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field_methods:key_species_method [2008/12/31 13:29]
kcolson
field_methods:key_species_method [2012/03/08 15:48] (current)
jgillan
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 +<​sup>​[[:​bug_reporting|Report a bug, broken link, or incorrect content]]</​sup>​[[http://​methods.landscapetoolbox.org|{{ field_methods:​methodsguide3.png?​220x120|}}]]
 ====== Key Species Method ====== ====== Key Species Method ======
-[[http://​www.rangelandmethods.org/​about/​get_involved|{{:​abstract_in_dev.gif|}}]]+[[http://​www.landscapetoolbox.org/​about/​get_involved|{{:​abstract_in_dev.gif|}}]]\\ 
 +written by Karen Colson and Jason Karl
  
 ===== Description and Uses ===== ===== Description and Uses =====
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 With the Key Species method there is no need to disturb the vegetation (i.e., harvesting). ​ It is also very rapid since the estimated percentage of forage removed is recorded in one of seven broad classes rather than as an exact percentage. ​ This is also a more accurate approach since different observers are more likely to estimate utilization in the same classes than to estimate the same utilization percentages. ​   With the Key Species method there is no need to disturb the vegetation (i.e., harvesting). ​ It is also very rapid since the estimated percentage of forage removed is recorded in one of seven broad classes rather than as an exact percentage. ​ This is also a more accurate approach since different observers are more likely to estimate utilization in the same classes than to estimate the same utilization percentages. ​  
  
-However, observer bias and subjectivity are a concern with this method making fairly rigorous training necessary. ​ Observers must first compare their ocular estimates against actual weight values obtained by clipping and weighing to train themselves. ​ Exclosures, cages, or fenced areas are also typically necessary for training purposes.  ​They should also be used to provide ungrazed plants to observe while conducting the monitoring. ​ Error can also be reduced by limiting observations to individual plants or small areas (quadrats).+However, observer bias and subjectivity are a concern with this method making fairly rigorous training necessary. ​ Observers must first compare their ocular estimates against actual weight values obtained by clipping and weighing to train themselves. ​ Exclosures, cages, or fenced areas are also typically necessary for training purposes.  ​Cages should also be used to provide ungrazed plants to observe while conducting the monitoring. ​ Error can also be reduced by limiting observations to individual plants or small areas (quadrats).
  
 ===== Manuals ===== ===== Manuals =====
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   *Utilization Studies and Residual Measurements (Technical Reference 1734-3) http://​www.blm.gov/​nstc/​library/​pdf/​utilstudies.pdf   *Utilization Studies and Residual Measurements (Technical Reference 1734-3) http://​www.blm.gov/​nstc/​library/​pdf/​utilstudies.pdf
   ​   ​
 +  *Swanson, S. et al. 2006. Nevada Rangeland Monitoring Handbook, Second Edition. Educational Bulletin 06-03.
 +http://​www.unce.unr.edu/​publications/​files/​ag/​2006/​eb0603.pdf
 +
 ===== Technical and Application References ===== ===== Technical and Application References =====
  
 ===== Similar Approaches ===== ===== Similar Approaches =====
  
 +
 +Related utilization and residue measurement methods include:
 +  * [[Cole Browse Method]]
 +  * [[Extensive Browse Method]]
 +  * [[:​field_methods:​twig_length_measurement]]
 +  * [[Stubble Height]]
 +  * [[Paired Plot Method]]
 +  * [[comparative_yield_method]]
 +  * [[Utilization - Grazed Class Method]]
 +  * [[Herbaceous Removal-Height-Weight Method]]
 +  * [[Herbaceous Removal-Actual Weight Method]]
 +  * [[Herbaceous Removal-Ocular Method]]
 +  * [[:​field_methods:​landscape_appearance_method]]
 +  * [[:​field_methods:​pasture_condition_scoring]]
 +  * [[:​field_methods:​stubble_height]]
 +  * [[:​field_methods:​utilization_-_grazed_class_method]]
 +  * [[:​field_methods:​use_pattern_mapping]]
  
 ===== Additional Information ===== ===== Additional Information =====
  
  
 +===== Web Search Results =====
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 +
 +===== 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/key_species_method.1230755382.txt.gz · Last modified: 2012/02/22 13:28 (external edit)