AGE 407 — Forestry and Wild Life Conservation: Lecture Note

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AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Course code: AGE 407 Course title: Forestry and Wild Life Conservation Course credit load: 2 Units Series 1: Principles of Forestry and Conservation • Part 1.1: Introduction to Forestry o Sub Part 1.1.1: Meaning and scope of forestry o Sub Part 1.1.2: Importance of forests o Sub Part 1.1.3: Forest types in Nigeria • Part 1.2: Principles of Ecology o Sub Part 1.2.1: Ecosystem concepts o Sub Part 1.2.2: Energy flow and nutrient cycling o Sub Part 1.2.3: Ecological succession • Part 1.3: Identifying Native and Non-Native Plants o Sub Part 1.3.1: Herbaceous plant identification o Sub Part 1.3.2: Woody plant identification o Sub Part 1.3.3: Native versus introduced species • Part 1.4: Conservation Concepts o Sub Part 1.4.1: Meaning and goals of conservation o Sub Part 1.4.2: Conservation versus preservation

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS o Sub Part 1.4.3: Conservation challenges in Nigeria Introduction Forests and the wildlife they support provide timber, non-timber products, ecological services (water regulation, soil protection, carbon storage), and biodiversity habitat essential to both human wellbeing and ecosystem function. AGE 407 introduces forestry and wildlife conservation together, recognising that sound forest management and effective wildlife conservation rest on shared ecological principles. This opening Series covers the meaning, scope, and importance of forestry, and the major forest types found in Nigeria; the foundational principles of ecology, including ecosystem concepts, energy flow, and succession; the identification of native and non-native herbaceous and woody plants; and the meaning, goals, and challenges of conservation. This foundation supports the forest resource management, wildlife ecology, sustainability, and rangeland topics covered in the remaining four Series. Series Learning Outcomes Upon completing this Series, you should be able to: • SLO 1.1 explain the meaning, scope, importance, and types of forestry and forests in Nigeria (Linked to Part 1.1), • SLO 1.2 explain ecosystem concepts, energy flow, nutrient cycling, and ecological succession (Linked to Part 1.2), • SLO 1.3 identify native and non-native herbaceous and woody plants (Linked to Part 1.3), and • SLO 1.4 explain the meaning, goals, and challenges of conservation (Linked to Part 1.4).

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS 1.1 Introduction to Forestry 1.1.1 Meaning and scope of forestry Forestry is the science and practice of managing forests and woodlands for the sustained production of timber, non-timber products, and ecological services, while maintaining forest health and, where relevant, biodiversity and wildlife habitat value; it encompasses silviculture (the cultivation and tending of forest stands, examined in Series 2), forest protection (from fire, pests, and disease), harvesting and utilisation, and the broader management planning integrating these activities over time. Forestry scope extends from natural/indigenous forests (managed with varying degrees of human intervention) to plantation forestry (deliberately established, often single-species stands managed intensively for specific production goals) and agroforestry (deliberately combining trees with crops or livestock on the same land, examined further in Series 2), reflecting a spectrum of management intensity and integration with other land uses relevant to Nigerian forestry practice. Fill in the blank: Forestry encompasses silviculture, forest protection, harvesting and utilisation, and management planning integrating these activities for the sustained production of timber, non-timber products, and ________ services. 1.1.2 Importance of forests Forests provide direct economic value through timber (construction, furniture, fuelwood) and non-timber forest products (Series 2: fruits, medicinal plants, fibres, resins); they also provide essential ecological services including water cycle regulation (forested watersheds typically show more stable streamflow and better water quality than deforested equivalents), soil erosion control (root systems and canopy cover protecting soil from rainfall impact and runoff), carbon sequestration (forests storing substantial atmospheric carbon, relevant to climate change mitigation), and biodiversity habitat (Series 3). Forests also hold social and cultural value (recreation, spiritual/cultural significance in many Nigerian communities, and traditional livelihood support) and, increasingly, climate regulation

