Population Structure, Age Gradations, and Regeneration Status of Pterocarpus dalbergioides Roxb., An Endemic Species of Andaman Islands, India
نویسندگان
چکیده
The increasing forest fragmentation rate stresses the necessity of conservation of species by restoring their habitat sites. Particularly, endemic species deserve much attention as they show a narrow range of distribution. The present study is focused on the population structure, age gradations, and regeneration status of Pterocarpus dalbergioides Roxb., an endemic species of the Andaman Islands. The results of this analysis showed Pterocarpus dalbergioides as a dominant species occurring in both Andaman semi evergreen and Andaman moist deciduous forests, contributing high stem density and basal area compared to other species. The study also provided information on regeneration status, indicating poor seedling and saplings growth of the species. Age structure study showed that it will take approximately 10 years for Pterocarpus dalbergioides to attain a girth of 30 cms and the species at the study site are about 150 years old. Finally, it is concluded that the species is affected by both logging operations as well as poor regeneration growth which may result in the extinction of this endemic species of Andaman Islands. (
منابع مشابه
A Hospital Based Bivariate Analysis of Nutritional Status and its Determinants among the Children Aged 2 to 12 Years in an Indian Island
Background: Malnutrition in children is a major public health problem in developing countries and is one of the common causes of mortality and morbidity in children. We aimed to determine the nutritional status of children aged 2-12 years of age using World Health Organisation(WHO) Z score for Weight for age (WFA)/Body Mass Index (BMI) for age (for children above 108 months), and to evaluate as...
متن کاملA Hospital Based Study on Anemia Prevalence in Children of an Indian Island
Background Anemia is a major public health problem in India, affects all age groups but children and women in childbearing age group are the most vulnerable. However, data from hospital patients of Indian islands are not available. We aimed to study the prevalence of anemia among children aged 2-12 years of age attending a tertiary care hospital (India). Materials and Methods A total of 444 chi...
متن کاملTribal Community Visit to Malaria-Endemic Areas Can Pose Risk to Car Nicobar Island: Deterrent for Malaria Elimination
Introduction: In the past 10 years, a declining trend was seen in the annual parasite incidence (API) of malaria in the Car Nicobar Island. For the past few years, the API in the island has been below one. Car Nicobar Island is struggling with malaria cases reported to have been brought from other, malaria-endemic islands. Methods: The movements of people...
متن کاملFormicidae of the Andaman and Nicobar Islands (Indian Ocean: Bay of Bengal)
Ants on the Andaman and Nicobar Islands, India were surveyed. These collections doubled the number of ant species recorded from these islands (from 59 to 125). Records include five endemic species, but no endemic genera. The surveys were fairly superficial, and it is likely many species remain to be discovered on these islands.
متن کاملOn the genus Calyptobates Polhemus & Polhemus (Hemiptera: Heteroptera: Gerridae) from India with description of a new species and a key to the species of World.
Calyptobates rajani sp. nov. is described from Great Nicobar Island, Andaman and Nicobar Islands, India. This new species is closely related to C. andaman Polhemus & Polhemus, 1994, described from Andaman Islands, India. Two species of Calyptobates Polhemus & Polhemus including the new species are presently known from India. A key to the species of Calyptobates from world and the distribution m...
متن کامل