STUDY BACKGROUND AND TASKS FOR DSG R10811Prepared by Mar Valls, Naturkunskap handledare for

DSG R10811

Based on the task instructionsfrom the school Natuskunskap ledare

Octiber 2008

WHAT ARE WE GOING TO STUDY?

RESOURCES BACKGROUND:

different environments (abiotic & biotic factors)

different resources

different adaptations

different scenarios

RESOURCES BACKGROUND

Human is 100 % dependent upon natural resources ! Where do theseresources come from?

1. WATER (SEA/CONTINENTAL WATER)2. LAND

RESOURCES BACKGROUND1. WATER (SEA/CONTINENTAL WATER): FISHING

PRODUCTIONDifferent scenarios for fish production depending on the sources of

nutrition for phytoplankton growth:

A. SeaBoth Morocco and Cape Verde have lot of fish, WHY AND WHERE DOES THIS FISH COME FROM? WHAT ARE THE DIFFERENCES IN THE ORIGIN OF NUTRIENTS BETWEEN BOTH PLACES?

Upwelling (deep nutrient rich waters):

B. Continental waters– Rivers/run-off (from land): Surinam– Estuarine circulation (tidal circulation feeds surface water with

deep water): Paramaribo

Wind driven orthreshold upwelling(Coriolis force)Divergence upwelling

RESOURCES BACKGROUND2. LAND/SOILD: FARMING, AGRICULTURE

Different vegetation in similar latitudes, why?Different landscapes: the kind of soil and the climatic conditions may explain these differences. what is the soil made of?Is there any agriculture? Any farming? Which kind?

HOW CAN WE ANSWER THESE QUESTIONS?

1. SEA/CONTINENTAL WATER: FISHING PRODUCTION • Sampling macrofauna: FISH MARKETS

Are there a lot of species or only a few dominant? Which species? Economy impact of having one more abundant speciesWhat species are more bought?

Ask to the fishermen, they can tell you a lot about all this.

• Sampling the sea water: PHYTOPLANCTON NET: look at the differences of phytoplankton concentration in different places (coastal waters to oceanic waters)

2. LAND/SOILD: FARMING, AGRICULTURE• Smell the soil• Take pictures• Observe: kind of vegetation (modified or natural?), how does the people

live, which means do they use in the agriculture• Asking the guides and the people

HOW ARE WE GOING TO WORK?

• LAND BASED RESEARCH: at port

• FIELD BASED RESEARCH: at sea

LAND BASED RESEARCH: portsof visit

– RESEARCH: In each port, all students will investigate about the nature in the area, following the instructions given in the NATUR protokoll and trying to answer the questions (observing, asking to the people, looking, smelling, listening..)

– RESULTS PRESENTATION: After each port, 3 students from each watch will prepare a power point (15-20 slides) showing their own findings and trying to answer the questions related to the port. IN ENGLISH, BETTER WITH PICTURES!

– DISCUSSION AND CONCLUSIONS: One lesson onboard after each port of visit, with the presentation mentioned above and discussion between all. Conclusions. INPUTS FROM OTHER STUDENTS ARE EXPECTED!

PLANKTON AND WATER SAMPLING

Every week, 2 students will be responsible for:Fishing with the plankton net once a week (day to be decided by the officer on watch depending on the weather and sea conditions). Maybe we sample waterTaking the data related to the sampling (date, time, ship’s speed, start and end position, duration of the sampling, depth calculation, water temperature, weather conditions, etc.)Take a picture of the sampleLook at the sample in the microscope and describe it or conserve the sample for observing lateron

Calculating the real depth of sampling

Y'

X'

Z

Z'

Y

X

α

sin α=Z'/Y'; α=arcsin(Z'/Y')

Z=Y*sin α