. Bonner zoologische Monographien. Zoology. JAHN, BIRD COMMUNITIES OF THE ECUADORIAN CHOCO TABLE 46. Life zone selection of forest-dependent birds between sea level and an elevation of c. 900 m in Esmeraldas Province, Ecuador. Shown are species (n = 154) that inhabit three or less life zones in the region, and so may have a relatively narrow niche width regarding climatic conditions and other environmental factors. See Appendix 8 for the abundance rank per life zone for those species already recorded in Playa de Oro. Abbreviations used: (a) Life zones: sensu Holdridge (1967), cf. Table 1; TrDF
. Bonner zoologische Monographien. Zoology. JAHN, BIRD COMMUNITIES OF THE ECUADORIAN CHOCO TABLE 46. Life zone selection of forest-dependent birds between sea level and an elevation of c. 900 m in Esmeraldas Province, Ecuador. Shown are species (n = 154) that inhabit three or less life zones in the region, and so may have a relatively narrow niche width regarding climatic conditions and other environmental factors. See Appendix 8 for the abundance rank per life zone for those species already recorded in Playa de Oro. Abbreviations used: (a) Life zones: sensu Holdridge (1967), cf. Table 1; TrDF = tropical dry forest; deciduous and semi-deciduous lowland forest close to the Pacific coast; annual precipitation < 2000 mm; in Esmeraldas Province this forest type has almost entirely disappeared; TrHF = tropical humid forest; TrWF = tropical wet forest; low foothills = lowermost foothills (c. 100-400 m), which may be covered by either tropical wet forest or premontane wet forest; PmPF = premontane pluvial forest; here I included species that regularly or seasonally occur down to about 900 m or lower; * = species recorded in Playa de Oro until Nov. 2004 (Appendix 6); ? = records from Playa de Oro that need further confirmation or are regarded as uncertain (Appendix 6); + = species is regularly present; (+) = species might occur locally or seasonally but presumably at very low population densities. Note: Species that are basically restricted to only one life zone within the area considered have a very dark gray background, taxa that occur mostly in two life zones have a medium dark background, and those occupying three life zones have a light gray background in the corresponding field. The number of singletons for tropical dry forest and premontane pluvial forest would be considerably lower if other life zones, , in the southwestern lowlands as well as in the subtropics, had been taken into account. Life zones a Species TrDF TrHF TrWF Low foothills PmPF Crypturellus b
Size: 1364px × 1832px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
