Brief description
This dataset is part of an overall study of the impacts of industrial waste on Cockburn Sound. This dataset describes the impact of waste on seagrass growth. The length and width of seagrass fronds from 1 ft2 quadrats from 15 plot sampling transects (see thumbnail) were measured in Cockburn Sound. The regrowth of seagrasses were measured from 1 m2 from the same transects.Lineage
Maintenance and Update Frequency: notPlanned
Statement: Plot sampling transects were set up at 15 locations around the Cockburn Sound (see thumbnail).
A metal picket was driven into the bottom to mark the beginning of the transect. The second picket was placed a distance of 140 feet perpendicular to the beach line. Plots were then cut along the transect line with the number of plots determined by variability of the seagrass and slope of the meadow.
Under these circumstances transects were made from shoreward margin of the meadow to the area where depth became constant. Two quadrats, 1 foot square in size were placed at diagonally opposite corners of a one metre square quadrat. The seagrass within each quadrat was carefully clipped approximately 1 cm above leaf base and place in plastic bags for late measurement.
The rest of the seagrass in the metre square quadrat was then clipped so that average regrowth per day could be estimated approximately one month later.
**Please note - the data in the sheet (2_12_70 -30_1_71 part 2) does not follow the same methodology as the other data. It is plotless (random) sampling from Southern Flats.
Data parameters: length (cm), width (mm).
Notes
CreditEnvironmental Resources of Australia
Credit
Fremantle Port Authority
Fremantle Port Authority
Purpose
To establish a monitoring system of the impacts of industrial waste discharge into the Cockburn Sound ecosystem.
To establish a monitoring system of the impacts of industrial waste discharge into the Cockburn Sound ecosystem.
Issued: 04 07 2007
Data time period: 1970-12 to 1973-10
text: westlimit=115.6; southlimit=-32.4; eastlimit=115.75; northlimit=-32.05
text: uplimit=12; downlimit=1
Subjects
63 617002 |
Biomass |
BIOSPHERE |
Biosphere | Vegetation | Macrophyte |
EARTH SCIENCE |
ECOLOGICAL DYNAMICS |
ECOSYSTEM FUNCTIONS |
Oceans | Marine Biology | Marine Plants |
Primary Production |
Posidonia australis |
VEGETATION |
length |
oceans |
width |
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Other Information
Diagram showing method of sampling (Methodology - ecology of cockburn sound.jpg)
Length and width of seagrass data - Cockburn Sound (1970 - 73) (Length and Width of Seagrass - Cambridge.xls)
global : 27a615e0-29f3-11dc-b961-00188b4c0af8
Identifiers
- global : 97363bc0-2a01-11dc-b961-00188b4c0af8
