scholarly journals Non-Inverse J - shaped population distribution: Peculiarity of Red Sanders forests

2018 ◽  
Vol 10 (2) ◽  
pp. 11356
Author(s):  
S. Suresh Ramanan ◽  
T. K. Kunhamu
Keyword(s):  
Population Structure ◽  
Andhra Pradesh ◽  
Population Distribution ◽  
Natural Habitat ◽  
Wildlife Sanctuary ◽  
Pterocarpus Santalinus ◽  
Red Sanders ◽  
Density Population

Response to the published article "A study on the density, population structure and regeneration of Red Sanders (Pterocarpus santalinus) (Fabales: Fabaceae) in a protected natural habitat of Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh, India" by Ankalaiah et al. 2017. 

scholarly journals A study on the density, population structure and regeneration of Red Sanders Pterocarpus santalinus (Fabales: Fabaceae) in a protected natural habitat - Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh, India

2017 ◽  
Vol 9 (9) ◽  
pp. 10669 ◽  
Author(s):  
Chenchu Ankalaiah ◽  
Thondaladinne Mastan ◽  
Mullangi Sridhar Reddy
Keyword(s):  
Population Structure ◽  
Natural Habitat ◽  
Eastern Ghats ◽  
Stem Density ◽  
Mature Trees ◽  
Adult Trees ◽  
Pterocarpus Santalinus ◽  
Ratio Change ◽  
Red Sanders ◽  
Density Population

Pterocarpus santalinus is a highly valued medium-sized leguminous endemic tree with a restricted range in the southern Eastern Ghats deciduous forests.  The enumeration in four 1ha plots has yielded a total of 878 Red Sanders tree individuals (≥30cm girth at breast height - gbh) with a range of 165–246 individuals per ha and 9–51 individuals per 0.01ha.  The size class structure revealed that the majority of individuals occurred in lower gbh classes with 364 individuals (39.5%) in 30–50 cm gbh class and 420 individuals (45.6%) in 51–70 cm gbh class, while in the higher gbh class (71–90 cm gbh) only 129 individuals (14%) and seven individuals in >90cm gbh class were recorded.  Overall the population structure indicated a low ratio change in lower gbh classes suggesting a stable population.  A higher percentage of life stages in recruitment stage like seedlings and saplings than trees was observed and the feature of re-sprouting from roots after fire damage was also recorded.  A bottleneck progress from regenerating trees to adult trees was noticed, may be due to slow growth of the species.  High stem density and presence of individuals in all the regenerating and reproductive classes suggest that Red Sanders is tolerant to mild disturbance.  But the drastic reduction in the density in higher gbh class reflects the concern for recruitment in future as it may affect the seed output due to loss of reproductively fit mature trees.

Stakeholders' perceptions on developing sustainable Red Sanders (Pterocarpus santalinus L.) wood trade in Andhra Pradesh, India

2013 ◽  
Vol 26 ◽  
pp. 43-53 ◽  
Author(s):  
Sidhanand Kukrety ◽  
Puneet Dwivedi ◽  
Shibu Jose ◽  
Janaki R.R. Alavalapati
Keyword(s):  
Andhra Pradesh ◽  
Pterocarpus Santalinus ◽  
Red Sanders

scholarly journals Phytodiversity and conservation of Nithypooja Kona Sacred Grove of Nallamala Hill Range, Eastern Ghats, Andhra Pradesh

2015 ◽  
Vol 4 (2) ◽  
pp. 271-288
Author(s):  
SKM Basha ◽  
M John Paul ◽  
P Siva Kumar Reddy
Keyword(s):  
Andhra Pradesh ◽  
Raw Materials ◽  
Eastern Ghats ◽  
Sacred Grove ◽  
Sacred Groves ◽  
Gloriosa Superba ◽  
Ecological Functions ◽  
Pterocarpus Santalinus ◽  
Pharmaceutical Industries ◽  
Red Sanders

Sacred groves are climax forests and are the only representatives of natural or near-natural vegetation. These are dedicated to deities or ancestral spirits worshipped by local tribes along with surrounding plants and trees. These are ecosystems by themselves and perform all the ecological functions. Phytodiversity constitute a large segment of the flora which provides raw materials for use by numerous Pharmaceutical industries. The present study will be useful for researchers in the field of Ethan botany, Ethnomedicine, Taxonomy, and Pharmacology for further studies. Nithyapoojakona Sacred grove is one of the important sacred groves in Kadapa district. The present paper deals with the phyto-diversity of the above grove used by local tribes. This paper deals with the 181 species of probable medicinal potential belonging to 138 genera and 71 families. Significant flora are Cycas beddomei, Pterocarpus santalinus, Drosera burmaptonni, Orabanche cernua, Neptunia oleracea, Hugonia mystax, Caralluma adsendens , Gloriosa superba, Limnophila spp, Centella sasiatica etc. Word famous Red sanders population of the study area is being destroyed unethically and it is to be protected. DOI: http://dx.doi.org/10.3126/ije.v4i2.12648 International Journal of Environment Vol.4(2) 2015: 271-288

scholarly journals Avifaunal diversity in the scrub forest of Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh, India

