نتایج جستجو برای: floristic composition

تعداد نتایج: 261466  

Journal: رستنیها 2007
A.R. NAQINEZHAD, M. FARIDI M. NOROOZI SH. SAEIDI MEHRVARZ,

Boujagh National Park is the first founded land-marine national park in Iran and the first national park in Gilan Province, N. Iran. This area is a critical refuge for a lot of migratory birds and so many valuable coastal flora and fauna. The present study revealed that, the flora of this area comprises 248 vascular plants and 10 bryophytes out of which six taxa are endemic for the flora of Ira...

2011
Mark A Higgins Kalle Ruokolainen Hanna Tuomisto Nelly Llerena Glenda Cardenas Oliver L Phillips Rodolfo Vásquez Matti Räsänen

AIM: Conservation and land-use planning require accurate maps of patterns in species composition and an understanding of the factors that control them. Substantial doubt exists, however, about the existence and determinants of large-area floristic divisions in Amazonia. Here we ask whether Amazonian forests are partitioned into broad-scale floristic units on the basis of geological formations a...

2006
Begoña Peco Ana M. Sánchez Francisco M. Azcárate

Many dehesa zones in marginal areas are suffering from the abandonment of traditional farming practices. Herbivore grazing affects grassland dynamics, changing the species colonisation and extinction relationships via consumption, mechanical disturbance, seed dispersal and altered soil fertility due to dung-borne nutrient input. This paper analyses changes to floristic composition, species rich...

Journal: :Science 2017
Crystal H McMichael Kenneth J Feeley Christopher W Dick Dolores R Piperno Mark B Bush

Levis et al (Research Articles, 3 March 2017, p. 925) concluded that pre-Columbian tree domestication has shaped present-day Amazonian forest composition. The study, however, downplays five centuries of human influence following European arrival to the Americas. We show that the effects of post-Columbian activities in Amazonia are likely to have played a larger role than pre-Columbian ones in s...

2014
Rolf L. Aalbu Aaron D. Smith

DUE TO A DIVERSITY OF HABITATS AND ITS GEOLOGIC HISTORY, THE US STATE OF CALIFORNIA HOSTS A SPECTACULAR ASSEMBLAGE OF DARKLING BEETLE SPECIES (COLEOPTERA: Tenebrionidae). In addition to being part of the California Floristic Province, one of 34 global biodiversity hotspots identified by Conservation International, California also has additional areas which are parts of the Great Basin, Mojave, ...

2017
Hua Zhu

The flora of Laos is composed of 5,005 species in 1,373 genera and 188 families of seed plants. Floristic and geographical attributes of the flora were analyzed. Tropical floristic elements at the family and generic levels contributed a majority (62.23% of the families and 82.30% of the genera) of the flora, of which the dominant geographical elements were pantropical distribution (42.02% of fa...

Journal: :Journal of Agricultural Sciences, Belgrade 2016

2009
M. R. Naghavi M. Maleki S. F. Tabatabaei

In order to study floristic and molecular classification of common wild wheat (Triticum boeoticum Boiss.), an analysis was conducted on populations of the Triticum boeoticum collected from different regions of Iran. Considering all floristic compositions of habitats, six floristic groups (syntaxa) within the populations were identified. A high level of variation of T. boeoticum also detected us...

2008
ANDREAS GRÖGER OTTO HUBER

(Rock outcrop habitats in the Venezuelan Guayana lowlands: their main vegetation types and floristic components). The Guayana Shield, located in north-eastern South America, consists of a highly complex and composite mosaic of landscape elements. Amongst these, inselbergs are very conspicuous, because of their peculiar shape and their unusual associated vegetation. Geologically, these rock outc...

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