scholarly journals Floristic Survey of Meethirigala Forest Reserve in Gampaha District

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
J.D. Kalubowila ◽  
B.M.P. Singhakumara ◽  
R.A.M.P.M. Rajathewa
Keyword(s):  
Plant Species ◽  
Forest Type ◽  
Diversity Indices ◽  
Forest Species ◽  
Forest Reserve ◽  
Woody Perennials ◽  
Reserve Forest ◽  
Study Sites ◽  
Topographic Positions ◽  
Kelani River

Meethirigala forest reserve consists of approximately 384 ha. It is the largest forest reserve in Gampaha District managed by the Forest Department. It has different topographic positions such as ridges, midslopes and valley areas close to the Kelani River. The present study was conducted to enumerate plant species found in all three topographic positions of the reserve. Plots were demarcated purposively to sample woody perennials equal or greater than 5 cm dbh (diameter at breast height) in 18 plots (5×100 m, rectangular shape). Seedlings greater than 1 m tall were sampled in 18 plots (5×5 m). Shannon diversity indices were calculated to compare dominance of particular species in different topographic positions. A total of 360 individuals of woody perennials belonging to 73 species in ridge, 368 individuals of woody perennials belonging to 100 species in midslope and 272 individuals of woody perennials belonging to 69 species in valley were recorded. And 132, 123 and 100 individuals of seedlings were enumerated in ridge, midslope and valley respectively. In ridge 58 generas, 28 families, in midslope 83 generas, 35 families and, in valley 68 generas, 29 families were observed. 28 species were found in all three different altitudes of the reserve. Forest species in study sites gave a total of 138 plant species belonging to 113 tree species, 11 climber species, 14 shrub species, 109 generas and 46 families. Of this total 138 species, 34 (25%) species are endemic to Sri Lanka. Highest endemism was recorded in the ridge (41.6%). Stratification of the ridge showed a very similar pattern to a Dipterocarp forest type. Highest diversity was recorded in midslope (1.7290) and lowest recorded in ridge (1.5626) of the forest. 18 threatened species were observed (3-Endangered and 15-vulnerable species). As a conclusion, Meethirigala forest reserve can be considered as an important refuge for wet zone forest species.

scholarly journals Floristic Study of Karnaphuli Range in Kaptai Reserve Forest, Rangamati, Bangladesh

2020 ◽  
Author(s):  
Md. RIshad Abdullah ◽  
AKM Golam Sarwar ◽  
Md. Ashrafuzzaman ◽  
Md. Mustafizur Rahman
Keyword(s):  
Plant Species ◽  
Forest Species ◽  
Threatened Plant ◽  
Floristic Study ◽  
Threatened Plant Species ◽  
Reserve Forest ◽  
Voucher Specimens ◽  
Near Threatened

A botnical survey was conducted in Kaptai reserve forests under Rangamati district in Bangladesh to study the flora of Karnaphuli range from May 2015 to October 2018. The survey was accompanied by a collection of voucher specimens enumerates 464 plant species belonging to 334 genera under 117 families from the forest range. The survey has confirmed 31 threatened forest species from this area along with many near threatened plant species.

scholarly journals Floristic Study of Karnaphuli Range in Kaptai Reserve Forest, Rangamati, Bangladesh

2020 ◽  
Author(s):  
Md. RIshad Abdullah ◽  
AKM Golam Sarwar ◽  
Md. Ashrafuzzaman ◽  
Md. Mustafizur Rahman
Keyword(s):  
Plant Species ◽  
Forest Species ◽  
Threatened Plant ◽  
Floristic Study ◽  
Threatened Plant Species ◽  
Reserve Forest ◽  
Voucher Specimens ◽  
Near Threatened

A botnical survey was conducted in Kaptai reserve forests under Rangamati district in Bangladesh to study the flora of Karnaphuli range from May 2015 to October 2018. The survey was accompanied by a collection of voucher specimens enumerates 464 plant species belonging to 334 genera under 117 families from the forest range. The survey has confirmed 31 threatened forest species from this area along with many near threatened plant species.

