Survival of dusky Canada goose goslings in relation to weather and annual nest success

Thomas F. Fondell, David Andrew Miller, James B. Grand, R. Michael Anthony

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The dusky Canada goose (Branta canadensis occidentalis) population has been in long-term decline, likely due to reduced breeding productivity, but gosling survival of this population had not been examined. We studied gosling survival in broods of radiomarked adult females on the western Copper River Delta, Alaska, USA, during 1997-1999 and 2001-2003. Survival estimates for dusky Canada goose goslings to 45 days (x- = 0.32) were below estimates from most previous studies of geese. Daily survival of goslings increased with age and decreased with date of hatch. Precipitation during the first 3 days post-hatch was negatively related to gosling survival and this effect increased with date. Annual estimates of gosling survival were positively correlated with annual estimates of nest success, suggesting overlap in factors affecting nest and gosling survival. Nest success probably also directly affected gosling survival, because survival decreased with hatch date and more broods hatched from renests during years with low nest success. Gosling survival appears to play an important role in limiting current productivity of this population. Management directed at increasing nest success would likely also improve gosling survival. We recommend additional research directed at examining sources of gosling mortality and the link between nest success and gosling survival.

Original languageEnglish (US)
Pages (from-to)1614-1621
Number of pages8
JournalJournal of Wildlife Management
Volume72
Issue number7
DOIs
StatePublished - Sep 1 2008

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goslings
Branta canadensis
nest
weather
nests
productivity
geese

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Nature and Landscape Conservation

Cite this

Fondell, Thomas F. ; Miller, David Andrew ; Grand, James B. ; Michael Anthony, R. / Survival of dusky Canada goose goslings in relation to weather and annual nest success. In: Journal of Wildlife Management. 2008 ; Vol. 72, No. 7. pp. 1614-1621.
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abstract = "The dusky Canada goose (Branta canadensis occidentalis) population has been in long-term decline, likely due to reduced breeding productivity, but gosling survival of this population had not been examined. We studied gosling survival in broods of radiomarked adult females on the western Copper River Delta, Alaska, USA, during 1997-1999 and 2001-2003. Survival estimates for dusky Canada goose goslings to 45 days (x- = 0.32) were below estimates from most previous studies of geese. Daily survival of goslings increased with age and decreased with date of hatch. Precipitation during the first 3 days post-hatch was negatively related to gosling survival and this effect increased with date. Annual estimates of gosling survival were positively correlated with annual estimates of nest success, suggesting overlap in factors affecting nest and gosling survival. Nest success probably also directly affected gosling survival, because survival decreased with hatch date and more broods hatched from renests during years with low nest success. Gosling survival appears to play an important role in limiting current productivity of this population. Management directed at increasing nest success would likely also improve gosling survival. We recommend additional research directed at examining sources of gosling mortality and the link between nest success and gosling survival.",
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Survival of dusky Canada goose goslings in relation to weather and annual nest success. / Fondell, Thomas F.; Miller, David Andrew; Grand, James B.; Michael Anthony, R.

In: Journal of Wildlife Management, Vol. 72, No. 7, 01.09.2008, p. 1614-1621.

Research output: Contribution to journalArticle

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