scholarly journals The species range‐size patterns for vascular plants of Seorak Mountain (Korea): Relationship between group of life forms and phytogeography affinity along the elevational gradient

2021 ◽  
Vol 11 (18) ◽  
pp. 12872-12881
Author(s):  
Mi‐Hyun Lee ◽  
Ju Hyeon Song ◽  
Seong Yeob Byeon ◽  
Jeong Eun Lee ◽  
Ho Jin Kim ◽  
...  
Keyword(s):  
Vascular Plants ◽  
Elevational Gradient ◽  
Life Forms ◽  
Range Size ◽  
Species Range

scholarly journals Plant Diversity and Composition Changes along an Altitudinal Gradient in the Isolated Volcano Sumaco in the Ecuadorian Amazon

Diversity ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 229
Author(s):  
Pablo Lozano ◽  
Omar Cabrera ◽  
Gwendolyn Peyre ◽  
Antoine Cleef ◽  
Theofilos Toulkeridis
Keyword(s):  
Vascular Plants ◽  
Amazon Basin ◽  
Life Form ◽  
Species Turnover ◽  
Elevational Gradient ◽  
Active Volcano ◽  
Life Forms ◽  
Ecuadorian Amazon ◽  
Nmds Analysis ◽  
Composition Changes

The paramo is a unique and severely threatened ecosystem scattered in the high northern Andes of South America. However, several further, extra-Andean paramos exist, of which a particular case is situated on the active volcano Sumaco, in the northwestern Amazon Basin of Ecuador. We have set an elevational gradient of 600 m (3200–3800 m a.s.l.) and sampled a total of 21 vegetation plots, using the phytosociological method. All vascular plants encountered were typified by their taxonomy, life form and phytogeographic origin. In order to determine if plots may be ensembled into vegetation units and understand what the main environmental factors shaping this pattern are, a non-metric multidimensional scaling (NMDS) analysis was performed. In addition, species turnover was quantified in order to appreciate the quantity and sort of species which are responsible for the similarity or dissimilarity between vegetation units. Therefore, a SIMPER similarity percentage analysis was conducted. We encountered 68 plant species belonging to 54 genera and 31 families, of which three are Ecuadorian endemics. The most frequent life forms were erect herbs, rosette and tussocks, whereas the least were cushions. At genus level, 44% of the Sumaco paramo flora was of tropical origin, followed by temperate (33%) and finally cosmopolitan (22%). The neotropical montane element was the most represented with 15 species, followed by the Austral-Antarctic with ten, wide temperate with another ten and cosmopolitan with seven. Regarding vegetation, four floristically distinct groups were segregated being lower gradient (3250–3500 m a.s.l.) and high altitude (3500–3800 m a.s.l.)

scholarly journals Floristic, frequency, and vegetation life-form spectra of a cerrado site

2004 ◽  
Vol 64 (2) ◽  
pp. 201-209 ◽  
Author(s):  
M. A. Batalha ◽  
F. R. Martins
Keyword(s):  
Frequency Spectrum ◽  
Vascular Plants ◽  
Life Form ◽  
Quantitative Description ◽  
Life Forms ◽  
Sensu Stricto ◽  
Southeastern Brazil ◽  
Frequency Spectra ◽  
Experimental Station ◽  
Normal Spectrum

We used Raunkiaer's system to classify in life-forms the vascular plants present in 12 random 25 m² quadrats of a cerrado site. The study area is covered by cerrado sensu stricto and is located in the Valério fragment, at about 22º13'S and 47º51'W, 760 m above sea level, in the Itirapina Ecological and Experimental Station, São Paulo State, southeastern Brazil. The floristic spectrum considers the life-form of each species, while in the frequency spectrum, each species is weighted by its frequency. The vegetation spectrum does not consider the species at all, but only the individuals in each life-form class. In the floristic spectrum, the most represented life-forms were the phanerophytes and the hemicryptophytes, as in other cerrado sites. This spectrum differed significantly from Raunkiaer's normal spectrum, mainly due to under-representation of therophytes and over-representation of phanerophytes. The floristic and frequency spectra were similar, but both differed from the vegetation spectrum. We recommend the floristic spectrum when working at larger scales and a description of the phytoclimate is wanted. The vegetation spectrum is preferable when working at smaller scales and wanting a quantitative description of the physiognomy. The frequency spectrum is not recommended at all.

scholarly journals InBUy database of Invasive and Alien Species (IAS) in Uruguay: a useful tool to confront this threat to biodiversity

2010 ◽  
Vol 10 (4) ◽  
pp. 205-213 ◽  
Author(s):  
Silvana Masciadri ◽  
Ernesto Brugnoli ◽  
Pablo Muniz
Keyword(s):  
Vascular Plants ◽  
Prevention And Control ◽  
Life Forms ◽  
The World ◽  
Time Periods ◽  
Negative Impacts ◽  
Managed Ecosystems ◽  
Taxonomic Groups ◽  
And Control ◽  
Trees And Shrubs

In Uruguay, as well as in other regions of the world, IAS cause negative impacts on natural and managed ecosystems. The use of databases is a helpful tool to elaborate different strategies for prevention and control, and to develop policies and scientific analyses related to IAS. The database of IAS in Uruguay (InBUy) was developed during two time periods (2006-2007 and 2009-2010). It currently contains information on 33 specialists of different taxonomic groups, 14 research projects, 185 references, 351 species and 4,715 records, with vascular plants having both the highest number of species and records. Among vascular plants, herbaceous life forms are the most strongly represented, followed by trees and shrubs. Within animals, the fishes and mollusks are the most important groups. Analysis of the native distribution areas of IAS showed that most are indigenous from Europe, followed by Asia and Oceania. Data showed that introductions of IAS into Uruguay are mainly intentional (67%), so efforts should be focused on policies and rules in order to control the entrance of exotic organisms and prevent new invasions. The geography of the compiled dataset shows the main impact is along the coastline, where the highest exotic species richness and records occurs, and also the most biological invasions. The InBUy database is up-to-date and has successfully contributed to the creation of an official IAS list for Uruguay and both a National and a Coastal Geographic Information System. It has also been used for developing consciousness about this important threat to biodiversity, at both national and regional scales.

Area-corrected species richness patterns of vascular plants along a tropical elevational gradient

2017 ◽  
Vol 14 (4) ◽  
pp. 694-704
Author(s):  
Xiang Xu ◽  
Hua-yong Zhang ◽  
Jian Luo ◽  
Dong-jie Zhang ◽  
Athen Ma
Keyword(s):  
Species Richness ◽  
Vascular Plants ◽  
Elevational Gradient ◽  
Richness Patterns

Phylogenetic conservatism of species range size is the combined outcome of phylogeny and environmental stability

2017 ◽  
Vol 44 (11) ◽  
pp. 2451-2462 ◽  
Author(s):  
Axelle Zacaï ◽  
Emmanuel Fara ◽  
Arnaud Brayard ◽  
Rémi Laffont ◽  
Jean-Louis Dommergues ◽  
...  
Keyword(s):  
Range Size ◽  
Species Range ◽  
Environmental Stability ◽  
Phylogenetic Conservatism
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