Habitat-specific population growth of a farmland bird.

PloS One
Debora ArltTomas Pärt

Abstract

To assess population persistence of species living in heterogeneous landscapes, the effects of habitat on reproduction and survival have to be investigated. We used a matrix population model to estimate habitat-specific population growth rates for a population of northern wheatears Oenanthe oenanthe breeding in farmland consisting of a mosaic of distinct habitat (land use) types. Based on extensive long-term data on reproduction and survival, habitats characterised by tall field layers (spring- and autumn-sown crop fields, ungrazed grasslands) displayed negative stochastic population growth rates (log lambda(s): -0.332, -0.429, -0.168, respectively), that were markedly lower than growth rates of habitats characterised by permanently short field layers (pastures grazed by cattle or horses, and farmyards, log lambda(s): -0.056, +0.081, -0.059). Although habitats differed with respect to reproductive performance, differences in habitat-specific population growth were largely due to differences in adult and first-year survival rates, as shown by a life table response experiment (LTRE). Our results show that estimation of survival rates is important for realistic assessments of habitat quality. Results also indicate that grazed gras...Continue Reading

References

Jun 22, 2001·Proceedings. Biological Sciences·J ScheirsR Verhagen
Jul 19, 2002·Proceedings. Biological Sciences·P F DonalM F Heath
May 19, 2006·Ecological Applications : a Publication of the Ecological Society of America·J David WiensRichard T Reynolds
Nov 23, 2007·The Journal of Animal Ecology·Debora Arlt, Tomas Pärt

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Citations

Sep 10, 2013·Oecologia·Meit ÖbergMatthew Low
Nov 5, 2010·Proceedings. Biological Sciences·Michael J O Pocock
Feb 1, 2014·Environmental Management·Timo P PitkänenNiina Käyhkö
May 10, 2015·Environmental Monitoring and Assessment·Michael GlemnitzUlrich Stachow
Feb 16, 2019·Ecology and Evolution·Matthieu PaquetTomas Pärt

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Software Mentioned

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