Abstract
During their annual mid- to late-summer southward migration, Semipalmated Sandpipers (Calidris pusilla) feed intensively on the amphipod Corophium volutator on intertidal mudflats in the Bay of Fundy. Corophium, in turn, feed on diatoms and bacteria. Using a series of bird exclosures and fertilizer addition, we examined top–down and bottom–up effects, and investigated the presence of a trophic cascade in the mudflat community during the period when birds are abundant. Although both top–down and bottom–up forces were present in this system, neither transmitted beyond a single trophic link. Predation by shorebirds, which may be less size-selective than previously thought, reduced Corophium abundance in control plots by approximately 80% relative to exclosures, but most other species were unaffected. Shorebird predation did not result in an increase in diatom abundance, as predicted under the trophic cascade hypothesis. Fertilizer increased diatom abundance, but had no effect on Corophium abundance or bird predation, and little effect on other mudflat invertebrates. The only indirect effect observed was on mud snails (Ilyanassa obsoleta), which, by rapidly responding to changes in diatom abundance, compensated for both bird exclusion and fertilizer addition, and prevented the trophic cascade. This population response by snails, possibly stemming from competition with Corophium, probably contributed to the stability of the community. Our results provide an example of short-term compensation in a simple intertidal community, and highlight the importance of considering direct and indirect effects in community ecological studies. We conclude that while compensatory interactions that block trophic cascades may be more common in more complex ecosystems, they are not restricted to them.
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W. G. Ambrose (1984) ArticleTitleInfluences of predatory polychaetes and epibenthic predators on the structure of a soft-bottom community in a Maine estuary Journal of Experimental Marine Biology and Ecology 81 115–145 Occurrence Handle10.1016/0022-0981(84)90002-9
Appy, T. D., L. E. Linkletter & M. J. Dadswell, 1980. A guide to the marine flora and fauna of the Bay of Fundy: Annelida:Polychaeta. Fisheries Marine Service Technical Report 920, 124 pp
E. L. Berlow (1997) ArticleTitleFrom canalization to contingency: historical effects in a successional rocky intertidal community Ecological Monographs 67 435–460 Occurrence Handle10.2307/2963465
Boates, J. S., 1980. Foraging Semipalmated Sandpipers Calidris pusilla (L.) and their major prey Corophium volutator (Pallas) on the Starrs Point mudflat, Minas Basin, MSc Thesis, Acadia University, Wolfville, Nova Scotia, Canada, 199
A. L. Bosman J. T. DuToit P. A. R. Hockey G. M. Branch (1986) ArticleTitleA field experiment demonstrating the influence of seabird guano on intertidal primary production Estuarine, Coastal and Shelf Sciences 7 283–294
D. D. Bretz R. V. Dimock SuffixJr. (1983) ArticleTitleBehaviorally important characteristics of the mucous trail of the marine gastropod Ilyanassa obsoleta (Say) Journal of Experimental Marine Biology and Ecology 71 181–191 Occurrence Handle10.1016/0022-0981(93)90072-V
J. A. Commito (1982) ArticleTitleImportance of predation by infaunal polychaetes in controlling the structure of a soft-bottom community in Maine, USA Marine Biology 58 77–81 Occurrence Handle10.1007/BF00393144
M. S. Connor J. M. Teal I. Valiela (1982) ArticleTitleThe effect of feeding by mud snails, Ilyanassa obsoleta (Say), on the structure and metabolism of a laboratory benthic algal community Journal of Experimental Marine Biology and Ecology 65 29–45 Occurrence Handle10.1016/0022-0981(82)90174-5 Occurrence Handle1:CAS:528:DyaL38XhsV2ntr0%3D
S. D. Cooper D. W. Winkler P. H. Lenz (1984) ArticleTitleThe effect of grebe predation on a brine shrimp population Journal of Animal Ecology 53 51–64 Occurrence Handle10.2307/4341
