Bioindicators
Bioindicators are compared to tiny detectives.
Why they provide clues about the state of the environment?
____are mainly responsible for global warming
What are humans?
Are tiny plastic particles ingested by small marine organisms, which are then eaten by larger predators.
What are microplastic?
These are large plastic items like bottles, bags, and fishing nets can entangle marine animals and damage habitats.
What are macroplastics?
It occurs when fishing activities deplete fish populations faster than they can naturally replenish.
What is Overfishing?
This is what bioindicators tell us about an ecosystem.
What is the health f the ecosystem?
There are two natural causes of climate change.
What are changes in the sun’s activity or large volcanic eruptions?
Excess nutrients from agricultural runoff and sewage can cause algal blooms, which deplete oxygen levels in the water and create ________________
What are "dead zones" where marine life cannot survive?
These critical habitats can be smothered by sediments and pollutants, reducing their ability to support marine life.
What are Seagrass Beds and Mangroves?
This is the most serious threat to the oceans.
What is overfishing?
Indicates an abundance of algae in a lake.
What is an excess of nutrients from agricultural runoff?
It generates greenhouse gas emissions that act like a blanket wrapped around the Earth, trapping the sun’s heat and raising temperatures.
What is burning fossil fuels?
The decomposition of algae consumes oxygen, leading to hypoxic conditions that can kill fish and other marine organisms
What is hypoxia?
Nutrients from fertilizers and other sources in runoff can lead to excessive growth of algae in water bodies. This process can deplete oxygen levels in the water, harming fish and other aquatic organisms
What is eutrophication?
It's a description of all the stages that an organism goes through in its life
What is the life cycle of an organism?
This is how bioindicators can be used to monitor the effectiveness of conservation efforts.
What is by tracking changes in population of threatened species?
These are among the main sectors causing greenhouse gases.
What is energy, industry, transport, buildings, agriculture and land use?
Types of marine waste:
Mention at least 3
What are plastics, chemicals, organic waste (sewage, food waste) Marine debris, radioactive waste.
BMPs can include measures like pollution prevention practices, proper waste handling, and maintenance of equipment to minimize leaks and spills.
What is Best Management Practices (BMPs)?
These are some initiatives to reverse the damage caused by overfishing:
Mention at least 3
Fisheries Management Reforms, Marine Protected Areas, Sustainable Fishing Practices, Consumer Awareness and Education, and Fighting Illegal Fishing,
A decline in biodiversity is a sign of this.
What is a decline in ecosystem health?
The emissions that cause climate change come from every part of the world and affect everyone, but some countries produce much more than others. The six biggest emitters are.
What is China, the United States of America, India, the European Union, the Russian Federation, and Brazil?
These are sources of marine waste:
Mention at least 3.
What is Land-based sources, urban runoff, industrial discharge accident spill, agriculture runoff, and atmospheric deposition.
Factories and industrial facilities sometimes discharge waste directly into rivers, lakes, or coastal waters. This can include:
What are chemicals, heavy metals, and other pollutants?
To produce fish and shellfish successfully by aquaculture, there are several requirements:
Mention at least 3
What are Water Quality Management, Feeding and Nutrition, Health Management, Habitat and Infrastructure, Broodstock Selection, Legal Compliance