Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Records 1 - 18 / 18

  • help
  • print

    Print search results

  • export

    Export search results

  • alert
    We will mail you new results for this query: q=Creuwels
Check title to add to marked list
Chick provisioning strategies in Antarctic petrels and Southern fulmars
Creuwels, J.C.S. ; Franeker, J.A. van - \ 2016
In: Programme & abstract book 6th International Albatross and Petrel Conference. - - p. 80 - 80.
Foraging strategies of Antarctic Fulmarine petrels
Creuwels, J.C.S. ; Engelhard, G.A. ; Franeker, J.A. van; Veer, W. van der; Hasperhoven, J.G. ; Ruiterman, W. - \ 2010
Marine Ornithology 38 (2010)1. - ISSN 1018-3337 - p. 17 - 22.
During breeding, procellariiform seabirds are typical central-place foragers, depending on distant pelagic resources. Especially in polar environments, where there is only a short time window to complete the breeding season, high chick provisioning rates are needed to allow chicks to fledge successfully. The duration of the chick period and of chick growth are linked to provisioning parameters such as the frequency and quantity of the chick meals, but probably also to the quality of the food delivered. We studied the provisioning and growth of chicks of Southern Fulmars Fulmarus glacialoides and Antarctic Petrels Thalassoica antarctica on Ardery Island (66°S, 110°E) near the Australian Antarctic station Casey. During two seasons (1998, 1999) we deployed artificial nests to collect data on chick provisioning. Southern Fulmars delivered meals more frequently (one per 14 hours) than did Antarctic Petrels (one every 25-26 hours). In 1998, the mass of meals brought to chicks of both species was not significantly different and averaged around 128 g. In 1999, the meal mass of Southern Fulmars remained the same, but that of the Antarctic Petrel was 28 g heavier. Chick provisioning rates calculated from meal frequencies and masses were significantly different between Southern Fulmars (254 g/d) and Antarctic Petrels (151 g/d), even after correction for body size. Because growth rates for the two species were not significantly different we suggest that Antarctic Petrels deliver meals of higher nutritional value, probably related to food reaching a higher density in the parents’ stomach during their longer foraging trips.
Breeding strategies of Antarctic Petrels Thalassoica antarctica and Southern Fulmars Fulmarus glacialoides in the high Antarctic and implications for reproductive success
Creuwels, J.C.S. ; Franeker, J.A. van; Doust, S.J. ; Beinssen, A. ; Harding, B. ; Hentschel, O. - \ 2008
Ibis 150 (2008)1. - ISSN 0019-1019 - p. 160 - 171.
windmill islands - ice conditions - snow - procellariidae - incubation - abundance - survival - seabirds - growth - ardery
Breeding strategies of two closely related fulmarine petrels were studied on Ardery Island, on the continental coast of East Antarctica, where short summers are expected to narrow the time-window for reproduction. Both species had a similar breeding period (97 days from laying to fledging) but Antarctic Petrels Thalassoica antarctica bred up to 16 days earlier than Southern Fulmars. During the pre-laying exodus, all Antarctic Petrels deserted the colony, whereas some Southern Fulmars Fulmarus glacialoides remained. Antarctic Petrels exhibited stronger synchronization in breeding, made longer foraging trips and spent less time guarding their chicks than Southern Fulmars. Overall breeding success of both species was similar but failures of Antarctic Petrels were concentrated in the early egg-phase and after hatching, when parents ceased guarding. Southern Fulmars lost eggs and chicks later in the breeding cycle and so wasted more parental investment in failed breeding attempts. Different breeding strategies may be imposed by flight characteristics; Southern Fulmars are less capable of crossing large expanses of pack ice and need to delay breeding until the sea ice retreats and breaks up. However, due to the short summer they risk chick failure when weather conditions deteriorate late in the season.
Food for thought
Creuwels, J.C.S. ; Franeker, J.A. van - \ 2007
fulmarus - procellariidae - voeding - vogels - nutrition - birds
Beknopte informatie over het broedgedrag en voedering van Antarctische- (Thalassoica antarctica) en grijze stormvogels (Fulmares glacialoides)
Distribution and abundance of the Southern Fulmar Fulmarus glacialoides
Creuwels, J.C.S. ; Poncet, S. ; Hodum, P.J. ; Franeker, J.A. van - \ 2007
Polar Biology 30 (2007)9. - ISSN 0722-4060 - p. 1083 - 1097.
antarctic seabirds - prydz bay - breeding seabirds - windmill islands - petrels - adelie - birds - populations - albatrosses - fisheries
We reviewed published and unpublished literature to establish the status of the breeding distribution and abundance of Southern Fulmars Fulmarus glacialoides. The species breeds widely throughout the Antarctic and on peri-Antarctic islands. From breeding population data collated from 73 of these localities, we estimated the minimum global population to be about 400,000 breeding pairs. After adjusting for seasonal variation in numbers of breeding pairs based on studies at Ardery Island, East Antarctica, the total global population is estimated to be at least one million breeding pairs. Of this, 72% nest on islands of the Scotia Sea arc and the South Atlantic Ocean. The precision of the estimate on the total number of breeding pairs is low, as several colony estimates were only available as orders of magnitude. Furthermore, different timing of the surveys and the difficulties of censusing colonial cliff-nesting birds reduced the count accuracy. Currently, there are no known threats to the global population, although the effects of fishery activities are not fully known.
