FLORISTIC COMPOSITION AND PLANT COMMUNITY TYPES IN MAZE NATIONAL PARK, SOUTHWEST ETHIOPIA

Abstract Background This study was carried out in Gerba Dima Forest, South-Western Ethiopia, to determine the floristic composition, species diversity and community types along environmental gradients. Ninety sample plots having a size of 25 × 25 m (625 m2) were laid by employing stratified random sampling. Nested plots were used to sample plants of different sizes and different environmental variables. All woody plant species with Diameter at breast height (DBH) ≥ 2.5 cm and height ≥ 1.5 m were recorded in 25 m X 25 m plots. Within the major plots, five 3 m x 3 m subplots (9 m2) was used to collect shrubs with dbh < 2.5 cm and > 1.5 m height. Within each 9 m2subplots, two 1 m2 subplots were used to collect data on the species and abundance of herbaceous plants. Hierarchical (agglomerative) cluster analysis was performed using the free statistical software R version 3.6.1 using package cluster to classify the vegetation into plant community types. Redundancy Analysis (RDA) ordination was used in describing the pattern of plant communities along an environmental gradient. Result One hundred and eighty plant species belonging to 145 genera, 69 families and comprising of 15 endemic species were recorded. Cluster analysis resulted in five different plant communities and this result was supported by the ordination result. RDA result showed altitude was the main environmental variable in determining the plant communities. The ANOVA test indicated that the five community types differ significantly from each other with regard to EC and K. Conclusions The studied forest can play a significant role in biodiversity conservation since it harbours high species diversity and richness. Thus, all Stakeholders including Oromia Forest and wildlife enterprise (OFWE) and the regional government should work to designate the forest as a biosphere reserve and being registered under UNESCO.

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Floristic diversity of beech, fir and spruce forest (Piceo-Fago-Abietetum Colic 1965) in the „Tara“ national park

Glasnik Sumarskog fakulteta ◽

10.2298/gsf1002129c ◽

2010 ◽

pp. 129-143 ◽

Cited By ~ 2

Author(s):

Rade Cvjeticanin ◽

Marijana Novakovic

Keyword(s):

Plant Community ◽

National Park ◽

Life Form ◽

Floristic Composition ◽

Life Forms ◽

Site Conditions ◽

Floristic Diversity ◽

Spruce Forest ◽

Floristic Elements ◽

Floristic Element

This paper deals with the forest plant community of beech, fir and spruce (Piceo-Fago-Abietetum Colic 1965), which is the most widely distributed plant community on the territory of national park ?Tara?. Spectrum of life forms and floristic elements are specified for this community. Spectrum of life forms shows that hemicryptophytes are the most frequent, with high occurrence of geophytes, which is characteristic of this mesophilous plant community. Spectrum of floristic elements show that centraleuropean floristic element is dominant and that this plant community is under strong influence of subcentraleuropean region. Five subassociations are set apart on the basis of floristic composition and site conditions: typicum, drymetosum, aceretosum, pinetosum silvestrae and vaccinietosum. Spectrum of life forms is made for every subassociation separately in aim to compare their floristic compositions. Subassociations aceretosum and vaccinietosum are characterized by the highest occurence of phanerophytes, and the lowest occurence of this life form is represented in subassociation drymetosum. The highest occurence of geophytes is in subassociation aceretosum, and the lowest in pinetosum silvestrae and vaccinietosum. Occurence of hemicryptophytes is the highest in subassociations drymetosum and pinetosum silvestrae, and the lowest in aceretosum. Subassociation typicum is stable plant community, subassociations drymetosum and vaccinietosum grow on poorer sites, while subassociations aceretosum and pinetosum silvestrae represent degradation of beech, fir and spruce forest (Piceo-Fago-Abietetum Colic 1965).

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Analysis of Floristic Composition and plant Community types in Kenech Natural Forest, Kaffa Zone, Ethiopia.

Trees, Forests and People ◽

10.1016/j.tfp.2021.100170 ◽

2021 ◽

pp. 100170

Author(s):

Balemlay Sewale ◽

Siraj Mammo

Keyword(s):

Plant Community ◽

Floristic Composition ◽

Natural Forest ◽

Community Types

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Savanna plant community types at El Palmar National Park (Argentina)

Darwiniana nueva serie ◽

10.14522/darwiniana.2014.21.569 ◽

2014 ◽

Vol 2 (1) ◽

pp. 5-38 ◽

Cited By ~ 11

Author(s):

William B. Batista ◽

◽

Andrés G. Rolhauser ◽

Fernando Biganzoli ◽

Silvia E. Burkart ◽

...

