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Nov 8, 2020 · Migration, in contrast to localized station-keeping movements, has been more specifically defined as a specialized behavior that not only involves shifts in habitat in search of optimal conditions, but that also meets at least some of the following five criteria: 1) persistent movement that is greater in duration than the local station-keeping ...
- Vicky J Meretsky, Jonathan W Atwell, Jeffrey B Hyman
- 2011
Jul 17, 2014 · Migration is a dramatic behaviour distinct from other movements. It is an important component of life histories of biodiverse organisms including terrestrial and marine vertebrates, insects, many invertebrates, and the propagules of some plants.
- Hugh Dingle
- Abstract
- The Scope of Migration
- Varieties of Migration
- A Holistic View of Migration
- Migration as A Form of Individual Movement
- The Function of Migration
- Migration and Populations
- Conclusions: What Is Migration, and What Studies Are needed?
- Acknowledgements
For the public and for many biologists, the wordmigration evokes visions of “heroic” movements of whole populations over long distances. When barn swallows (Hirundo rustica) appear over an English village in April, when Pacific salmon (Oncorhynchus spp.) leap the rapids of an Alaskan river, or when southern right whales (Eubaleana australis) come t...
Drawing on dictionary definitions (Taylor 1986, Gatehouse 1987) and the biological and natural history literature, we suggest that the word migration(as applied to animals) can evoke four different but overlapping concepts: (1) a type of locomotory activity that is notably persistent, undistracted, and straightened out; (2) a relocation of the anim...
Migration can take a number of forms and has been described by biologists in different ways. We list many of these migratory patterns in table 1, classifying them by whether the focus is on the organism, the spatial or temporal attributes, or the medium in which migration takes place. Migrants are often classified as either obligate or facultative,...
Recognition that the various phenomena comprising migration occur across a series of organizational levels helps greatly to distinguish them, refine our separate knowledge of each, and develop both descriptive and explanatory understandings by drawing from lower and higher levels (Rogers 1983). Nevertheless, migration is a single phenomenon, and we...
Although the outcome of migration can be viewed as a population process, it is useful to focus first on the migratory behavior of individuals, as this underlies the collective aspects. Further, because natural selection acts primarily on individuals, understanding the function of migration, and how migration systems are maintained and evolve, will ...
Southwood (1962) showed that in insects migration is associated with impermanent habitats. When resources are temporary in relation to generation time, migration and/or dormancy are required strategies (Southwood 1962, 1977, Dingle 1996). Southwood (1977) and Solbreck (1978)later made clear how changes in habitat favorability in both time and space...
For much of its history, ecology has focused more on population dynamics over time than on changes in spatial distributions. In this perspective, changes in population size arise both through births and deaths and through emigration and immigration to and from external sinks and sources (Thomas and Kunin 1999). By recognizing the spatial dimensions...
We note first that a definition of a trait or syndrome in biology should provide clear indication that it can respond to natural selection. With few exceptions, that means the definition must be couched in terms of individuals. This is no less true for migration. Selection has produced specific behaviors and responses to the environment to solve co...
H. D. wishes to thank Meron Zalucki for support, discussion, and suggestions; Matt Watts for technical support and assistance; and the University of New South Wales for travel funding in support of manuscript preparation. H. D.'s long-term research on migration has been funded by the US National Science Foundation. V. A. D. acknowledges funding sup...
- Hugh Dingle, V. Alistair Drake
- 2007
Every year, billions of migratory animals cross the planet in pursuit of increased foraging opportunities, improved safety, and higher reproductive output. In so doing, these migrants transport nutrients, energy, and other organisms (including seeds, mollusks, parasites, and pathogens) between disparate locations.
- S Bauer, Bethany J Hoye, Bethany J Hoye
- 2014
Here, we describe how a new migration modelling framework – Spatially explicit Adaptive Migration Models (SAMMs) – can simulate the optimal behavioural decisions required to migrate across open land- or seascapes varying in character over space and time, without requiring predefined behavioural rules.
Jul 12, 2019 · An analysis of the relations between climatic-environmental migration and urban dynamics draws the reader’s attention to certain problematic areas and potential vicious circles, most notably the problem of urban gigantism, especially in river delta areas, in African and Asiatic cities.
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Aug 23, 2017 · We analyzed citizen science and satellite data to develop predictive models of bird populations and the availability of wetlands, which we used to determine temporal and spatial gaps in habitat during a vital stage of the annual migration.
