Match the words with their definitions.

1) pond acreage	a) An aquaculture system that consists of mesh enclosures (or sometimes cages), typically placed in coastal areas. There is no effective barrier between the netpen interior and the ocean. Wastes are emitted directly into the surrounding waters.
2) fish nursery	b) One of the earliest types of aquaculture to be practiced. They can either be natural or artificially constructed. They are usually shallow, with sides that are not too steep in order to prevent erosion.
3) net-pen system	c) area committed to extensive aquaculture holdings at a fish farm or company.
4) pond system	d The outlet structures from an aquaculture pond or tank, including monk regulator, drain pipe and drain canal, allowing discharge or re-circulation, as required.
5) pond drainage system	e) The first production stage in fish farming, nursing fry (about 1.0 gram) to fingerling (60-100 gram).

8.6 Fill in the gaps using the words given below:

Pond ecology.The biological interactions occurring between different organism … developing within the aquaculture …, either intentional stocked populations and inadvertently inoculated. In open aquaculture …, this usually includes water …: algae primary producers, secondary producers and bottom populations which include … populations and higher organisms.

Bacterial, systems, ponds, populations, organisms, zooplankton.

Answer the questions

1) What is typical pond?

2) What should a well designed pond have?

3) What are raceways?

4) What are raceways used for?

5) Is die water exchanged in raceways or not?

6) What is the difference between cages and net-pens?

Read the text without a dictionary.

Читайте також:

<== попередня сторінка	\|	наступна сторінка ==>
Raceways.	\|	TYPES OF AQUACULTURE OPEATIONS

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