Keyword(s):

Plant Community ◽

National Park ◽

Community Types

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Relating spatial and temporal patterns in floristics with vegetation mapping: an example from Fraser Island, south-east Queensland, Australia

Pacific Conservation Biology ◽

10.1071/pc060288 ◽

2006 ◽

Vol 12 (4) ◽

pp. 288 ◽

Cited By ~ 3

Author(s):

Ben E. Lawson ◽

Grant Wardell-Johnson

Keyword(s):

Plant Community ◽

Conservation Planning ◽

A Priori ◽

Floristic Composition ◽

Woody Species ◽

Vegetation Patterns ◽

Spatial And Temporal Patterns ◽

Shrub Species ◽

Ecological Patterns ◽

Community Types

The use of mapped polygons to represent vegetation patterns is becoming more widespread in conservation planning and natural resource management. The degree of homogeneity (i.e., one vegetation unit per polygon) of these polygons influences the efficacy of mapped patterns. It was observed that Fraser Island, south-east Queensland (SEQ) exhibited near complete map unit homogeneity relative to adjacent mainland areas. We sought to establish whether this homogeneity had an ecological or cartographic basis. Floristic presence-absence data from 50 quadrats, each sampled over three consecutive years, were analysed using cluster analysis (UPGMA) and ordination (SSH MDS) to define and compare eight numerically-derived plant community types with eight a priori regional ecosystem types derived from mapping of the island. Strong congruence between the two approaches was evident, suggesting that the mapping effectively portrayed ecological patterns. Floristic composition and species richness remained consistent at most quadrats for three consecutive years. Perennial woody species (including tree and shrub species) showed significant (P < 0.05) variation between regional ecosystem units and between plant community groups, but was stable through time. Conversely, the herb assemblage showed significant temporal variation and poor fidelity to vegetation classifications. High levels of map unit homogeneity were shown to extend to five barrier sand islands of SEQ across various map scales and map authors in these sandy environs. We conclude that homogeneity in mapped polygons on Fraser Island is a consequence of discrete boundaries and the associated distinctive floristics of the vegetation communities in this area. We suggest focussing limited mapping resources to areas of high polygon heterogeneity, instead of areas such as the SEQ sand islands which appear well represented by existing mapping.

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Plant Community Analysis along Environmental Gradients in Moist Afromontane Forest of Gerba Dima, South-western Ethiopia

10.21203/rs.3.rs-19997/v3 ◽

2021 ◽

Author(s):

Abyot Dibaba Hundie ◽

Teshome Soromessa Urgessa ◽

Bikila Warkineh Dullo

Keyword(s):

Cluster Analysis ◽

Species Diversity ◽

Plant Species ◽

Plant Community ◽

Plant Communities ◽

Environmental Gradients ◽

Floristic Composition ◽

Endemic Plant ◽

Community Types ◽

Western Ethiopia

Abstract Background: This study was carried out in Gerba Dima Forest, South-Western Ethiopia, to determine the floristic composition, species diversity and community types along environmental gradients. Ninety sample plots having a size of 25 X 25m (625m2) were laid by employing stratified random sampling. Nested plots were used to sample plants of different sizes and different environmental variables. All woody plant species with Diameter at breast height (DBH) ≥ 2.5 cm and height ≥ 1.5m were recorded in 25 m X 25 m plots. Hierarchical (agglomerative) cluster analysis was performed using the free statistical software R version 3.6.1 using package cluster to classify the vegetation into plant community types. Redundancy Analysis (RDA) ordination was used in describing the pattern of plant communities along an environmental gradient. Result: One hundred and eighty plant species belonging to 145 genera, 69 families and comprising of 15 endemic species were recorded. Of these, 52 species (28.9%) were trees, 6 species (3.33%) were Trees/shrubs, 31 species (17.22%) were shrubs, 76 species (42.22%) were herbs, and 15 species (8.33%) were Lianas. Rubiaceae, Acanthaceae and Asteraceae were the richest family each represented by 11 genera and 11 species (6.11%), 9 genera and 11 species (6.11%), 6 genera and 11 species (6.11%), respectively of total floristic composition. Cluster analysis resulted in five different plant communities and this result was supported by the ordination result. RDA result showed altitude was the main environmental variable in determining the plant communities. The ANOVA test indicated that the five community types differ significantly from each other with regard to Electrical Conductivity and Potassium. Conclusions: Description of floristic diversity of species in Gerba Dima forest revealed the presence of high species diversity and richness. The presence of endemic plant species in the study forest shows the potential of the area for biodiversity conservation.

