4. What is RESOURCE MANAGEMENT./
-is concerned with ASSESMENT,
UTILIZATION, and
CONSERVATION of a resource (water
resource e.g., lakes, rivers, swamps, etc.)
with the objectives of maintaining the
resource to provide the maximum
sustainable yield.
5. ASSESMENT
- it includes the collection and evaluation of facts
concerning the resource, based on basic statistics
on the physical to chemical and biological aspects
of the resource. This may also included the
socioeconomics, marketing and utilization aspects.
13. CONSERVATION
- includes the aggregate of the measures rendering
possible of optimum sustainable yield from those
resources so as to secure a maximum supply of food and
other fishery products.
14.
15. 1. Describing stocks of wild animals and plants with respect
to their abundance migration, distribution, behavior, size,
age, composition, rate of growth, and rate of mortality.
2. Describing the environmental factors that limit the stocks.
3. Describing kind distribution, and cost of fishing.
4. Protecting and enhancing the environment.
16. -each stocks mentioned, contributes to vital information
needed to estimate the yield from the stocks from natural
events and amount of fishing. The findings are used for
decisions either to encourage harvest of underscored
resources or restrain harvest of over-used resources. Data
collected may provide information for planning, in order to
maximize the utility of the resource. Some environmental
changes can be made to enhance the production and evaluate
the benefits of environmental changes.
(reference:Royce, W. 1972)
17.
18. - it includes all physical, chemical, and
biological characteristics of water.
19. 1. TEMPERATURE – is a property that measures the
amount of heat absorb by water.
2. DENSITY – is mass of water per unit volume.
3. COLOR – result from the unabsorbed light rays
remaining from incident light.
(a.) TRUE COLOR – is caused by substances in
the solution or in colloidal suspension.
(b.) APPARENT COLOR – is caused by suspended
particulate matter.
4. TURBIDITY – refers to decreased ability of water to
transmit light. It measure the transparency of water.
20. 1. The amount of gases dissolved in water such as oxygen,
and carbon dioxide.
2. ph - the amount of hydrogen-ion concentration or it is
a measure of acidity and basicity of water.
3. SALINITY – the total concentration of a ionic
constituents present in a water sample.
4. Amount of nutrients dissolved in water e.g. phosphorus,
nitrogen, potassium, and other minor nutrients.
5. TOTAL ALKALINITY – he total concentration of bases in
water expressed as mg/1 as CaCO3.
6. TOTAL HARDNESS – total concentration of alkaline
earth ions expressed as mg/1 as CaCO3.
7. TOTAL SOLIDS – the amount of total residue left upon
evaporation.
21. The most critical aspects of biological of water
quality is the ecology of phytoplankton and
aquatic macrophytes.
23. MACROPHYTES
.– are vascular
plants including
floating, rooted
and submerged
vegetation, other
organisms,
zooplankton,
and other
animals affect
water quality
too.
24. - is the end result of interaction of the organism and its
environment.
- it is the outcome of the struggle of the organisms to
exist against the pressures exerted by the environment.
- it is measured in terms of biomass and standing crop
per unit of time.