2017 ◽  
Vol 9 (9) ◽  
pp. 10679
Author(s):  
Sumant Mali ◽  
Chelmala Srinivasulu ◽  
Asad R. Rahmani
Keyword(s):  
Andhra Pradesh ◽  
Bird Species ◽  
Wildlife Sanctuary ◽  
Peninsular India ◽  
Scrub Forests ◽  
Scrub Forest

A total of 115 bird species belonging to 47 families were recorded in the scrub forests of the Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh, India in a survey carried out from May 2014 to April 2015.  Of these, 107 species were resident and nine species were resident migrants. The scrub forests of peninsular India are equally important as other habitats for avifaunal assemblages.

scholarly journals Autecology of Drosera burmanni in the Wolobobo Botanic Gardens, Ngada District, Flores Island, Indonesia

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
Joko Ridho Witono ◽  
DIDI USMADI ◽  
WIHERMANTO ◽  
DANANG WAHYU PURNOMO ◽  
DINA SAFARINANUGRAHA ◽  
...  
Keyword(s):  
Population Distribution ◽  
Natural Habitat ◽  
In Situ Conservation ◽  
Imperata Cylindrica ◽  
Annual Rainfall ◽  
Limited Area ◽  
Botanic Gardens ◽  
Island Conservation ◽  
Conservation Area ◽  
Associated Species

Abstract. Witono JR, Usmadi D, Wihermanto, Purnomo DW, Safarinanugraha D, Pakiding Y, Netoseso N. 2020. Autecology of Drosera burmanni in the Wolobobo Botanic Gardens, Ngada District, Flores Island, Indonesia. Biodiversitas 21: 2137-2145. Drosera burmanni Vahl is a native carnivorous plant from tropical and subtropical Asia to the West Pacific, including Flores Island. During the botanical survey, a small population of the species was found in a limited area in the Wolobobo Botanic Gardens, Flores Island. Conservation of the species is necessary, since the habitat might be developed for the botanic gardens infrastructure. This research aims to study the autecology of D. burmanni, including environmental preferences and its associated species. Thirty plots with 2 x 2 m each were made to recognize its associated species and the pattern of its population distribution and its soil requirements. In the Wolobobo Botanic Gardens, D. burmanni flourishes with an average annual rainfall of 1835 mm; a temperature of 12.50-26.2° C; 48-99% humidity; at an altitude of 1489-1491 m asl.; a soil pH of 6.66, which contains very high C-organic, a high C/N ratio, moderate N total, K2O, P2O5, low CEC, and very low K, Na, Ca, Mg, and BS. Drosera burmanni displays a density of 8.5 individuals per m2 and is associated with 20 species, which belong to 19 genera and 9 families. The species has a clustering pattern and a positive association with Erigeron sumatrensis, Spinifex littoreus, and Imperata cylindrica. To conserve D. burmanni in the Wolobobo Botanic Gardens, it is necessary to designate its natural habitat as an in situ conservation area.

scholarly journals Corrugated Galvanised Iron Sheet as an Alternative to Conventional Roofing Materials “A case study from Sakteng Wildlife Sanctuary, Bhutan”

2018 ◽  
Vol 6 (01) ◽  
Author(s):  
Sonam Tobgay ◽  
Kumbu Dorji ◽  
Norbu Yangdon
Keyword(s):  
Habitat Management ◽  
Positive Impact ◽  
Natural Habitat ◽  
Drainage System ◽  
Development Program ◽  
Wildlife Sanctuary ◽  
Run Off ◽  
Community Pressure ◽  
The Impact ◽  
Roofing Materials