scholarly journals Flora of the K.V. Ivanov square of Cheboksary of Chuvash Republic

2018 ◽  
Vol 7 (2) ◽  
pp. 26-30
Author(s):  
Yury Olegovich Dimitriev
Keyword(s):  
Plant Species ◽  
Forest Type ◽  
Life Forms ◽  
Larix Sibirica ◽  
Tilia Cordata ◽  
Forest Species ◽  
Weed Species ◽  
Picea Pungens ◽  
Synanthropic Species ◽  
Chuvash Republic

The square named after K.V. Ivanov was founded in the 1930s. The total area of 5,3 hectares. Tilia cordata Mill. Predominates. The flora of the square contains 86 plant species from 74 genera and 35 families. The division Pinophyta is represented by two species - Larix sibirica Ledeb. and Picea pungens Engelm. Six species from the families Poaceae and Cyperaceae are monocotyled. The systematic diversity of the flora is very low. Virtually every genus is represented by only one species. The average level of species wealth in one family is 2,46. The number of families with one species is 19 (54,3%). The top ten in the number of species families concentrate 64% of the species. The spectrum of the leading families of the square flora indicates its thermophilic appearance. The share of synanthropic species in the flora as a whole is 61,6%. The index of synanthropization ( Is ) of the square flora is 1,61 and emphasizes the anthropogenic nature of the landscape. The aboriginal fraction of the flora is strongly altered ( Is = 0,61). In the spectrum of life forms hemicryptophytes (33,7%), phanerophytes (30,2%) and therophytes (22,1%) dominate. According to the biomorphs system of I.G. Serebryakov perennial herbaceous plants (41,9%) dominate, whose spectrum reflects the forest type of biocenosis, annuals (22,1%), trees (19,8%) and shrubs (10,5%). In the ecologo-cenotic spectrum weed species (36%), forest species (18,6%), cultivar species (17,4%), meadow plants (11,6%) dominate. In the hygromorph spectrum mesophytes (72,1%) dominate, then xeromesophytes (15,1%) follow, the share of the remaining groups varies from 1,2 to 5,8%. In the spectrum of trophomorphs mesotrophs (57%) and megatrophs (37,2%) dominate. The square named after K.V. Ivanov is characterized by stability of functioning, provided by wood and shrub plantations. The lawn is heavily clogged and requires its reconstruction.

scholarly journals An Application of Non-Parametric Method and Simple Linear Regression in Rainfall Partitioning in Tropical Lowland Forest of Sepilok Forest Reserve, Sabah

2020 ◽  
pp. 1-8
Author(s):  
Maznah Mahali ◽  
Shazrul Azwan Johari ◽  
Siti Rahayu Mohd Hashim ◽  
Reuben Nilus ◽  
Hafizan Juahir ◽  
...  
Keyword(s):  
Linear Regression ◽  
Stand Structure ◽  
Forest Type ◽  
Parametric Method ◽  
Simple Linear Regression ◽  
Lowland Forest ◽  
Forest Reserve ◽  
Lowland Tropical Forest ◽  
Heath Forest ◽  
Alluvial Forest

This study was conducted in the alluvial forest and heath forest in the lowland tropical forest of Sepilok Forest Reserve, Sabah, Malaysia. The main objective was to assess how forest structure regulates rainfall partitioning in both forests. Field monitoring involved a series of forest inventory work to determine the forest stand characteristics. Mann Whitney U test was performed to compare physical characteristics between the two forests. Meanwhile rainfall partitioning was quantified by measuring the throughfall (Tf) for a period of 12 months in ten (15 x 15 m) Tf plots and a simple linear regression was conducted to obtain a regression model to estimate Tf. In terms of stand structure characteristics, data in the alluvial forest indicates wider variation. Percentage of Tf as of gross rainfall (Pg) is higher in the heath forest than in alluvial forest with the value of 89.5 % and 76.8 %, respectively. Representative trees were selected for stemflow (Sf) estimation at each forest type. The estimated Sf is 0.2 % in alluvial forest and 0.5 % in heath forest. In this study, tree diameter at breast height (Dbh) and height as well as aboveground biomass were identified to have some influence in Tf and Sf production. Keywords: rainfall partitioning; gross rainfall; throughfall; stemflow; Mann Whitney U; simple linear regression