T. L. Crewe D. J. Hamilton A. W. Diamond (2001) ArticleTitleEffects of mesh size on sieved samples of Corophium volutator Estuarine, Coastal and Shelf Science 53 151–154 Occurrence Handle10.1006/ecss.2001.0795
G. R. Daborn C. L. Amos M. Brylinsky H. Christian G. Drapeau R. W. Faas J. Grant B. Long D. M. Paterson G. M. E. Perillo M. C. Piccolo (1993) ArticleTitleAn ecological cascade effect: migratory birds affect stability of intertidal sediments Limnology and Oceanography 38 225–231 Occurrence Handle1:CAS:528:DyaK3sXlsVKjtrs%3D Occurrence Handle10.4319/lo.1993.38.1.0225
M. J. Dadswell R. Bradford A. H. Leim D. J. Scarratt D. G. Melvin R. G. Appy (1984) ArticleTitleA review of research on fishes and fisheries in the Bay of Fundy between 1976 and 1983 with particular reference to its upper reaches Canadian Technical Report of Fisheries and Aquatic Sciences 1256 163–294
T. H. DeWitt J. S. Levinton (1985) ArticleTitleDisturbance, emigration, and refugia: how the mud snail, Ilyanassa obsoleta (Say), affects the habitat distribution of an epifaunal amphipod, Microdeutopus gryllotalpa (Costa) Journal of Experimental Marine Biology and Ecology 92 97–113 Occurrence Handle10.1016/0022-0981(85)90024-3
D. O. Duggins C. A. Simenstad J. A. Estes (1989) ArticleTitleMagnification of secondary production by kelp detritus in coastal marine ecosystems Science 245 170–173 Occurrence Handle17787876
R. Dunn L. S. Mullineaux S. W. Mills (1999) ArticleTitleResuspension of postlarval soft-shell clams Mya arenaria through disturbance by the mud snail Ilyanassa obsoleta Marine Ecology Progress Series 180 223–232
A. D. Eaton L. S. Clesceri A. E. Greenberg (Eds) (1995) Standard Methods for the Examination of Water and Wastewater EditionNumber19 American Public Health Association Washington, DC, USA
J. M. Elliot (1977) Some Methods for the Statistical Analysis of Samples of Benthic Invertebrates. Freshwater Biological Association Scientific Publication No. 25 Titus Wilson & Son Kendal, UK 159
J. A. Estes D. O. Duggins (1995) ArticleTitleSea otters and kelp forests in Alaska - generality and variation in a community ecological paradigm Ecological Monographs 65 75–100 Occurrence Handle10.2307/2937159
J. A. Estes J. F. Palmisano (1974) ArticleTitleSea otters: their role in structuring nearshore communities Science 185 1058–1060 Occurrence Handle17738247
J. A. Estes N. S. Smith J. F. Palmisano (1978) ArticleTitleSea otter predation and community organization in the western Aleutian Islands, Alaska Ecology 59 822–833 Occurrence Handle10.2307/1938786
N. S. Fisher R. A. Cowdell (1982) ArticleTitleGrowth of marine planktonic diatoms on inorganic and organic nitrogen Marine Biology 72 147–155 Occurrence Handle10.1007/BF00396915
S. D. Fretwell (1977) ArticleTitleThe regulation of plant communities by the food chains exploiting them Perspectives in Biology and Medicine 20 169–185
V. Gerdol R. G. Hughes (1994a) ArticleTitleFeeding behaviour and diet of Corophium volutator in an estuary in southeastern England Marine Ecology Progress Series 114 103–108
V. Gerdol R. G. Hughes (1994b) ArticleTitleEffect of Corophium volutator on the abundance of benthic diatoms, bacteria and sediment stability in two estuaries in southeastern England Marine Ecology Progress Series 114 109–115
M. C. Gilmurray G. R. Daborn (1981) ArticleTitleFeeding relations of the Atlantic silverside Menidia menidia in the Minas Basin, Bay of Fundy Marine Ecology Progress Series 6 231–235
J. Grant U. V. Bathmann E. L. Mills (1986) ArticleTitleThe interaction between benthic diatom films and sediment transport Estuarine, Coastal and Shelf Science 23 225–238 Occurrence Handle10.1016/0272-7714(86)90056-9 Occurrence Handle1:CAS:528:DyaL28XlslOqu7Y%3D
S. E. Hagerthey E. C. Defew D. M. Paterson (2002) ArticleTitleInfluence of Corophium volutator and Hydrobia ulvae on intertidal benthic diatom assemblages under different nutrient and temperature regimes Marine Ecology Progress Series 245 47–59
