FACTORS AFFECTING SONGBIRD NEST SURVIVAL IN RIPARIAN FORESTS IN A MIDWESTERN AGRICULTURAL LANDSCAPE

The Auk ◽  
2004 ◽  
Vol 121 (3) ◽  
pp. 726 ◽  
Author(s):  
Rebecca G. Peak ◽  
Frank R. Thompson ◽  
Terry L. Shaffer
The Auk ◽  
2004 ◽  
Vol 121 (3) ◽  
pp. 726-737 ◽  
Author(s):  
Rebecca G. Peak ◽  
Frank R. Thompson, ◽  
Terry L. Shaffer

The Auk ◽  
2004 ◽  
Vol 121 (3) ◽  
pp. 726-737
Author(s):  
Rebecca G. Peak ◽  
Frank R. Thompson ◽  
Terry L. Shaffer

Abstract We investigated factors affecting nest success of songbirds in riparian forest and buffers in northeastern Missouri. We used an information-theoretic approach to determine support for hypotheses concerning effects of nest-site, habitat-patch, edge, and temporal factors on nest success of songbirds in three narrow (55–95 m) and three wide (400–530 m) riparian forests with adjacent grassland-shrub buffer strips and in three narrow and three wide riparian forests without adjacent grassland-shrub buffer strips. We predicted that temporal effects would have the most support and that habitat-patch and edge effects would have little support, because nest predation would be great across all sites in the highly fragmented, predominantly agricultural landscape. Interval nest success was 0.404, 0.227, 0.070, and 0.186, respectively, for Gray Catbird (Dumetella carolinensis), Northern Cardinal (Cardinalis cardinalis), Indigo Bunting (Passerina cyanea), and forest interior species pooled (Acadian Flycatcher [Empidonax virescens], Wood Thrush [Hylocichla mustelina], Ovenbird [Seiurus aurocapillus], and Kentucky Warbler [Oporornis formosus]). The effect of nest stage on nest success had the most support; daily nest success for Gray Catbird and Indigo Bunting were lowest in the laying stage. We found strong support for greater nest success of Gray Catbird in riparian forests with adjacent buffer strips than in riparian forests without adjacent buffer strips. Patch width also occurred in the most-supported model for Gray Catbird, but with very limited support. The null model received the most support for Northern Cardinal. Riparian forests provided breeding habitat for area-sensitive forest species and grassland-shrub nesting species. Buffer strips provided additional breeding habitat for grassland-shrub nesting species. Interval nest success for Indigo Bunting and area-sensitive forest species pooled, however, fell well below the level that is likely necessary to balance juvenile and adult mortality, which suggests that when riparian forests are located within agricultural landscapes, the potential even for wide riparian forests with adjacent buffer strips to provide high-quality breeding habitat is severely diminished for some species.


2007 ◽  
Vol 71 (6) ◽  
pp. 1773-1783 ◽  
Author(s):  
BRENDAN J. MOYNAHAN ◽  
MARK S. LINDBERG ◽  
JAY J. ROTELLA ◽  
JACK WARD THOMAS

2009 ◽  
Vol 73 (3) ◽  
pp. 407-413 ◽  
Author(s):  
Jennifer L. Reidy ◽  
Frank R. Thompson ◽  
Rebecca G. Peak

2016 ◽  
Vol 128 (1) ◽  
pp. 108-119 ◽  
Author(s):  
Shawn M. Crimmins ◽  
Patrick C. McKann ◽  
Joseph R. Robb ◽  
Jason P. Lewis ◽  
Teresa Vanosdol ◽  
...  

2011 ◽  
Vol 75 (5) ◽  
pp. 1040-1050 ◽  
Author(s):  
Kathleen E. Franzreb ◽  
Stanley J. Zarnoch

2021 ◽  
Vol 01 (01) ◽  
pp. 24-46
Author(s):  
Subodh Khanal ◽  
Asmita Ghimire ◽  
Aastha Acharya ◽  
Anisha Sapkota ◽  
Gokarna Adhikari

This study was designed to assess the access of Nepalese farmers to the training and extension service, gender division on agricultural work, and factors affecting agrobiodiversity management activities. A total of 2,817 respondents were interviewed at different locations throughout Nepal. The information was collected using the mWater surveyor. Descriptive and inferential analyses were done. The respondents having received training in agriculture were significantly higher among elite, educated, and agricultural households. Access to extension facilities was significantly determined by the type of household, ethnicity, occupation, and education of respondents. Male domination in the choice of crops, land preparation, and seed selection were significantly higher in male-headed households, marginalized groups, and agricultural households. However, females were more likely to be involved in seed sowing. The male domination in male-headed households were significantly higher for applying fertilizers, weeding, irrigation, and pest control. Among elite ethnic groups, domination of males was significantly higher for fertilizer application. The role of the male in agricultural households was significantly higher in all aspects. One unit increase in the area increased the likelihood of male involvement in irrigation by 30%. The males are likely to be more involved in harvesting, sales of products, and control of income. Elite and educated respondents coupled with access to training practiced more crop rotation compared to the rest. The likelihood of practicing intercropping and mixed cropping was influenced by extension facilities and training facilities. Elite groups and farmers with extension facilities tended to practice more agroforestry. So, the types of households, education, and ethnicity have a key role in the gender differentiation in agriculture operation. Moreover, training and extension facilities help a lot in the conservation and practice of agrobiodiversity. There is an urgent need in improving the women's role and overall management of the agricultural landscape.


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