Pasture range ecology and management
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PASTURE/RANGE ECOLOGY AND MANAGEMENT. DEPARTMENT OF FORESTRY AND WILDLIFE MANAGEMENT COLLEGE OF ENVIRONMENTAL RESOURCES MANAGEMENT UNIVERSITY OF AGRICULTURE, ABEOKUTA. Definition.

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Pasture range ecology and management

PASTURE/RANGE ECOLOGY AND MANAGEMENT

DEPARTMENT OF FORESTRY AND WILDLIFE MANAGEMENT

COLLEGE OF ENVIRONMENTAL RESOURCES MANAGEMENT

UNIVERSITY OF AGRICULTURE, ABEOKUTA


Definition

Definition

Range management can therefore be define as the manipulation of dependent and controlling factor of the range ecosystem in other to maintain an equilibrium.

  • Range can be define as the science and art of planning, directing range uses, so as to obtain and sustain animal production, consistent with the protection of a natural resource.

  • It can also be define as the manipulation or a collection of characteristics of ecosystems change for goods and Services required e.g meat, milk, wool etc.


Importance of range management

Importance of Range Management

Multivarious uses-livestock/wildlife product, meat, milk, & skinBag, belt, leather industry, shoes

Tourism (wildlife) Recreation

Environmental values-Watershed protection

Erosion control

Desertification control

Increase in soil fertility

Socio Economic -Generation of employment

Marriage – fulanis)

Sources of Income

Socio cultural (basis of social status)

Socio political -Socio dislocation

Socio conflict


Type of range disturbances

Type of Range disturbances

  • Timber exploitation

  • Firewood however, farming urbanization, and infrastructural development.

  • Result of Ecosystem disturbances

  • Ecological disaster Erosion Desertification and flooding.


Factors affecting range ecosystem

Factors affecting Range Ecosystem

FACTORMANUPULATION

  • Controlling factors:

    Climatic factorWeather modification, or burning, water spreading

    Geological materialsLand leveling, Terracing, fertilization, groundwater, recharge

    Available organisms Special introduction elimination and genetic improvement

    (Plant & Animal)

    B. Dependent factor

    Consumers

    Wild fauna Grazing management, wildlife management, insect and rodent control

    Livestock Grazing management livestock management disease control

    Vegetation Plant control, re-vegetation, hay management, control of plant disease

    Soil Mechanical treatment Nitrogen fertilization

    Decomposers & Transformers Direct manipulation

    Micro climate Shade shelter, mulching


Various types of vegetation

VARIOUS TYPES OF VEGETATION

  • Some of the vegetation are bush land, wood land, grass land, woody grassland, dwarf shrubs, grassland, permanent swamps and Barren land.

  • BUSH LAND: It consist of woody plant of mostly shrubs with canopy of less than 6m in height and canopy covers more than 20%

  • WOODLAND:This consist of woody plant up to 18m in height with an open or continuous but not close canopy. Grasses and herbs dominate the ground covers.

  • GRASS LAND: This is dominated by grasses and occasionally consist of other herbs.

  • WOODED GRASSLAND: Consist of grassland which scattered or group of Areas. The trees always conspicuous having canopy cover of less than 20%. Such area also are subjected to periodic burning.

  • DWARF SHRUB GRASSLANDS: This consist of poor land sparsely covered by shrubs & grasslands not exceeding 1m in height. Sometimes which widely scattered shrubs and or stunted trees.

  • PERMANENT SWAMPS: Consist of various types of communities associated by permanent stand of water and consist of sedges shrubs & aquatic plants. The area does not have animals but there could be climbing animals such as monkeys & lover reptiles.

  • BARREN LAND: Land naturally devoid or particular plant. Hence there would be absence of browsing animals but there can be aves and big animals like reptiles.


Factors affecting rangeland production

Factors Affecting Rangeland Production

  • Rainfall

  • Temperature

  • Relative humidity

  • Light


Edaphic factors soil factors

EDAPHIC FACTORS (Soil factors)

  • Soil moisture

    Simply means the amount of water retained by the soil after there is rain, evaporation, and leaching. This determine the capacity of the soil to support plant and hold nutrient. The land that usually leached easily will not have appreciable moisture capacity and hence will not be able to hold nutrient and water

  • Soil depth

    This is a measure of the extent of available soil for crop production/plant growth, from the surface of the soil is the unweathered zone beneath. There is considerable variation in soil depth even in the same area, it may be from a few cm (feet) to 40 feet.


