Population Dynamics

Information associated with the population dynamics of organisms

Census data on salt marsh birds using 100 m radius counting circles for the Parker River National Wildlife Refuge, Massachusetts.

Abstract: 

This file contains census data on salt marsh birds using 100 m radius counting circles for the Parker River National Wildlife Refuge, Massachusetts from 2001-2009 using 100 m radius counting circles.

Core Areas: 

Data set ID: 

58

Keywords: 

Short name: 

MON-EX-PRNWR-Salt-Marsh-Birds

Data sources: 

MON-EX-PRNWR-Salt-Marsh-Birds.csv
MON-EX-PRNWR-Salt-Marsh-Birds.xls

Methods: 

Standard breeding bird censuses with 100 m radius counting circles.  Observing periods divided into 0-3 min, 3-5 min, and 5-10 minutes for comparison with other censuses.  For 3-5 min period, only additional birds not recorded in the 0-3 period are recorded.  For 5-10 min period, only additional birds not recorded in the 0-5 min period are recorded.  Birds recorded either visually or by sound.  Counting circle boundaries set a minimum of 200 m from each other.  Observer distinguished between birds within 50 m of the center point, birds from 50-100 m, and those beyond 100 m.  Counts carried out from late May through August over a three-year period.  Placement of circles within vegetated salt marsh habitat.

NOTES AND COMMENTS:
Temperature inconsistently recorded
Variable description clarification-
Beaufort scale: whole numbers from 1-12 with increasing wind based on observations of trees, waves, etc. (http://en.wikipedia.org/wiki/Beaufort_scale)

AlphaCode- Four-letter codes, based on English names, broadly following the rules and strategies adopted by the U.S. Bird Banding Laboratory (BBL), http://www.birdpop.org/AlphaCodes.htm.

Maintenance: 

Data managed by USGS Patuxent Wildlife Research Center (PWRC) staff as part of a large database on National Wildlife Refuges across the country.

This replaces an earlier dataset that covered 1999-2001 (MON-EX-PRNWR-Salt-Marsh-Birds.01, knb-lter-pie.58.3) . PWRC considers this current dataset to be a more reliable estimation of bird numbers at the Parker River National Wildlife Refuge than the previous dataset.

Version 02 created 22Feb2011.
Version 03: January 20, 2017, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jul2016.xlsm 7/20/16 5:08 PM for QA/QC to EML 2.1.0

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