Least Bittern (Ixobrychus exilis) Survey Protocol

Waterbirds ◽  
2011 ◽  
Vol 34 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Benoît Jobin ◽  
Ron Bazin ◽  
Laurie Maynard ◽  
Angela McConnell ◽  
Jennifer Stewart
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern ◽  
Survey Protocol

Least Bittern (Ixobrychus exilis)

2009 ◽  
Author(s):  
Alan F. Poole ◽  
Peter E. Lowther ◽  
James P. Gibbs ◽  
F. A. Reid ◽  
Scott M. Melvin
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern

Least Bittern (Ixobrychus exilis)

2009 ◽  
Author(s):  
Alan F. Poole ◽  
Peter E. Lowther ◽  
James P. Gibbs ◽  
F. A. Reid ◽  
Scott M. Melvin
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern

Least Bittern (Ixobrychus exilis)

2020 ◽  
Author(s):  
Alan F. Poole ◽  
Peter E. Lowther ◽  
James P. Gibbs ◽  
F. A. Reid ◽  
Scott M. Melvin
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern

scholarly journals Cory’s Bittern, Ixobrychus “neoxenus” exilis: morph, mutant, or mixed bag?

2015 ◽  
Vol 128 (4) ◽  
pp. 350
Author(s):  
Paul Smith
Keyword(s):  
Colour Morph ◽  
Review Of The Literature ◽  
Dark Colour ◽  
Ixobrychus Exilis ◽  
Least Bittern ◽  
Temporal And Spatial

Cory’s Bittern (Ixobrychus “neoxenus” exilis) is an enigmatic form, usually referred to as a rare dark colour phase or morph of Least Bittern (Ixobrychus exilis [Gmelin, 1789]). A review of the literature indicates that birds identified as Cory’s Bittern show considerable plumage variation and commonly exhibit multiple plumage anomalies. Temporal and spatial clumping of records shows that they are of irregular occurrence; thus, they do not meet the criteria for recognition as a colour morph. Cory’s Bittern should thus be viewed as a colloquial name that refers to any one of a number of abnormally dark-plumaged, genetically undefined and phenotypically heterogeneous Least Bitterns.

Response of a Least Bittern(Ixobrychus exilis)Population to Interannual Water Level Fluctuations

Waterbirds ◽  
2009 ◽  
Vol 32 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Benoît Jobin ◽  
Luc Robillard ◽  
Claudie Latendresse
Keyword(s):  
Water Level ◽  
Water Level Fluctuations ◽  
Ixobrychus Exilis ◽  
Least Bittern

Small unmanned aircraft: precise and convenient new tools for surveying wetlands

2013 ◽  
Vol 01 (01) ◽  
pp. 15-24 ◽  
Author(s):  
Dominique Chabot ◽  
David M. Bird
Keyword(s):  
Land Cover ◽  
Ground Level ◽  
Unmanned Aircraft ◽  
Unmanned Aircraft Systems ◽  
Spectral Image ◽  
Ixobrychus Exilis ◽  
Least Bittern ◽  
Manual Classification ◽  
Water Vegetation

Unmanned aircraft systems (UAS) could be of benefit for surveying wetlands, which often have spatially complex habitats that are challenging to navigate and assess at ground level. We used a small UAS to acquire aerial imagery and characterize land cover in a 128 ha wetland impoundment as part of a conservation study of the least bittern (Ixobrychus exilis). The method was successful in gathering sub-decimetre georeferenced imagery that clearly revealed the fine-scale water–vegetation interface and in which several types of vegetation could be distinguished and classified using spectral image analysis software. Simplified three-category land cover classifications obtained in this manner showed strong agreement with manual classification of random points in the imagery, as evidenced by a kappa coefficient of 87.19% (n = 600). Compared to cover estimates made during concurrent ground-based surveys in 30 sampling plots, UAS data yielded overall similar water–vegetation ratios, but proved more effectual for detecting small amounts of highly interspersed water. Significant differences (p = 0.004) in cover estimates of the dominant vegetation, cattail, were likely primarily due to limitations of ground-based surveys. Given the effective and convenient application of a UAS in this study, we recommend their further use in wetland-related research and management.

scholarly journals Parties’ Preferences for Office and Policy Goals

Games ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 6
Author(s):  
Anna Bassi
Keyword(s):  
Rational Choice ◽  
Choice Models ◽  
Comprehensive Analysis ◽  
Government Formation ◽  
Expert Survey ◽  
Policy Goals ◽  
Preference Ratings ◽  
The Government ◽  
Party Behavior ◽  
Survey Protocol

Although parties’ preferences for office and policy goals have been featured by many rational choice models of party behavior and a majority of coalition theories, the literature still lacks a measure and a comprehensive analysis of how parties’ preferences vary among parties and across countries. This study aims to fill this gap by presenting the results of an original expert survey protocol, which finds that parties pursue both goals simultaneously as office is sought both as and an end and as a means to affect policy, and that the degree to which they prefer policy versus office objectives varies across parties and countries. I provide an application of the preference ratings for policy versus office in the context of government formation, by using the ratings to solve for and predict the equilibrium coalition that should have formed in Spain after the 2015 elections. The government predicted by the model matches the government that formed, providing evidence of the ability of the preference ratings to generate reliable predictions of the composition of government coalitions.

scholarly journals Correction to: IMMPACT-recommended outcome measures and tools of assessment in burning mouth syndrome RCTs: an international Delphi survey protocol

Trials ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Barbara Carey ◽  
Arwa M. Farag ◽  
Cibele Nasri-Heir ◽  
Gary D. Klasser ◽  
Anura Ariyawardana ◽  
...  
Keyword(s):  
Outcome Measures ◽  
Burning Mouth Syndrome ◽  
Delphi Survey ◽  
Burning Mouth ◽  
Survey Protocol

An amendment to this paper has been published and can be accessed via the original article.

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