A Four-year Summary of Breeding Bird Surveys in TFL 48 ... - BIOD

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For transects surveyed only in 2005, mean species richness and abundancediffered between TFL 48 and the Fort St. John TSA. Mean species richness for thetransects in TFL 48 was 41.3, with a maximum of 52 from Willow-Falling Creek and aminimum of 26 from Upper Wolverine. Mean bird abundance for the TFL 48 transectswas 340, with a maximum of 435 from Sukunka and a minimum of 193 from UpperWolverine. In the Fort St. John TSA, mean species richness for seven transects was32.6, with a maximum of 39 from Haystack (*only 44 stations were surveyed on thistransect) and a minimum of 28 from Peejay 2. Mean bird abundance for the Fort St.John TSA transects was 280, with a maximum of 355 from Haystack and a minimum of224 from Sikanni (only 45 stations were surveyed on this transect).Species diversity for the Fort St. John TSA transects was generally lower thanthose for TFL 48 transects, and ranged from 3.78 (Tommy Lakes 2) to 4.43 (Haystack).Diversity among the TFL 48 transects ranged from 4.00 (Upper Wolverine) to 4.82(Willow-Falling Creek), which is greater than that previously reported by Preston andCampbell (2003). This difference is likely a result of sampling a broader range offorested habitats on more transects (e.g., 7 transects in 2002 versus 15 transects in2005), and variation among years. A complete summary of species richness,abundance, and diversity for each transect is provided in Appendix 2.From 2002 – 2004, mean species richness (Figure 3), abundance (Figure 4), anddiversity (Figure 5) per transect in TFL 48 was variable, but increasing. In 2005,variability was similar to previous years, but the average was lower, perhaps as a resultof unseasonably wet conditions in that year. Both Gwillim (in 2005) and Wolverinecontribute more to the variability than other transects because of lower sample sizes.8
525048Species Richness46444240382002 2003 2004 2005YearFigure 3. Mean species richness (± SE) for TFL 48 for each year surveyed (n = 7 for2002; n = 13 for 2003; n = 15 for 2004; n = 15 for 2005).500450Abundance4003503002002 2003 2004 2005YearFigure 4. Mean bird abundance (± SE) for TFL 48 for each year surveyed (n = 7 for2002; n = 13 for 2003; n = 15 for 2004; n = 15 for 2005).9
Page 2: Table of ContentsEXECUTIVE SUMMARY.
Page 5 and 6: INTRODUCTIONWe began establishing B
Page 7 and 8: associations, as well as BEC subzon
Page 9 and 10: 2005, a handheld Magellan GPS with
Page 11: 30002500Total Observations200015001
Page 15 and 16: For TFL 48, mean rank abundance per
Page 17 and 18: 1.000.80# Birds / Station0.600.400.
Page 19 and 20: 1059075Swainson's ThrushHasler FSRM
Page 21 and 22: Preliminary TrendsAnnual variation
Page 23 and 24: Alder FlycatcherAmerican Redstart30
Page 25 and 26: Species Listings: Committee on the
Page 27 and 28: DISCUSSION and RECOMMENDATIONSCover
Page 29 and 30: scale. Because of the way in which
Page 31 and 32: subzone preference by species, and
Page 33 and 34: Preston, M.I., and P. Vernier. 2003
Page 35 and 36: APPENDICESAppendix 1. List of speci
Page 37 and 38: Code Species Scientific Name TFL 48

A Four-year Summary of Breeding Bird Surveys in TFL 48 ... - BIOD

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