Archbold Biological Station
Biennial Report 1995-1996

P.O. Box 2057 Lake Placid, Florida 33862 USA
Phone: 863-465-2571 FAX: 863-699-1927

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Accomplishments 1995-96


Archbold Biological Station
• Property boundaries, features, topography
• Vegetation communities
• Prescribed fires/wildlfires 1970-1996
• Florida scrub-jay territories and nests 1969-1996
• Florida scrub-jay insect/acorn sampling and foraging point data 1988-1996

Buck Island Ranch
• Property boundaries, features, topography
• Vegetation, infra-red images

Avon Park Air Force Range
• Property boundaries, features, topography
• Vegetation communities
• Territories and nests for Florida scrub-jays and red-cockaded woodpeckers

Lake Placid Scrub Preserve
• Property boundaries, features, topography
• Soils (acquired)
• Vegetation communities
• Prescribed fires/wildfires 1996

Lake Wales Ridge
• Soils (acquired)
• Boundaries of scrub tracts and preserves (acquired)
• Populations of rare and endangered plants

Geographic Information Systems

Project Director: Roberta L. Pickert
GIS Technicians: Leslie K. Backus, Scott Bergen, Christina Casada, Keith A. Tarvin

The years 1995-96 have seen many organizational, technical, and data acquisition advances in the Station’s Geographic Information Systems laboratory. Establishment of Roberta Pickert as GIS manager/systems administrator in May 1995 allowed the Station to cope with rapidly changing computer technologies and ever-increasing sophistication of long-term ecological spatial analysis.

The Spatial Data Library. The creation of a centralized digital spatial library was a major change in accessibility of baseline data. All of Archbold's current spatial data sets (n=18) are included (see Accomplishments 1995-96) , and new spatial information is continuously being added to the GIS library.

Spatially-related Projects in Research, Land Management, Administration, and Education. The core of GIS-trained research assistants has increased dramatically. Over the past 18 months (and into 1997) we have trained one or more persons from each research lab to be responsible for that lab’s spatial analysis. The advent of; easy-to-use advanced desktop mapping software, networking of our GIS-lab computers, and the strong group of GIS-trained scientists have enabled many spatially-related projects (listed below) to proceed simultaneously within the research programs, land-management activities, and administrative responsibilities.

A. Archbold Biological Station
1. Bird Lab

  • evaluate foraging habitat choices made by scrub-jays.
  • evaluate relationship between habitat characteristics within territories and the nutritional condition of fledgling scrub-jays.
  • model areas of scrub-jay productivity.
  • investigate the influence of habitat features on demographic parameters of blue jays.

2. Applied Avian Ecology  Lab

  • create a habitat quality map to determine the relationships between habitat, residential development, and Florida scrub-jay demography.

3. Plant Ecology Lab

  • describe and analyze genetic variation in seven federally-endangered plant species of Florida scrub. Spatial analysis was begun of populations sampled for isozymes to provide indices of connectedness, calculate effective population sizes from data on population dynamics and fecundity, and to link spatial data to the other variables of this study.

B. MacArthur Agro-ecology Research Center

  • develop physical and cadastral base maps for the Ranch.
  • automate radio-telemetry locations for red-shouldered hawks/barred owls for habitat-use study.
  • understand habitat use by crested caracaras nesting on the Ranch and surrounding properties.

C. Avon Park Air Force Range

  • create initial mapping of territories, cavity trees, and foraging areas of the red-cockaded woodpecker.
  • calculate total areas and habitat associations for red-cockaded woodpecker home ranges.

D. Land Management

  • develop fire-return intervals for the Station's Fire Management Plan

E. Station Administration and Education

  • create a Station properties and recent acquisitions coverage.
  • provide maps for The Nature Conservancy's Lake Placid Scrub Preserve brochure.
  • complete vegetation map for the Station leaflet.
  • provide maps as required on a project by project basis.

The figure below shows how integration of data sources produced by individual labs (Bird, Plant Ecology, and Land Management) assists in visualizing and answering multi-leveled research questions.



Lohrer, F.E. (Editor). 1998. Archbold Biological Station, Biennial Report 1995-1996. Archbold Biological Station, Lake Placid. 62 pp.
Archbold Biological Station, 1998 October.
Webmaster: Fred Lohrer.