How is overfishing killing coral reefs?

How is overfishing killing coral reefs?

Disrupts the food web and ecosystem balance. By reducing or removing a specific species, overfishing changes the coral reef food web. For example, removing an algae eating species, like parrot fish, could create conditions where algae may replace corals.

How does dynamite fishing threaten coral reefs?

Destructive fishing methods include the use of explosives to kill or stun fish, which destroys corals. This method, called blast or dynamite fishing, shatters coral colonies and kills the coral tissues on adjacent colonies. Cyanide that is sprayed or dumped on reefs can damage and kill corals.

How does overfishing destroy ecosystems?

Overfishing is the act of catching more fish than a population can reproduce and, currently, it is leading to the overall eradication of oceanic ecosystems. When large populations of fish are removed from reefs, it throws off the natural balances, which results in a domino effect across the ecosystem.

Is overfishing destroying the ocean?

Overfishing and destructive, wasteful fishing practices are threatening the health of our oceans and food security for communities everywhere. Overfishing is threatening food security for hundreds of millions of people and destroying ocean ecosystems worldwide.

What is effects of dynamite fishing?

Dynamite fishing is a major conservation concern as the blasts from the bombs fragment the calcium carbonate coral skeletons and reduce the reefs to rubble. This destroys important habitat and nesting sites for many fish and invertebrate species.

How does Dynamite Fishing happen?

Blast fishing, also known as dynamite fishing, is a highly destructive, illegal method of catching fish which uses dynamite or other types of explosives to send shock-waves through the water, stunning or killing fish which are then collected and sold.

How does overfishing affect our ocean and marine biodiversity?

An Utter Imbalance of the Marine Ecosystems Also, when a particular species of fish is caught repeatedly and in an unchecked manner, the food chain of the waterbody is affected too. As a result of that, many other species of fishes dependent on that one particular species suffers due to the lack of food and dies.

How are coral reefs under threat?

Coral reefs face many threats from local sources, including: Physical damage or destruction from coastal development, dredging, quarrying, destructive fishing practices and gear, boat anchors and groundings, and recreational misuse (touching or removing corals).

How destructive is overfishing?

Currently, less than two percent of our oceans are set aside as marine reserves, making it all too easy to exploit their resources. Overfishing is threatening food security for hundreds of millions of people and destroying ocean ecosystems worldwide. …

How does Dynamite Fishing affect the hydrosphere?

Dynamite fishing creates a wave of destruction. It not only threatens coral reefs, but it also leads to a decline in fish populations, affects coastal communities and small fisheries trying to compete with industrial trawlers, and has a negative impact on the tourist industry.

What are the negative effects of destructive fishing on marine ecology?

Over-fishing causes a cascade of effects in marine communities that can destroy habitats and result in the loss of biodiversity both in terms of overall abundance and species richness (Coleman, 2002). Not only does over-fishing destroy marine ecosystems, it also impacts food security for people.

Why is dynamite fishing harmful?

Blast fishing destroys the calcium carbonate coral skeletons and is one of the continual disruptions of coral reefs. In the Indo-Pacific, the practice of blast fishing is the main cause of coral reef degradation. As a result, weakened rubble fields are formed and fish habitat is reduced.