Variations of snow petrel breeding success in relation to sea-ice extent: detecting local response to large-scale processes?
Olivier, F. ; Franeker, J.A. van; Creuwels, J.C.S. ; Woehler, E.J. - \ 2005
Polar Biology 28 (2005). - ISSN 0722-4060 - p. 687 - 699.
antarctic penguin populations - nino-southern-oscillation - pagodroma-nivea - surface temperature - thalassoica-antarctica - reproductive success - environmental-change - circumpolar wave - body condition - top predator
Demographic parameters were estimated for snow petrels Pagodroma nivea nesting at the study colony of Reeve Hill near Casey station, Antarctica between 1984 and 2003. Average breeding success for the colony varied from 18.2% to 76.5%. Breeding effort, hatching and fledging success were subject to a high interannual variability. We examined the influence of regional sea-ice extent on the breeding performance of snow petrels at Reeve Hill. Fewer birds were breeding when sea-ice had been extensive during April-May. Overall breeding success and fledging success were improved during years with extensive sea-ice cover in winter. Successful breeding effort and breeding success were depressed when there was extensive sea-ice cover during January-February. Sea surface temperatures also correlated to snow petrel breeding performance parameters. Previous work showed that large-scale climatic events (ENSO, Antarctic circumpolar wave) and the related sea-ice cover around the Antarctic might affect the lower trophic levels of the marine environment and consequently food availability for snow petrels. A comparison with the long-term study conducted at Ile des Petrels (Terre Adelie) suggests that despite similarities in the underlying biological processes that control snow petrel breeding performance, the nature of the correlation of large-scale environmental factors with breeding performance differs substantially between the two colonies, probably because of the confounding effects of other environmental factors acting at a local scale (local weather, nest quality), which also affect bird body condition.
Monitoring of a southern giant petrel Macronectes giganteus population on the Frazier Islands, Wilkes Land, Antarctica
Creuwels, J.C.S. ; Stark, J.S. ; Woehler, E.J. ; Franeker, J.A. van; Ribic, C.A. - \ 2005
Polar Biology 28 (2005)6. - ISSN 0722-4060 - p. 483 - 493.
long-term population - trends - seabirds - adelie
Since 1956, Southern Giant Petrels on the Frazier Islands, East Antarctica, have been counted with different census techniques, sometimes varying within seasons and among islands, which hindered analysis of the data. Protective measures for the islands from 1986 onwards have increased the need for reliable long-term census data, but reduced the ways to collect these data. Published and unpublished data were re-examined, and population trends were reconstructed based on two relatively standardised techniques: the number of active chicks (AC) and the number of apparently occupied nests (AON) around hatching. AC-values from Nelly Island from 1959 to 1998 indicate substantial periodic fluctuations, but no consistent long-term change. Since the late 1970s, AC-values on the other two islands and AON-values suggest that the breeding population may have grown by 35%. This recent growth, however, is within the extent of periodic fluctuations observed in Southern Giant Petrel population that is stable over the long term
Southern giant petrels Macronectes giganteus starve to death while on hte Antarctic continent
Creuwels, J.C.S. ; Stark, J.S. ; Petz, W. ; Franeker, J.A. van - \ 2004
Marine Ornithology 32 (2004)2004. - ISSN 1018-3337 - p. 111 - 114.
Do two closely related petrel species have a different breeding strategy in Antarctica?
Creuwels, J.C.S. ; Franeker, J.A. van - \ 2003
In: Antarctic biology in a global context. / Huiskes, A.H.L., Gieskes, W.W.C., Rozema, J., Schorno, R.M.L., van der Vies, S.M., Wolff, W.J., Leiden : Backhuys - p. 144 - 147.
fauna - broedgedrag - ecologie - ornithologie - stormvogel - zuidpoolgebied - Antarctica
Human disturbance, nursing behaviour, and lactational pup growth in a declining southern elephant seal (Mirounga leonina) population
Engelhard, G.H. ; Baarspul, A.N.J. ; Broekman, M. ; Creuwels, J.C.S. ; Reijnders, P.J.H. - \ 2002
Canadian Journal of Zoology 80 (2002)11. - ISSN 0008-4301 - p. 1876 - 1886.
fauna - Macquarie - aquatische ecologie - zeeolifant - zeezoogdieren zuidpoolgebied - Grote Oceaan
