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field_methods:ocular_cover_estimate_plot-based [2009/01/06 12:18]
admin created
field_methods:ocular_cover_estimate_plot-based [2012/03/08 15:27] (current)
jgillan
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 +[[http://​methods.landscapetoolbox.org|{{ field_methods:​methodsguide3.png?​220x120|}}]]
 ====== Visual or Ocular Cover Estimates in Plots ====== ​     ​ ====== Visual or Ocular Cover Estimates in Plots ====== ​     ​
- ​[[http://​www.rangelandmethods.org/​about/​get_involved|{{:​abstract_in_dev.gif|}}]]+ ​[[http://​www.landscapetoolbox.org/​about/​get_involved|{{:​abstract_in_dev.gif|}}]]
                                                                                
  
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 ===== Manuals ===== ===== Manuals =====
  
-  *Measuring and Monitoring Plant Populations (Elzinga et al. 2001)http://​www.blm.gov/​nstc/​library/​pdf/​MeasAndMon.pdf.  ​+  *Measuring and Monitoring Plant Populations (Elzinga et al. 2001) [[http://​www.blm.gov/​nstc/​library/​pdf/​MeasAndMon.pdf]].  ​ 
 + 
 +  *Sampling Vegetation Attributes 1734-4. [[http://​www.blm.gov/​nstc/​library/​pdf/​samplveg.pdf]].
  
-  *Sampling Vegetation Attributes 1734-4. http://​www.blm.gov/​nstc/​library/​pdf/​samplveg.pdf. 
  
 ===== Technical and Application References ===== ===== Technical and Application References =====
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 There are three main techniques for measuring cover: Ocular or Visual Estimates, Line-Point Intercept, or Line Intercept. ​ There are three main techniques for measuring cover: Ocular or Visual Estimates, Line-Point Intercept, or Line Intercept. ​
  
-[[Line-Point Intercept]] is considered to be the least biased of all three. It is a rapid and accurate method for quantifying soil cover, which in addition to vegetation, includes cover by litter, rocks and biological soil crusts. Another similar method to line-point intercept is [[Step Point]], which is more rapid because no tape is required, but also more subjective.  ​+[[:​field_methods:​line_point_intercept|Line-Point Intercept]] is considered to be the least biased of all three. It is a rapid and accurate method for quantifying soil cover, which in addition to vegetation, includes cover by litter, rocks and biological soil crusts. Another similar method to line-point intercept is the [[:​field_methods:​step-point_transect_method|step-point method]], which is more rapid because no tape is required, but also more subjective.  ​
  
 Line Intercept is separated into two main methods: [[Canopy Gap Intercept]],​ which measures the proportion of a line covered by large gaps between plant canopies and is an important indicator of the potential for wind erosion and weed invasion and [[Basal Gap Intercept]],​ which measures the proportion of the line covered by large gaps between plant bases and is important as an indicator of runoff and water erosion. ​   Line Intercept is separated into two main methods: [[Canopy Gap Intercept]],​ which measures the proportion of a line covered by large gaps between plant canopies and is an important indicator of the potential for wind erosion and weed invasion and [[Basal Gap Intercept]],​ which measures the proportion of the line covered by large gaps between plant bases and is important as an indicator of runoff and water erosion. ​  
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 ===== Additional Information ===== ===== Additional Information =====
  
 +===== Web Search Results =====
 +<​html>​
 +<script src="​http://​www.google.com/​jsapi"></​script>​
 +
 +    <script language="​Javascript"​ type="​text/​javascript">//<​![CDATA[
 +      google.load('​search',​ '​1.0'​);​
 +      ​
 +      function OnLoad() {
 +
 +        var searchString = '"​rangeland occular estimate plot"';​
 +        // create a tabbed mode search control
 +        var searchControl = new google.search.SearchControl();​
 +        options = new google.search.SearcherOptions();​
 +        options.setExpandMode(google.search.SearchControl.EXPAND_MODE_OPEN);​
 +        options.setRoot(document.getElementById("​web_results"​));​
 +        searchControl.addSearcher(new google.search.WebSearch(),​ options);
 +
 +        var drawOptions = new google.search.DrawOptions();​
 +
 +        options2 = new google.search.SearcherOptions();​
 +        options2.setExpandMode(google.search.SearchControl.EXPAND_MODE_OPEN);​
 +        searchControl.addSearcher(new google.search.BookSearch(),​ options2);
 +        searchControl.draw(document.getElementById("​book_results"​),​ drawOptions);​
 +
 +        // execute searches
 +        searchControl.execute(searchString);​
 +
 +      }
 +      google.setOnLoadCallback(OnLoad,​ true);
 +    //]]>
 +    </​script>​
 +
 +    <table border="​0">​
 +       <​tr><​td width="​50%">​ <div class="​search-control"​ id="​book_results">​Loading...</​div>​
 +           </​td>​
 +           <​td width="​50%">​ <div class="​search-control"​ id="​web_results">​Loading...</​div>​
 +           </​td>​
 +       </​tr>​
 +    </​table>​
 +</​html>​
  
 +===== Discussion/​Comments =====
 +<​sub>​**You must have an account and be logged in to post or reply to the discussion topics below. [[http://​abstracts.rangelandmethods.org/​doku.php/​Home?​do=login&​sectok=db3676cff5bcd873b609b4e582432d73|Click here]] to login or register for the site.**</​sub>​
 +~~DISCUSSION| ~~
  
  
  
  
field_methods/ocular_cover_estimate_plot-based.1231269508.txt.gz · Last modified: 2012/02/22 13:28 (external edit)