Marine Fisheries Food Webs
Download 280.37 Kb.
|
- Navigate this page:
- Questions—Marine Food Webs and Overfishing
Marine Protected Areas Marine protected areas are places where human activity/interference is strictly limited. The rules vary, but usually they put restrictions on oil/gas mining, tourism, and other activities. In some MPA’s, people are not allowed to fish in these areas (called a “no-take” zone). As of 2010, the world hosted more than 6,800 MPAs, encompassing 1.17% of the world's oceans. MPAs have also been recognized as an effective tool to maintain localized fish populations. The general concept is to create an area where the local populations of sea creatures can thrive and create a localized over-population. When this over population occurs, the extra creatures will expand into the surrounding areas, known as spillover. This, in turn, helps support the local fisheries and the areas surrounding the MPA, while maintaining a healthy population. Such uses of the MPA have been seen in many areas around the world, but most commonly in very densely population areas like coral reefs. Marine Protected Areas are an especially important management tool for coral reef systems worldwide. Over the past two centuries, coral reef systems have been in great decline due to overfishing and pollution. Currently, 30% of the world’s reefs are already severely damaged, and approximately 60% of the reefs will be lost by 2030 if actions are not taken to recover and protect them. Coral Reef Systems are also facing extinction due to changes in the chemistry of the ocean and the rising ocean temperatures, both caused by global climate change. Marine Protected Areas are currently the best tool for managing the impacts to coral reefs, with “No Take Zones” acting as the most effective form of management. Though Marine Protected Areas and No-Take Zones cannot stop the effects of global climate change, these management tools can protect the coral reefs from human damage and exploitation, allowing the reefs and the species they house to build resilience to recover to the changes brought by global climate change more effectively and rapidly. 
Name: _____________________________________ Date: __________ Period: _____ ASSIGN Questions—Marine Food Webs and Overfishing Underline things you already knew. Circle things you didn’t know (at least 5 for each. Don’t say you know it all!). What is a microbe? _______________________________________________________ How do microbes relate to the ocean (marine) food web? Phytoplankton are producers/consumers (circle one). Where are they most common? Are zooplankton plants or animals? ______________________________________ What are copepods? Why are they important? Give 3 examples of small predators that eat zooplankton. _____________________________ _____________________________ _____________________________ Give 3 examples of top predators. _____________________________ _____________________________ _____________________________ How do the animals listed in the article interact in a marine food web? Which is more complex, food chains or food webs? ______________________________ Explain why removing cod and/or other large fish from the ecosystem on the East Coast of Canada changed the entire ecosystem. (HINT: use your notes!) What is “fishing down the marine food web?” What is trawling and why is it a problem? (bottom of page 3) 
Look at the food web to the right. Translate the food web into a paragraph on a separate sheet of paper What is a Marine Protected Area (MPA)? What happens to the fish population in an MPA? Currently, what % of the world’s coral reefs are damaged? What is the most effective way to protect coral reefs? On a separate sheet of paper, draw a food web based on the organisms in steps 1-4 in the article. You should include at least 8 organisms. Directory: cms -> lib -> NC02214550 -> Centricity -> Domain lib -> 1. naclo 2017 – North American Computational Linguistics Olympiad lib -> Chem I honors Unit 2 Notes: Numbers in Chemistry Measurement lib -> Sanderson High School ap human Geography Summer Assignment 2016 lib -> Find fantastic ousd elementary music programs lib -> American Studies Pacing Calendar 2014-2015 lib -> The ap history Timeline 8000bce-the Present lib -> Absolutism in Europe Domain -> Weather Study Guide Part 2 What is a stationary front? Domain -> Application for the illest road trip of all time Download 280.37 Kb. Share with your friends:
|