Publications
78 results found
Schroeder J, Cleasby I, Dugdale HL, et al., 2013, Social and genetic benefits of parental investment suggest sex differences in selection pressures, JOURNAL OF AVIAN BIOLOGY, Vol: 44, Pages: 133-140, ISSN: 0908-8857
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- Citations: 16
Schroeder J, Nakagawa S, Cleasby IR, et al., 2012, Passerine birds breeding under chronic noise experience reduced fitness, PLOS One, Vol: 7, ISSN: 1932-6203
BACKGROUND: Fitness in birds has been shown to be negatively associated with anthropogenic noise, but the underlying mechanisms remain obscure. It is however crucial to understand the mechanisms of how urban noise impinges on fitness to obtain a better understanding of the role of chronic noise in urban ecology. Here, we examine three hypotheses on how noise might reduce reproductive output in passerine birds: (H1) by impairing mate choice, (H2) by reducing territory quality and (H3) by impeding chick development. METHODOLOGY/PRINCIPAL FINDINGS: We used long-term data from an island population of house sparrows, Passer domesticus, in which we can precisely estimate fitness. We found that nests in an area affected by the noise from large generators produced fewer young, of lower body mass, and fewer recruits, even when we corrected statistically for parental genetic quality using a cross-fostering set-up, supporting H3. Also, individual females provided their young with food less often when they bred in the noisy area compared to breeding attempts by the same females elsewhere. Furthermore, we show that females reacted flexibly to increased noise levels by adjusting their provisioning rate in the short term, which suggests that noise may be a causal factor that reduces reproductive output. We rejected H1 and H2 because nestbox occupancy, parental body mass, age and reproductive investment did not differ significantly between noisy and quiet areas. CONCLUSIONS/SIGNIFICANCE: OUR RESULTS SUGGEST A PREVIOUSLY UNDESCRIBED MECHANISM TO EXPLAIN HOW ENVIRONMENTAL NOISE CAN REDUCE FITNESS IN PASSERINE BIRDS: by acoustically masking parent-offspring communication. More importantly, using a cross-fostering set-up, our results demonstrate that birds breeding in a noisy environment experience significant fitness costs. Chronic noise is omnipresent around human habitation and may produces similar fitness consequences in a wide range of urban bird species.
Dawson DA, Horsburgh GJ, Krupa AP, et al., 2012, Microsatellite resources for Passeridae species: a predicted microsatellite map of the house sparrow Passer domesticus, MOLECULAR ECOLOGY RESOURCES, Vol: 12, Pages: 501-523, ISSN: 1755-098X
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- Citations: 36
Schroeder J, Burke T, Mannarelli M-E, et al., 2012, Maternal effects and heritability of annual productivity, JOURNAL OF EVOLUTIONARY BIOLOGY, Vol: 25, Pages: 149-156, ISSN: 1010-061X
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- Citations: 37
Dugdale HL, Hinsch M, Schroeder J, 2011, Biased sampling: no 'Homer Simpson Effect' among high achievers, TRENDS IN ECOLOGY & EVOLUTION, Vol: 26, Pages: 622-623, ISSN: 0169-5347
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- Citations: 4
Cleasby IR, Burke T, Schroeder J, et al., 2011, Food supplements increase adult tarsus length, but not growth rate, in an island population of house sparrows (Passer domesticus), BMC Research Notes, Vol: 4, ISSN: 1756-0500
BACKGROUND: Variation in food supply during early development can influence growth rate and body size in many species. However, whilst the detrimental effects of food restriction have often been studied in natural populations, how young individuals respond to an artificial increase in food supply is rarely investigated. Here, we investigated both the short-term and long-term effects of providing house sparrow chicks with food supplements during a key period of growth and development and assessed whether providing food supplements had any persistent effect upon adult size (measured here as tarsus length). RESULTS: Male nestlings tended to reach higher mass asymptotes than females. Furthermore, brood size was negatively associated with a chick's asymptotic mass. However, providing food supplements had no influence upon the growth rate or the asymptotic mass of chicks. Adults that received food supplements as chicks were larger, in terms of their tarsus length, than adults that did not receive extra food as chicks. In addition, the variation in tarsus length amongst adult males that were given food supplements as chicks was significantly less than the variance observed amongst males that did not receive food supplements. CONCLUSIONS: Our results demonstrate that the food supply chicks experience during a critical developmental period can have a permanent effect upon their adult phenotype. Furthermore, providing extra food to chicks resulted in sex-biased variance in a size-related trait amongst adults, which shows that the degree of sexual size dimorphism can be affected by the environment experienced during growth.