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS value at both local (microclimate moderation) and global (carbon cycle) scales, making forest loss (deforestation, a significant ongoing concern in Nigeria and across much of West Africa) a multidimensional loss extending well beyond the directly harvestable timber value. Fill in the blank: Forested watersheds typically show more stable ________ and better water quality than deforested equivalents, illustrating the water cycle regulation service forests provide. 1.1.3 Forest types in Nigeria Nigeria forest cover is distributed across several broad vegetation/forest zones correlating with the rainfall and agro-ecological zones introduced in related crop production courses: the mangrove and freshwater swamp forests (coastal and riverine areas, southern Nigeria); the lowland rainforest/humid forest zone (high rainfall southern Nigeria, historically Nigeria most extensive forest type, though substantially reduced through conversion to agriculture and other land uses over recent decades); and the derived savanna and Guinea savanna woodlands (middle belt, a transitional zone between forest and savanna reflecting both natural ecological gradient and historical forest clearance). Forest reserves and national parks (areas formally designated for forest/wildlife protection and, in the case of forest reserves, managed timber production, Series 2-3) represent the formal institutional framework for Nigerian forest management, though substantial forest area outside these formally protected/managed areas remains subject to less regulated use and conversion pressure, a recurring theme in the sustainability challenges examined in Series 4. Fill in the blank: The lowland rainforest/humid forest zone of southern Nigeria has historically been Nigeria most extensive forest type, though substantially ________ through conversion to agriculture and other land uses.

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Figure 1.1: Introduction to forestry Pilot questions 1.1 1. Define forestry and name three activities it encompasses. 2. Name three ecological services forests provide. 3. Distinguish between natural forest, plantation forestry, and agroforestry. 4. Name three forest/vegetation zones found in Nigeria. 5. Explain the role of forest reserves and national parks in Nigerian forest management. 1.2 Principles of Ecology 1.2.1 Ecosystem concepts An ecosystem is a community of interacting organisms (plants, animals, microorganisms) together with their physical environment (soil, water, climate), functioning as an interdependent unit; ecosystems are organised hierarchically from individual organisms, through populations

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS (groups of the same species) and communities (multiple species populations interacting in a given area), to the ecosystem level itself, and ultimately the biosphere (the sum of all Earth ecosystems). Habitat (the specific physical environment a species requires, including food, water, shelter, and space) and niche (a species specific functional role within its ecosystem, including its habitat use, feeding behaviour, and interactions with other species) are foundational ecological concepts directly relevant to the wildlife habitat and species requirement topics examined in Series 3. Fill in the blank: An ecosystem is a community of interacting organisms together with their physical ________ , functioning as an interdependent unit. 1.2.2 Energy flow and nutrient cycling Energy flows through an ecosystem in one direction, originating from solar energy captured by primary producers (plants, through photosynthesis) and transferring (with substantial loss at each transfer, generally only about 10 percent of energy passing to the next level) through successive trophic/feeding levels (herbivores, then carnivores/predators), explaining why ecosystems typically support far fewer top predators than primary producers, a foundational concept relevant to wildlife population dynamics examined in Series 3. Unlike energy, nutrients (carbon, nitrogen, phosphorus, and others) cycle repeatedly through an ecosystem rather than flowing in one direction, moving between living organisms and the physical environment (soil, water, atmosphere) through processes including decomposition (breaking down dead organic matter, releasing nutrients back to the soil/environment) and various specific biogeochemical cycles (the carbon cycle, the nitrogen cycle, introduced for crop production contexts in related agricultural courses). Fill in the blank: Energy flows through an ecosystem in one direction with substantial loss at each transfer, generally only about ________ percent passing to the next trophic level.

AGE la-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS 1.2.3 Ecological succession Ecological succession is the gradual, predictable process of ecosystem/vegetation community change over time following a disturbance or on newly available substrate; primary succession occurs on substrate with no prior soil/vegetation (such as after a volcanic eruption or on newly exposed rock), while secondary succession occurs on previously vegetated land following disturbance (fire, logging, agricultural abandonment, the form of succession most relevant to most Nigerian forest disturbance and recovery contexts). Succession typically progresses through identifiable stages (pioneer species colonising disturbed/bare ground, followed by progressively longer-lived and more complex vegetation communities) toward a relatively stable climax community (the vegetation type that, in the absence of further major disturbance, would persist long-term under the prevailing climate and soil conditions of a given site), a concept relevant to understanding both natural forest regeneration and the deliberate management interventions examined in Series 2. Fill in the blank: ________ succession occurs on previously vegetated land following disturbance such as fire or logging, the form of succession

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