Corrugated galvanized iron (CGI) sheet as an alternative to conventional roofing material was initiated under the integrated conservation development program (ICDP) of Sakteng Wildlife Sanctuary in the year 2004. The program was aimed at reducing community pressure on natural resources to enhance conservation of biodiversity and keystone fauna and flora species through protection of wild habitat. It has benefited 628 inhabitants of Merak and Sakteng which were identified as the least developed among 15 Gewogs (Blocks) under Trashigang Dzongkhag (District). Data were collected through semi structured questionnaires to study the impact of the program to policy and natural habitat management. Amongst the two types of conventional roofing materials available in the locality, Shingles (79%) were in extensive use in comparison to Bamboo mat (21%) attributing to its durability. However, people prefer to use CGI sheet (100%) roofing which is economical, durable and effective in comparison to Shingle and Bamboo mat roofing, where incidences of water seepage to the room is frequent and requires replacing after 5.6 and 1.7 years respectively incurring higher maintenance costs. Replacing conventional roofing with CGI sheet has a long-term positive impact to conservation of forest and wild habitat. It is estimated that under ideal conditions approximately 5521 healthy matured Fir trees (>4'1''girth) and 1.68 million Bamboos were saved from felling since the initial supply of CGI sheet. However, effective roofing has led to the construction of the illegal permanent concrete huts in the Tsamdro (pastureland) and changes in the architectural designs of their native houses. The need of proper drainage system was also observed as important to reduce the gully erosion from CGI sheet roof run-off.

Macro-microscopic Atlas on Heartwood of Pterocarpus santalinus L.f. (Red sandalwood)

2021 ◽  
pp. 3927-3930
Author(s):  
Susikumar S ◽  
Nartunai G ◽  
Ilavarasan R
Keyword(s):  
Wound Healing ◽  
Medicinal Plant ◽  
Calcium Oxalate ◽  
Tamil Nadu ◽  
Andhra Pradesh ◽  
South India ◽  
Deciduous Tree ◽  
Starch Grains ◽  
Herbal Formulation ◽  
Pterocarpus Santalinus

Background: Pterocarpus santalinus L.f. (Fam. Leguminosae) is a medium sized, deciduous tree distributed in South India mainly in Andhra Pradesh, Karnataka and Tamil Nadu. The heartwood is highly prized and medicinally useful. The heartwood is used in Indian system of medicine for leucorrhoea, piles, syphilis, vomiting, fever, thirst, purifying blood and in wound healing. Pterocarpus santalinus is one of the ingredients in many Siddha and Ayurvedic formulations namely Cintil Ney, Senchandana Manapagu, Candana Bala, Laksadi Taila and Candanadi lauha. Objective: The present study brings out macro-microscopic atlas on heartwood of medicinal plant Pterocarpus santalinus L.f. Materials and Methods: Sections and powder were observed and photographed under different magnifications with the help of Olympus BX51 Microscopic unit fitted with Olympus Camera. Results: Macroscopically colour, odour and taste; microscopically tyloses, needle eye end fibres, forked fibres with pegged and sharp end, pitted and border pitted vessels, uni-seriate medullary rays, Reddish brownish content, oil globules, simple starch grains, crystal fibres and prismatic crystals of calcium oxalate are the unique diagnostic characters reported. Conclusion: The finding of the present study is believed to be helpful in identifying the genuineness of the heartwood in crude raw drug and also in standardization of herbal formulation containing red sandalwood as ingredient.

scholarly journals Projecting population distribution under depopulation conditions in Japan: scenario analysis for future socio-ecological systems

2020 ◽  
Vol 16 (1) ◽  
pp. 295-311 ◽  
Author(s):  
Keiko Hori ◽  
Osamu Saito ◽  
Shizuka Hashimoto ◽  
Takanori Matsui ◽  
Rumana Akter ◽  
...  
Keyword(s):  
Urban Areas ◽  
Population Distribution ◽  
Natural Capital ◽  
Simulated Population ◽  
Projection Model ◽  
Distribution Maps ◽  
Scenario Analyses ◽  
Population Loss ◽  
Density Population ◽  
Future Population

AbstractThis study develops a projection model of future population distribution on the basis of Japan’s current depopulation trend and applies this model to scenario analyses that assume population compactification and dispersion. The model enables a description of population migration at two levels. First, municipal populations are projected using the cohort-component method, and second, the spatial distribution of populations within municipalities is projected at a 500 m grid resolution with the use of the gravity model. Based on the Japanese depopulation context and the country’s National Spatial Strategy, the compact scenario predicts the formation of medium-scale regional urban areas (population centers located across Japan) and the concentration of people on high-density population areas within municipalities. Meanwhile, the dispersed scenario predicts the formation of more but smaller regional urban areas and the dispersion of the population to low-density areas. The simulated population distribution for 2050 reveals spatial change in population density and age structure, as well as an abundance of areas that were inhabited in 2015 but will be zero population areas by 2050. Overlay analysis of future land use maps and the simulated population distribution maps can contribute toward identifying areas where natural capital such as farmland and forest plantation should be managed but where there will be significant population loss by 2050.

Sign in / Sign up

Export Citation Format

Share Document