We studied lactation behaviour in relation to pup growth in southern elephant seals (Mirounga leonina) at Macquarie Island, and compared harems in areas of high and low human presence to determine if there is an effect attributable to human activitiesincluding scientific research. Pup weaning mass, a known correlate of first-year survival, was positively influenced by suckle bout durations during early and middle lactation and by maternal aggression during late lactation; no other behavioural variables were associated with weaning mass. In the area of high human presence, we observed from a distance the behaviour of mother-pup pairs directly before, during, and after visits to harems by other researchers. Alertness was raised threefold in the presence of people but quickly returned to predisturbance levels after their departure; there were no significant short-term effects on other behavioural variables. In the areas of high and low human presence, we observed the undisturbed behaviour of the seals in the absence of other people. No significant differences in any behavioural variables examined were found, indicating no long-term changes in behaviour resulting from human presence. Human disturbance therefore appears not to have significantly contributed to the population decline observed at Macquarie Island, but the conclusion requires caution given the fairly low power of our analyses.
Different breeding strategies in two closely related petrel species
Creuwels, J.C.S. ; Franeker, J.A. van - \ 2001
In: Antarctic biology in a global context; VIII SCAR international biology symposium; August 27 - September 1, 2001. Amsterdam, VU, [2001], p. S3O22
fauna - broedgedrag - ecologie - ornithologie - stormvogel - zuidpoolgebied - Antarctica
Different breeding strategies in two closely related petrel species
Creuwels, J.C.S. ; Franeker, J.A. van - \ 2001
Circumpolar Journal 16 (2001)1. - ISSN 0925-2177 - p. 35 - 35.
fauna - broedgedrag - ecologie - ornithologie - stormvogel - zuidpoolgebied - Antarctica
Studying the breeding behaviour of petrels in Antarctica by using an automatic weigh and identification nest-system
Creuwels, J.C.S. ; Franeker, J.A. van - \ 2001
Circumpolar Journal 16 (2001)1. - ISSN 0925-2177 - p. 34 - 34.
fauna - broedgedrag - ecologie - ornithologie - stormvogel - zuidpoolgebied - Antarctica
Unexpected effects of climate change on the predation of Antarctic petrels
Franeker, J.A. van; Creuwels, J.C.S. ; Veer, W. van der; Cleland, S. ; Robertson, G. - \ 2001
Antarctic Science 13 (2001)4. - ISSN 0954-1020 - p. 430 - 439.
ecologie - klimaatverandering - ornithologie - stormvogel - zuidpoolgebied - Antarctica
Antarctic petrels Thalassoica antarctica on Ardery Island, Antarctica (66°S, 110°E), experienced major reductions in breeding success and breeder survival over four seasons between 1984/85 and 1996/97. In 1996 the reason was revealed. A large snowdrift covered part of the study colony on the cliffs. Southern giant petrels Macronectes giganteus, normally lacking access to this area, exploited the snow for soft 'crash landings'. After landing they waited for the disturbed birds to resettle on their nests and then used surprise to seize and kill a victim. Predation continued into the egg period, and only stopped after the snowdrift had melted. Giant petrels showed no interest in the eggs but, during the panic caused by their activities, South Polar skuas Catharacta maccormicki took the deserted eggs. Antarctic petrel mortality due to predation within the 1996/97 season amounted to 15.4␘f experienced breeders, and breeding success was reduced to virtually zero. Weather data from the nearby Casey station over the 1980-96 period showed that a significant increase in precipitation has occurred, in combination with shifts in speed and direction of winds. We conclude that the decreases in breeding success and survival in earlier seasons were also related to increased snowfall and predation. Although similar predation behaviour by giant petrels has not been reported before, we think that it is long established and explains why nesting of the smaller fulmarine petrels is limited to steeper cliffs or sheltered sites. The complexity of the response seems unlikely to be predicted by our present understanding of how climate change affects ecosystems.
Constraints on egg laying in an unpredictable environment: different strategies in Antarctic petrel and southern fulmars in Antarctica
Creuwels, J. ; Franeker, J.A. van - \ 2000
In: Abstracts of the 7th International Seabird Group conference on seabird reproduction; Wilhelmshaven (Germany), 17-19 March 2000 / Tasker, M., - p. 19 - 19.
fauna - ecologie - ornithologie - watervogels - zuidpoolgebied - Antarctica
AWIN, an automatic weigh and identification nest-system to study petrels in Antarctica
Creuwels, J.C.S. ; Veer, W. van der; Franeker, J.A. van - \ 2000
In: Measuring beaviour 2000; proceedings of the 3rd international conference on methods and techniques in behavorial research (Nijmegen, the Netherlands, 15-18 August 2000). Wageningen, Noldus IT, [2000] / Noldus, L.P.J.J., - p. 66 - 68.
fauna - broedgedrag - ecologie - ornithologie - vogels - zuidpoolgebied - Antarctica
Climate change and Antarctic seabirds: an example of complicated ecosystem responses
Franeker, J.A. van; Creuwels, J.C.S. - \ 1998
Circumpolar Journal 12 (1998)3/4. - ISSN 0925-2177 - p. 29 - 30.
Deprivation indicates necessity for haul-out in harbor seals
Brasseur, S. ; Creuwels, J. ; Werf, B. van der; Reijnders, P. - \ 1996
Marine Mammal Science 12 (1996)4. - ISSN 0824-0469 - p. 619 - 624.
Check title to add to marked list

Show 20 50 100 records per page

Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.