N. G. Hairston F. E. Smith B. Slobodkin (1960) ArticleTitleCommunity structure, population control, and competition American Naturalist 94 421–425 Occurrence Handle10.1086/282146
D. J. Hamilton (2000) ArticleTitleDirect and indirect effects of predation by common eiders and abiotic disturbance in an intertidal community Ecological Monographs 70 21–43 Occurrence Handle10.2307/2657166
D. J. Hamilton C. D. Ankney R. C. Bailey (1994) ArticleTitlePredation of zebra mussels by diving ducks: an exclosure study Ecology 75 521–531 Occurrence Handle10.2307/1939555
D. J. Hamilton M. A. Barbeau A. W. Diamond (2003) ArticleTitleShorebirds, snails, and Corophium in the upper Bay of Fundy, Canada: predicting bird activity on intertidal mudflats Canadian Journal of Zoology 81 1358–1366 Occurrence Handle10.1139/z03-130
P. W. Hicklin (1987) ArticleTitleThe migration of shorebirds in the Bay of Fundy Wilson Bulletin 99 540–570
P. W. Hicklin P. C. Smith (1984) ArticleTitleSelection of foraging sites and invertebrate prey by migrant Semipalmated Sandpipers, Calidris pusilla (Pallas), in the Minas Basin, Bay of Fundy Canadian Journal of Zoology 62 2201–2210 Occurrence Handle10.1139/z84-321
L. W. Hulberg J. S. Oliver (1980) ArticleTitleCaging manipulations in marine soft-bottom communities: importance of animal interactions or sedimentary habitat modifications Canadian Journal of Fisheries and Aquatic Sciences 37 1130–1139 Occurrence Handle10.1139/f80-145
J. H. Hunt W. G. Ambrose SuffixJr. C. H. Peterson (1987) ArticleTitleEffects of the gastropod, Ilyanassa obsoleta (Say), and the bivalve, Mercenaria mercenaria (L.), on larval settlement and juvenile recruitment of infauna Journal of Experimental Marine Biology and Ecology 108 229–240 Occurrence Handle10.1016/0022-0981(87)90087-6
M. D. Hunter P. W. Price (1992) ArticleTitlePlaying chutes and ladders: heterogeneity and the relative roles of bottom–up and top–down forces in natural communities Ecology 73 724–732
K. T. Jensen C. André (1993) ArticleTitleField and laboratory experiments on interactions among an infaunal polychaete, Neires diversicolor, and two amphipods, Corophium volutator & C. arenium: effects on survival, recruitment and migration Journal of Experimental Marine Biology and Ecology 168 259–278 Occurrence Handle10.1016/0022-0981(93)90264-O
G. Keppel (1982) Design and Analysis: a Researcher’s Handbook. Second Edition Prentice-Hall, Englewood Cliffs New Jersey, USA 669
J. Limia D. Raffaelli (1997) ArticleTitleThe effects of burrowing by the amphipod Corophium volutator on the ecology of intertidal sediments Journal of the Marine Biological Association of the United Kingdom 77 409–423 Occurrence Handle10.1017/S0025315400071769
D. R. Lindberg J. A. Estes K. I. Warheit (1998) ArticleTitleHuman influences on trophic cascades along rocky shores Ecological Applications 8 880–890 Occurrence Handle10.2307/2641274
C. P. Marsh (1986a) ArticleTitleRocky intertidal community organization: the impact of avian predators on mussel recruitment Ecology 67 771–786 Occurrence Handle10.2307/1937700
C. P. Marsh (1986b) ArticleTitleImpact of avian predators on high intertidal limpet populations Journal of Experimental Marine Biology and Ecology 104 185–201 Occurrence Handle10.1016/0022-0981(86)90104-8
S. L. Matthews J. S. Boates S. J. Walde (1992) ArticleTitleShorebird predation may cause discrete generations in an amphipod prey Ecography 15 393–400 Occurrence Handle10.1111/j.1600-0587.1992.tb00049.x
D. G. McCurdy J. S. Boates M. R. Forbes (1997) ArticleTitleDiurnal and nocturnal foraging by Semipalmated Sandpipers Calidris pusilla Journal of Avian Biology 28 353–356
D. G. McCurdy J. S. Boates M. R. Forbes (2000) ArticleTitleSpatial distribution of the intertidal snail Ilyanassa obsoleta in relation to parasitism by two species of trematodes Canadian Journal of Zoology 78 1137–1143 Occurrence Handle10.1139/cjz-78-7-1137
D. G. McCurdy M. R. Forbes J. S. Boates (1999a) ArticleTitleEvidence that the parasitic nematode Skrjabinoclava manipulates host Corophium behavior to increase transmission to the sandpiper, Calidris pusilla Behavioural Ecology 10 351–357 Occurrence Handle10.1093/beheco/10.4.351
D. G. McCurdy M. R. Forbes J. S. Boates (1999b) ArticleTitleTesting alternative hypotheses for variation in amphipod behaviour and life history in relation to parasitism International Journal for Parasitology 29 1001–1009 Occurrence Handle10.1016/S0020-7519(99)00067-3 Occurrence Handle1:STN:280:DyaK1MvivFOiug%3D%3D
D. J. McQueen M. R. S. Johannes J. R. Post (1989) ArticleTitleBottom–up and top–down impacts on freshwater pelagic community structure Ecological Monographs 59 289–309 Occurrence Handle10.2307/1942603
D. J. McQueen J. R. Post E. L. Mills (1986) ArticleTitleTrophic relationships in freshwater pelagic ecosystems Canadian Journal of Fisheries and Aquatic Sciences 43 1571–1581 Occurrence Handle10.1139/f86-195
P. S. Meadows (1964) ArticleTitleExperiments on substrate selection by Corophium volutator (Pallas): depth selection and population density Journal of Experimental Biology 41 677–687
R. J. Meese (1993) ArticleTitleEffects of predation by birds on gooseneck barnacle Pollicipes polymerus Sowerby distribution and abundance Journal of Experimental Marine Biology and Ecology 166 47–64 Occurrence Handle10.1016/0022-0981(93)90078-3
B. A. Menge (1992) ArticleTitleCommunity regulation: under what conditions are bottom–up factors important on rocky shores? Ecology 73 755–765 Occurrence Handle10.2307/1940155
B. A. Menge (1995) ArticleTitleIndirect effects in marine rocky intertidal interaction webs: patterns and importance Ecological Monographs 65 21–74 Occurrence Handle10.2307/2937158
B. A. Menge (1997) ArticleTitleDetection of direct versus indirect effects: were experiments long enough? American Naturalist 149 801–823 Occurrence Handle10.1086/286025 Occurrence Handle18811250 Occurrence Handle1:STN:280:DC%2BD1cnit1Ogsw%3D%3D
B. A. Menge B. A. Daley P. A. Wheeler E. Dahlhoff E. Sanford P. T. Strub (1997) ArticleTitleBenthic-pelagic links and rocky intertidal communities: bottom–up effects on top–down control? Proceedings of the National Academy of Sciences of the United States of America 94 14530–14535 Occurrence Handle9405647 Occurrence Handle10.1073/pnas.94.26.14530 Occurrence Handle1:CAS:528:DyaK1cXislaitQ%3D%3D
B. A. Menge B. A. Daley J. Lubchenco E. Sanford E. Dahlhoff P. M. Halpin G. Hudson J. L. Burnaford (1999) ArticleTitleTop–down and bottom–up regulation of New Zealand rocky␣intertidal communities Ecological Monographs 69 297–330 Occurrence Handle10.2307/2657159
K. N. Mouritsen L. T. Mouritsen K. T. Jensen (1998) ArticleTitleChange of topography and sediment characteristics on an intertidal mud-flat following mass-mortality of the amphipod Corophium volutator Journal of the Marine Biological Association of the United Kingdom 78 1167–1180 Occurrence Handle10.1017/S0025315400044404
W. Murdock (1971) ArticleTitleThe developmental response of predators to changes in prey density Ecology 52 132–137 Occurrence Handle10.2307/1934744
S. A. Navarrete (1996) ArticleTitleVariable predation: effects of whelks on a mid-intertidal successional community Ecological Monographs 66 301–321 Occurrence Handle10.2307/2963520
S. A. Navarrete B. A. Menge (1996) ArticleTitleKeystone predation and interaction strength: interactive effects of predators on their main prey Ecological Monographs 66 409–429 Occurrence Handle10.2307/2963488
K. J. Nielsen (2001) ArticleTitleBottom–up and top–down forces in tide pools: test of a food chain model in an interacting community Ecological Monographs 71 187–217 Occurrence Handle10.2307/2657216
L. Oksanen S. D. Fretwell J. Arruda P. Niemelä (1981) ArticleTitleExploitation ecosystems in gradients of primary productivity American Naturalist 118 240–261 Occurrence Handle10.1086/283817
M. L. Pace J. J. Cole S. R. Carpenter (1998) ArticleTitleTrophic cascades and compensation: differential responses of microzooplankton in whole-lake experiments Ecology 79 138–152 Occurrence Handle10.2307/176870
