scholarly journals Diversity and Community Structure of Plants in Selected Areas within Lake Mainit Watershed

2020 ◽  
Vol 5 (6) ◽  
pp. 1482-1500
Author(s):  
Romana M.Maglinte ◽  
Julie E.Asubar ◽  
Emeliano M. Bermudez, Jr ◽  
Gregorio Z. Gamboa, Jr ◽  
Bernadette P.Bagaipo ◽  
...  
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Plant Species ◽  
Anthropogenic Activities ◽  
Native Plant ◽  
Native Plant Species ◽  
Quadrat Method ◽  
Environmental Integrity ◽  
Sustainable Conservation ◽  
Trees And Shrubs

Lake Mainit is one of the key biodiversity areas in the country, its watershed area is a habitat of endemic and native plant species but is now threatened due to anthropogenic activities such as mining, kaingin and expansion of agriculture. This study assessed the diversity and community structure of plants in the lowland and upland of the two selected areas (Cantugas and Jabonga) of Lake Mainit watershed through a transect and quadrat method. A total of 321 floral species were identified distributed into 85 families. The taxonomically well distributed families were Arecaceae, Moraceae and Fabaceae with 18, 17 and 14 species respectively and most species were trees and shrubs (187 species). The highest species diversity, richness and abundance was observed in the lowland of Jabonga while the highest dominance was observed in the upland of Catugas. The floral species of Lake Mainit watershed are threatened by anthropogenic activities especially expansion of agriculture and tree felling for infrastructure developments regardless of their environmental roles and inherent benefits. Therefore, sustainable conservation efforts should be geared towards ensuring their continuous existence in order to maintain environmental integrity.

Relating pine-litter intrusion to plant-community structure in native eucalypt woodland adjacent to Pinus radiata (Pinaceae) plantations

2007 ◽  
Vol 55 (5) ◽  
pp. 521 ◽  
Author(s):  
Andrew C. Baker ◽  
Brad R. Murray ◽  
Grant C. Hose
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Plant Species ◽  
Plant Community ◽  
Plant Species Richness ◽  
Radiata Pine ◽  
Plant Community Structure ◽  
Native Plant ◽  
Native Plant Species ◽  
Eucalypt Woodland

Radiata pine (Pinus radiata D.Don) plantations are often found in close proximity to vegetation set aside for biodiversity conservation. We examined the intrusive effects of radiata pine beyond the confines of plantations by quantifying the penetration of pine litter (needles, cones, twigs and seeds) and wildings from plantations into adjacent eucalypt woodland in the Jenolan Caves Karst Conservation Reserve (south-eastern Australia). We then investigated the relationship between pine-litter intrusion and plant-community structure in adjacent woodland vegetation. We found significantly higher quantities of pine litter and wildings at all sites adjacent to plantations than at reference woodland sites that were not adjacent to plantations. At adjacent sites, pine litter decreased significantly with increasing distance from plantations. Alarmingly, native plant species richness declined and exotic plant species richness increased with increasing quantities of pine litter. Thus, there were fewer native plant species and more exotics in areas bordering pine plantations. Our findings suggest a potentially important link between the intrusion of pine litter and a loss of native biodiversity and facilitation of exotic-species invasion. We suggest the provision of a buffer zone around plantations in order to minimise intrusive impacts of plantations on native biodiversity.

scholarly journals Yeast communities structure in fruits of different native plant species of brazilian Cerrado

2020 ◽  
Vol 17 (1) ◽  
pp. 35-46
Author(s):  
Lucas Gabriel Ferreira Coelho ◽  
Geisianny Augusta Monteiro Moreira ◽  
Catharine Abreu Bomfim ◽  
Helson Mario Martins do Vale
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Molecular Identification ◽  
Axenic Culture ◽  
Its Region ◽  
Native Plant ◽  
Brazilian Cerrado ◽  
Conservation Units ◽  
Native Plant Species ◽  
Distrito Federal

