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    <title>UTas ePrints - Predicting global dynamics from local interactions: individual-based models predict complex features of marine epibenthic communities</title>
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    <meta content="Dunstan, Piers K." name="eprints.creators_name" />
<meta content="Johnson, Craig R." name="eprints.creators_name" />
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<meta content="Predicting global dynamics from local interactions: individual-based models predict complex features of marine
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<meta content="Spatial individual-based model; Emergent dynamics; Community variability; Predictive model; Marine epibenthic" name="eprints.keywords" />
<meta content="Spatially explicit community models often generate a wide range of complex dynamics and behaviours, but the predictions
of community structure and dynamics from many of these models are rarely compared with the natural communities they are
intended to represent. Here, we develop a spatially explicit individual-based model of a complex marine epibenthic community
and test its ability to predict the dynamics and structure of the natural community on which the model is based. We studied
a natural epibenthic community on small-scale patches of jetty wall to estimate the outcomes of pair-wise interactions among
individuals of different species, neighbour-specific growth rates, and species-specific recruitment and mortality rates. The model
is defined with rules acting at two spatial scales: (1) between individual cells on the spatial landscape that define the nature of
interactions, growth and recruitment at a scale of 1 cm2, and (2) at the scale of whole colonies (blocks of contiguous cells) that
define size-specific mortality and limitations to the maximum size of colonies for some species for scales up to 1000 cm2. The
model is compared to the existing patches on the jetty wall and proves to be a good descriptor of the large range of possible
communities on the jetty, and of the multivariate variances of the patches. The high variability in community structure predicted
by the model, which is similar to that observed in the natural community, arises from observed variability in parameters of
interaction outcomes, growth, recruitment, and mortality of each species. Thus if the processes we modelled operate similarly
in nature, our results suggest that it is difficult to attempt to predict the precise trajectory of the community in a particular patch.
Our results show that it is possible to develop a testable, predictive spatial model where the patch-scale community patterns of
structure and dynamics are emergent, arising from local processes between colonies and species-specific demography." name="eprints.abstract" />
<meta content="2005" name="eprints.date" />
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<meta content="Barnes, D.K.A., Dick, M.H., 2000. Overgrowth competition in encrusting
bryozoan assemblages of the intertidal and infralittoral
zones of Alaska. Mar. Biol. 136, 813–822.
Berec, L., 2002. Techniques of spatially explicit individual-based
models: construction, simulation, and mean-field analysis. Ecol.
Model. 150, 55–81.
Buss, L.W., 1979. Bryozoan overgrowth interactions—the interdependence
of competition for space and food. Nature 281,
475–477.
Buss, L.W., 1990. Competition within and between encrusting clonal
invertebrates. TREE 5 (11), 352–356.
Buss, L.W., Jackson, J.B.C., 1979. Competitive networks: nontransitive
competitive relationships in cryptic coral reef environments.
Am. Nat. 113 (2), 223–234.
Danilowicz, B.S., Sale, P.F., 1999. Modelling settlement in open populations
of reef fishes. Ecol. Model. 121, 261–276.
Dunstan, P.K., Johnson, C.R., 2003. Competition coefficients in a
marine epibenthic assemblage depend on spatial structure. Oikos
100, 79–88.
Dunstan, P.K., Johnson, C.R., 2004. Invasion rates increase with
species richness in a marine epibenthic community by two mechanisms.
Oecologia 138, 285–292.
Durrett, R., Levin, S.A., 1994. The importance of being discrete (and
spatial). Theo. Popul. Biol. 46, 363–394.
Goreaud, F., Loreau, M., Miller, C., 2002. Spatial structure and the
survival of an inferior competitor: a theoretical model of neighbourhood
competition in plants. Ecol. Model. 158, 1–19.
Grimm, V., 1999. Ten years of individual-based modelling in ecology:
what have we learned and what could we learn in the future.
Ecol. Model. 115, 129–148.
Grosberg, R.K., 1981. Competitive ability influences habitat choice
in marine invertebrates. Nature 290, 700–702.
Herben, T., During, H.J., Law, R., 2000. Spatio-temporal patterns
in grassland communities. In: Dieckmann, U., Law, R., Metz,
J.A.J. (Eds.), The Geometry of Ecological Interactions. Cambridge
University Press, Cambridge, UK, pp. 48–64.
