Scientific workrelated to water   , May 2012 Augusta
How we did the work We studied two rivers (Belelle and Mandeo) and two  intertidal zones (Ortigueira’s ria and Cobas beac...
Belelle and Mandeo river
Ortigueira’s ria:situation                             Ortigueira’s ria
Cobas beach:situation                        Cobas beach
RiversAspects observed:    Parts of the course    Flora and fauna    Chemical data    Anthropogenic     action       ...
Parts of the rivers’ course    The course of the rivers is divided in three parts:        High course  - The river has mor...
Parts of the rivers studied We only observed and collected data in the middle course and  the low course of the rivers. ...
The middle course of the river
The low course of the river• The low course is less dynamic and the quantity of disolved oxygen  is lower.• The low course...
Flora: the riparian forestThe riparian forest is one of the most outstanding features of the river bank.It follows the r...
Flora: the riparian forestSycamore plane                Hazelnut treeAcer pseudoplatanus           Corilus avellana
Flora: the riparian forestIn spring                    In autumn
Flora      Royal fernWild saffron           Osmunda Regalis
FAUNACalopterix virgo                                      Salamander           Gerris lacustris                          ...
Chemical dataWe measured temperature, pH, conductivity and dissolved oxygen in the middle course and the low course of th...
Chemical data                Part of the   Temperature pH    Conductivity   Dissolved                river                ...
Chemical data: low course
Chemical data: middle course
Anthropogenic actionIt’s noticeable all along the course ofthe riverIt has been present for a long timebecause water is ve...
ANTHROPOGENIC ACTION
POLLUTION   We found some sporadic            spots in the low course
UsesThe uses that we could observe were: householdconsumption, irrigation, farming usage, powergeneration, recreational us...
Public washing place                                                    Detour for consumptionHydroelectrical plant       ...
Intertidal zonesWe studied two zones: Ortigueira’s ria Cobas beach
Intertidal zoneZone of coast that is under water at high tide and above water at lowtide
Intertidal zone: substrate type
Intertidal zone: substrate type                           Soft: sandy-muddy
High tide line: supralittoral zoneThe high tide line features species like:                                               ...
High tide line                 Yellow Xantoria Zone                 Red Seaweed Zone                 Dun Seaweed Zone     ...
FLORA: seeweed                         Green seaweed           Dun seaweed                          Red seaweed
FLORAExamples of plants thataren’t seaweed               Limonium sp.   Salicornia sp.
Specific faunaLimpet                                Balanus sp.         Pollicipes cornucopia                Anemone      ...
Dolphin family -           Calderon                                 Intertidal zone:                                 occas...
In the lab: seawater studyA sample of seawater and seaweed was taken to the lab.                         The aim of the st...
Seaweed chlorophyll                      Extracting the pigments
Seaweed pigments          Filtering the extract
Seaweed pigmentsSeparating the green, red and brown pigments bypaper chromatography
Density of seawater      Finding out the density of seawater by weighting
Density of sea water. Results Mass     Volume Density  (g)      (cm3) (g/cm3) 25,51      25      1.020 25,49      25      ...
–   FishingUses   –   Recreation       –   Energy: waterwheel       –   Gathering seaweed for different uses
Changes and pollution                 Private property, law isn’t respected.                 No public walking path       ...
Upcoming SlideShare
Loading in …5
×

Scientific work related to water

1,302 views

Published on

Presentación en Sicilia (mayo 2012), dentro del proyecto Comenius: "Water, Spring of Life"

Published in: Education, Technology, Business
  • Be the first to comment

  • Be the first to like this

Scientific work related to water

  1. 1. Scientific workrelated to water , May 2012 Augusta
  2. 2. How we did the work We studied two rivers (Belelle and Mandeo) and two intertidal zones (Ortigueira’s ria and Cobas beach). Dates: November and March Students involved: 1st ESO (12-13 year-olds), 2nd ESO (12-13 year-olds), 3rd ESO (14-15 year-olds), 4th ESO (15-16 year-olds) and 1st Bach (16-17 year-olds) Subjects: Biology, Chemistry and Science for the Contemporary World We worked on the field, in the lab and in class. We organised some conferences about these subjects.
  3. 3. Belelle and Mandeo river
  4. 4. Ortigueira’s ria:situation Ortigueira’s ria
  5. 5. Cobas beach:situation Cobas beach
  6. 6. RiversAspects observed:  Parts of the course  Flora and fauna  Chemical data  Anthropogenic action  Pollution  Uses: energy, agriculture, recreation
  7. 7. Parts of the rivers’ course The course of the rivers is divided in three parts: High course - The river has more inclination and carries little water. - Due to the inclination the water is very oxygenated. Middle course - Higher flow; affluents; riparian forest. Low course - Forms part of the estuary.
  8. 8. Parts of the rivers studied We only observed and collected data in the middle course and the low course of the rivers. In the middle course the water is more dynamic and has more disolved oxygen, so it is cleaner. This is the part where the water for human supply (consumption) comes from.
  9. 9. The middle course of the river
  10. 10. The low course of the river• The low course is less dynamic and the quantity of disolved oxygen is lower.• The low course may be under the influence of tides.
  11. 11. Flora: the riparian forestThe riparian forest is one of the most outstanding features of the river bank.It follows the river course.It’s important for the conservation of the river course.Common trees: European alder, sycamore plane, hazelnut tree, bay laurel and oak.
  12. 12. Flora: the riparian forestSycamore plane Hazelnut treeAcer pseudoplatanus Corilus avellana
  13. 13. Flora: the riparian forestIn spring In autumn
  14. 14. Flora Royal fernWild saffron Osmunda Regalis
  15. 15. FAUNACalopterix virgo Salamander Gerris lacustris Erithacus rubecula Lutra lutra European robin European otter
  16. 16. Chemical dataWe measured temperature, pH, conductivity and dissolved oxygen in the middle course and the low course of the river.
  17. 17. Chemical data Part of the Temperature pH Conductivity Dissolved river oxygenBelelle river Middle 9.6 ºC 6.64 190 S/cm 8.5 ppm course Low course 10.1 ºC 7.15 251 s /cm 8.3 ppm Conclusions: The highest pH and conductivity are found in the low course due to the influence of tides.
  18. 18. Chemical data: low course
  19. 19. Chemical data: middle course
  20. 20. Anthropogenic actionIt’s noticeable all along the course ofthe riverIt has been present for a long timebecause water is very useful andnecessary, as some constructions wefound on the way bear witness to.Nowadays, there is still pressure dueto the same reasons Some constructions in the river bank
  21. 21. ANTHROPOGENIC ACTION
  22. 22. POLLUTION We found some sporadic spots in the low course
  23. 23. UsesThe uses that we could observe were: householdconsumption, irrigation, farming usage, powergeneration, recreational uses RecreationWaterwheel Irrigation
  24. 24. Public washing place Detour for consumptionHydroelectrical plant Recreational uses Uses
  25. 25. Intertidal zonesWe studied two zones: Ortigueira’s ria Cobas beach
  26. 26. Intertidal zoneZone of coast that is under water at high tide and above water at lowtide
  27. 27. Intertidal zone: substrate type
  28. 28. Intertidal zone: substrate type Soft: sandy-muddy
  29. 29. High tide line: supralittoral zoneThe high tide line features species like: Xantoria and Crythmun maritimunArmeria flowers Crythmun marking the high tide line
  30. 30. High tide line Yellow Xantoria Zone Red Seaweed Zone Dun Seaweed Zone Green Seaweed Zone
  31. 31. FLORA: seeweed Green seaweed Dun seaweed Red seaweed
  32. 32. FLORAExamples of plants thataren’t seaweed Limonium sp. Salicornia sp.
  33. 33. Specific faunaLimpet Balanus sp. Pollicipes cornucopia Anemone HoloturiaMonodonta sp. Litorina litoralis Clams / Cardium edule
  34. 34. Dolphin family - Calderon Intertidal zone: occasional fauna Purple sandpiper Larus argentatusCormoran Anas platyrhynchos
  35. 35. In the lab: seawater studyA sample of seawater and seaweed was taken to the lab. The aim of the study was:  To separate the seaweed’s pigments by paper chromatography.  To extract iodine from seaweed.  To measure the density of seawater.
  36. 36. Seaweed chlorophyll Extracting the pigments
  37. 37. Seaweed pigments Filtering the extract
  38. 38. Seaweed pigmentsSeparating the green, red and brown pigments bypaper chromatography
  39. 39. Density of seawater Finding out the density of seawater by weighting
  40. 40. Density of sea water. Results Mass Volume Density (g) (cm3) (g/cm3) 25,51 25 1.020 25,49 25 1.019 25,47 25 1.019 Density (g/cm3) 1.019The density of sea water in Cobas beach is 1019 kg/m3
  41. 41. – FishingUses – Recreation – Energy: waterwheel – Gathering seaweed for different uses
  42. 42. Changes and pollution Private property, law isn’t respected. No public walking path Rats: waste waters

×