain for a depth of about one kilometer.

scholarly journals Spatial distribution and abundance of the megabenthic fauna community in Gabes gulf (Tunisia, eastern Mediterranean Sea)

2012 ◽  
Vol 13 (1) ◽  
pp. 12 ◽  
Author(s):  
H. EL LAKHRACH ◽  
A. HATTOUR ◽  
O. JARBOUI ◽  
K. ELHASNI ◽  
A.A. RAMOS-ESPLA
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Vegetation Cover ◽  
Eastern Mediterranean ◽  
Ecological Condition ◽  
Eastern Mediterranean Sea ◽  
Bottom Type ◽  
North East ◽  
Starting Point ◽  
Marine Diversity

The aim of this paper is to bring to light the knowledge of marine diversity of invertebrates in Gabes gulf. The spatial distribution of the megabenthic fauna community in Gabes gulf (Tunisia, Eastern Mediterranean Sea), together with the bottom type and vegetation cover, were studied. The abundance of the megabenthic fauna was represented by eight groups: Echinodermata (38%), Crustacea (21%), Tunicata (19%), Mollusca (13%), Porifera (4%), Cnidaria (3%), Bryozoa, and Annelida (2%). It was spatially more concentrated in the coast area of the gulf than in the offshore waters. This area, especially, in Southern Kerkennah, North-est of Gabes and North-east of Djerba appeared to be in a good ecological condition  hosting a variety of species like the paguridsPaguristes eremita and Pagurus cuanensis, the brachyura Medorippe lanata, Inachus doresttensis, the Gastropoda Hexaplex trunculus, Bolinus brandaris, Aporrhais pespelecani, andErosaria turdus, the Bivalvia Fulvia fragilis, the Echinoidea Psammechinus microtuberculatus, Holothuria polii,Ophiothrix fragilis and Antedon mediterranea, and the AscidiaceaAplidium cf. conicum, Didemnum spp, and Microcosmus exasperatus.The species’ compositions of the megabentic fauna community showed clearly that the spatial analysis represented the differences between the community of these two regions (inshore waters and offshore waters). These differences were closely related to peculiar characters of the fauna and biotopes (depth, bottom type and vegetation cover community). The results of the present study should be considered as a necessary starting point for a further analysis of priceless benthic fauna contribution to the marine environment and its organisms.

scholarly journals The inventory of vegetation cover of small river valleys in the north-east of the Samara Region

2021 ◽  
Vol 10 (1) ◽  
pp. 157-162
Author(s):  
Vera Valentinovna Solovieva
Keyword(s):  
Plant Species ◽  
Vegetation Cover ◽  
Higher Plants ◽  
Small River ◽  
Wild Plants ◽  
Small Rivers ◽  
North East ◽  
The North ◽  
The Right ◽  
River Valleys

The study covered 10 small rivers in the North-Eastern part of the Samara Volga region. The author studied the vegetation cover, which is understood as a set of phytocoenoses and their constituent plant species. On the territory of Pokhvistnevsky District, there are two groups of river valleys that are heterogeneous in geobotanical terms. The first group includes the rivers with forested valleys (Kutlugush, Murakla, Karmalka). Their slopes are more or less symmetrical and steep. The vegetation cover of an undeveloped floodplain is usually uniform, and there is usually no belt. The valleys of the second group are treeless; their slopes are sharply asymmetrical (Amanak, Tergala, Talkish). The right-bank tributary of the Maly Kinel River the Lozovka River with its length of 20 km and the left tributary Kuvayka River with its length of 16 km were studied on the territory of Kinel-Cherkassky District. The Padovka and Zaprudka rivers and the right tributaries of the Bolshoi Kinel River (Kinelsky District) were also studied. The most common associations are (Salix fragilis heteroherbosa, Scirpus sylvaticus purum, Agrostis stolonifera Amoria repens, Elytrigia repens + Poa angustifolia heteroherbosa). In total, 19 types of phytocoenoses were noted, 4 of them are found in half of the studied rivers. In the plant communities of small river valleys there are 232 species of higher wild plants, which belong to 139 genera from 48 families. This is 60% of the total number of higher plants registered in the flora of small river valleys of the Samara Region. Rare protected plant species are registered here: Adonis volgensis Steven ex DC., Cacalia hastata L., Delphinium cuneatum Stev. ex DC., Globularia punctata Lapeyr.

scholarly journals Ecological and Geographical distribution of species and genera of Primulaceae in Iraq

2014 ◽  
Vol 11 (2) ◽  
pp. 829-840
Author(s):  
Baghdad Science Journal
Keyword(s):  
Geographical Distribution ◽  
Environmental Conditions ◽  
North East ◽  
The North ◽  
East And West ◽  
Prevalent Species

The present research deal with ecological and geographical distribution of species and genera of Primulaceae in Iraq. The results were revealed that species distributed in the north , north-east and west of Iraq. Anagallis arvensis L. is the most prevalent species tolerant to different environmental conditions, while the species of Primula L. characterized as less widespread and limited in one District. In addition, the districts Rawanduz (MRO) and Sulaymaniyah (MSU) have ranked first in distribution of the species on geographical districts with (75%), while the districts southern desert (DSD) and Basra (LBA) in last place with (16.7%). Maps for geographical distribution for all species were illustrated.

COMPARISON ESTIMATION OF A POTATOES HYBRIDS IN ECOLOGICAL TEST

1970 ◽  
pp. 25-27
Author(s):  
O. N. Bashlakova ◽  
N. F. Sintsova
Keyword(s):  
Late Blight ◽  
Potato Variety ◽  
Selection Process ◽  
New Potato Variety ◽  
North East ◽  
The North ◽  
Federal Research ◽  
Breeding Station ◽  
Final Yield ◽  
High Degree

The research was carried out in 2017-2019 at the experimental field of the North-east Federal Research Center in the nursery of ecological testing of promising potato hybrids. The aim of the study was to identify hybrids for creating a new potato variety with high early productivity and final yield, attractive appearance of tubers and a high degree of resistance to major potato diseases. As the object of research 8 potato hybrids created at the Falenskaya breeding station — FGBNU FANC of the North-East were used: 27-07 (165-00 x 282-97), 62-08 (9326-2 x Zhukovsky early), 90-09 (194-00 x 45-7-17), 109-11 (183-05 x Dina), 170-08 (Sierra x 93.14-99), 172-11 (59-6-33 x Lazar), 179-10 (Dina x 45-7-17), 455-08 (591m-62 x Dubrava). As a standard was used the Nevsky potato variety zoned in the territory of the Kirov region. The evaluation of potato hybrids was carried out according to the guidelines for the technology of potato selection process: phenological observations, plant productivity on the 65th day from planting, final yield. The numbers 90-09, 170-08 and 179-10 with an early yield of 16.4-17.2 t/ha, an adaptability coefficient higher than 1 and a high degree of resistance to late blight were distinguished by the set of features.

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