A group of individuals of the same species in a specific area. Community: An assembly of interacting populations.
Soil degradation, chemical runoff from agriculture, and the psychological impact of noise. 5. Biodiversity Conservation and Resource Management
It is a core reference text for UPSC Civil Services, UGC NET, and state-level public service exams.
: Extensive chapters on air, water, and land pollution, global warming, climate change, and bioremediation. ecology and environment pd sharma pdf drive top
: Identification of critical global threats, including pollution, deforestation, global warming, and the depletion of natural resources.
The book's true strength lies in its comprehensive and logical structure. It begins with the fundamentals of ecology and gradually builds up to complex environmental issues, management strategies, and practical applications. Below is a detailed breakdown of its chapters based on a detailed review and library records:
These chapters bridge the gap between theory and real-world application: A group of individuals of the same species
The book has seen numerous revisions, each one updated to reflect the latest developments in the field. This ensures that the material remains relevant for current academic and competitive exam syllabi.
Readers gain insights into large-scale ecological threats including climate change, global warming, ozone layer depletion, and acid rain, alongside international treaties and protocols designed to combat them. Why the Book is Highly Sought After
Unlike some international textbooks that use region-specific examples unfamiliar to South Asian students, this book heavily features Indian ecological contexts, local environmental legislation, and regional case studies. Understanding the "PDF Drive" Search Trend Climatic factors (light
For those looking to acquire the text for study, it is available through several retailers: ECOLOGY AND ENVIRONMENT PD SHARMA 20 Nov 2025 —
Climatic, topographic, and edaphic (soil) factors that dictate where and how organisms survive. 2. Ecological Adaptations
| Part | Chapter Focus | Key Topics Covered | | :--- | :--- | :--- | | | Introduction & Ecological Factors | Basic concepts of ecology, environmental studies; Climatic factors (light, temperature, precipitation); Topographic factors (altitude, slope, orientation); Edaphic factors (soil science, structure, composition, conservation); Water regimes and ecological adaptations; Biotic factors (interspecific and intraspecific relationships like competition, predation, symbiosis) | | Part II: Species & Population Ecology | Autecology & Population Dynamics | Autoecology of species (ecological factors affecting life, biological clock, Liebig's law of the minimum); Ecological concept of species, ecotypes, ecads, ecological niche; Population characteristics (density, natality, mortality), growth forms, and regulation | | Part III: Community & Ecosystem Ecology | Community & Functional Aspects | Community characteristics, classification, and succession (dynamics); Ecosystem structure, function, and rate functions (energy flow, biogeochemical cycles); Ecology and ecosystem modeling | | Part IV: Habitat & Biogeography | Habitat Ecology & Biogeography | Habitat ecology (marine, estuarine, desert, terrestrial); Biogeography (interdisciplinary approach of botany, zoology, ecology, geography) | | Part V: Natural Resources & Conservation | Resource Management & Wildlife | Natural resources and their conservation (forest conservation laws, strategies); Wildlife management (protected areas, national parks, biosphere reserves, special projects); Energy resources (conventional and non-conventional sources) | | Part VI: Environmental Pollution & Toxicology | Pollution & Public Health | Environmental challenges and sustainable development; Air pollution and status of air quality in India; Water and solid waste pollution; Toxicology, ecotoxicology, and public health | | Part VII: Global & Developmental Issues | Climate Change & Development | Global warming and climate change; Environment and development: India's approach | | Part VIII: Management & Practicals | Monitoring, Education, Laws & Practicals | Environmental monitoring and impact assessment (biological monitoring); Environmental education and organizations; Environmental laws; Practical manuals and detailed account of practicals |