German, D.P., D. Raven, and N.M.
Aguilar-Roca (2017) Floating fishes: an activity investigating
overfishing, buoyancy, and gas compressibility. American Biology Teacher 79: 49-54 [pdf]
Clements, K.D., D.P. German, J.
Piche, A. Tribollet, and J.H. Choat. (2017) Integrating ecological
roles and trophic diversification on coral reefs: multiple lines of
evidence identify parrotfishes as microphages.
Biological Journal of the
Linnean Society 120: 729-751 [pdf]
Connor, K., A. Sung, N.S.
Garcia, A. Gracey, and D.P. German (2016) Modulation of digestive
physiology and biochemistry in Mytilus
in response to
feeding level acclimation and intertidal microhabitat.
German, D.P.*, D.M. Foti*, J.
Heras, H. Amerkhanian, and B.L. Lockwood (2016) Elevated gene copy
number does not always explain elevated amylase activities in fishes.
Physiological and Biochemical
Zoology 89: 277-293 *These authors contributed equally to this
Jhaveri, P., Y. Papastamatiou,
and D.P. German (2015) Digestive enzyme activities in the guts of
bonnethead sharks (Sphyrna tiburo)
provide insight into their digestive strategy and evidence
for microbial digestion in their hindguts. Comparative Biochemistry and Physiology A:
189: 76-83 [pdf]
German, D.P., and S.D. Allison
Drying and substrate concentrations interact to inhibit decomposition
of carbon substrates added to combusted Inceptisols from a boreal
forest. Biology and Fertility of
Soils 51: 525-533 [pdf]
Sullam, K.E., C.M. Dalton, J.A.
Russell, S.S. Kilham, R. El-Sabaawi, D.P. German, and A.S. Flecker.
(2015) Changes in digestive traits and body nutritional composition
accommodate a trophic niche shift in Trinidadian guppies. Oecologia 177: 245-257 [pdf]
German, D.P., A. Sung, P.K. Jhaveri, and R. Agnihotri (2015). More than
one way to be an herbivore: convergent evolution of herbivory using
different digestive strategies in prickleback fishes (family
write up about the paper
S.D., S.S. Chacon, and
D.P. German (2014) Substrate concentration constraints on microbial
decomposition. Soil Biology and
Biochemistry 79: 43-49. [pdf]
German, D.P., A.K. Gawlicka, and
M.H. Horn (2014) Evolution of ontogenetic dietary shifts and associated
gut features in prickleback fishes (Teleostei: Stichaeidae). Comparative Biochemistry and Physiology B 168:
Kim, K.H., M.H. Horn, A.E. Sosa,
and D.P. German (2014) Sequence of an a-amylase gene in four related
species of prickleback fishes (Teleostei: Stichaeidae): ontogenetic,
dietary, and species-level effects. Journal
of Comparative Physiology B 184: 221-234 [pdf]
Bach, C.E., D.D. Warnock, D.J.
Van Horn, M.N. Weintraub, R.L. Sinsabaugh, S.D. Allison, and D.P.
German (2013) Measuring phenol oxidase and peroxidase activities
with pyrogallol, l-DOPA, and ABTS: effect of assay conditions and soil
type. Soil Biology & Biochemistry
67: 183-191 [pdf]
Alster, C.J., D.P. German, Y.
S.D. Allison (2013)
Microbial enzymatic response to drought and to nitrogen addition
in a southern California grassland. Soil
Biology & Biochemistry 64: 68-79 [pdf]
Weintraub, A.S. Grandy, C.L. Lauber, Z.L.
S.D. Allison (2012)
Response to Steen and Ziergovel's comment on "Optimization of
hydrolytic and oxidative enzyme methods for
ecosystem studies". Soil
Biology & Biochemistry 48: 198-199 [pdf]
German, D.P., K.R.B. Marcelo,
M.M. Stone and S.D. Allison (2012) The Michaelis-Menten kinetics of
soil extracellular enzymes in response to temperature: a
cross-latitudinal study. Global
Change Biology 18: 1468-1479 [pdf]
Stone, M.M., M.S. Weiss, C.L.
Goodale, M.B. Adams, I.J. Fernandez, D.P. German, and S.D. Allison
(2012) Temperature sensitivity of soil enzyme kinetics under
N-fertilization in two temperate forests. Global Change Biology 18: 1173-1184
Lujan, N.K., D.P. German, and
K.L. Winemiller (2011) Do wood grazing fishes partition their
niche? Morphological and isotopic evidence for trophic segregation in
Neotropical Loricariidae. Functional
Ecology 25: 1327-1338 [pdf]
Weintraub, A.S. Grandy, C.L. Lauber, Z.L.
