We
have held Coastal Cleanup in the community since 2000, as part of an
international effort organized by The Ocean Conservancy. Each fall
schools, groups and citizens come together to clean up our beaches. Beach by
beach we gather information on how much trash was found, and what kinds of
trash we collected.
Las Conchas and Estero Morúa Beach Cleanup 2009
In the fall of 2009, members of the Las Conchas Peninsula
community, kids from Club Ecologico, and students in the Marine Awareness and
Conservation Society (MACS) at the University
of Arizona joined CEDO in
a clean-up of the Las Conchas Beach Front and areas of Estero Morua.
Approximately seven miles of beach front were covered in three hours by
volunteers.
In the end, a total of 23 bags of trash were collected.
Specific trash items have been divided by the Ocean Conservancy into different
categories, related to causal activity. Figure 1 below shows the causal
activity analysis totals for all trash collected.
As can be seen, the majority of trash results from
recreational activities, but a solid third results from ocean activities. These
results reflect the main industries of Puerto Peñasco: tourism and fishing.
Las Conchas:
In Las Conchas, 18 bags were collected in total. The tables below show the types of trash found as a representative sample. This reflects
the trash from three of the 18 bags collected in the area.
Table 1: Shoreline and Recreational Activities
Item
# of Items Found
% of Trash Collected
Bags
47
7.26
Balloons
2
0.31
Dishes (plates, cups, etc.)
12
1.85
Plastic Beverage Bottles (2L or less)
90
13.91
Glass Beverge Bottles
19
2.94
Beverage Cans
11
1.70
Caps, Lids
110
17.00
Clothing/Shoes
14
2.16
Food Wrappers/Containers
31
4.79
Straws/Stirrers
43
6.65
Little pieces of plastic
15
2.32
Ribbon
3
0.46
Glass
11
1.70
Cardboard
4
0.62
Paper
10
1.55
Cloth
2
0.31
Toys
7
1.08
Total Shoreline & Recreation
431
66.32
Table 2: Ocean/Waterway Activities
Item
# of Items Found
% of Trash Collected
Fishing Nets
2
0.31
Fishing Line
3
0.46
Crates
2
0.31
Pallets
31
4.79
Plastic Sheeting/Tarps
8
1.24
Styrofoam
16
2.47
Rope
91
14.06
Total Ocean/Waterway
153
23.65
Table 3: Medical/Personal Hygiene
Item
# of Items Found
% of Trash Collected
Syringes
1
0.15
Condoms
1
0.15
Total Medical/Personal Hygiene
2
0.31
Table 4: Dumping Activities and Final Total
Item
# of Items Found
% of Trash Collected
Car Parts
2
0.31
Tire
2
0.31
Wood
31
4.79
Total Dumping
35
5.41
Final Total
647
100
Most common items found were pieces of rope (14.06%), caps
and lids (17.00%), plastic beverage bottles (13.91%), and bags (7.26%).
Figure 2 belows show the categories of trash collected in Las Conchas.
These items reflect the common use of this beach front: recreation. Pieces of rope/fishing line indicate the destruction of these
fishing use items offshore, and that they are being washed ashore here.
Estero Morua:
On the stretch of beach near the restaurant El Barco, 12
people collected five bags of trash over a distance of approximately one mile. The most common items collected here were pieces of
Styrofoam (20.57%), pieces of plastic (10.94%), glass bottles (23.44%), and
caps and lids (6.25%).
Figure 3 below shows the categories of trash collected near
El Barco.
The high amount of Styrofoam found likely results from the
oyster farms located in Estero Morua, which use pieces of Styrofoam to keep
the oyster boxes afloat. The high percentage of pieces found indicates that an
alternate floatation device should be investigated. The other common items are
from recreational use, as El Barco is a common place for Puerto Peñasco residents and
tourists to visit.
This (relatively) small amount of trash reflects positively
on the Las Conchas community, showing their commitment to keeping a beautiful
and clean beach. While speaking with participants, it became evident that as
they walk the beach, neighbors are regularly picking up trash that they find,
helping to maintain this beach clean.
TIDE BITS: Swimming File Clam
Unlike other
clams, which attach to the seafloor with byssal threads, the swimming file clam
moves around the tidepools by pumping the two halves of its shell. Its orange
tentacles enable it to filter food particles from the water. These delicate
clams are small, not growing longer than 3-4 centimeters. If you tidepool at
dusk, moving algae out the way, you’re likely to see this gem of the rocky
reef.