Edaphic factors soil factors1

EDAPHIC FACTORS (Soil factors)

  • Soil PH

    Is the acidity and alkalinity nature of the soil the knowledge of soil pH help to prescribe necessary treatment for the soil and the plant if the need be.

  • Soil fertility

    Simply means how fertile the soil is. How rich in organic matter is the soil and how well a plant can grow in the soil without the application of either farmyard manure or

    inorganic fertilizer


Various grazing system

VARIOUS GRAZING SYSTEM

  • Rotational

  • Deferred rotational

  • Alternate or rest rotation

  • Continuous grazing

  • Seasonal grazing.


Grazing capacity

Grazing Capacity

  • Total no of animal that can graze in a particular range land without depleting the range resources.

  • (AUM) Animal Unit Month: is define as the dry weight of forage to provide for the animal in a unit month in a range land.

  • USE FACTOR: Is the percentage of herbage or browse which may be consider as forage with proper grazing management.


Method of range utilisation measurement

METHOD OF RANGE UTILISATION MEASUREMENT

  • AMethod based on before or after grazing or between grazed and ungrazed plots.

  • BMethod based on measurement correlation or regression or factors related to utilization

  • CMethod based on observation/general utilization and comparison with predetermines standard of utilization


Range improvement

RANGE IMPROVEMENT

Benefit of range improvement

1.The quality of forage: The production, accessibility and maintenance of adequate supply of high quality forage is the bases of successful operation and the production of livestock and wildlife

2. The quality of forage by providing forage of greater palatability of higher movement content and of longer green growth period.

3.The animal production: This is often the 1 goal

4.Facilitation handling and caring of range animal this keep livestock more famed and docile

5.Control poisoning of livestock by poisonous plants by removing poisonous plant or by replacing the existing vegetation which non poisonous spp or by providing alternative sources of plantation poisonous plant.


Range improvement1

RANGE IMPROVEMENT

6.Reduce fire hazard

7.These water yield or watershed by replacing woody spp which herbaceous plant

8.Control of insect on small animal by replacing their first plant often which desirable forage spp.

  • Control erosion: by stabilizing erosive soil on how potential or marginal site soil stabilization may justify restoration which only secondary consideration giving to forage production.

  • It reduces conflict between multiple uses of range resources. Access road can permit better distribution of livestock as well as proper harvesting of big game

    11. Reseeding the degraded ranges can provide needed forage for livestock and clean water for fishing stream


Selecting range improvement

SELECTING RANGE IMPROVEMENT

The type of range improvement must be carefully considered and properly located and utilized to give maximum benefit. Guide line to consider in selecting and locating range improvement include

1.Use only proven method except on small seal undertake project only where practical and economical procedure can be use.

2.Range improvement must be compatible, as goal of ownership

3.Availability of local or contract labour need equipment supervisory or consultative assistant needed must be ensure

4.Evaluate when range improvement can be most effectively utilize in the land or range management plan, determine the factor limit animal production that can be solved by range improvement.

5.Changing in management practices that will be required and maintenance that will be needed in other to obtain full benefit from the range improvement practices.


Selecting range improvement1

SELECTING RANGE IMPROVEMENT

6.Expected cost benefit ratio range improvement are adjudged to after the greatest return on the investment is given priority.

7.Applied range improvement at appropriate stages of range deterioration, invading poisonous plant should be treated when they 1st appear since control is generally much less costly and more effective at that time.

8.Amount and characteristics of residual forage cover its existing plant stand adequate to satisfactorily respond to range treatment or would seeding be additionally required.

9.Locate range development in an area of great potential for range productivity areas which shadow or infertile Soil low site potential, low rainfall or steep topography often produce too little forage to justify extensive treatment.

10.Plan livestock handling facility that are practically beneficial both to the range land and range animal

11.Do not create new grazing distribution problem by spot treatment such as herbicide spraying moving or fertilization or improper location of livestock handling facility.


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