| Abstract: | We measured productivity of the Spruce Grouse (Dendragapusc anadensicsa nadensis) in patchy black spruce (Picea mariana) habitat along the southeastern limit of its range in mid-coastal Maine. We captured grouse and attached necklace-mounted radio transmitters to hens prior to nesting. Of 19 females monitored, only 26% raised chicks to the late brood-rearing period. Predation was high on hens (37%) and five were killed before hatching eggs. Six (55%) entire broods were lost and only 30% of chicks survived to late summer. Production ( No. of chicks/female), an index of productivity, was < 1 and lower in Maine and Minnesota study areas in black spruce than areas dominated by jack pine (Pinus banksiana) or a mixture of jack pine and spruce with dense undergrowth. Where Spruce Grouse breed in patchy black spruce communities, immigration from neighboring populations or inter-patch movement by local individuals may be required to maintain viable populations. |
| Genre: | Article |
| ProdID: | 5223415 |
| Citation Author: | Whitcomb, S.D.; O'Connell, A.F., Jr.; Servello, F.A. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 427 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Field Ornithology |
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| Citation Number Of Pages: | 6 |
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| Citation Phsyical Description: | 422-427 |
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| Citation Search Results Text: | Productivity of the spruce grouse in fragmented habitat at the edge of its range; 1996; Article; Journal; Journal of Field Ornithology; Whitcomb, S.D.; O‘Connell, A.F., Jr.; Servello, F.A. |
| Citation Start Page: | 422 |
| Citation Volume: | 67 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | Productivity of the spruce grouse in fragmented habitat at the edge of its range; 1996; Article; Journal; Journal of Field Ornithology; Whitcomb, S.D.; O‘Connell, A.F., Jr.; Servello, F.A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://elibrary.unm.edu/sora/JFO/v067n03/p0422-p0427.pdf |
| Date Other: | Wed, 16 Jun 2010 12:17 -0500 |
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