Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator
Deciphering the causes of variation in reproductive success is a fundamental issue in ecology, as the number of offspring produced is an important driver of individual fitness and population dynamics. Little is known however, about how different factors interact to drive variation in reproduction, s...
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Online Access: | https://doi.org/10.5061/dryad.6n579 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::c17680ef3b99a871f7b583c27cde4cd3 2023-05-15T13:00:54+02:00 Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator Hoy, Sarah R Millon, Alexandre Petty, Steve J Whitfield, D Philip Lambin, Xavier Hoy, Sarah R. Petty, Steve J. 2017-01-01 https://doi.org/10.5061/dryad.6n579 undefined unknown http://dx.doi.org/10.5061/dryad.6n579 https://dx.doi.org/10.5061/dryad.6n579 lic_creative-commons oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:92946 10.5061/dryad.6n579 oai:easy.dans.knaw.nl:easy-dataset:92946 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care tawny owl reproductive strategies predation risk Strix aluco breeding decisions breeding propensity juvenile survival Accipiter gentilis northern goshawk life-history trade-offs envir demo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.6n579 2023-01-22T16:51:48Z Deciphering the causes of variation in reproductive success is a fundamental issue in ecology, as the number of offspring produced is an important driver of individual fitness and population dynamics. Little is known however, about how different factors interact to drive variation in reproduction, such as whether an individual's response to extrinsic conditions (e.g. food availability or predation) varies according to its intrinsic attributes (e.g. age, previous allocation of resources towards reproduction). We used 29 years of reproductive data from marked female tawny owls and natural variation in food availability (field vole) and predator abundance (northern goshawk) to quantify the extent to which extrinsic and intrinsic factors interact to influence owl reproductive traits (breeding propensity, clutch size and nest abandonment). Extrinsic and intrinsic factors appeared to interact to affect breeding propensity (which accounted for 83% of the variation in owl reproductive success). Breeding propensity increased with vole density, although increasing goshawk abundance reduced the strength of this relationship. Owls became slightly more likely to breed as they aged, although this was only apparent for individuals who had fledged chicks the year before. Owls laid larger clutches when food was more abundant. When owls were breeding in territories less exposed to goshawk predation, 99.5% of all breeding attempts reached the fledging stage. In contrast, the probability of breeding attempts reaching the fledging stage in territories more exposed to goshawk predation depended on the amount of resources an owl had already allocated towards reproduction (averaging 87.7% for owls with clutches of 1-2 eggs compared to 97.5% for owls with clutches of 4-6 eggs). Overall, our results suggested that changes in extrinsic conditions (predominantly food availability, but also predator abundance) had the greatest influence on owl reproduction. In response to deteriorating extrinsic conditions (fewer voles and more goshawks) ... Dataset Accipiter gentilis Northern Goshawk Unknown |
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Open Polar |
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unknown |
topic |
Life sciences medicine and health care tawny owl reproductive strategies predation risk Strix aluco breeding decisions breeding propensity juvenile survival Accipiter gentilis northern goshawk life-history trade-offs envir demo |
spellingShingle |
Life sciences medicine and health care tawny owl reproductive strategies predation risk Strix aluco breeding decisions breeding propensity juvenile survival Accipiter gentilis northern goshawk life-history trade-offs envir demo Hoy, Sarah R Millon, Alexandre Petty, Steve J Whitfield, D Philip Lambin, Xavier Hoy, Sarah R. Petty, Steve J. Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
topic_facet |
Life sciences medicine and health care tawny owl reproductive strategies predation risk Strix aluco breeding decisions breeding propensity juvenile survival Accipiter gentilis northern goshawk life-history trade-offs envir demo |
description |
Deciphering the causes of variation in reproductive success is a fundamental issue in ecology, as the number of offspring produced is an important driver of individual fitness and population dynamics. Little is known however, about how different factors interact to drive variation in reproduction, such as whether an individual's response to extrinsic conditions (e.g. food availability or predation) varies according to its intrinsic attributes (e.g. age, previous allocation of resources towards reproduction). We used 29 years of reproductive data from marked female tawny owls and natural variation in food availability (field vole) and predator abundance (northern goshawk) to quantify the extent to which extrinsic and intrinsic factors interact to influence owl reproductive traits (breeding propensity, clutch size and nest abandonment). Extrinsic and intrinsic factors appeared to interact to affect breeding propensity (which accounted for 83% of the variation in owl reproductive success). Breeding propensity increased with vole density, although increasing goshawk abundance reduced the strength of this relationship. Owls became slightly more likely to breed as they aged, although this was only apparent for individuals who had fledged chicks the year before. Owls laid larger clutches when food was more abundant. When owls were breeding in territories less exposed to goshawk predation, 99.5% of all breeding attempts reached the fledging stage. In contrast, the probability of breeding attempts reaching the fledging stage in territories more exposed to goshawk predation depended on the amount of resources an owl had already allocated towards reproduction (averaging 87.7% for owls with clutches of 1-2 eggs compared to 97.5% for owls with clutches of 4-6 eggs). Overall, our results suggested that changes in extrinsic conditions (predominantly food availability, but also predator abundance) had the greatest influence on owl reproduction. In response to deteriorating extrinsic conditions (fewer voles and more goshawks) ... |
format |
Dataset |
author |
Hoy, Sarah R Millon, Alexandre Petty, Steve J Whitfield, D Philip Lambin, Xavier Hoy, Sarah R. Petty, Steve J. |
author_facet |
Hoy, Sarah R Millon, Alexandre Petty, Steve J Whitfield, D Philip Lambin, Xavier Hoy, Sarah R. Petty, Steve J. |
author_sort |
Hoy, Sarah R |
title |
Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
title_short |
Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
title_full |
Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
title_fullStr |
Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
title_full_unstemmed |
Data from: Food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
title_sort |
data from: food availability and predation risk, rather than intrinsic attributes are the main factors shaping the reproductive decisions of a long-lived predator |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.6n579 |
genre |
Accipiter gentilis Northern Goshawk |
genre_facet |
Accipiter gentilis Northern Goshawk |
op_source |
oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:92946 10.5061/dryad.6n579 oai:easy.dans.knaw.nl:easy-dataset:92946 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.6n579 https://dx.doi.org/10.5061/dryad.6n579 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.6n579 |
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1766263553167196160 |