2010
DOI: 10.1007/s13280-010-0091-7
|View full text |Cite
|
Sign up to set email alerts
|

Detecting Density Dependence in Recovering Seal Populations

Abstract: Time series of abundance estimates are commonly used for analyses of population trends and possible shifts in growth rate. We investigate if trends in age composition can be used as an alternative to abundance estimates for detection of decelerated population growth. Both methods were tested under two forms of density dependence and different levels of environmental variation in simulated time series of growth in Baltic gray seals. Under logistic growth, decelerating growth could be statistically confirmed aft… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3

Citation Types

2
12
1

Year Published

2011
2011
2024
2024

Publication Types

Select...
4
2

Relationship

1
5

Authors

Journals

citations
Cited by 16 publications
(15 citation statements)
references
References 47 publications
2
12
1
Order By: Relevance
“…Survival rates of the adults in our study (0.87-0.92 in 4-15-year-old individuals) fall into the range found earlier for the Baltic grey seal (Harding et al 2007, Svensson et al 2011, and for other seal populations (e.g. Harwood & Prime 1978, Smith 1987, Wickens & York 1997, Schwartz & Stobo 2000.…”
Section: Other Sources Of Mortalitysupporting
confidence: 82%
See 2 more Smart Citations
“…Survival rates of the adults in our study (0.87-0.92 in 4-15-year-old individuals) fall into the range found earlier for the Baltic grey seal (Harding et al 2007, Svensson et al 2011, and for other seal populations (e.g. Harwood & Prime 1978, Smith 1987, Wickens & York 1997, Schwartz & Stobo 2000.…”
Section: Other Sources Of Mortalitysupporting
confidence: 82%
“…The survival rate of pups during their first year of life (0.53 for males and 0.55 for females) in 2005-2009 was a little lower as compared with the value (0.62 for females) given for British grey seals by Hall et al (2001), and 0.70 given for Baltic grey seals without density dependence (Svensson et al 2011), whereas the survival rate of female pups in 2000-2004 (0.76) was higher than that of British seals. Survival rates of the adults in our study (0.87-0.92 in 4-15-year-old individuals) fall into the range found earlier for the Baltic grey seal (Harding et al 2007, Svensson et al 2011, and for other seal populations (e.g.…”
Section: Other Sources Of Mortalitycontrasting
confidence: 51%
See 1 more Smart Citation
“…The initial periods were the intuitively obvious ones: late on in the growth of the population while it was decelerating towards the carrying capacity. The others seem to be associated with an overcompensatory response in the model (Svensson et al 2011, Fig. 2b), a feature those authors noted.…”
supporting
confidence: 60%
“…
A recent simulation study (Svensson et al 2011) proposed the use of changes in age-structure as an indicator of density dependent effects on the growth of the Baltic grey seal (Halichoerus grypus) population. That approach provides a clever alternative to the direct examination of abundance estimates, and sidesteps the well-known difficulty of detecting trends in marine mammal populations from survey data (Taylor et al 2007).
…”
mentioning
confidence: 99%