| 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | |
| In Progress |
Press release |
| Lomascolo, S. & H. M. Schaefer 2010: Signal convergence in fruits: a result of selection by frugivores. Journal of Evolutionary Biology (in press). |
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| Schaefer, H. M. 2010: Visual communication: evolution, ecology, and functional mechanisms. In: Animal Behaviour: Evolution & Mechanisms Peter M. Kappeler (ed.), chapter 3, Springer, Heidelberg in press |
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| 2010 |
| Rolshausen, G., K. Hobson & H. M. Schaefer: Spring arrival along a migratory divide of sympatric blackcaps (Sylvia atricapilla). Oecologia 162: 175-183 |
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2009 |
| Rolshausen G., Segelbacher, G., Hobson K. & H. M. Schaefer 2009: A recent migratory divide facilitates the contemporary evolution of reproductive isolation and phenotypic divergence in sympatry. Current Biology 19: 2097-2101. |
 Linklist |
| Schaefer, H. M. & G. Ruxton 2009: Deception in plants: mimicry or perceptual exploitation? Trends in Ecology & Evolution 24: 676-685 |
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| Klauke, N., Masello JF, Quillfeldt P, Segelbacher G 2009: Isolation of tetranucleotide microsatellite loci in the burrowing parrot (Cyanoliseus patagonus). Journal of Ornithology 150: 921-924. |
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| Fadzly, N., J. Cameron, H. M. Schaefer & K. C. Burns: Ontogenetic colour patterns in an insular tree: signalling to extinct browsing birds? New Phytologist 184: 495-501. |
www.sciencenow.sciencemag.org/
www.science.slashdot.org/
www.speroforum.com/
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Catoni, C., Peters, A. & H. M. Schaefer: Flavonoids enhance conspicuousness of melanin-based trait in male blackcaps but not of female homologous trait or of sexually monochromatic traits. Journal of Evolutionary Biology 22: 1649 -1657.. |
www.sueddeutsche.de |
| Schaefer H. M. & J. Braun 2009: Reliable cues and signals
of fruit quality are contingent on the habitat in black elder
(Sambucus nigra). Ecology 90: 1564-1573 |
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| Ruxton, G. & H. M. Schaefer: The timing of food-deceptive
flowers: a commentary on Internicola et al. (2008) Journal
of Evolutionary Biology 22: 1333-1336. |
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| Dimitrova, M., N. Stobbe, H. M. Schaefer & S. Merilaita:
Concealed by conspicuousness: distractive prey markings and
backgrounds. Proceedings Royal Society London B 276: 1905-1910. |
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| Cazetta, E., H. M. Schaefer & M. Galetti 2009: Why are
fruits colorful? The relative importance of achromatic and
chromatic contrasts for detection by birds. Evolutionary
Ecology 23: 233-244. |
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| Burns, K., E. Cazetta, M. Galetti, A. Valido & H. M.
Schaefer: Geographic patterns in fruit colour diversity –do
leaves constrain the colours of fleshy fruits? Oecologia 159:
337-343. |
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| Stobbe, N., M. Dimitrova, S. Merilaita & H. M. Schaefer:
Chromaticity in the UV/blue range facilitates the search for
achromatically background-matching prey in birds. Philosophical
Transactions Royal Society B 346: 511-517. |
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| 2008 |
| Segelbacher G., Weis-Dootz T., Rolshausen G., Serrano D. & H.
M. Schaefer 2008: Isolation of ten tetranucleotide microsatellite
loci in the blackcap (Sylvia atricapilla). Molecular
Ecology Resources 8: 1108-1110. |
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| Catoni C., A. Peters & H. M. Schaefer 2008: Life-history
trade-offs are influenced by the diversity, availability and
interactions among dietary antioxidants. Animal Behaviour 76:
1107-1119. |
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| Catoni, C., H. M. Schaefer, & A. Peters 2008: Fruit for
health: The effect of anthocyanins on humoral immune response
and food selection in a frugivorous bird. Functional
Ecology 22: 649-654. |
Linklist |
| Schaefer, H. M., M. Rentzsch, M. Breuer 2008: Anthocyanins
reduce fungal growth in fruits. Natural Product Communication 3: 1267-1272 |
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| Stobbe, N. & H. M. Schaefer: Enhancement of chromatic
contrast increases predation risk for striped butterflies. Proceedings
Royal Society B: 275: 1535-1541. |
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| Schaefer, H. M., K. Spitzer & F. Bairlein 2008: Long-term
effects of pre-experience determine nutrient and colour discrimination
abilities in birds. Frontiers in Zoology 5: 4. |
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| Schaefer, H. M., K. McGraw & C. Catoni: Birds use fruit
colour as honest signals of antioxidant contents. Functional
Ecology 22: 303-310. |
www.economist.com/ |
| Schaefer, H. M. & G. Ruxton 2008: Fatal attraction --
carnivorous plants roll out the red carpet to lure insects. Biology
Letters 4: 153-155. |
Hamburger
Abendblatt
n-tv.de |
| Cazetta, E., H. M. Schaefer & M. Galetti 2008: Does attraction
to frugivores or defense against pathogens shape fruit pulp
composition? Oecologia 155: 277-286. |
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| 2007 |
| Schaefer, H. M. & K. J. Gould: Modelling the
evolution of leaf colouration with binary assumptions is barking
up the wrong tree. Journal of Theoretical Biology 249:
638-639 |
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| Schaefer HM & Schaefer V 2007: The evolution of visual
fruit signals: concepts and constraints. In: Dennis AJ, Schupp
EW, Green RJ, Wescott DA (eds) Seed dispersal: Theory and its
application in a changing world. CABI, Wallingford, UK,
pp 59-77 |
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| Schaefer, H. M. & G. Rolshausen 2007: Reply. How to investigate
a putative signal? Stick to the right method when assessing
the response of a receiver. Biol. Lett. 3: 152-153. |
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| Rolshausen, G. & H. M. Schaefer 2007: Do aphids paint
the tree red? Can herbivore resistance or photoprotection explain
colourful leaves in autumn? Plant Ecology 191: 77-84. |
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| Schaefer, H. M. & G. Rolshausen 2007: Aphids do not attend
to leaf colour as handicap signal, but to the handicap of reproductive
investment. Biol. Lett. 3: 1-4. |
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| Schaefer, H. M., Schaefer, V. & M. Vorobyev 2007: Are
fruit colors adapted to consumer vision and birds equally efficient
in detecting colorful signals? American Naturalist 169: S159-169. |
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| 2006 |
| Schaefer, H. M. & V. Schaefer 2006: The fruits of selectivity – how
birds forage on Goupia glabra fruits. Journal
for Ornithology 147: 638-643 |
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| Schaefer, H. M. & G. Rolshausen 2006: Do alternative
hypotheses evoke ‚red alert’ among co-evolutionists?
BioEssays 28: 960-961. |
| Schaefer, H. M. & N. Stobbe 2006: Disruptive
coloration provides camouflage independent of background matching. Proc.
R. Soc. London B. 273: 2427-2432. |
| Schaefer, H. M., Levey, D. J., Schaefer
V. & M: L. Avery 2006: The role of chromatic and achromatic
signals for fruit detection by birds. Behavioral Ecology 17:
784-789 ( pre-print). |
Schaefer, H. M. & G. Rolshausen 2006: Plants on red alert – do
insects pay attention? BioEssays 28 (1): BioEssays 28(1):
65-71http://www.bioessays.demon.co.uk/ |
| 2005 |
| Heinz, M., Schmidt V. & H. M. Schaefer (2005): New distributional
information on the Jocotoco Antpitta (Formicariidae: Grallaria
ridgelyi) in South Ecuador. Cotinga 23: 24-26. |
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| 2004 |
| Schaefer H. M.& D. M. Wilkinson 2004: Red leaves, insects
and coevolution, a red herring? Trends Ecol. Evol. 19:
616-618. |
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| Schaefer, H. M., V. Schmidt & D. J. Levey 2004: Plant-animal
interactions signal new insights in communication. Trends
Ecol. Evol. 19: 577-584. |
| Schmidt, V., H. M. Schaefer & H. Winkler 2004: Conspicuousness,
not colour as foraging cue in plant-animal signaling. Oikos 106:
551-557. |
| Schaefer H. M. & V. Schmidt 2004: Detectability and content
as opposing signal characteristics in fruits. Proceedings
Royal Society London B 271: S370-S373. doi 10/1098/rsbl2004.0191 |
| Schmidt, V. & H. M. Schaefer 2004: Unlearned preferences
of red facilitates recognition of palatable food in young omnivorous
birds. Evolutionary Ecology Research 6: 919-925. |
| Oppel, S., Schaefer, H. M., Schmidt, V. & B. Schröder
2004: Habitat selection of the Pale-headed Brushfinch, Atlapetes
pallidiceps, the role of interspecific competition, and implications
for management. Biological Conservation 118: 33-40.