Hughes, T.P., 1990. Recruitment limitation, mortality, and population
regulation in open systems: a case study. Ecology 71 (1),
12–20.
Hughes, T.P., Jackson, J.B.C., 1980. Do corals lie about their age?
Some demographic consequences of partial mortality, fission,
and fusion. Science 209, 713–715.
Hurlbut, C.J., 1991. Larval substratum selection and postsettlement
mortality as determinates of the distribution of two bryozoans. J.
Exp. Mar. Biol. Ecol. 147, 103–119.
Ives, A.R., Gross, K., Klug, J.L., 1999. Stability and variability in
competitive communities. Science 286, 542–544.
Jackson, J.B.C., 1977. Competition on marine hard substrata: the
adaptive significance of solitary and colonial strategies. Am. Nat.
111, 743–767.
Jackson, J.B.C., 1979. Overgrowth competition between encrusting
cheilostome ectoprocts in a Jamaican cryptic reef environment.
J. Anim. Ecol. 48, 805–823.
Jackson, J.B.C., Buss, L.W., 1975. Allelopathy and spatial competition
among coral reef invertebrates. Proc. Natl. Acad. Sci. U.S.A.
72 (12), 5160–5163.
Jackson, J.B.C., Winston, J.E., 1982. Ecology of cryptic reef communities.
I. Distribution and abundance of major groups of encrusting
organisms. J. Exp. Mar. Biol. Ecol. 57, 135–147.
Johnson, C.R., 1997. Self-organising in spatial competition systems.
In: Klomp, N., Lunt, I. (Eds.), Frontiers in Ecology. Elsevier,
Oxford, pp. 245–263.
Johnson, C.R., Boerlijst, M.C., 2002. Selection at the level of the
community: the importance of spatial structure. Trends Ecol.
Evol. 17, 83–90.
Johnson, C.R., Seinen, I., 2002. Selection for restraint in competitive
ability in spatial competition systems. Proc. R. Soc. B 269,
655–663.
Keough, M.J., Downes, B.J., 1982. Recruitment of marine invertebrates:
the role of active larval choices and early mortality.
Oecologia 54, 348–353.
Law, R., Dieckmann, U., 2000. A dynamical system for neighbourhoods
in plant communities. Ecology 81 (8), 2137–2148.
Levin, S.A., 1992. The problem of pattern and scale in ecology.
Ecology 73 (6), 1942–1967.
Lopez Gappa, J.J., 1989. Overgrowth competition in an assemblage
of encrusting bryozoans settled on artificial substrata. Mar. Ecol.
Prog. Ser. 51, 120–121.
Lotka, A.J., 1925. Elements of Physical Biology. Williams and
Wilkins, Baltimore, MD.
May, R.M., 1974. Stability and Complexity in Model Ecosystems.
Princeton University Press, Princeton, NJ, USA.
MacArthur, R.H., Wilson, E.O., 1967. The Theory of Island Biogeography.
Princeton University Press, Princeton, NJ, USA.
Mitchell, M.S., Powell, R.A., 2004.Amechanistic home range model
for optimal use of spatially distributed resources. Ecol. Model.
177, 209–232.
Molofsky, J., Durrett, R., Dushoff, J., Griffeath, D., Levin, S.,
1999. Local frequency dependence and global coexistence. Theo.
Popul. Biol. 55, 270–282.
Nandakumar, K., Tanaka, M., Kikuchi, T., 1993. Interspecific competition
among fouling organisms in Tomioka Bay, Japan. Mar.
Ecol. Prog. Ser. 94, 43–50.
Okamura, B., 1992. Microhabitat variation and patterns of colony
growth and feeding in a marine bryozoan. Ecology 73 (4),
1502–1513.
Osman, R.W., Whitlatch, R.B., 1995. The influence of resident adults
on recruitment: a comparison to settlement. J. Exp. Mar. Biol.
Ecol. 190, 169–198.
Rubin, J.A., 1982. The degree of intransitivity and its measurement
in an assemblage of encrusting cheilostome bryozoa. J. Exp. Mar.