scholarly journals DYNAMICS OF FRUIT FLIES POPULATIONS IN TWO MANGO PRODUCTION ZONES (KORHOGO AND FERKÉ) IN NORTHERN CÔTE D’IVOIRE

2019 ◽  
Vol 7 (7) ◽  
pp. 256-264
Author(s):  
Minhibo Magloire Yves ◽  
Akpesse Akpa Alexandre Moïse ◽  
Coulibaly Tenon ◽  
Koua K Hervé ◽  
Coulibaly Adama
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Diversity Indices ◽  
Fruit Flies ◽  
Shannon Index ◽  
Bactrocera Dorsalis ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Set Up ◽  
Study Sites

Fruit flies are a major constraint to the production and export of mangoes by causing the rot of mangoes. The objective of this work is to follow the fluctuation of population of flies in the northern part of Côte d'Ivoire between May 2015 and October 2016. A network of trapping flies using food baits (the Torula and Ceratrap) and sexual attractants (Methyl Eugenol and Trimedlure) were set up in Korhogo and Ferké mango orchards with the forest Diabaté Kamonon and the forest Petit Clerc as reference area. During trapping, 11 species of fruit flies were identified at all study sites. Among these species, Bactrocera dorsalis and Ceratitis cosyra, were the most abundant in the area. In general, diversity indices were low. The Ferké’s Forest has the highest Shannon index (H = 1.20). This index was higher than the index found in Ferke's orchards (0.9398). At Korhogo the Shannon index in orchards (H = 0.84) is higher than in the forest (H = 0.41). It has been observed that the genus Bactrocera swarmed on mango orchards when precipitation was plentiful. While the genus Cerartitis only appeared when precipitation was low. In addition, knowledge of the ecology and fluctuation of fruit flies, will allow to develop a site monitoring device through a trapping system with sexual and food attractants.

Decreased photosynthetic efficiency in plant species exposed to multiple airborne pollutants along the Russian-Norwegian border

2000 ◽  
Vol 78 (8) ◽  
pp. 1021-1033 ◽  
Author(s):  
Ann Marie Odasz-Albrigtsen ◽  
Hans Tømmervik ◽  
Patrick Murphy
Keyword(s):  
Chlorophyll Fluorescence ◽  
Plant Species ◽  
Photosynthetic Efficiency ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Plant Cover ◽  
Mixed Forest ◽  
Airborne Pollutants ◽  
Fluorescence Measurements ◽  
Study Sites

Photosynthetic efficiency was estimated by chlorophyll fluorescence measurements (Fv/Fm) in 11 plant species growing along a steep gradient of airborne pollution along the Russian-Norwegian border (70°N, 30°E). Photosynthetic efficiency was positively correlated with environmental variables including annual temperature and a maritime gradient and was negatively correlated with the airborne concentrations of Cu, Ni, and SO2 from the Cu-Ni smelters. Photosynthetic efficiency in six plant species from the mixed forest, but not pine (Pinus sylvestris L.), and three species from the birch forest was inversely correlated with SO2 and the concentrations of Ni and Cu in lichens. Measurement of fluorescence in these species was a sensitive indicator of pollutant impact. Plant cover at the 16 study sites and the photosynthetic efficiency of five target species correlated with normalized difference vegetation index (NDVI) values. This study demonstrated that it is possible to detect relations among field-measured ecophysiological responses in plants, levels of airborne pollutants, and satellite remote-sensed data.Key words: chlorophyll fluorescence, smelters, sulfur dioxide, nickel, copper, normalized difference vegetation index (NDVI).