doi: 10.1016/j.biocon.2003.07.006 |
| Oppel, S., H. M. Schaefer, V. Schmidt & B. Schröder
2004: How much suitable habitat is left for the last known
population of the Pale-headed Brushfinch? Condor 106:
429-434. |
| Oppel, S., H. M. Schaefer, V. Schmidt & B. Schröder
2004: Cowbird parasitism of the Pale-headed Brush-Finch Atlapetes
pallidiceps: Implications for conservation and management. Bird
Conservation International 14: 63-75. |
| Schmidt, V. & H. M. Schaefer 2004: Der Orcessittich in
Buenaventura – Hoffnung für eine bedrohte Art. Mittl.
Zool. Ges. Art & Pop. Schutz 20: 20-22. |
| Schmidt, V. & H. M. Schaefer 2004: Pale-headed Brushfinch
recovery project in Southwestern Ecuador 2002-2003. 13pp, published
at www.fjocotoco.org |
| Schaefer H. M. & V. Schmidt 2004: Final report of the
El Oro Parakeet project, Southwestern Ecuador 2002-2003. 11pp,
published at www.fjocotoco.org |
| 2003 |
| Schaefer, H. M., Schmidt V. & F. Bairlein 2003: Discrimination
abilities for the main nutrients - which difference matters
for choosy birds? Animal Behaviour 65: 531-541. |
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| Schaefer, H. M., Schmidt, V. & H. Winkler 2003: Testing
the Defence Trade-off Hypothesis: how contents of nutrients
and secondary compounds affect fruit removal. Oikos 102:
318-328. |
| Oppel, S., Schaefer H. M. & V. Schmidt 2003: First description
of the nest, eggs, and breeding behavior of the Pale-headed
Brushfinch (Atlapetes pallidiceps) from Ecuador. Wilson
Bulletin 115 (4) 360-366. |
| Schaefer, H. M. 2003: Über den Einfluß von Fruchtinhaltsstoffen
auf die Nahrungssuche von Vögeln. J. Ornithol. 144:
101-103. |
| Schaefer, H. M. & V. Schmidt 2003: Ecology and conservation
of the El Oro Parakeet (Pyrrhura orcesi). Cyanopsitta 71:
10; 15-16 (including cover). |
| 2002 |
| Schaefer H. M. & V. Schmidt 2002a: Feeding strategies
and food intake of Blackcaps consuming ripe or unripe fruits
and insects. J. Ornithol. 143: 341-350. |
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| Schaefer H. M. & V. Schmidt 2002b: Der Orces-Sittich:
Projektbericht über den Schutz einer wenig bekannten,
bedrohten Art. Mittl. Zool. Ges. Art & Pop. Schutz18:
22-23. |
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| Schmidt, V. & H. M. Schaefer 2002: The El Oro Parakeet – first
insights in the ecology and implementation for further conservation
actions. Cyanopsitta 66: 20-22. |
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| Schaefer, H. M., Schmidt, V. & J. Wesenberg 2002: Vertical
stratification and caloric content of fleshy fruit production
and standing crop in a tropical lowland forest. Biotropica 34:
244-253. |
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| 2000 |
| Schaefer, H. M., Naef-Daenzer, B., Leisler, B., Schmidt,
V., Müller, J. K. & K. Schulze-Hagen. 2000: Spatial
behaviour in the Aquatic Warbler (Acrocephalus paludicola)
during mating and breeding. J. Ornithol 141: 418-424. |
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| Krüger, T., Bohnet, V., Dierschke, J., Dietrich, K.,
Pegram, G. & H. M. Schaefer 2000: Die Brutvögel des
Voslapper Grodens 2000 (Stadt Wilhelmshaven). Vogelkdl.
Ber. Niedersachs. 32: 1-10. |
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| 1999 |
| Schmidt, V., Schaefer, H. M. & B. Leisler 1999: Song
behaviour and range use in the polygamous Aquatic Warbler Acrocephalus
paludicola. Acta Ornithologica 34: 209-213. |
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| Schulze-Hagen, K., Leisler, B., Schaefer, H. M. & V.
Schmidt 1999: The breeding system of the Aquatic Warbler Acrocephalus
paludicola – a review of new results. Vogelwelt 120:
87-96. |
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| 1998 |
| Lege, H. & H. M. Schaefer 1998: Nachweis einer Schwalbenmöwe
(Larus sabini) in Südbaden. Naturschutz am südl.
Oberrhein 2: 207-210 |
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