M. L. Pace J. J. Cole S. R. Carpenter J. F. Kitchell (1999) ArticleTitleTrophic cascades revealed in diverse ecosystems Trends in Ecology and Evolution 14 483–488 Occurrence Handle10542455 Occurrence Handle10.1016/S0169-5347(99)01723-1
M. L. Pace S. Shimmel W. M. Darley (1979) ArticleTitleThe effect of grazing by a gastropod, Nassarius obsoletus, on the benthic microbial community of a salt marsh mudflat Estuarine and Coastal Marine Science 9 121–134 Occurrence Handle10.1016/0302-3524(79)90109-9 Occurrence Handle1:CAS:528:DyaE1MXmtVOhurw%3D
R. T. Paine (1966) ArticleTitleFood web complexity and species diversity American Naturalist 100 65–75 Occurrence Handle10.1086/282400
R. T. Paine (1974) ArticleTitleExperimental studies on the relationship between a dominant predator and its principal competitor Oecologia 15 93–120 Occurrence Handle10.1007/BF00345739
R. T. Paine (1980) ArticleTitleFood webs: linkage, interaction strength, and community infrastructure Journal of Animal Ecology 49 667–685
D. L. Peer L. E. Linkletter P. W. Hicklin (1986) ArticleTitleLife history and reproductive biology of Corophium volutator (Crustacea: Amphipoda) and the influence of shorebird predation on population structure in Chignecto Bay, Bay of Fundy, Canada Netherland Journal of Sea Research 20 359–373 Occurrence Handle10.1016/0077-7579(86)90003-7
H. Peletier (1996) ArticleTitleLong-term changes in intertidal estuarine diatom assemblages related to reduced input of organic waste Marine Ecology Progress Series 137 265–271
L. Persson (1999) ArticleTitleTrophic cascades: abiding heterogeneity and the trophic level concept at the end of the road Oikos 85 385–397
G. A. Polis (1999) ArticleTitleWhy are parts of the world green? Multiple factors control productivity and the distribution of biomass Oikos 86 3–15
G. A. Polis D. R. Strong (1996) ArticleTitleFood web complexity and community stability American Naturalist 147 813–846 Occurrence Handle10.1086/285880
L. W. Pollock (1998) A Practical Guide to the Marine Animals of Northeastern North America Rutgers University Press New Brunswick, New Jersey, USA 272
M. Posey C. Powell L. Cahoon D. Lindquis (1995) ArticleTitleTop down vs. bottom up control of benthic community composition on an intertidal mudflat Journal of Experimental Marine Biology and Ecology 185 19–31 Occurrence Handle10.1016/0022-0981(94)00127-Y
C. Potvin M. J. Lechowicz S. Tardif (1990) ArticleTitleThe statistical analysis of ecophysiological response curves obtained from experiments involving repeated measures Ecology 71 1389–1400 Occurrence Handle10.2307/1938276
R. Poulin (1999) ArticleTitleThe functional importance of parasites in animal communities: many roles at many levels International Journal for Parasitology 29 903–914 Occurrence Handle10480727 Occurrence Handle10.1016/S0020-7519(99)00045-4 Occurrence Handle1:STN:280:DyaK1MvgvVKjtg%3D%3D
M. E. Power (1992) ArticleTitleTop–down and bottom–up forces in food webs: Do plants have primacy? Ecology 73 733–746 Occurrence Handle10.2307/1940153
M. L. Quammen (1984) ArticleTitlePredation by shorebirds, fish, and crabs on invertebrates in intertidal mudflats: an experimental test Ecology 65 529–537 Occurrence Handle10.2307/1941415
D. Raffaelli H. Milne (1987) ArticleTitleAn experimental investigation of the effects of shorebird and flatfish predation on estuarine invertebrates Estuarine, Coastal and Shelf Science 24 1–13
S. M. Scheiner (1993) MANOVA: Multiple response variables and multispecies interactions S. M. Scheiner J. Gurevitch (Eds) Design and Analysis of Ecological Field Experiments Chapman and Hall New York, USA 94–112
O. J. Schmitz P. A. Hambäck A. P. Beckerman (2000) ArticleTitleTrophic cascades in terrestrial systems: a review of the effects of carnivore removals on plants American Naturalist 155 141–153 Occurrence Handle10686157 Occurrence Handle10.1086/303311
