scholarly journals Competitive, stress-tolerant and ruderal based classification of some plant species in an Alpine community of the Giresun Mountains in Turkey

2017 ◽  
Vol 38 (5) ◽  
pp. 761-769 ◽  
Author(s):  
R. Huseyinoglu ◽  
◽  
E. Yalcin ◽  
Keyword(s):  
Plant Species

scholarly journals Madrigueras de Liomys pictus en dos selvas tropicales del Pacífico mexicano.

2009 ◽  
Vol 13 (1) ◽  
pp. 63 ◽  
Author(s):  
Yolanda Domínguez-Castellanos ◽  
Beatriz Hernandez Meza ◽  
Angeles Mendoza D. ◽  
Gerardo Ceballos González
Keyword(s):  
Seed Production ◽  
Tropical Forests ◽  
Plant Species ◽  
Deciduous Forest ◽  
Vegetation Type ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Mexican Pacific ◽  
La Selva

Resumen: Se determinó la estructura y el contenido de las madrigueras de Liomys pictus por tipo de vegetación y temporada del año, en dos selvas tropicales del Pacífico Mexicano. Se encontraron 24 madrigueras: en la selva baja la mayoría son complejas, mientras que  en la selva mediana son lineales, por consiguiente y de acuerdo a la clasificación de las madrigueras, en selva baja se presentaron madrigueras múltiples y en selva mediana madrigueras simples. De acuerdo al contenido, las de selva baja tienen en promedio una mayor cantidad de materiales en comparación a las de selva mediana. Se catalogaron un total de 248 especies de plantas de estas 50 se comparten en ambos sitios, del total de las especies se llegaron a identificar sólo 77. Las familias más representativas fueron Leguminoseae, Euphorbiaceae y Convolvulaceae. La estructura de las madrigueras no esta determinada por la temporalidad, sin embargo el contenido esta determinado con la cantidad de material almacenado aunque la producción de semillas esta definido por el patrón de fructificación que esta dado a lo largo del año.Palabras clave: Madrigueras, estructura, contenido, Liomys pictus, Jalisco, México.Abstract: We determined the structure and contents of burrows of Liomys pictus by vegetation type and season in two tropical forests of the Mexican Pacific. 24 burrows were found in the tropical dry forest and most complex, in the semi deciduous forest is linear, and therefore according to the classification of the burrows in the tropical dry forest are more numerous and simple in the semi deciduous forest. According to the content, of the tropical dry forest have on average a greater amount of material compared to the semi deciduous forest. Were categorized a total of 248 plant species of these 50 sites are shared in both the total number of species is to determine 77. The most representative families were Leguminoseae, Euphorbiaceae and Convulvolaceae. The structure of the burrows is not affected by the timing, but the content is determined with the amount of stored material but seed production is defined by the pattern of fruit that is given throughout the year.Key words: Burrows, structure, food hoarding, Liomys pictus, Jalisco, Mexico.

scholarly journals Image-based classification of plant genus and family for trained and untrained plant species

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Marco Seeland ◽  
Michael Rzanny ◽  
David Boho ◽  
Jana Wäldchen ◽  
Patrick Mäder
Keyword(s):  
Plant Species

scholarly journals Categorizing threatened species: an analysis of the Red List of the flora of Brazil

Oryx ◽  
2014 ◽  
Vol 48 (2) ◽  
pp. 258-265 ◽  
Author(s):  
M. A. Moraes ◽  
R.A.X. Borges ◽  
E. M. Martins ◽  
R. A. Fernandes ◽  
T. Messina ◽  
...  
Keyword(s):  
Plant Species ◽  
Extinction Risk ◽  
Conservation Status ◽  
National Level ◽  
Individual Species ◽  
Species List ◽  
Regulatory Processes ◽  
Threatened Plant Species ◽  
Available Information

AbstractIn Brazil most of the effort for the conservation of plant species has comprised evaluation of taxa for the Lista Oficial das Espécies Ameaçadas de Extinção da Flora Brasileira (Official Threatened Flora Species List), and little has been done to conserve individual species. This is a result of the listing process being interpreted as the final goal rather than as a means to achieve conservation effectiveness. In addition, a variety of systems for the classification of extinction risk have been applied, resulting in an inaccurate view of the conservation status of the flora of the country. Here we review the national listing process to highlight the strengths and weaknesses of the Official Threatened Flora Species List. We used all available information to compile a list of taxa officially recorded as threatened in Brazil. The list was revised using the Flora do Brasil database. The resulting list has 4,967 taxa in 1,235 genera and 232 families. Despite controversies about advances in the Red Listing process, several improvements have been made at the institutional level, such as: (1) improving conservation databases, (2) developing information systems, and (3) increasing the number of taxonomists working in conservation biology. However, there is still no classification system for extinction risk that facilitates standardization of the listing process at the national level. In addition, regulatory processes related to the conservation of threatened plant species are not up-to-date with the conceptual and methodological advances made by the scientific community. We conclude that adjustments are needed to ensure the effectiveness of the conservation of plant species in Brazil.

scholarly journals Kalahari vegetation: veld condition trends and ecological status of species

Koedoe ◽  
1991 ◽  
Vol 34 (1) ◽  
Author(s):  
N. Van Rooyen ◽  
G.J. Bredenkamp ◽  
G.K. Theron
Keyword(s):  
Species Composition ◽  
Plant Species ◽  
National Park ◽  
Ecological Status ◽  
Grazing Intensity ◽  
Sampling Period ◽  
River Terrace ◽  
River Bed

Grazing intensity gradients were determined in the duneveld, river terrace and river bed habitats of the Kalahari Gemsbok National Park. Under increased grazing, a species composition characterised mostly by annual forbs and grasses results. In all three habitats the relatively heavily grazed areas were closest to the watering points, although this was less evident in the river terrace and river bed habitats. Monitoring degradation at a watering point over the long term, produced results similar to those observed from a single sampling period. The identification of grazing gradients within homogeneous habitats, is a prerequisite for the classification of plant species into different categories. The allocation of a species to a category is based on the changes in frequency along this grazing gradient and this approach is more acceptable than the classification of species commonly used. The use of terminology such as Decreasers and Increasers is discussed.

Classification of plant species from images of overlapping leaves

2015 ◽  
Vol 118 ◽  
pp. 186-192 ◽  
Author(s):  
Tapio Pahikkala ◽  
Kim Kari ◽  
Heta Mattila ◽  
Anna Lepistö ◽  
Jukka Teuhola ◽  
...  
Keyword(s):  
Plant Species

scholarly journals Origins of Alien Species and Plant Invasion in India as Tapped from Kurma Purana

2021 ◽  
Vol 4 (3) ◽  
pp. 137-142
Author(s):  
Dinkarrao Amrutrao Patil
Keyword(s):  
Alien Species ◽  
Plant Species ◽  
Plant Invasion ◽  
Indian Territory ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Plant Names ◽  
Literary Heritage

Ancient Sanskrit Puranas are literary heritage of India. They are studied from different perspectives but appeared largely neglected from the viewpoint of plant invasion in Indian territory. The present attempt dealt with the alien plant species as encoded in Sanskrit plant names in various verses of Kurma Purana. As many as 24 alien plant species belong to 23 genera of 16 families of angiosperms. They are analysed carefully floristically, habital categories and status regarding cultivation or naturalization. They are also studied for their nativity consulting relevant taxonomic literature. The data indirectly also indicated about utilities and awareness about classification of plants based on habits. Such investigations are warranted for better understanding of the development of natural wealth in past.

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