Geographic summary statistics for each estuary network.

<p>Standard distance is a measure of the spatial dispersion of the network, lower values are compact, higher values are spread out. The proportion area is the total area of the network divided by the total area of all estuaries in the study. Proportion sample is the number of estuaries in the network divided by the total number in the study.</p

Frequency of pollutants listed by section 303(d) of the Clean Water Act for catchments in networks 5, 8, and 9.

<p>The counts of sediment/siltation and temperature are likely due to incompatible forestry.</p

Dendrogram showing hierarchical division of estuary networks and agglomeration schedule.

<p>The hierarchical clustering identified nine substantive networks at a Euclidean distance of 2.5. Major divisions are by development (Network 2; d = 16), impaired inflows (Networks 1, 5, 8; d = 10), and approved shellfish growing areas (Networks 4; d = 7.5).</p

Mean values for threat variables for each network (development, shoreline development and armoring, port facilities, toxics release, agriculture, dams, shellfish aquaculture, clearcutting, 303(d) streams, precipitation reduction).

<p>High values for any threat indicates relatively more stress on the estuary.</p

Map of estuary networks in the study region.

<p>Networks were created using hierarchical cluster analysis of 11 variables that represent stresses to estuaries in the region.</p

Conceptual diagram showing estuary stresses mapped from land and sea sources combined using cluster analysis to create regional networks.

<p>These networks can ideally inform local conservation actions.</p