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Field Guide to the Plant Community Types of Voyageurs National Park

Techniques and Methods ◽

10.3133/tm2a4 ◽

2007 ◽

Cited By ~ 1

Author(s):

Don Faber-Langendoen ◽

Norman Aaseng ◽

Kevin Hop ◽

Michael Lew-Smith

Keyword(s):

Plant Community ◽

National Park ◽

Field Guide ◽

Community Types ◽

Voyageurs National Park

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Ecological and floristic study of Hirmi woodland vegetation in Tigray Region, Northern Ethiopia

Ecological Processes ◽

10.1186/s13717-020-00257-2 ◽

2020 ◽

Vol 9 (1) ◽

Author(s):

Mehari Girmay ◽

Tamrat Bekele ◽

Sebsebe Demissew ◽

Ermias Lulekal

Keyword(s):

Species Diversity ◽

Plant Species ◽

Plant Community ◽

Plant Communities ◽

Vegetation Structure ◽

Floristic Composition ◽

Individual Species ◽

Shannon Diversity ◽

Regeneration Status ◽

Community Types

Abstract The dryland area in Ethiopia covers a substantial region endowed with diverse plant resources. However, the landmass has received less attention even if it has high ecological, environmental, and economic uses. The present study was conducted in Hirmi woodland vegetation, which is one of the dryland areas in Ethiopia, with the objective of investigating the floristic composition, plant community types, vegetation structure, community-environment relations and its regeneration status. Vegetation and environmental data were collected from 80 sampling plots with a size of 25 m × 25 m designated as the main plots. Diameter at breast height (DBH), height, basal area, density, vertical structure, importance value index (IVI), and frequency were computed. Species diversity and evenness were analyzed using Shannon diversity and evenness indices. The plant community types and vegetation-environment relationships were analyzed using classification and ordination tools, respectively. A total of 171 vascular plant species belonging to 135 genera and 56 families were recorded. About 5.3% of the species were endemic and near-endemic to Ethiopia. The highest number of species was recorded in families Fabaceae (16.4%) and Poaceae (11.7%) followed by Asteraceae (7.0%), Combretaceae, Lamiaceae, and Moraceae (3.5% each). Five plant communities were identified. According to the results from ordination analysis, the floristic composition of these plant communities was significantly affected by altitude, slope, sand, silt, soil organic matter, total nitrogen, and disturbance. The vegetation structure reveals that a large number of individual species was categorized in the lower DBH, frequency, and height classes. The highest Shannon diversity index and evenness values of the study area were 4.21 and 0.95, respectively. Anogeissus leiocarpa, Combretum hartmannianum, Ziziphus mucronata, Terminalia macroptera, and Acacia polyacantha were the species with high IVI. Some endemic plants were in the IUCN red list categories of Ethiopia and Eritrea. The overall regeneration status of the study area was poor because of anthropogenic disturbances and grazing pressures. Although the study area is endowed with high plant species diversity including endemism, it is under poor regeneration status due to various disturbances. To overcome this challenge, integrated management measures including monitoring and application of restoration techniques by taking into consideration the significant environmental factors associated with species diversity as well as observed regeneration status and IUCN threat level of the species are highly recommended.

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Altitudinally coordinated pattern of plant community structure in the Shivapuri National Park, Nepal

Banko Janakari ◽

10.3126/banko.v18i1.2161 ◽

1970 ◽

Vol 18 (1) ◽

pp. 11-17 ◽

Cited By ~ 1

Author(s):

Shalik Ram Sigdel

Keyword(s):

Community Structure ◽

Species Diversity ◽

Plant Species ◽

Plant Community ◽

National Park ◽

Climatic Factors ◽

Flower Colour ◽

Basal Area ◽

Plant Community Structure ◽

Closed Canopy

Study on plant community structure was undertaken in different altitudinal ranges of Shivapuri National Park. The general objective of this study is to analyse different plant community structure in Shivapuri National Park with regards to altitudinal variation. The forest was divided into three distinct altitudinal ranges on the basis of dominancy. In each altitudinal range standard quadrats method was applied for vegetation analysis. The highest number of species was found in site II. All the ecological parameters of the plant species were higher in site II except Basal Area of tree that was highest in site III. The pattern of distribution of plant species was not uniform according to altitude. At higher elevation, the forest was mature with almost closed canopy and trees were large; so the tree density was low. Species richness was highest in site II. Species diversity among tree and shrub species was higher in site I. But for herb species diversity was higher in site II for both seasons. Such type of variations may be due to nature of soil i.e. acidity, nutrient availability and other micro-climatic factors. The most noteworthy thing was that variation in flower colour of Rhododendron arboreum i.e. deep scarlet at low altitude, but it gradually changed into pinkish white as altitude increased. Key words: Altitude, Density, Plant community, Species diversity doi: 10.3126/banko.v18i1.2161 Banko Janakari, Vol. 18, No. 1, 11-17

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