How to Make a Good Insect Specimen label …

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How to Make a Good Insect Specimen label . and why. Digital Specimen Data. Wave of the future Specimen labels = data sink (relatively primitive to get that data, borrow specimens, visit collections, etc.) - PowerPoint PPT Presentation


<ul><li><p>How to Make a Good Insect Specimen label and why</p></li><li><p>Digital Specimen Data Wave of the futureSpecimen labels = data sink (relatively primitive to get that data, borrow specimens, visit collections, etc.)Specimen labels transformed to digital format = data that can be used by the global community for many uses, some we have yet to envision</p></li><li><p>3 main conceptsProjectionDatumCoordinate systemGeographical Concepts</p></li><li><p>What projections doTissots Indicatrix of distortion Rectangular projection </p></li><li><p>Geographical Concepts: Datum</p></li><li><p>Common DatumsNAD27 (North American Datum): system derived from land-based surveys, using Clarke 1886 ellipsoid</p><p>NAD83: satellite-based system using the Earths center as a reference point; eventually adopted as GRS80 (Geodetic Ref. System 1980)</p><p>WGS84 (World Geodetic System 1984): mathematically refined GRS80 used by the US military and default for GPS</p><p>For most uses, NAD83, GRS80, WGS84 are equivalentGeographical Concepts: Datums</p></li><li><p>Coordinate SystemsDegrees, minutes, seconds392506N, 922618WDegrees, decimal minutes3925.1016N, 9226.2942WDecimal degrees *** use this!!39.41837, -92.43824 N = +, S = -, E = +, W = -</p></li><li><p>What is an acceptable georeference?Point: A numerical description of a place that can be mapped,and Extent: that describes the spatial extent of a locality (or collecting event),and Uncertainty: its associated uncertainties.What is a Georeference? Placing a spot on a map</p></li><li><p>Insect Label: low vs. high quality1 mi. E MoberlyRandolph Co., Mo.July 4-5, 1972Coll. E. G. RileyUSA: MO: Randolph Co.1 mi. E Moberly, Hwy. 2439.44929N, 92.40219W(WGS84), +/- 200mVII-4-5-1972, E. G. RileyUV light, secondary growth oak-hickory forestOld style w/o georeference</p><p>single labelModern style includes georeference</p><p>Often need a double decker (= two labels/spec.)</p><p>Two labels vs. single label:Pro: keeps footprint of label small (4 or 5 lines)Con: twice the work cutting and placing</p></li><li><p>Common Georeferencing Practices:or, what will happen to locality data from your old-style labels</p><p>Geolocate Used for locating points and giving uncertainties, editing those points and uncertainties, finding new points from known pointsGoogle Earth / Google Maps / GPS / paper maps, etc.Used for locating pointsGeoreference calculatorUsed for calculating uncertainties from known points via recommended best practices for particular locality types (named place, offset-heading, etc.)</p><p>Demonstrate with examples:</p><p>Point radius method </p></li><li><p>Out-Put from Geolocate Search</p></li><li><p>Geolocate results for Moberly, MO1 mi. E Moberly, MO* Note: Uncertainty resized to polygon</p></li><li><p>Output from Georef calculator forpoint at 1 mi. E of Moberly on Hwy. 24: Randolph Co., Missouri39.449941lat-92.406406lon7225(WGS84) World Geodetic System 1984datumdecimal degrees3.982374.489 mi. = maximum uncertainty radius (= of linear extent) ** Note that collecting event assumed to have taken place within a ca. 9-mile wide circle1 mi0.00001 degrees</p></li><li><p>Geolocate vs. Good Label1 mi. E Moberly, Hwy. 24, MOUSA: MO: Randolph Co.1 mi. E Moberly, Hwy. 2439.44929N, 92.40219W(WGS84), +/- 200m</p></li><li><p>Google Earth view</p></li><li><p>Suggested Protocol forPreparing Good LabelsTake GPS reading in field (especially if an obscure locality with poor landmarks)Run GPS coordinates in Google Earth / Google Maps to relocate point at middle of extent of the collecting event (CE).Calculate maximum uncertainty radius of CE (use ruler in Google Earth, etc.)Record coordinate source datum (GWS84)</p></li><li><p>Suggested Protocol forPreparing Good Labels, cont.Review how to use a GPS (set datum, record GPS model etc, + GPS error with each waypoint)Review how to take distance measurements using GoogleEarth and GoogleMapsCreate master copy of CE label (MS Word).Cut coordinates from typed labels and paste into Google Earth for verification: must double checkReview how to format labels (font size, line spacing, etc.) for printing in MS Word. Review need for quality paper &amp; printer</p></li><li><p>****testing slide 2</p></li></ul>