This document presents the results of a quantitative analysis of Patenga Sea Beach in Bangladesh. It describes the study methodology and findings regarding biodiversity, pollution, and beach profile. Four stations along the beach were examined, and data was collected on organisms present, including crabs, barnacles, snails, algae, and shells. High levels of biodiversity were found, with over 9 million crab holes and 3.2 billion barnacles estimated in one square kilometer. The beach profile contained soft sand and silt with mineral deposition. Some areas showed pollution from biodegradable and non-biodegradable waste, threatening the coastal environment.
12. Biodiversity in One Square kilometer
• Crab Holes= 9490000
• Snails= 16420000
• Barnacles=32660000
• Shells of dead Organisms=70000
• Turitella =10000
• Algae=11.75% of 1 square kilometer area
14. Barnacles
• Barnacles are crustaceans
• Barnacles are exclusively marine, and
tend to live in shallow and tidal
waters, typically in erosive settings.
• They are sessile (nonmotile)
suspension feeders.
16. Turitella
• Turritella is a genus of medium-sized
sea snails with an operculum.
• They have tightly coiled shells, whose
overall shape is basically that of an
elongated cone.
18. Crab holes
• Crab holes are indicator of presence of
live crabs.
• Basically crab holes are found in littoral
zone, as crabs habitat in littoral zone.
20. Red algae
• The red are organisms having eukaryotic
cells without flagella and centrioles,
chloroplasts that lack external
endoplasmic reticulum and contain
unstacked (stoma) thylakoids.
• Red algae use phycobiliproteins as
accessory pigments, which give them
their red color.
22. Green algae
Green algae have chloroplasts that contain
chlorophyll a and b, giving them a bright
green color, as well as the accessory
pigments beta carotene and xanthophylls, in
stacked thylakoids.
The cell walls of green algae usually contain
cellulose, and they store carbohydrate in the
form of starch.
23. Snails
the common name snail is also used for
most of the members of the molluscan
class Gastropoda that have a coiled shell.
25. Polychaetes burrows
• Polychaetes are segmented worms which
are among the most common marine
organisms, and can be found living in the
depths of the ocean, floating free near
the surface, or burrowing in the mud and
sand of the beach.
• By secreting sticky things they build their
habitat strong, sometimes like reef.
27. Profile of Patenga Sea
Beach
Soft sand and silt cobination
Heavy mineral deposition on
high land
Heavy minearals depositon
around boulders
Bio diversity are found tide dipped
boulders
Anthropogenic boulders
28. Mineral Deposition along
coast
Heavy mineral deposition
Light mineral deposition
Mini Sand bar
Vertical profile of
beach sediments
Sorting of grain size by size
and density
Lamination found through
depositon patterns
35. We got two types of pollutants in our studied
area-
1. Biodegradable
2. Non-biodegradable
36. This stalls are selling a lot of product
daily. Which are earing us a huge
amount of revenue.
Unplanned tourism
But unplanned tourism costing the
beauty of our cost.
Yuck!!!!
37. Plastic are easy to use and
cheap in cost. But it is very
harmful for the environment.
Pollution effect
Pollution not only costing our coastal
beauty but also hampering the beautiful
biodiversity of our coast.
You cannot
collect me cause
I’m micro plastic.