scholarly journals Predation of the Buffy-fronted Seedeater Sporophila frontalis (Aves: Emberizidae) on Merostachys neesii (Poaceae: Babusoideae) seeds during a masting event in the Atlantic forest

2011 ◽  
Vol 11 (3) ◽  
pp. 407-411 ◽  
Author(s):  
César Cestari ◽  
Cláudio João Bernardi
Keyword(s):  
Atlantic Forest ◽  
Predation Rate ◽  
The Other ◽  
Southeastern Brazil ◽  
Forest Species ◽  
Forest Reserve ◽  
Point Counts ◽  
Other Hand ◽  
Predatory Impact

The Buffy-fronted Seedeater Sporophila frontalis (Verreaux, 1869) is frequently found foraging on seeds during ephemeral masting events of bamboos in the Atlantic forest. In the present study, we analyzed the predation activity of S. frontalis on seeds of Merostachys neesii Rupr. during a masting event in an Atlantic forest reserve on southeastern Brazil. We conducted point counts in spots with M. neesii and in spots without bamboos along trails to determine the presence of S. frontalis on M. neesii clumps. Additionally, focal observations on bamboo clumps and seed traps were used to verify the predatory impact of S. frontalis on M. neesii seeds. S. frontalis was present in 6 out 18 point counts in M. neesii clumps. The seedeater behaved territorially in bamboo clumps and presented a mean predation rate of 1.10 bamboo seeds/minute. Seed traps had up to 80% of the seeds predated. The large amount of seeds available during bamboo masting events probably contributes to the maintenance of wandering populations of S. frontalis in the Atlantic forest. On the other hand, the predation of seeds by S. frontalis may reduce the reproductive germination and the propagation of the bamboos whose growth may in turn negatively affect the establishment of other forest species.

scholarly journals Fruiting Species Influence the Seasonal Use of the Habitat by Sloth Bear in and around Balaram Ambaji Wildlife Sanctuary, Gujarat, India

2019 ◽  
Vol 11 (2) ◽  
pp. 183-190
Author(s):  
Tana P. MEWADA ◽  
Umeshkumar L. TIWARI ◽  
Amit KOTIA
Keyword(s):  
Forest Type ◽  
Management Strategies ◽  
Scientific Basis ◽  
Wildlife Sanctuary ◽  
Feeding Site ◽  
Factors Affecting ◽  
Sign Surveys ◽  
Common Resource ◽  
Reserve Forest ◽  
Sloth Bear

Sloth bear populations in India are threatened, and the ecology and distribution of the species occurring in the region's protected areas are known, but there is no scientific basis underlying management strategies for sloth bear. We used bear indirect and opportunistic direct signs like feeding site, scats, foot print trails, claw marks on climbing trees, to study habitat use and distribution of sloth bear (Melurus ursinus) across Balaram Ambaji Wildlife Sanctuary and Danta Reserve Forest, Gujarat, India from April, 2010 to January 2011. We survey 40 grids (5 × 5 km) 3 km signs survey = 120 km × 3 = 360 km and total 766 bear signs were recorded, and for vegetation we surveyed 40 grids × 2 km vegetation transect = 80 km were sampled. A total of nine (9) vegetation types were recorded and the bear sign where crossed check with the vegetation forest type. Fruits appear to be a key resource for sloth bears, and factors affecting fruit abundance or seasonality will affect bear foraging as well as the humans to depend on such fruits as a food common resource. Knowledge of this relationship will allow managers to be more proactive in managing bears. We recommend using sign surveys for monitoring changes in sloth bear presence, as they are inexpensive, efficient, and can be conducted by trained rangers.

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