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18 results for “Branta canadensis”
Figure 13 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 13. Histology underlying grossly smooth surface textures in transverse section. A, single-layered fibrolamellar cortex (DMNH 83592, tibiotarsus section c). B, three-layered cortex with a central fibrolamellar core and endosteal and periosteal lamellar bone (DMNH 83591, femur section e). M, medullary cavity; P, osteogenic layer of periosteum. Scale bars: A = 50 µm; B = 92 µm.
Figure 6. A in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 6. A, very faint transverse wrinkles, indicated by arrows (DMNH 82228, tibiotarsus). B, a more prominent transverse wrinkled texture pattern (DMNH 82910, femur). C, scattered pores, examples indicated by arrows, on an otherwise nonporous surface (DMNH 82729, femur). D, rugose texture (DMNH 82944, femur). E, areas of rugose texture on an otherwise smooth surface (DMNH 80847, humerus). Scale bars = 1 cm.
Figure 5 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 5. Examples of striated, fibrous, and porous texture patterns. A, longitudinal striations with (top) and without (bottom) transverse struts (DMNH 83589, tibiotarsus). B, fibrous texture (DMNH 78603, humerus). C, shorter-grained fibrous texture, intermediate between (B) and (D) (DMNH 82727, humerus). D, dotted pattern of porous texture (DMNH 82727, femur). E, rough grainy texture lacking distinct individual pores (DMNH 82247, femur). Scale bars = 1 cm.
Figure 12. Juvenile bone DMNH 83585 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 12. Juvenile bone DMNH 83585 in longitudinal section. A, longitudinal to slightly oblique channels intersecting the bone surface (arrows) in the distal region of the shaft (tibiotarsus region d). B, oblique channels intersecting the bone surface (arrows) just proximal to the midshaft region (tibiotarsus region b). C, irregular channels in the midshaft region (tibiotarsus region c). M, medullary cavity; P, periosteum. Scale bars = 92 µm.
Figure 7 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 7. Examples of nonpenetrating longitudinal and smooth texture patterns. A, shallow longitudinal grooves (DMNH 82732, humerus). B, shallow surface dimples (DMNH 82730, femur). C, generally smooth texture with extremely faint longitudinal grooves (DMNH 82730, tibiotarsus). D, completely smooth surface (DMNH 82730, humerus). Scale bars = 1 cm.
Figure 3 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 3. Results of the cluster analyses of bone landmark characters. The distance metric is normalized percent disagreement. Complete linkage method (farthest neighbour). All specimen designations are DMNH catalogue numbers. The numbers in parentheses represent ontogenetic stages. Femur: DMNH 78500 differs from 'All Others' only in the lack of character 10 (medial scar for M. flexor perforati II and IV). Tibiotarsus: DMNH 83058 differs from 'All Others' only in the lack of character 13 (peroneal sulcus). Humerus: DMNH 78603 differs from 'All Others' only in the lack of character 12 (bicipital crest).
Figure 14 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 14. Irregular resorptive surface with large erosion bays lined by numerous osteoclasts (arrows), seen in transverse section (DMNH 83592, tibiotarsus section a). P, periosteum. Scale bar = 92 µm.
Figure 1 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 1. Locations of thin sections used in the autocontrol study. A, femur; B, tibiotarsus. Labelled lines indicate the positions of transverse sections. Longitudinal sections are designated based on the transverse lines they intersect.
Figure 11 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 11. Transverse sections of immature long bones. A, single-layered fibrolamellar cortex (DMNH 83586, femur section c). B, active incorporation of channels at the surface of the fibrolamellar cortex (DMNH 83586, tibiotarsus section c). C, stratified fibrolamellar cortex (DMNH 83586, tibiotarsus section c). D, circularly orientated oblique channels in outer regions of fibrolamellar cortex (DMNH 83589, femur section d). B, blood vessel with erythrocytes; L, lymphatic vessel; M, medullary cavity; P, osteogenic layer of periosteum. The space within P is a preparation artefact. Scale bars: A, D = 230 µm; B = 50 µm; C = 92 µm.
Figure 4 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 4. Relationships between the percentage adult size based on element length and the percentage maturity based on parsimony and cluster analyses.
Figure 9 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 9. Relationships between texture type and parsimony-based and cluster-based percentage maturity indices. The circle diameter is proportional to the number of specimens.
Branta canadensis (Anatidae) - whole organism
Image of Branta canadensis (Anatidae) - whole organism
Branta canadensis (Anatidae) - whole organism
Image of Branta canadensis (Anatidae) - whole organism
Figure 10 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 10. The relationship between texture type and date of death.
Figure 8 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 8. Relationships between texture type and bone length and percentage adult size.
Shortgrass Steppe site, station USGS Breeding Bird Survey Route 17305, Nunn, CO, study of animal abundance of Branta canadensis in units of numberPerSightingEffort on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Shortgrass Steppe (SGS) contains animal abundance of Branta canadensis measurements in numberPerSightingEffort units and were aggregated to a yearly timescale.
Branta canadensis (Anatidae) - whole organism
Image of Branta canadensis (Anatidae) - whole organism
Figure 2 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 2. Strict consensus trees resulting from parsimony analyses. Numbered ontogenetic stages are defined in Table 4. Femur: strict consensus of four trees, tree length = 28, consistency index = 0.7500. Tibiotarsus: strict consensus of 40 trees, tree length = 31, consistency index = 0.6452. Humerus: strict consensus of six trees, tree length = 19, consistency index = 0.8333.
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