P. Schwinghamer F. C. Tan D. C. Gordon SuffixJr. (1983) ArticleTitleStable carbon isotope studies on the Pecks Cove mudflat ecosystem in the Cumberland Basin, Bay of Fundy Canadian Journal of Fisheries and Aquatic Sciences 40 IssueIDsuppl. 1 262–272
P. C. F. Shepherd J. S. Boates (1999) ArticleTitleEffects of a commercial baitworm harvest on Semipalmated Sandpipers and their prey in the Bay of Fundy Hemispheric Shorebird Reserve Conservation Biology 13 347–356 Occurrence Handle10.1046/j.1523-1739.1999.013002347.x
B. R. Silliman M. D. Bertness (2002) ArticleTitleA trophic cascade regulates salt marsh primary production Proceedings of the National Academy of Sciences of the United States of America 99 10500–10505 Occurrence Handle12149475 Occurrence Handle10.1073/pnas.162366599 Occurrence Handle1:CAS:528:DC%2BD38Xmt1Chs74%3D
D. Smith R. G. Hughes E. J. Cox (1996) ArticleTitlePredation of epipelic diatoms by the amphipod Corophium volutator and the polychaete Nereis diversicolor Marine Ecology Progress Series 145 53–61
D. R. Strong (1992) ArticleTitleAre trophic cascades all wet? Differentiation and donor-control in speciose ecosystems Ecology 73 747–754 Occurrence Handle10.2307/1940154
B. G. Tabachnick L. S. Fidell (1996) Using Multivariate Statistics EditionNumber3 Harper Collins New York, USA 880
Trites, M., 2002. Community structure and abundance of benthic diatoms in two mudflats. BSc Thesis, Mount Allison University, New Bruswick, Canada, 93
G. J. C. Underwood D. M. Paterson (1993) ArticleTitleRecovery of intertidal benthic diatoms after biocide treatment and associated sediment dynamics Journal of the Marine Biological Association of the United Kindgom 73 25–45
R. W. Virnstein (1977) ArticleTitleThe importance of predation by crabs and fishes on benthic infauna in Chesapeake Bay Ecology 58 1199–1216 Occurrence Handle10.2307/1935076
C. N. Ende Particlevon (1993) Repeated measures analysis: growth and other time-dependent measures S. M. Scheiner J. Gurevitch (Eds) Design and Analysis of Ecological Field Experiments Chapman and Hall New York, USA 113–137
W. H. Wilson SuffixJr. (1988) ArticleTitleShifting zones in a Bay of Fundy soft-sediment community: patterns and processes Ophelia 29 227–245
W. H. Wilson SuffixJr. (1989) ArticleTitlePredation and the mediation of intraspecific competition in an infaunal community in the Bay of Fundy Journal of Experimental Marine Biology and Ecology 132 221–245 Occurrence Handle10.1016/0022-0981(89)90129-9
B. J. Winer D. R. Brown K. M. Michels (1991) Statistical Principles in Experimental Design EditionNumber3 McGraw-Hill New York, USA 1057 pp
J. T. Wootton (1992) ArticleTitleIndirect effects, prey susceptibility, and habitat selection: impacts of birds on limpets and algae Ecology 73 981–991 Occurrence Handle10.2307/1940174
J. T. Wootton (1994) ArticleTitleThe nature and consequences of indirect effects in ecological communities Annual Review of Ecology and Systematics 25 443–466 Occurrence Handle10.1146/annurev.es.25.110194.002303
J. T. Wootton (1995) ArticleTitleEffects of birds on sea urchins and algae: a lower-intertidal trophic cascade Ecoscience 2 321–328
J. T. Wootton (1997) ArticleTitleEstimates and tests of per capita interaction strength: diet, abundance, and impact of intertidally foraging birds Ecological Monographs 67 45–64 Occurrence Handle10.2307/2963504
P. Yodzis (1988) ArticleTitleThe indeterminacy of ecological interactions as perceived through perturbation experiments Ecology 69 508–515 Occurrence Handle10.2307/1940449
J. H. Zar (1999) Biostatistical Analysis EditionNumber4 Prentice Hall Upper Saddle River, New Jersey 663
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Hamilton, D.J., Diamond, A.W. & Wells, P.G. Shorebirds, snails, and the amphipod (Corophium volutator) in the upper Bay of Fundy: top–down vs. bottom–up factors, and the influence of compensatory interactions on mudflat ecology. Hydrobiologia 567, 285–306 (2006). https://doi.org/10.1007/s10750-006-0062-y
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DOI: https://doi.org/10.1007/s10750-006-0062-y