+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Abundance and productivity of birds over an elevational gradient



Abundance and productivity of birds over an elevational gradient



U S Forest Service General Technical Report PSW: 183: 121-132



This study is investigating the abundance and productivity of birds breeding in four forest types over an elevational gradient in conifer forests of the southern Sierra Nevada of California to identify the most productive habitats for each species, and to examine elevational shifts in abundance, especially as they relate to temperature and precipitation. Species richness and abundance decreased with increasing elevation, although higher elevations were important for cavity-nesting species. Abundance and nest success varied across years and forest types. Dark-eyed juncos (Junco hyemalis) were most abundant at the lowest and highest elevations and had their highest nest success in the lodgepole pine (Pinus contorta) forest type. Excluding the ponderosa pine (Pinus ponderosa) forest type, where they were rare, dusky flycatchers (Empidonax oberholseri) were least abundant in true fir sites but had their highest nest success and productivity there. Abundance vs. nest success and number of young fledged were both negatively correlated, suggesting that dusky flycatchers were unable to assess the probability of successfully nesting in a given habitat prior to settling. In accordance with expectations, 15 species exhibited downslope elevational shifts following severe winters in 1995 and 1998, and six species exhibited upslope shifts.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 037742175

Download citation: RISBibTeXText


Related references

Elevational movements of large frugivorous birds and temporal variation in abundance of fruits along an elevational gradient. Ornitologia Neotropical30: 433-445, 2004

Abundance and productivity of warbling vireos across an elevational gradient in the Sierra Nevada. Condor. May; 1082: 315-325, 2006

No evidence for a positive correlation between abundance and range size in birds along a New Guinean elevational gradient. Emu - Austral Ornithology, 2018

Ant Diversity and Abundance Along an Elevational Gradient in the Philippines. Biotropica 29(3): 349-363, 1997

Ant diversity and abundance along an elevational gradient in the Philippines. Biotropica. September; 293: 349-363, 1997

Temporal Variation in Bird and Resource Abundance Across an Elevational Gradient in Hawaii. Auk 128(1): 113-126, 2011

Effects of bird predation on arthropod abundance and tree growth across an elevational gradient. Journal of Avian Biology 41(4): 367-377, 2010

Distribution and abundance of small mammals along a subtropical elevational gradient in central Taiwan. Journal Of Zoology (london). 234(4): 577-600, 1994

Environmental and genetic control of insect abundance and herbivory along a forest elevational gradient. Oecologia 167(1): 117-129, 2011

Abundance and distribution of parrots along the elevational gradient of Calilegua National Park, Argentina. Ornitologia Neotropical 16(1): 43-52, 2005

Diversity and abundance of epiphytic and terrestrial ferns along an elevational gradient Implications for dispersal and migration. Ecological Society of America Annual Meeting Abstracts 88: 350, 2003

Variation in liana abundance and biomass along an elevational gradient in the tropical Atlantic Forest Brazil. Ecological Research 27(2): 323-332, 2012

Annual species abundance in a tidal freshwater marsh Germination and survival across an elevational gradient. Wetlands 28(2): 521-526, 2008

Primary productivity and ecosystem development along an elevational gradient on Mauna Loa, Hawai'i. Ecology 78(3): 707-721, 1997

Temporal variation in birds and fruits along an elevational gradient in Costa Rica. Ecology (Washington D C): 721: 180-193, 1991