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. Bonner zoologische Monographien. Zoology. 64. Fig. 24: Zoogeography of the trans-Andean lowland forest region. Explanation: Hatched vertically — distribution centers (core areas) characterized by strong endemic faunal element. Crosses — areas inhabited by fauna of mixed origin derived from adjacent and more distant centers. Small core areas probably also exist along the mountain slopes of areas 7 and 11 (see text for details). 1 southeastern Mexican forest region. 2 Yucatan forest region. 3 Caribbean northern Middle America center. 4 Honduras-Nicaragua suture zone. 5 Caribbean Costa Rica cen

. Bonner zoologische Monographien. Zoology. 64. Fig. 24: Zoogeography of the trans-Andean lowland forest region. Explanation: Hatched vertically — distribution centers (core areas) characterized by strong endemic faunal element. Crosses — areas inhabited by fauna of mixed origin derived from adjacent and more distant centers. Small core areas probably also exist along the mountain slopes of areas 7 and 11 (see text for details). 1 southeastern Mexican forest region. 2 Yucatan forest region. 3 Caribbean northern Middle America center. 4 Honduras-Nicaragua suture zone. 5 Caribbean Costa Rica cen Stock Photo
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1708 x 1463 px | 28.9 x 24.8 cm | 11.4 x 9.8 inches | 150dpi

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. Bonner zoologische Monographien. Zoology. 64. Fig. 24: Zoogeography of the trans-Andean lowland forest region. Explanation: Hatched vertically — distribution centers (core areas) characterized by strong endemic faunal element. Crosses — areas inhabited by fauna of mixed origin derived from adjacent and more distant centers. Small core areas probably also exist along the mountain slopes of areas 7 and 11 (see text for details). 1 southeastern Mexican forest region. 2 Yucatan forest region. 3 Caribbean northern Middle America center. 4 Honduras-Nicaragua suture zone. 5 Caribbean Costa Rica center. 6 Pacific Costa Rica center. 7 Panama-northwestern Colombia suture zone. 8 Pacific Colombia (Chocö) center. 9 Northwestern Ecuador forest region. 10 Cauca-Magdalena (Nechi) center. 11 Caribbean forest region (Santa Marta, Maracaibo, northern Venezuela). Mountains above 1000 m elevation are in black. Blank lowland areas represent nonforest regions (see Fig. 1). to open areas such as grassland savanna, dry open woodland, cactus plains, thorn scrub, etc. The distribution of forest birds in northwestern Colombia permits one to distinguish the Zoogeographie Chocö region (Pacific Colombia-north- western Ecuador) from the Darien-Urabä region. Historically, the Chocö region represents the center of origin of the Chocö fauna, whereas the Darien-Urabä region forms part of the Panama-northwestern Colombia suture zone, as discussed above. The range limits of species confined to either one of these areas form a fairly well defined "boundary" or narrow transition zone in the lower Atrato Valley extending from Mutatä south-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig

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