+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The role of competition, ecotones, and temperature in the elevational distribution of Himalayan birds

The role of competition, ecotones, and temperature in the elevational distribution of Himalayan birds

Ecology (): -

NlmCategory="UNASSIGNED">There is clear evidence that species' ranges along environmental gradients are constrained by both biotic and abiotic factors, yet their relative importance in structuring realized distributions remains uncertain. We surveyed breeding bird communities while collecting in situ temperature and vegetation data along five elevational transects in the Himalayas differing in temperature variability, habitat zonation, and bird richness in order to disentangle temperature, habitat, and congeneric competition as mechanisms structuring elevational ranges. Our results from species' abundance models representing these three mechanisms differed markedly from previous, foundational research in the tropics. Contrary to general expectations, we found little evidence for competition as a major determinant of range boundaries, with congeneric species limiting only 12% of ranges. Instead, temperature and habitat were found to structure the majority of species' distributions, limiting 48% and 40% of ranges, respectively. Our results suggest that different mechanisms may structure species ranges in the temperate Himalayas compared to tropical systems. Despite recent evidence suggesting temperate species have broader thermal tolerances than tropical species, our findings reinforce the notion that the abiotic environment has significant control over the distributions of temperate species. This article is protected by copyright. All rights reserved.

(PDF same-day service: $19.90)

Accession: 059103437

Download citation: RISBibTeXText

PMID: 27869987

DOI: 10.1002/ecy.1669

Related references

The role of ecotones in the distribution of andean birds. Ecology (Washington D C) 66(4): 1237-1246, 1985

Competition and the distribution of species along an elevational gradient. Bulletin of the Ecological Society of America 71(2 SUPPL): 299, 1990

The role of competition in the distribution of Andean birds. Ecology, 563: 562-576, 1975

Elevational distribution and extinction risk in birds. Plos One 10(4): E0121849-E0121849, 2016

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

The distribution of an avian guild along a temperate elevational gradient the importance and expression of competition. Ecological Monographs 51(1): 105-124, 1981

Elevational distribution of forest birds in the Sierra Santa Cruz, California. Northwestern NaturalistAutumn; 79(2): 41-53, 1998

Birds of the Parc National de Marojejy, Madagascar: With reference to elevational distribution. Fieldiana Zoology (97): 175-200, 2000

Temperature and competition interact to structure Himalayan bird communities. Proceedings. Biological Sciences 285(1874), 2018

Range-wide latitudinal and elevational temperature gradients for the world's terrestrial birds: implications under global climate change. Plos One 9(5): E98361-E98361, 2015

The birds of Sibuyan Island, Romblon Province, Philippines, with particular reference to elevational distribution and biogeographic affinities. Fieldiana Zoology 0(82): I-IV, 1-57, 1995

Elevational distribution and sympatry of birds of the genus Drymophila Swainson Passeriformes, Thamnophilidae in the Atlantic forest. Revista Brasileira de Zoologia 23.3 (setembro): 597-607, 2006

Patterns of elevational distribution of birds and small mammals in the humid forests of Montagne d'Ambre, Madagascar. Ecotropica 1997; 2(2): 87-98, 1996

Problems in explaining plant distribution patterns with resource competition models fire and the elevational positions of pines in the chiricahua mountains arizona usa. Bulletin of the Ecological Society of America 71(2 SUPPL): 86, 1990

Distribution of birds along an elevational gradient in the Atlantic forest of Brazil: Implications for the conservation of endemic and endangered species. Bird Conservation International 9(3): 235-253, Sept, 1999