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Vocabulary. Match the words with their definitions. 1) pol

gravity-fed ponds пруды с подачей самотеком
flow-through raceways рыбоходные каналы, лотки
recirculation tanks рециркуляционные емкости

Match the words with their definitions.

1) polyculture a) area committed to extensive aquaculture holdings at a fish farm or company.
2) recirculating system b) The raising of two or more species in the same aquaculture system. It may involve animals, plants, or plants and animals together.
3) net-pen system c) These systems are closed, or semi-closed, systems in which most, or all, of the water is recirculated throughout the system and very little is discharged.

Answer the questions

1. What is policulture?

2. What are the most popular culture units?

3. What can cause a poor water quality?

MANAGEMENT OF CULTURE SYSTEM

Read the following international words and translate them.

Culture, system, to address, term, temperature, virtually, basically, types, optimum, stress, information, status, atmosphere, element, photosynthesis, diffusion, million, organisms, concentration, seasonally, climates, energy, problem, biomass, ionized, factors, nitrate, bacteria, system, toxicity, interest.

Give Russian equivalents of the following words and word combinations.

Water quality, dissolved oxygen and ammonia, under certain circumstances, a good indication, cold-blooded species, warm-water species, fresh water shrimp, optimum temperature, mid range species, disease resistance, valuable information, blood stream, daily changes, light energy, oxygen production, the lowest level, cloudy days, clear days, high density, different tolerance for ammonia.

9.3 Read the following Latin words in singular and plural:

Optimum- optima, bacterium-bacteria, fungus- fungi, ammonium-ammonia.


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