Staff Publications

Staff Publications

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    '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.

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Distribution maps of cetacean and seabird populations in the North‐East Atlantic
Waggitt, J.J. ; Evans, P.G.H. ; Andrade, J. ; Banks, A.N. ; Boisseau, O. ; Bolton, M. ; Bradbury, G. ; Brereton, T. ; Camphuysen, C.J. ; Durinck, J. ; Felce, T. ; Fijn, R.C. ; Garcia‐baron, I. ; Garthe, S. ; Geelhoed, S.C.V. ; Gilles, A. ; Goodall, M. ; Haelters, J. ; Hamilton, S. ; Hartny‐mills, L. ; Hodgins, N. ; James, K. ; Jessopp, M. ; Kavanagh, A.S. ; Leopold, M. ; Lohrengel, K. ; Louzao, M. ; Markones, N. ; Martinez‐cediera, J. ; O’cadhla, O. ; Perry, S.I. ; Pierce, G.J. ; Ridoux, V. ; Robinson, K.P. ; Santos, M.B. ; Saavedra, C. ; Skov, H. ; Stienen, E.W.M. ; Sveegaard, S. ; Thompson, P. ; Vanermen, N. ; Wall, D. ; Webb, A. ; Wilson, J. ; Wanless, S. ; Hiddink, J.G. - \ 2019
Journal of Applied Ecology (2019). - ISSN 0021-8901 - 45 p.
Variation in foraging strategies over a large spatial scale reduces parent–offspring conflict in Manx shearwaters
Wischnewski, Saskia ; Arneill, Gavin E. ; Bennison, Ashley W. ; Dillane, Eileen ; Poupart, Timothée A. ; Hinde, Camilla A. ; Jessopp, Mark J. ; Quinn, John L. - \ 2019
Animal Behaviour 151 (2019). - ISSN 0003-3472 - p. 165 - 176.
dual foraging - Mid-Altlantic Ridge - parental care - parent–offspring conflict - Procellariiformes - spatial ecology - trade-off - tubenoses

Parental care can lead to a conflict of interest between parents and offspring. For central place foragers, conflict is expected to be particularly intensive in species that feed on relatively inaccessible, distant food resources. Some pelagic seabirds use distinct foraging strategies when provisioning young versus self-feeding: short trips near the colony versus long trips far away. Limited empirical evidence suggests that the strategy used by parents depends on their own state and that of their young, suggesting that dynamic optimization may help reduce conflict. Tests of this hypothesis, however, are scarce. Using a combination of GPS tracking and nest monitoring, we examined whether foraging strategy choice by Manx shearwaters, Puffinus puffinus, is explained by the body condition of parents and offspring before trip departure, and whether choice affects condition upon return. When chick body condition was poor prior to departure, subsequent foraging trips by adults were significantly shorter and faster, and chick condition upon return improved. When chick condition was good prior to departure, the reverse happened. There was no evidence that adult condition affected subsequent trip choice, but adults returning from slow, long-duration trips were in comparatively better condition. Thus, although the trips that were good for offspring were different to those that were favourable for adults, trip choice was only dependent on chick condition, which may explain why there was no evidence for a trade-off between adult and chick condition during individual trips. Our results suggest that spatiotemporal variation in foraging strategies is driven by the conflicting needs of parents and offspring, but that the parents can reduce the conflict, resulting in no detectable trade-off under these conditions. This link between parental care and space use is likely to be widespread in central place foragers but remains largely unexplored in most systems.

Aerial surveys of cetaceans and seabirds in Irish waters : occurrence, distribution and abundance in 2015-2017
Rogan, E. ; Breen, P. ; Mackey, Mick ; Cañadas, Ana ; Scheidat, M. ; Geelhoed, S.C.V. ; Jessopp, Mark - \ 2018
- 298 p.
observe programme - aerial survey - cetacean - seabird - abundance - density - megafauna - distance sampling - Ireland - Atlantic - Celtic Sea - Irish Sea
New insights into ocean sunfish (Mola mola) abundance and seasonal distribution in the northeast Atlantic
Breen, Patricia ; Cañadas, Ana ; Ó Cadhla, Oliver ; Mackey, Mick ; Scheidat, Meike ; Geelhoed, Steve C.V. ; Rogan, Emer ; Jessopp, Mark - \ 2017
Scientific Reports 7 (2017). - ISSN 2045-2322 - 9 p.
The ocean sunfish, Mola mola, is the largest teleost fish in the world. Despite being found in all oceans of the world, little is known about its abundance and factors driving its distribution. In this study we provide the first abundance estimates for sunfish in offshore waters in the northeast Atlantic and the first record of extensive sunfish presence in these waters year-round. Abundance estimates and predictive distributions for sunfish in approximately 300,000 km² of the northeast Atlantic were derived from large scale offshore aerial surveys in 2015–2016 using distance sampling techniques. Generalized additive models of sunfish density were fitted to survey data from 17,360 km of line transect effort resulting in minimum abundance estimates of 12,702 (CI: 9,864-16,357) in the summer (Density = 0.043 ind/km²) and 8,223 individuals (CI: 6,178-10,946) (Density = 0.028 ind/km²) in the winter. Density surface models predicted seasonal shifts in distribution and highlighted the importance of the mixed layer depth, possibly related to thermoregulation following deep foraging dives. The abundance estimate and estimated daily consumption of 2,600 tonnes of jellyfish in the northeast Atlantic highlights the need to re-assess the importance of this species in the pelagic ecosystem, and its role in top-down control of jellyfish blooms.
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