Tag Archives: pollutants

Macrozoobenthos as an Indicator of Environmental Pollution

food chain indicationsTerritorial waters is a medium that is susceptible to contamination. Various types of pollutants from sources both residential, industrial, natural phenomena, and others are entering the water body. After accumulating the direct or indirect pollutants will affect the water quality.

For those who like diving definitely want to get a beautiful dive spot. The beauty of the underwater environment will not be found in the polluted water territorial. It’s good to learn about bio-indicators of pollution that can be used as reference waters. One way to learn about the macrozoobenthos.

Zoobenthos are animals that some or all of their life cycle in the bottom waters, either sessile, crawling and digging holes. Macrozoobenthos organisms included are : Crustacea, isopoda, decapoda, oligochaeta, molluscs, nematodes and annelids. Benthos classification according to size :
1. Macrobenthos are benthos that have a size greater than 1 mm (0:04 inches), for example worms, pelecypod, sponges, anthozoa, ascidians, echinoderms, and crustaceans.
2. Mediobenthos are benthos that have a size between 0.1 – 1 mm, sort of polychaete, palaecypoda, copepods, ostracoda, cumaceans, nematodes, turbellarian, and foraminifera.
3. Microbenthos are benthos have a size smaller than 0.1 mm, for example, bacterial, diatoms, ciliate, amoebae, and flagellates.

Benthic animals are relatively sedentary life, so it’s good to use as a guide the quality of the environment, because it is always in contact with the waste that goes into their habitat. The animal groups can better reflect the change in the environmental factors from time to time due to continuous benthic animals are in the water quality changes.
The existence of benthic animals in a body of water, is strongly influenced by various environmental factors, both biotic and abiotic. Biotic factors that influence them is a manufacturer, which is one source of food for benthic animals and species interactions and patterns of life cycle of each species in the community. The abiotic factors are the physical – chemical water include : temperature, flow, dissolved oxygen (DO), biological oxygen demand (BOD) and chemical (COD) and nitrogen (N), water depth, and the base substrate.

Macrozoobenthos can be tolerant and sensitive to environmental changes. Organisms that have a wide tolerance range will have a widespread distribution as well. Conversely a narrow tolerance range of organisms (sensitive) then spread too narrow. Macrozoobenthos who have a higher tolerance then the survival rate will be higher. The level of pollution of the waters can be seen with the identification of macrozoobenthos were found in the region.

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Aquatic Ecosystems

aquatic ecosystemsTalking about aquatic ecosystems, it means that the overall water ecosystems, whether on land, such as rivers, lakes, marshes, and of course the ocean. Trying to understand how they are interrelated to each other, understand each role.

It is important to understand about how the ecosystem work, in order to develop knowledge about how good ecosystem management, gave an overview to make policy, to then be able to take the most appropriate action to protect the aquatic ecosystems.

The water supply is closely related to the life aquatic ecosystems and ecosystem sustainability in a broader sense. Nature has a system and a unique and powerful mechanism to perform its function as a giant water filter and as a means of re-charger reserves of freshwater resources that are necessary for life.

Water stored in the soil in addition to functioning as a backup source of fresh water, also has an important role in maintaining the shape and construction of the land, and to prevent, reduce, or slow the occurrence of abrasion. Excessive exploitation of ground water will trigger the seep of sea water, far into the inland region, and accelerate the decline in soil surface.

Aquatic ecosystems are composed of various components that are inside, such as rocks, plants, animals, micro-organisms, etc.. The existence of living creatures in aquatic ecosystems can be used as a measure of the damage. This is something that really makes sense, when an ecosystem contaminated by pollutants then it will reduce the quality of life of living things in it.
aquatic ecosystems
From a few decades ago, the number and diversity of pollutants has increased significantly. These pollutants not only micro-organisms such as parasites, but also heavy metals and synthetic chemicals.

The most dangerous pollutants usually come from plant waste are thrown away without a proper sewage treatment system. Next came the threat of pollutants from transportation and waste from households. In large quantities, the resulting pollutant transport system and household no less dangerous than sewage plant. It is certain that ecosystem damage will occur very alarming.

Ecosystems like a chain of life that are strongly interlinked to form an unbroken perfect circle. And aquatic ecosystems is one part of the chain.

Damage to aquatic ecosystems can be described as the breaking chain of life, and it means a threat to the survival of all living creatures that exist in this world.

It will be recalled that the water is a very important element for the survival of life. When we preserve the aquatic ecosystems, then that means that maintained the continuity of life.

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