Výsledky vyhledávání - "Nora N. Hanson"

Colony‐specific differences in decadal longitudinal body composition of a capital‐breeding marine top predator

Autor: Sophie Smout, Patrick Pomeroy, Simon Moss, Nora N. Hanson

Publikováno v: Aquatic Conservation: Marine and Freshwater Ecosystems. 29:131-143

he long‐term studies included in this paper were funded by the Natural Environment Research Council through the grant ‘SMRU Long‐term measurement of marine mammal population structure, dynamics and trophic interactions’, grant reference SMRU1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33e3a26eabd78dc4fd157688f96b8575
https://doi.org/10.1002/aqc.3093

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Variation in the post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean

Autor: Christopher D, Todd, Nora N, Hanson, Lars, Boehme, Crawford W, Revie, Ana R, Marques

Publikováno v: Journal of fish biologyREFERENCES. 98(1)

Variation in circulus spacing on the scales of wild Atlantic salmon is indicative of changes in body length growth rate. We analyzed scale circulus spacing during the post-smolt growth period for adult one sea-winter salmon (n = 1947) returning to Sc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::a361628631a486c2532e6728126b9fdc
https://pubmed.ncbi.nlm.nih.gov/32951198

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Harbour seal (Phoca vitulina) abundance within the Firth of Tay and Eden Estuary, Scotland: recent trends and extrapolation to extinction

Autor: Dave Thompson, Callan Duck, Mike Lonergan, John M. Baxter, Nora N. Hanson

Publikováno v: Aquatic Conservation: Marine and Freshwater Ecosystems. 27:268-281

Aerial surveys have detected alarming declines in counts of harbour seals in several regions across Scotland. Demographic data and simple models were used to examine the recent decline in the numbers of harbour seals counted in one population within

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee10f36a365f088532d536ecd9203b31
https://doi.org/10.1002/aqc.2609

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Precision and accuracy of Dahl-Lea back-calculated smolt lengths from adult scales of Atlantic salmon Salmo salar

Autor: Stewart J Middlemas, Gordon W. Smith, Chris Todd, Nora N. Hanson

Publikováno v: Journal of fish biology. 94(1)

Using tagged and recaptured Atlantic salmon Salmo salar (n = 106) the present analysis shows that the most commonly applied linear back-calculation method for estimating past length, the Dahl-Lea method, resulted in overestimation of the length of la

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53bdbf6779b22d5403890631131f6748
https://pubmed.ncbi.nlm.nih.gov/30443940

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A simple method of dating marine growth circuli on scales of wild one sea-winter and two sea-winter Atlantic salmon (Salmo salar)

Autor: Nora N. Hanson, Mike Lonergan, Julian C. MacLean, Crawford W. Revie, Chris Todd, B. D. M. Whyte

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 71:645-655

A method of dating the marine growth circuli on Atlantic salmon (Salmo salar L.) scales is presented. Data were available for 54 salmon, intercepted as smolts at the completion of their downstream migration in the River North Esk, Scotland. Smolts we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d5e3692c7daf48f75514b11818e02ef
https://doi.org/10.1139/cjfas-2013-0359

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Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths

Autor: Eimf, Christopher M. Wurster, Chris Todd, Nora N. Hanson

Publikováno v: Hanson, N N, Wurster, C M & Todd, C D 2013, ' Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths ', Marine Ecology Progress Series, vol. 475, pp. 249-266 . https://doi.org/10.3354/meps10066

Long-term declines in abundance of wild Atlantic salmon Salmo salar, L. have been linked to reductions in marine survivorship, and recent reductions in growth condition (a measure of fish quality) have been correlated to increased mid-winter sea-surf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4c1d7eb3e251aeff55d1b4b30d916f6
https://doi.org/10.3354/meps10066

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Getting Long in the Tooth: A Strong Positive Correlation between Canine Size and Heterozygosity in Antarctic Fur Seals Arctocephalus gazella

Autor: Nora N. Hanson, Joseph I. Hoffman, William Amos, Jaume Forcada, Phil Trathan

Publikováno v: Journal of Heredity. 101:527-538

Most studies of heterozygosity-fitness correlations (HFCs) in natural populations relate to fitness traits expressed early in life, whereas traits that are often more difficult to measure such as longevity and adult body size remain elusive. Teeth pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d100842bf128e8bb6a88d1fb77d796c
https://doi.org/10.1093/jhered/esq045

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Intrinsic and extrinsic forcing in life histories: patterns of growth and stable isotopes in male Antarctic fur seal teeth

Autor: Ian L. Boyd, Michael I. Bird, Christopher M. Wurster, Keith Reid, Nora N. Hanson

Publikováno v: Marine Ecology Progress Series. 388:263-272

Life-time records of the trophic sources of carbon, nitrogen and of growth rate can be generated from biogenic structures that show accretionary growth, including fish scales, whale baleen and the teeth of some animals. Records generated from individ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e7ef2ec2a10e8a2469d4ca87926e08d
https://doi.org/10.3354/meps08158

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