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Research at St Andrews

Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus).

Research output: Chapter in Book/Report/Conference proceedingChapter

Standard

Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus). / Smout, Sophie Caroline; King, Ruth; Pomeroy, Patrick.

Report for the Special Committee on Seals. 2014. p. 134-143.

Research output: Chapter in Book/Report/Conference proceedingChapter

Harvard

Smout, SC, King, R & Pomeroy, P 2014, Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus). in Report for the Special Committee on Seals. pp. 134-143.

APA

Smout, S. C., King, R., & Pomeroy, P. (2014). Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus). In Report for the Special Committee on Seals (pp. 134-143)

Vancouver

Smout SC, King R, Pomeroy P. Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus). In Report for the Special Committee on Seals. 2014. p. 134-143

Author

Smout, Sophie Caroline ; King, Ruth ; Pomeroy, Patrick. / Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus). Report for the Special Committee on Seals. 2014. pp. 134-143

Bibtex - Download

@inbook{572f361b0cfc44638e582fe97d0b8077,
title = "Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus).",
abstract = "We present the results of a hidden process model fitted to long-term observational data from mark- recapture studies at grey seal breeding colonies on the Isle of May (IM) and North Rona (NR). We assume that mass changes between years are dependent on environmental factors and on the breeding status of animals, and explore the influence of an individual’s mass on apparent survival, and fecundity. There was general annual variation in mass gain, especially at IM, presumably due to fluctuating resource availability. We find that females whose mass is low are less likely to breed, but that there is no strong evidence for a similar effect on survival. We are also able to arrive at general estimates of fecundity for females using each of these 2 colonies, including years in which they are not observed to attend the breeding colony. Overall fecundity estimates were different at the two colonies (0.770 NR, 0.860 IM).",
author = "Smout, {Sophie Caroline} and Ruth King and Patrick Pomeroy",
year = "2014",
language = "English",
pages = "134--143",
booktitle = "Report for the Special Committee on Seals",

}

RIS (suitable for import to EndNote) - Download

TY - CHAP

T1 - Colony specific implications of individual mass changes for survival and fecundity in female grey seals (Halichoerus grypus).

AU - Smout, Sophie Caroline

AU - King, Ruth

AU - Pomeroy, Patrick

PY - 2014

Y1 - 2014

N2 - We present the results of a hidden process model fitted to long-term observational data from mark- recapture studies at grey seal breeding colonies on the Isle of May (IM) and North Rona (NR). We assume that mass changes between years are dependent on environmental factors and on the breeding status of animals, and explore the influence of an individual’s mass on apparent survival, and fecundity. There was general annual variation in mass gain, especially at IM, presumably due to fluctuating resource availability. We find that females whose mass is low are less likely to breed, but that there is no strong evidence for a similar effect on survival. We are also able to arrive at general estimates of fecundity for females using each of these 2 colonies, including years in which they are not observed to attend the breeding colony. Overall fecundity estimates were different at the two colonies (0.770 NR, 0.860 IM).

AB - We present the results of a hidden process model fitted to long-term observational data from mark- recapture studies at grey seal breeding colonies on the Isle of May (IM) and North Rona (NR). We assume that mass changes between years are dependent on environmental factors and on the breeding status of animals, and explore the influence of an individual’s mass on apparent survival, and fecundity. There was general annual variation in mass gain, especially at IM, presumably due to fluctuating resource availability. We find that females whose mass is low are less likely to breed, but that there is no strong evidence for a similar effect on survival. We are also able to arrive at general estimates of fecundity for females using each of these 2 colonies, including years in which they are not observed to attend the breeding colony. Overall fecundity estimates were different at the two colonies (0.770 NR, 0.860 IM).

UR - http://www.smru.st-and.ac.uk/documents/2259.pdf

M3 - Chapter

SP - 134

EP - 143

BT - Report for the Special Committee on Seals

ER -

Related by author

  1. Harbour Seal Decline - vital rates and drivers: Report to Scottish Government MMSS/002/15

    Arso Civil, M., Smout, S. C., Duck, C. D., Morris, C., Onoufriou, J., Thompson, D., Brownlow, A., Davison, N., Cummings, C., Pomeroy, P., McConnell, B. J. & Hall, A. J., Jun 2016, SMRU. 63 p.

    Research output: Book/ReportCommissioned report

  2. Low and delayed recruitment at grey seal breeding colonies in the UK

    Pomeroy, P., Smout, S. C., Twiss, S., Moss, S. & King, R., 2010, In : Journal of the NorthWest Fisheries Association. 42, p. 125-133

    Research output: Contribution to journalArticle

ID: 194194900