scholarly journals The global ecology of bird migration: patterns and processes

2016 ◽  
Vol 8 (3) ◽  
Author(s):  
Marius Somveille
Keyword(s):  
Bird Migration ◽  
Migration Patterns ◽  
Patterns And Processes

scholarly journals Forecasting Avian Migration Patterns using a Deep Bidirectional RNN Augmented with an Auxiliary Task

2020 ◽  
Author(s):  
Kehinde Owoeye
Keyword(s):  
Bird Migration ◽  
Satellite Telemetry ◽  
Biodiversity Loss ◽  
Critical Infrastructures ◽  
Cathartes Aura ◽  
Migration Patterns ◽  
Building Models ◽  
High Tension ◽  
Avian Biodiversity ◽  
Better Than

Early forecasting of bird migration patterns has important application for example in reducing avian biodiversity loss. An estimated 100 million to 1 billion birds are known to die yearly during migration due to fatal collisions with human made infrastructures such as buildings, high tension lines, wind turbines and aircrafts thus raising a huge concern for conservationists. Building models that can forecast accurate migration patterns is therefore important to enable the optimal management of these critical infrastructures with the sole aim of reducing biodiversity loss. While previous works have largely focused on the task of forecasting migration intensities and the onset of just one migration state, predicting several migration states at even finer granularity is more useful towards optimally managing the infrastructures that causes these deaths. In this work, we consider the task of forecasting migration patterns of the popular Turkey Vulture (Cathartes aura) collected with the aid of satellite telemetry for multiple years at a resolution of one hour. We use a deep Bidirectional-GRU recurrent neural network augmented with an auxiliary task where the state information of one layer is used to initialise the other. Empirical results on a variety of experiments with our approach show we can accurately forecast migration up to one week in advance performing better than a variety of baselines.

Changes in bird-migration patterns associated with human-induced mortality

2016 ◽  
Vol 31 (1) ◽  
pp. 106-115 ◽  
Author(s):  
Carlos Palacín ◽  
Juan C. Alonso ◽  
Carlos A. Martín ◽  
Javier A. Alonso
Keyword(s):  
Bird Migration ◽  
Migration Patterns

8. The future of international migration

2016 ◽  
Author(s):  
Khalid Koser
Keyword(s):  
International Migration ◽  
Short Term ◽  
Temporary Migration ◽  
Migration Patterns ◽  
Current Trends ◽  
The Future ◽  
Immigration Politics ◽  
Patterns And Processes ◽  
Asian Migration ◽  
The Impact

The evidence on the positive economic impact of migration has become stronger; yet anti-immigration politics and sentiments have increased. ‘The future of international migration’ explores the coming challenges for migrants, citizens, and policymakers in light of the current trends in migration patterns and processes as well as policies. It considers the changes in Asian migration; the growing issue of increased internal migration; the impact of climate change on migration; temporary migration which combats brain drain and fills specific short-term gaps in employment; the shifting policies on irregular migration from control to management; the reform of the international refugee regime; and the challenges of integration and the need for respect of migrants.

scholarly journals Bird migration patterns in the arid southwest-Final report

2010 ◽  
Author(s):  
Janet M. Ruth ◽  
Rodney K. Felix ◽  
Robert H. Dieh
Keyword(s):  
Bird Migration ◽  
Final Report ◽  
Migration Patterns ◽  
Arid Southwest

scholarly journals Spatio-temporal dynamics of global H5N1 outbreaks match bird migration patterns

2009 ◽  
Vol 4 (1) ◽  
pp. 65 ◽  
Author(s):  
Yali Si ◽  
Andrew K. Skidmore ◽  
Tiejun Wang ◽  
Willem F. De Boer ◽  
Pravesh Debba ◽  
...  
Keyword(s):  
Bird Migration ◽  
Temporal Dynamics ◽  
Migration Patterns ◽  
Spatio Temporal

scholarly journals The Influence of Locality on Migration: a Comparative Study of Britain and Sweden in the Nineteenth Century

2013 ◽  
pp. 13-27 ◽  
Author(s):  
Colin G. Pooley
Keyword(s):  
Nineteenth Century ◽  
Comparative Studies ◽  
Population Studies ◽  
Local Level ◽  
National Level ◽  
Migration Patterns ◽  
Migration Data ◽  
Demographic Processes ◽  
Regional Population ◽  
Patterns And Processes

This paper uses migration data for Britain and Sweden to critically examine the contention that locality or place influenced migration patterns and processes in the nineteenth century. Despite their very different geographies patterns of migration in Britain and Sweden in the nineteenth century were remarkably similar. Any differences can be accounted for by limitations in the available data. It is argued that at the national level geography had little impact on migration, but that at the local level most people in both countries were tied closely to particular localities. However, it is suggested that this is not primarily due to the specific characteristics of a place but, rather, can be attributed to the ties to family, friends and community which, while being situated in a place, are not produced by it. Finally, it is suggested that further comparative studies of demographic processes can aid the interpretation of local and regional population studies.

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