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a. Algae Ectocarpus Ectocarpus sp. is one type of brown algae (Phaeophyceae). Brown algae commonly found in the sea, attached to the rocks and often stranded on the beach. Body shape resembles a higher plants because it has a tool similar roots, stems and leaves. Thallusnya length can reach 10 meters. The brown algae contain chlorophyll because in addition also ...

Symptoms of seaweed damage caused by predation can be grouped based on their characteristics to identify pests that attack seaweed. Grouping based on characteristics are: a) Gouging (blister) is a small wound on thalus seaweed, slightly flaky pigment layer as if no damage. This attack can be caused by slugs or sea star larvae b) Planing, shows damage such as ...

Dam can be classified according to the structure, purpose or altitude. Based on the structure and the materials used, the dam can be classified as a wooden dam, “embankment dam” or “masonry dam”, with various subtypes. The goal made including providing water for irrigation or urban water supply, improving navigation, generate hydroelectric power, creating recreation areas or habitat for fish ...

Pests and diseases can cause damage to the seaweed, this is because the pest seaweed is seaweed grazer so consumed by pests that exist in the location of cultivation. There is also a pest seaweed that are attached to the thallus kelp, this causes seaweed thallus can not receive nutrients and oxygen available in the water to the optimum because ...

Dikes have another name levee, dike, embankment, which is a sort of slanted walls either artificial or natural, is used to regulate the water level. Usually made of soil and often are constructed parallel to the river or beach body. The word dike probably derived from the Dutch word dijk, where the construction of the embankment has happened since 12.Bangunan ...

Drainage and irrigation channels is intended to drain the excess water so it does not damage the soil, plants, and other conservation or building. The forms of drainage and irrigation channels: a. channel dodger function: • Prevent the entry of surface runoff from the area above it to the bottom of landslide-prone areas. • Drain excess water into the sewers ...