Worksite Management Manual

The document outlines the application of mapping and navigation tools for invasive alien plant (IAP) management. It explains the use of different map scales, specifically recommending 1:10,000 for identifying Natural Biological Alien units (Nbals), and describes the utility of topographical and aerial maps for assessing terrain and accessibility. Additionally, it provides instructions on using magnetic compasses to determine bearings and GPS devices to record coordinates of landmarks for later retrieval.

• Map skills are critical for the clearing of invasive alien plants to assist in pre-planning and execution, including the division of areas into Natural Biological Alien units (Nbals), which are homogenous areas defined by species, age class, or density.
• Different map scales serve different management purposes: a 1:10,000 scale is considered ideal for IAP management and recognizing Nbals, while a 1:50,000 scale is useful for managing regions with numerous projects.
• Topographical maps use contour lines to indicate height above sea level and land gradient, allowing contractors to estimate accessibility, ease of clearing, and appropriate clearing methods based on whether the terrain is flat or steep.
• Magnetic compasses are used for orienting within contract areas, cutting transects in dense vegetation, settling boundary disputes, and orienting escape routes in fire hazard areas, noting a typical variation of around 24 degrees west of true north.
• Hand-held GPS devices, which require connection to at least three satellites, can store coordinates for landmarks such as stumps or felled trees and are generally accurate down to 5 square meters.

APA

Deacon, G., & Harding, G. (2007). Worksite Management Manual. WWF South Africa. http://wwfafrica.awsassets.panda.org/downloads/appendix_6_basic_mapping_skills.pdf

Chicago

Deacon, G., and G. Harding. Worksite Management Manual. WWF South Africa, 2007. http://wwfafrica.awsassets.panda.org/downloads/appendix_6_basic_mapping_skills.pdf.

Wikipedia

{{cite report |last1=Deacon |first1=G. |last2=Harding |first2=G. |title=Worksite Management Manual |publisher=WWF South Africa |date=2007 |url=http://wwfafrica.awsassets.panda.org/downloads/appendix_6_basic_mapping_skills.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{deacon2007worksite, author = {Deacon, G. and Harding, G.}, title = {{Worksite Management Manual}}, institution = {WWF South Africa}, year = {2007}, url = {http://wwfafrica.awsassets.panda.org/downloads/appendix_6_basic_mapping_skills.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }