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103 results for “lowland neotropical rainforest”
Figures 1–3. 1 in Nocturnal multi-species roosts of Cicindelidae (Coleoptera) in a Neotropical lowland rainforest
Figures 1–3. 1) Forest path #1 at the study site in lowland terra firme Venezuelan rainforest, February 1999. 2) Communal roost of Odontocheila Laporte de Castelnau spp. (O. confusa (Dejean) and O. angulipenis W. Horn/O. margineguttata (Dejean)) at the study site in lowland terra firme Venezuelan rainforest, June 1998. 3) Communal roost of Odontocheila Laporte de Castelnau spp. (O. confusa (Dejean) and O. angulipenis W. Horn/O. margineguttata (Dejean)) at the study site in lowland terra firme Venezuelan rainforest, May 1998.
Fig. 97 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 97. Results of biogeographic analyses of 12 nonvolant rainforest mammal faunas (see table 55 for geographic coordinates and other locality information). Solid and broken contours enclosing various groups were drawn following the same conventions explained in the caption to figure 96. The raw (presence/absence) data on which both clustering and PAE were based are tabulated in appendix 2.
Fig. 95 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 95. Distribution of lowland rainforest on the Central and South American mainland (see Voss and Emmons, 1996, for references). Major habitat discontinuities delimit four distinct regions: (1) the Andes and the Serranía de Perijá separate transAndean rainforests to the west from Venezuelan coastal rainforests and Amazonian rainforests to the east; (2) the Llanos and the lower Orinoco separate Venezuelan coastal rainforests to the north and west from Amazonia to the south and east; (3) an arid diagonal of xeromorphic biomes (Caatinga, Cerrado, Chaco) separates Amazonia to the northwest from the Atlantic rainforests (Mata Atlantica) to the southeast. The location of our inventory site at Paracou is indicated by the arrow.
Fig. 94 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 94. Percent faunal similarity (Jaccard's coefficient of faunal similarity Χ 100) plotted against airline distance for all 45 pairwise comparisons among ten nonvolant rainforest mammal inventories (tables 62, 63).
Fig. 89 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 89. Analysis of faunal similarity among nonvolant mammal inventories from 12 Neotropical rainforest localities. Faunal similarity was quantified between each pair of localities (i, j) by Jaccard's coefficient, Jij = Cij/Tij, where Cij is the number of species common to both faunas and Tij is the total number of species in both faunas combined (Tij = Ni + Nj — Cij). Localities were clustered by the unweighted pairgroup method using arithmetic averages (Sneath and Sokal, 1973) for comparability with other recent biogeographic analyses of Neotropical vertebrates (e.g., da Silva and Sites, 1995). The bottom scale shows the clustering level in units of percent faunal similarity (J Χ 100). No historical or other causal interpretation is implied by these results, nor do we assume that a hierarchical model is necessarily appropriate except as a convenient summary graphic.
Fig. 93 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 93. Percent faunal similarity (Jaccard's coefficient of faunal similarity Χ 100) plotted against airline distance for all 45 pairwise comparisons among ten rainforest bat inventories (tables 62, 63).
Fig. 91 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 91. Species accumulation for all mammals at Paracou, where we recorded 128 species in the course of 202 field days from 1991 to 1994. ''Minimum known diversity'' (142 species) includes additional records obtained from interviews, together with specimens previously collected in our study area by other investigators.
Fig. 88 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 88. Twelve Neotropical rainforest localities from which nonvolant mammal diversity data were compiled for this report. See footnotes to table 55 for geographic coordinates and references.
Fig. 84 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 84. Results of groundlevel (conventional) trapping with Victor rat traps and Sherman live traps at Paracou, where 124 identifiable captures of 16 species of marsupials and rodents were obtained with 5960 trapnights of effort using this equipment in 1991 and 1992. Note the abrupt change of slope for cumulative captures after about 2600 trapnights in the upper graph.
Fig. 83 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 83. Frequency histograms of body weights of nonvolant mammals (marsupials and rodents) taken at or near ground level by different trapping methods. Sample sizes (N) are recorded weights, which were not obtainable from all trapped individuals. ''Other traps'' includes captures made using Tomahawks, Conibears, and legholds (combined with Victor/Sherman captures in the first column of table 48).
Fig. 99 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 99. Percent primary consumers in the known mammal fauna at Paracou (excluding species recorded only from interviews or collections made by previous researchers) on each day of our inventory from 1991 to 1994. From initially high values early in our fieldwork, the proportion of the known fauna represented by primary consumers declined almost monotonically throughout the last half of our fieldwork to a final value of 39%.
Fig. 82 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 82. Results of conventional trapping for nonvolant mammals at Paracou, using all commercially available equipment (Victor rat traps, Sherman live traps, Tomahawks, Conibears, and legholds) at or near ground level (0–3 m above the ground). A total of 162 captures representing 18 species of marsupials and rodents were recorded from 1991 to 1994.
Fig. 87 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 87. Results of diurnal and nocturnal hunting/census at Paracou, where 16 species of nonvolant mammals were recorded by the former method and 31 species by the latter. In lieu of more appropriate measures of effort (see text), we simply plot species accumulation against field dates (202 total) for both methods.
Fig. 85 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 85. Results of arboreal platform trapping at Paracou, where 17 captures representing six species of marsupials and rodents were obtained with 2004 trapnights of effort in 1993.
Fig. 80 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 80. Dorsal, ventral, and lateral views of skulls of Proechimys cuvieri (left, AMNH 266592) and P. guyannensis (right, AMNH 266595). All views approximately Χ1.5.
Fig. 79 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 79. Caudal pelage of Proechimys cuvieri (left, AMNH 267029) and P. guyannensis (right, AMNH 267037). Tails of cuvieri are conspicuously hairier than those of guyannensis, an external difference that is useful for field identification of these sympatric congeners.
Fig. 77 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 77. Morphology of the incisive foramina and the posterior palate in Proechimys guyannensis (A, AMNH 266595) and P. cuvieri (B, AMNH 266592). Whereas the bony septum that separates the right and left incisive foramina is usually incomplete in P. guyannensis, the septum is always complete in P. cuvieri. Additionally, the incisive foramina of P. cuvieri are usually constricted posteriorly by welldeveloped lateral flanges of the maxillary bone, the posterior palate often has a prominent median keel, and the mesopterygoid fossa is typically broad and shallow. By contrast, the bony relief of the posterior palate is less prominent in most specimens of P. guyannensis, in which the mesopterygoid fossa is often narrower, more acutely angled, and penetrates farther between the toothrows. Scale bar = 5 mm.
Fig. 76 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 76. Frequency histogram of maxillary toothrow length (MTR) for all measured French Guianan specimens of Proechimys (N = 72; see text).
Fig. 78 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 78. Morphology of the floor of the infraorbital foramen in French Guianan Proechimys, illustrating alternative conditions of the canal for the infraorbital nerve scored as character states in table 46. A, Floor of infraorbital foramen smooth, without nerve canal (P. cuvieri [AMNH 266572] scored as ''1''); B, nerve canal present, defined
Fig. 81 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species
Fig. 81. Results of nonvolant mammal sampling at Paracou from 1991 to 1994, where we recorded a total of 50 species in 202 days using all direct methods of nonvolant faunal inventory (trapping, hunting/census, and miscellaneous; table 48). ''Minimum known diversity'' (64 species) includes the additional records obtained by previous researchers in our study area, together with secondhand observations that we documented by interviewing local residents.
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