AQUACULTURE http www nmfs noaa govaquaculture AQUACULTURE Aquaculture

AQUACULTURE http: //www. nmfs. noaa. gov/aquaculture/

AQUACULTURE Aquaculture: The cultivation of seafood under controlled conditions. http: //www. nmfs. noaa. gov/aquaculture/

AQUACULTURE Which ones are extensive examples?

AQUACULTURE Which ones are extensive examples?

AQUACULTURE SEMI Which ones are intensive examples?

Dirty Jobs, Fish Farm • https: //www. youtube. com/watch? v=o 8 s 1 J NQxn. U 8 • Watch the clip on the fish farm. – Where is this? – Would you classify it as intensive of extensive? Why? – What are some concerns on the fish farm, and with aquaculture in general?

Why Do Farmers Face Economic Difficulties? • Challenges for subsistence farmers – Population growth – International trade – Drug crops

Drug Trade Columbia, Peru, Bolivia Afghanistan Figure 10 -27

Source, United Nations: Poppy Field in Afghanistan

Heroin Highways NBC New Video https: //www. youtube. com/watch? v=BCTb. Oz. Ub. Pm. Y Herointown, NJ. com Article http: //www. nj. com/news/index. ssf/2015/12/herointown_nj_the _states_heroin_crisis_in_10_graph. html

Why Do Farmers Face Economic Difficulties? • Challenges for commercial farmers – Overproduction • Agricultural efficiencies have resulted in overproduction • Demand has remained relatively constant – As a consequence, incomes for farmers are low – Sustainable agriculture • Sensitive land management • Integrated crop and livestock

Why Do Farmers Face Economic Difficulties? • Strategies to increase food supply – Expanding agricultural land • Desertification

Four strategies to increase food supply 1. Expanding the land under cultivation n Remaining land can be of poorer quality 2. Increasing the productivity of existing agricultural land n Requires energy- and resource-intensive fertilizers and machinery 3. Identifying new food sources n Subject to cultural preference 4. Increasing trade

n Increasing productivity • The Green Revolution

Agricultural Land Population ! Figure 10 -28

Since the 1980 s, population has increased more rapidly than food production.

Food production in the region has tripled over the past halfcentury, but population has grown faster.

Food production in the region has tripled over the past halfcentury, but population has grown faster.

n Identifying new food sources n Cultivating Oceans n Increase in annual Fish Catch Over the past half century, the world fish catch has increased nearly five times over.

n Identifying new food sources n n Developing High Protein Cereals Improving the Palatability of Foods • Exoskeleton to be removed • Frozen almost immediately • An acquired taste!

People in MDCs obtain protein by consuming meat, but people in LDCs generally rely on wheat, corn, and rice, which lack proteins.

Where Weed-killer Won’t Work http: //www. nytimes. com/interactive/2010/05/03/business/weedsgraphic. html? ref=energy-environment

Grain Imports and Exports Figure 10 -32

• http: //green. blogs. nytimes. com/2011/06/10/world-food-supply-whats-to-be-done/ • The Global Food Crisis, Mapped • http: //green. blogs. nytimes. com/2011/08/03/the-global-food-crisis-mapped/ http: //www. oxfam. org/en/grow/food-price-volatility-map http: //www. bbc. co. uk/news/world-asia-17219009