Filters: Contacts: Douglas A Olsen (X)
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The Aquatic Habitat Analysis and Visualization Tool is a program and interface that allows users to view and create habitat models using the pre-improvement water quality data collected for the Finger Lakes Habitat Rehabilitation Project (HREP). The Finger Lakes HREP is a hydrologic modification of a backwater lake complex in upper Pool 5 of the Mississippi River. The program and interface were implemented using Arc Macro Language and require the workstation version of ARC/INFO geographic information system software (ESRI, Redlands, CA).
This chapter describes the procedures for digital data entry to be used by the staff at the Environmental Management Technical Center. Included are procedures for creating a coverage, registering a base map, digitizing with an automated program (Production ARCEDIT), generating topology for a coverage, and attributing. The two main issues during this procedure are digitizing error and quality control. The Appendixes contain forms and other information needed for the digital data entry procedure.
Using the personal computer-based geographic information systems software ArcView, a graphical application has been developed to spatially query the Long Term Resource Monitoring Program (LTRMP) component database and to display the selected data in conjunction with other spatial data for viewing, plotting, and analysis. One of the important features of the LTRMP Decision Support System - Component Database Module is the ability to define an area spatially, then extract the LTRMP trend data for that area. Selected information can be summarized within ArcView, or exported in a format compatible with statistical analysis programs.
The Environmental Management Technical Center stores point-sampled data for fisheries, water quality, and invertebrates in a relational database management system. These component data are collected at fixed and random sites in each of the key Long Term Resource Monitoring Program (LTRMP) study Pools: 4, 8, 13, 26, and the open river reach on the Mississippi River; and the La Grange Pool on the Illinois River. While the geographic locations of these data are also collected and stored, the tools to automate the integration of these data with spatial data had not previously been developed. A need existed for an application that would facilitate spatial subsetting and visualization of the distribution of sites meeting...
Conclusions: Frogs and toad species were more abundant and diverse where habitat patch diversity was high or where there were forested wetland edges. Relative abundances of amphibian populations correlated positively with metrics such as the length of edge between forest and wetland, and negatively with the presence of agricultural and urban land. Thresholds/Learnings: Synopsis: This study examined landscape-level relationships for frogs and toads by measuring associations between relative abundance and species richness based on survey data derived from anuran calls and features of land cover maps for Iowa and Wisconsin. Relative abundances correlated positively with metrics such as the length of edge between forest...
Categories: Publication;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Water Quality,
Wetlands,
relative abundance,
species richness
The EMTC Map Composer is a graphical user interface for the ARC/INFO module ARCPLOT. The Map Composer allows users to perform many data display and query functions, as well as to create standard ARC/INFO map compositions, graphics files, and Calcomp plotter files. The intent of the program is to present users with a small subset of core ARCPLOT commands in a user-friendly graphical environment, making ARCPLOT less intimidating for the new user and more convenient and faster for the experienced user.
This geospatial application is targeted at beginning ARC/INFO users. Production ARCEDIT (PAE) is a menu-driven subset of the ARC/INFO module ARCEDIT. It is specifically designed for basic production work: digitizing, editing, and attributing. Many of the details of ARCEDIT are hidden from the PAE user and many of the more complex features are not included. The learning curve for production work is shortened by providing the new user with a friendly and consistent graphical user interface and a small subset of the core ARCEDIT commands.
The floodplain of the Upper Mississippi River has been significantly modified by man since 1824. Changes include the removal snags and sandbars, elimination of rapids, closing of side channels, construction of wing dams, 29 navigation locks and dams, and hundreds of miles of levees. Watershed changes have transformed much of the landscape from forest/grassland habitats to agriculture. We studied floodplain changes by analyzing historical water elevation and discharge data collected since 1861 and spatial data since 1891. Open water and marsh habitats have generally increased in the dammed portion of the river. A 28% reduction in open water and a 38% reduction in woody and terrestrial habitats have occurred In areas...
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