By Robert S. Ridgely
Этот информативный определитель включает следующие материалы: 121 цветную таблицу, представляющие детальные рисунки 1500 видов певчих птиц; one hundred sixty дополнительных цветных иллюстраций подвидов и самок; современные цветные карты распространения для всех рассмотренных видов; текстовые описания, характеризующие
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Additional info for Field Guide to the Songbirds of South America: The Passerines
Of course, the human desire to be surrounded by aesthetically pleasing species is still manifest in the variety of horticultural and landscaping plants available at your nearest garden market. , New Zealand). 2 Westward range expansion of the European starling (Sturnus vulgaris) across North America following intentional release into Central Park, New York, in 1890. [Redrawn from Krebs, C. J. 1988. The message of ecology. ] Transport Vectors and Pathways 27 The number of species and the number of individuals transported via these vectors is immense.
J. 1991. When biotas meet: understanding biotic interchange. Science 253: 1099–1104. 3 Trends in Numbers of Invaders Overview In Chapter 2 we outlined the common modes of transporting nonnative species and discovered that these modes can be both taxon and site specific. In this chapter, we will explore the effect these trends have on the rate at which non-native species are detected, and the spatial discontinuities in numbers of non-native species that can often result. Because we often do not know how many, or which, species are being transported and released, this chapter relies heavily on patterns in the relative number of non-native species that have successfully established (for at least long enough to be recorded) across decades or locations.
22, Cooper Ornithological Society, Camarillo, CA, with permission. game and importing aesthetically pleasing birds, or keeping birds as pets (with pet species being the main source of non-natives in Hawaii since the 1960s). This effect of human interest on temporal invasion patterns can also be seen among the non-native plants recorded within the Czech Republic (Pysek et al. 2003). Pysek and his colleagues used the remarkably well-documented Czech flora to build a timeline for the introduction of more than 1000 plants brought in after the year 1500.