S.D. Allison (2011)
Optimization of hydrolytic and oxidative enzyme methods for
Biology & Biochemistry 43: 1387-1397 [pdf]
Please see the Corrigendum to this
article, in which we correct two of the equations: equation 3
and equation 5 [pdf]
A Web of Science "highly cited
D.P., S. Chacon and S.D. Allison (2011) Substrate
concentration and enzyme allocation can affect rates of microbial
Ecology 92: 1471-1480 [pdf]
R.D., D.P. German, J.M.
Manjakasy, I. Farr, J. Hansen and I.R. Tibbetts (2011) Enzymatic
digestion in stomachless fishes: how a simple gut accommodates both
carnivory and herbivory. Journal of
Comparative Physiology B 181: 603-613 [pdf]
(New Scientist did a story on
this article. You can see it here.)
D.P. (2011) Digestive efficiency. In: Encyclopedia
of Fish Physiology, From Genome to Environment,
A.P., J.J. Cech, J.G. Richards, and E.D. Stevens (Eds). Elsevier, San
CA (due to copyright law, I can't provide a pdf of this chapter
for free on my website, but you can ask me for it! Send me an
e-mail to request a pdf)
German and I.R.
Why can't young fish eat plants?
enzymes nor gut development preclude herbivory in the young of a
marine herbivorous fish. Comparative
Biochemistry and Physiology B 158:
D.P. and R.D. Miles (2010) Stable carbon and
in blood and fin tissue of the catfish Pterygoplichthys
(Siluriformes, Loricariidae). Environmental
Biology of Fishes 89: 117-133
D.P., D.T. Neuberger, M.N. Callahan, N.R. Lizardo and D.H. Evans
(2010) Feast to famine: the effects of food quality and quantity on the
structure and function of a detritivorous catfish (Teleostei:
Biochemistry and Physiology A 155:
German, D.P., B.C. Nagle, J.M.
Villeda, A.M. Ruiz, A.W. Thomson, S.
Contreras-Balderas and D.H. Evans (2010) Evolution of
in a carnivorous clade of minnows (Teleostei: Cyprinidae): effects on
gut size and digestive physiology. Physiological and
Zoology 83: 1-18 [pdf]
Note: the value for Campostoma
anomalum Zihler's Index (ZI)
of this paper should be 20.76,
not 2.76, as is listed. This mistake that was missed in the
proofing process. Please make a note of this error on your
of this article.
D.P. (2009) Inside the guts of wood-eating catfishes: can they digest
wood? Journal of
Comparative Physiology B 179:
D.P. and R.A. Bittong (2009) Digestive enzyme activities and
gastrointestinal fermentation in wood-eating
of Comparative Physiology B 179:
D.P. (2009) Do herbivorous minnows have "plug-flow reactor" guts?
Evidence from digestive enzyme activities, luminal nutrient
concentrations and gastrointestinal fermentation. Journal of
Comparative Physiology B
F., H. Yang, Q. Xu, F. Wang, G. Liu, and D.P. German (2008) Phenotypic
plasticity of gut structure and function during periods of inactivity
and Physiology B
German, D.P. and M.H. Horn (2006) Gut length and mass in herbivorous
and carnivorous prickleback fishes (Teleostei: Stichaeidae):
ontogenetic, dietary, and phylogenetic effects. Marine Biology
Horn, M.H., A. Gawlicka, D.P. German, E.A. Logothetis, J.W. Cavanagh
and K.S. Boyle (2006) Structure and function of the stomachless
digestive system in three related species of New World silverside
fishes (Atherinopsidae) representing herbivory, omnivory, and
149: 1237-1245 [pdf]
Pryor, G.S., D.P. German, and K.A. Bjorndal (2006) Gastrointestinal
fermentation in greater sirens (Siren
40: 112-117 [pdf]
German, D.P., M.H. Horn and A. Gawlicka (2004) Digestive enzyme
activities in herbivorous and carnivorous prickleback fishes
(Teleostei: Stichaeidae): ontogenetic, dietary, and phylogenetic
Sturz, A., D.P. German and D. Putnam (1998). Salton Sea Geothermal
Mud Pots: 1991-1998. In: Geology and
Geothermal Resources of the
Imperial and Mexicali Valleys
L. Lindsey and W. Hample (eds).
Diego Association of Geologists publication 98-1, Pg. 109-128.