TITLE
       Bird Abundances at Hubbard Brook (1969-1998) and on three replicate plots (1986-1998) in the White Mountain National Forest

PRINCIPAL INVESTIGATOR
        Richard T. Holmes

OTHERS INVOLVED
       Sturges, Frank W.
       Sherry, Thomas W.

BEGIN DATE
       1969

END DATE
       1998

LOCATION
       Bird Area at HEBF, plus 3 other sites in WMNF

LOCATION DESCRIPTION
       HBEF data obtained in 10-ha bird study plot, adjacent to (south/southwest) of Weir 6. Other 3 "replicate" sites located outside HBEF, but in nearby sections of the White Mountain National Forest at same elevations and aspects and in stands with simlar forest history and vegetation. These are as follows:

1) Moosilauke, 8 km north of HBEF. Plot located 100 m NW of NH route 118, 8 km west of North Woodstock NH (in township of Woodstock, NH).

2) Russell Pond, 11 km NE of HBEF. Plot located 1.2 km SW of Russell Pond, Thornton, NH.

3) Stinson Mountain, 13 km SW of HBEF. Plot located 1.7 km E of Stinson Mountain lookout tower, Rumney, NH.

DATA DESCRIPTION
       The data file, bird.txt indicates the number of adult birds (males and females) per 10 ha, taking into account territories that partially overlap the 10 hectare area

SAMPLING DESIGN
       Bird abundances have been determined from timed censuses, territory maps, nest locations, etc. For a more thorough description see Holmes, Sturges, and Sherry. 1986. Ecological Monographs 56: 201-220.

• Holmes, R. T. and F. W. Sturges. 1975. Bird community dynamics and energetics in a northern hardwoods ecosystem. J. Anim. Ecol. 44:175-200.
• Holmes, R. T., T. W. Sherry and F. W. Sturges. 1986. Bird community dynamics in a temperate diciduous forest: long-term trends at Hubbard Brook. Ecol. Monogr. 56(3):201-220.
• Holmes, R. T. and T. W. Sherry. 1988. Assessing population trends of New Hampshire forest birds: Local versus regional patterns. The Auk 105:756-768.
• Holmes, R. T. and T. W. Sherry. 30-year bird population trends in an unfragmented temperate deciduous forest: the importance of habitat change. Submitted for publication.

ACCESS
       Public

DATA LOCATION
       USDA Forest Service, Durham, NH

LAST UPDATED
       September 2000

CONTACT PERSON
      Richard T. Holmes
      Department of Biological Sciences
      Dartmouth College
      Hanover, NH 03755
      E-mail: richard.t.holmes@dartmouth.edu

VARIABLES
        Column 1 = Bird species
        Columns 2-28 = Year

CODES
        Species present but occurring at very low numbers (<0.5 individuals/10 ha) are indicated by the letter t (= trace).

DATA
       The file hb_bird.txt contains Hubbard Brook bird abundance data.
       The file mk_bird.txt contains Moosilauke bird abundance data.
       The file rp_bird.txt contains Russell Pond bird abundance data.
       The file sm_bird.txt contains Stinson Mountain bird abundance data.