. Sondaggi per i pascoli uccelli del Malta Field Office-BLM, compreso un periodo di sette anni di studio nel nord della contea di Valle . Gli uccelli; popolazioni di uccelli; popolazioni di uccelli; popolazioni di uccelli; praterie; uccelli rari; indagini di habitat. Figura B3. Giugno 2007 Vegetazione su tre punti di conteggio (117.1, 228.3, 343.3) nel nord della contea di Phillips. Durante 2001-2007 nel nord della contea di Valle, Sprague's Pipit Ed Baird il passero che tendeva ad occupare siti con significativamente più alti (Kruskal-Wallis ANOVA I confronti accoppiati, P < 0,05) prati vegetazione (40,8 ± 9,2 cm e 43,7 ± 9,8 cm, rispettivamente), di McCown's Longspur (37.

• Collaboratore: Library Book Collection / Alamy Foto Stock
• ID dell’immagine: RJM8XH
• Dimensioni dei file: 7,1 MB (444,8 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 3185 x 784 px | 27 x 6,6 cm | 10,6 x 2,6 inches | 300dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

. Surveys for grassland birds of the Malta Field Office-BLM, including a seven-year study in north Valley County . Birds; Bird populations; Bird populations; Bird populations; Grasslands; Rare birds; Habitat surveys. Figure B3. June 2007 vegetation on three count points (117.1, 228.3, 343.3) in north Phillips County. During 2001-2007 in north Valley County, Sprague's Pipit and Baird's Sparrow tended to occupy sites with significantly taller (Kruskal-Wallis ANOVA pair-wise comparisons, P < 0.05) grassland vegetation (40.8 ± 9.2 cm and 43.7 ± 9.8 cm, respectively), than McCown's Longspur (37.4 ± 8.2 cm), which is also consistent with their patterns in distribution across the northeastern Montana landscape. Lark Bunting, another species occurring on a greater percentage of point counts in Valley County, also tended to occur on points where grassland vegetation was significantly (P < 0.05) taller (41.2 ± 10.9 cm) than those occu- pied by McCown's Longspur during 2001-2007, but it is sometimes nomadic, and greater numbers in Val- ley County could as well be a function of spatial location relative to over-wintering areas. Assuming the tendencies in vegetation structure associations we saw by the respective species in north Valley County apply across all three counties, then that further supports the suggestion that spatial differences in relative abundance of SOC birds is tied to vegetation structure. Discussion BLM lands in northern Blaine and Phillips counties continue to support a diversity of breeding birds, including most or all of those we detected every year of our study to the east in north Valley County. Bobolink was the only SOC bird present in Valley County every year but not detected on our Blaine and Phillips counties points in 2007. However, even in Valley County Bobolink occurred on very few points (no more than 5.3% in seven years of survey), so we may have missed them if it was limited to just a few sites with taller and denser vegetation, which

Parole chiave associate all'immagine

• bookcollectionamericana
• booksubjectbirds
• booksubjectrarebirds