Sources of Variation in Waterfowl Survival Rates

Krementz, David G.; Barker, Richard J.; Nichols, James D.

doi:10.2307/4089068

Cited by 43 publications

(23 citation statements)

References 40 publications

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“…In our study area, unsuccessful females were not more likely to change nesting areas in subsequent years, possibly because a generally high hatching success and high breeding density made such effects difficult to detect. The average annual survival rate estimated for female Goldeneyes was 0.830 (se = ±0.023), which is high compared with other duck species (Blums et al 1996, Krementz et al 1997a. One possible reason is that this population experiences no hunting pressure in Germany and only rarely migrates into countries with an open season for Common Goldeneye (e.g.…”

Section: Discussionmentioning

confidence: 86%

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Nesting area fidelity and survival of female Common Goldeneyes Bucephala clangula: are they density‐dependent?

Ludwichowski

Barker

Bräger³

2002

Ibis

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The breeding histories of 218 female Common Goldeneyes Bucephala clangula were recorded between 1971 and 2000 in a study area in Schleswig‐Holstein, northern Germany. Females were first recorded breeding at a median age of 2 years usually in their area of hatching (philopatry). One hundred and two of 140 females (73%) re‐nested only in one of the 13 nesting areas (clusters of nestboxes) for all their known life of up to 13 breeding seasons. The remaining 38 individuals moved between different nesting areas at least once between breeding attempts. The two oldest females were still breeding at a minimum age of 15 years (i.e. 13 years between first and last recorded breeding attempt). Temporal variations in annual survival rates of adult females could best be explained by a model with annual survival rate varying independently and randomly about a mean of 0.830 (se = ±0.023) with an estimated sd of ±0.092 (95% CI = 0.064, 0.138). No trend in the annual survival rate was detected over the study period of 30 years, although the presence of a moderate trend could not be ruled out. The absence of any discernible trend in survival at a time when the population size increased substantially indicates little, if any, density‐dependence in survival of female Goldeneyes during this study.

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Section: Discussionmentioning

confidence: 86%

“…The average annual survival rate estimated for female Goldeneyes was 0.830 (se = ±0.023), which is high compared with other duck species (Blums et al . 1996, Krementz et al . 1997a).…”

Section: Discussionmentioning

confidence: 99%

Nesting area fidelity and survival of female Common Goldeneyes Bucephala clangula: are they density‐dependent?

Ludwichowski

Barker

Bräger³

2002

Ibis

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“…We observed species-specific survival probabilities in both analyses. Krementz et al (1997) reported higher survival for female ducks in the tribe Mergini than ducks in the tribes Aythyini and Anatini, and also observed a positive relationship between annual survival probability and body mass among species. They suggested that body mass and tribe were related to differences in life-history strategies among the species in their analysis.…”

Section: Species-specific Variationmentioning

confidence: 84%

“…Our data did not span the range of species, body masses, or years considered by Krementz et al (1997), and we were unable to make extensive within-tribe comparisons. Perhaps the individuals in this study were influenced by regional and temporal patterns of hunting and nonhunting mortality or environmental conditions Table 3.…”

Section: Species-specific Variationmentioning

confidence: 99%

Survival of Ducks Banded in the Boreal Forest of Alaska

Lake

Walker

Lindberg

2006

Journal of Wildlife Management

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Limited information is available about the population dynamics of ducks in the boreal forest. We conducted an analysis of recovery data from 5 species of ducks banded in the boreal forest of Alaska, USA, during 1959–1966, and records of 3 species of ducks banded during 1989–2000, with the objective of examining sources of variation in survival and sampling probability and to complement recent studies of the breeding ecology of ducks in the boreal forest. Survival of ducks during 1959–1966 was species‐ and year‐specific. During 1989–2000, survival of northern pintail (Anas acuta) was age‐, sex‐, and year‐specific. Age‐class by sex interaction, without year‐specificity, however, best‐described survival of mallard (A. platyrhynchos) and green‐winged teal (A. crecca). Annual survival of male ducks from the Alaska boreal forest was generally similar to annual survival of the same species banded in the midcontinent. Survival probability of female ducks from the Alaska boreal forest, however, was generally higher than survival of female ducks from midcontinent regions. Sampling probability during 1989–2000 was lower for females than males, and increased after 1996, concurrent with the initiation of electronic band reporting. Our results suggest that patterns of duck survival differ between the boreal forest and the midcontinent, especially for after‐hatch‐year females. Regional variation in survival and reproduction and the factors affecting these parameters should continue to be monitored and considered in continental management plans.

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“…null) survival model and additive and interaction models incorporating year (YEAR), female age (AGE), and regression residuals of body mass at capture on the date of capture (MASS). We included AGE and MASS in the first step of model selection because these covariates often influence individual survival of waterfowl in winter (Conroy et al 1989, Krementz et al 1997. We also included YEAR in the first step because of the interaction that we found between body mass residuals and year.…”

Section: Discussionmentioning

confidence: 99%

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The Condor

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Sources of Variation in Waterfowl Survival Rates

Cited by 43 publications

References 40 publications

Nesting area fidelity and survival of female Common Goldeneyes Bucephala clangula: are they density‐dependent?

Nesting area fidelity and survival of female Common Goldeneyes Bucephala clangula: are they density‐dependent?

Survival of Ducks Banded in the Boreal Forest of Alaska

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