出版社：Government of Western Australia / Department of Fisheries
摘要：This pilot study investigated potential resource condition indicators, remote sensing, and
ground truthing methodologies, for their use in long term monitoring of mangroves and inter-
tidal mudflats in the Pilbara and Kimberley.
This study found that from the many potential resource condition indicators that are available,
few are truly indicative of the resource condition, and even fewer are practical to implement.
Of the potential resource condition indicators trialled here, approximately half of them were
found to be useable.
Biological measurements that can be used as resource condition indicators tend to be complex,
due to the complex nature of the environments examined here, and simplistic measures
were found to be misleading of the true resource condition, in most instances. Remote
sensing was shown to be a successful tool for estimating canopy density and habitat extent.
However, this study also showed that it is essential to define appropriate spatial scales and
select the appropriate remote sensing imagery resolution in order to use remote sensing
successfully. Also apparent from this study, is the need to collect on ground measurements
from the target area to be monitored, to correctly calibrate the remote sensing imagery. Site
sampling replication needs to be relatively high in order to capture the high variability of the
mangrove habitat.
Logistical issues of sampling in mangrove habitats are discussed, as are the issues of being
familiar with field data collection techniques, prior to collecting important data. Advanced
planning is needed for coordinating field data collection with imagery capture, as well as
consideration for tides, season, and other environmental factors, particular to a given habitat
or environment.
Overall, remote sensing can be used as an appropriate tool for long term resource condition
monitoring, given that such data is appropriately calibrated with on ground measurements with
sufficient replication to capture the heterogeneity of a particular habitat, or in this instance,
mangroves and intertidal mudflats.
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