Lourenco PM, Kentie R, Schroeder J, et al., 2011, Repeatable timing of northward departure, arrival and breeding in Black-tailed Godwits <i>Limosa l</i>. <i>limosa</i>, but no domino effects, JOURNAL OF ORNITHOLOGY, Vol: 152, Pages: 1023-1032, ISSN: 0021-8375
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- Citations: 55
Schroeder J, Piersma T, Groen NM, et al., 2011, Reproductive timing and investment in relation to spring warming and advancing agricultural schedules, Journal of Ornithology, Vol: 153, Pages: 327-336, ISSN: 0021-8375
Advances in mowing schedules have led to early and rapid declines in the seasonal food availability for, and survival rates of, chicks of grassland-breeding waders. Concurrently, increased levels of soil fertilization may have improved food abundance for adults. These developments are assumed to have resulted in an advancement of laying during 1930–1976 in several meadowbird species, including Black-tailed Godwits. Despite an apparent selective advantage of early breeding, after 1976 Godwits stopped advancing their laying dates. We have analyzed the timing of breeding and reproductive investment in Dutch Black-tailed Godwits relative to recent changes in agricultural practices and climate during 1976–2007. Early and late spring temperatures and precipitation in March were used as indicators for the timing of fertilizer application and mowing, and also as qualitative measures of relative food availability for adults and chicks. When precipitation was higher in March, Black-tailed Godwits laid earlier. Following warmer winters, the earliest females laid larger eggs, which hatched heavier chicks with a higher survival probability. We suggest that the positive effect of an increasing March precipitation on invertebrate abundance may be constrained by the current policy of rigid control of the water table. This policy prevents Godwits from further advancing laying dates, which would increase their chick’s survival prospects under increasingly early mowing schedules. Policy-makers should, next to delaying mowing schedules, also consider reduced draining in early spring as a tool to help stop the population decline of the Black-tailed Godwit.
Schroeder J, Nakagawa S, Hinsch M, 2011, Behavioural ecology is not an endangered discipline, TRENDS IN ECOLOGY & EVOLUTION, Vol: 26, Pages: 320-321, ISSN: 0169-5347
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- Citations: 4
Schroeder J, Cleasby IR, Nakagawa S, et al., 2011, No evidence for adverse effects on fitness of fitting passive integrated transponders (PITs) in wild house sparrows <i>Passer domesticus</i>, JOURNAL OF AVIAN BIOLOGY, Vol: 42, Pages: 271-275, ISSN: 0908-8857
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- Citations: 43
Schroeder J, Mitesser O, Hinsch M, 2010, Correlations between Sequential Timing Decisions Do Not Necessarily Indicate Strategic Behavior: A Comment on Bety et al., AMERICAN NATURALIST, Vol: 176, Pages: 835-837, ISSN: 0003-0147
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- Citations: 2
Schroeder J, Kentie R, van der Velde M, et al., 2010, Linking intronic polymorphism on the CHD1-Z gene with fitness correlates in Black-tailed Godwits <i>Limosa l. limosa</i>, IBIS, Vol: 152, Pages: 368-377, ISSN: 0019-1019
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- Citations: 23
Lourenco PM, Kentie R, Schroeder J, et al., 2010, Phenology, stopover dynamics and population size of migrating Black-tailed Godwits <i>Limosa limosa limosa</i> in Portuguese rice plantations, ARDEA, Vol: 98, Pages: 35-42, ISSN: 0373-2266
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- Citations: 26
Schroeder J, Lourenco PM, Hooijmeijer JCEW, et al., 2009, A possible case of contemporary selection leading to a decrease in sexual plumage dimorphism in a grassland-breeding shorebird, BEHAVIORAL ECOLOGY, Vol: 20, Pages: 797-807, ISSN: 1045-2249
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- Citations: 19
Van Den Brink V, Schroeder J, Both C, et al., 2008, Space use by Black-tailed Godwits <i>Limosa limosa limosa</i> during settlement at a previous or a new nest location, BIRD STUDY, Vol: 55, Pages: 188-193, ISSN: 0006-3657
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- Citations: 16
Schroeder J, Lourenco PM, van der Velde M, et al., 2008, Sexual dimorphism in plumage and size in Black-tailed Godwits <i>Limosa limosa limosa</i>, ARDEA, Vol: 96, Pages: 25-37, ISSN: 0373-2266
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- Citations: 36
Schroeder J, Heckroth M, Clemens T, 2008, Against the trend:: increasing numbers of breeding Northern Lapwings <i>Vanellus vanellus</i> and Black-tailed Godwits <i>Limosa limosa limosa</i> on a German Wadden Sea island, BIRD STUDY, Vol: 55, Pages: 100-107, ISSN: 0006-3657
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- Citations: 2
Schroder J, Hooijmeijer J, Both C, et al., 2006, Individual characteristics, timing and environmental factors influencing reproductive success in Black-tailed Godwits, Publisher: SPRINGER, Pages: 248-249, ISSN: 0021-8375
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