In this study, we evaluated the occurrence and diversity of endophytic and total (endophytic + epiphytic) yeasts in fruits of seven Cerrado native plant species in two Conservation Units from the Distrito Federal, Brasília, Brazil. Healthy and mature fruits were collected for the isolation of yeasts using MYGP medium. After five days, the colonies were counted and the morphologically distinct yeasts were isolated axenic culture. The molecular identification of the isolates was performed using ITS region (rDNA). A total of 69 specimens of yeasts were isolated. The Guapira graciliflora (endophytic) and Ouratea hexasperma (total) hosts had higher yeast densities per gram of fruit and together with the Brosimum gaudichaudii showed higher species diversity. Yeasts belonging to the Ascomycota Phylum were predominant. The most frequent genera of yeasts were Candida, Aureobasidium and Hannaella. Others genera such as Hanseniaspora, Meyerozyma, Filobasidium, Cryptococcus, Symmetrospora, Sirobasidium, Meira, Rhodosporidiobolus, Papiliotrema and Erythrobasidium were identified. This is the first report of the occurrence of endophytic yeasts in fruits of G. graciliflora and represents the host with greater density and diversity of species of endophytic yeasts. In addition, expands the knowledge about the occurrence of yeasts associated with the fruits of seven native plant species of the Cerrado.

scholarly journals The invasive Opuntia ficus-indica homogenizes native plant species compositions in the highlands of Eritrea

2020 ◽  
Author(s):  
Yohannes B. Tesfay ◽  
Juergen Kreyling
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Plant Species ◽  
Native Species ◽  
Diversity Index ◽  
Native Plant ◽  
Opuntia Ficus Indica ◽  
Native Plant Species ◽  
Negative Effect ◽  
Dry Climates

Abstract Invasion by exotic species is recognized as one of the major threats to biodiversity. The effects of invasion by Opuntia ficus-indica (Cactaceae) on the species diversity, richness and composition of invaded communities were studied at three sites in the highlands of Eritrea, East Africa. This paper investigates whether the presence of O. ficus-indica causes a negative effect on the native biodiversity in a region rarely studied so far. The vegetation in invaded and uninvaded plots with similar habitat conditions was sampled and differences in the species composition, diversity and richness were compared between the plots. The overall plant species composition differed significantly with invasion by O. ficus-indica. The invasion by O. ficus-indica also led to a significant homogenization of community compositions. The species richness and Shannon diversity index did not differ significantly between the invaded and uninvaded plots. Nevertheless, we still detected species with significantly lower occurrence in the invaded plots (Psiadia punctulata), but also species which preferred invaded plots (Plectranthus hadiensis). We conclude that O. ficus-indica exerts a negligible effect on the species diversity and richness but that it affects species composition and that there are species which suffer due to its presence. Due to the continuous pressure of the invasion by O. ficus-indica on the species composition and dry climates, further homogenization in the native species diversity is to be expected in the future for the highlands of Eritrea.

Native plant species field evaluation in salt desert: good materials, bad situation

2015 ◽  
Vol 16 (2) ◽  
pp. 87-95 ◽  
Author(s):  
N. Grant-Hoffman ◽  
S. Parr ◽  
T. Blanke
Keyword(s):  
Plant Species ◽  
Field Evaluation ◽  
Native Plant ◽  
Native Plant Species ◽  
Salt Desert

Ten-year persistence of native plant species on a green roof in Northeast US

2017 ◽  
Vol 18 (3) ◽  
pp. 227-234
Author(s):  
Jessica D Lubell ◽  
Bryan Connolly ◽  
Kristina N Jones
Keyword(s):  
Plant Species ◽  
Green Roof ◽  
Native Plant ◽  
Native Plant Species ◽  
Northeast Us

ALTERED POLLINATION ECOLOGY OF A NATIVE PLANT SPECIES IN THE PRESENCE OF AN ATTRACTIVE NON-NATIVE PLANT SPECIES

Rhodora ◽  
10.3119/18-11 ◽  
2019 ◽  
Vol 121 (987) ◽  
pp. 159
Author(s):  
Adam J. Ramsey ◽  
Steven M. Ballou ◽  
Jennifer R. Mandel
Keyword(s):  
Plant Species ◽  
Pollination Ecology ◽  
Native Plant ◽  
Native Plant Species
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