Biol. Ecol. 60, 119–128.
Russ, G.R., 1980. Effects of predation by fishes, competition, and
structural complexity of the substratum on the establishment
of a marine epifaunal community. J. Exp. Mar. Biol. Ecol. 42,
55–69.
Silvertown, J., Holtier, S., Johnson, J., Dale, P., 1992. Cellular automaton
models of interspecific competition for space—the effect
of pattern on process. J. Ecol. 80, 527–534.
Silvertown, J.,Wilson, J.B., 2000. Spatial interactions among grassland
plant populations. In: Dieckmann, U., Law, R., Metz, J.A.J.
(Eds.), The Geometry of Ecological Interactions: Simplifying
Spatial Complexity. Cambridge University Press, Cambridge, pp.
28–47.
Tews, J., Moloney, K., Jeltsch, F., 2004. Modelling seed dispersal in
a variable environment: a case study of the fleshy-fruited savanna
shrub Grewia flava. Ecol. Model. 175, 65–76.
Tilman, D., 1994. Competition and diversity in spatially structured
habitats. Ecology 75 (1), 2–16.
Uchmanski, J., 2000. Resource partitioning among competing individuals
and population persistence: an individual-based model.
Ecol. Model. 131, 21–32.
Wiegand, K., Jeltsch, F., Ward, D., 2004. Minimum recruitment
frequency in plants with episodic recruitment. Oecologia 141,
363–372.
Wiegand, K.,Ward, D., Thulke, H., Jeltsch, F., 2000. From snapshot
information to long-term population dynamics of Acacias by a
simulation model. Plant Ecol. 150, 97–114.
Wootton, J.T., 2000. Prediction in complex communities: analysis
of empirically derived markov models. Ecology 82 (2), 580–
598.
Wootton, J.T., 2001. Local interactions predict large-scale pattern in
empirically derived cellular automata. Nature 413, 841–844." name="eprints.referencetext" />
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<meta content="270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)" name="DC.subject" />
<meta content="Spatially explicit community models often generate a wide range of complex dynamics and behaviours, but the predictions
of community structure and dynamics from many of these models are rarely compared with the natural communities they are
intended to represent. Here, we develop a spatially explicit individual-based model of a complex marine epibenthic community
and test its ability to predict the dynamics and structure of the natural community on which the model is based. We studied
a natural epibenthic community on small-scale patches of jetty wall to estimate the outcomes of pair-wise interactions among
individuals of different species, neighbour-specific growth rates, and species-specific recruitment and mortality rates. The model
is defined with rules acting at two spatial scales: (1) between individual cells on the spatial landscape that define the nature of
interactions, growth and recruitment at a scale of 1 cm2, and (2) at the scale of whole colonies (blocks of contiguous cells) that
define size-specific mortality and limitations to the maximum size of colonies for some species for scales up to 1000 cm2. The
model is compared to the existing patches on the jetty wall and proves to be a good descriptor of the large range of possible
communities on the jetty, and of the multivariate variances of the patches. The high variability in community structure predicted
by the model, which is similar to that observed in the natural community, arises from observed variability in parameters of
interaction outcomes, growth, recruitment, and mortality of each species. Thus if the processes we modelled operate similarly
in nature, our results suggest that it is difficult to attempt to predict the precise trajectory of the community in a particular patch.
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    <h1 class="ep_tm_pagetitle">Predicting global dynamics from local interactions: individual-based models predict complex features of marine epibenthic communities</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Dunstan, Piers K.</span> and <span class="person_name">Johnson, Craig R.</span> (2005) <xhtml:em>Predicting global dynamics from local interactions: individual-based models predict complex features of marine epibenthic communities.</xhtml:em> Ecological Modelling, 186 (2). pp. 221-233. ISSN 0304-3800</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1037/1/2005_Dunstan_%26_Johnson_Ecol_Modelling.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1037/1/2005_Dunstan_%26_Johnson_Ecol_Modelling.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />177Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="1200" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1016/j.ecolmodel.2005.01.016">http://dx.doi.org/10.1016/j.ecolmodel.2005.01.016</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Spatially explicit community models often generate a wide range of complex dynamics and behaviours, but the predictions&#13;
of community structure and dynamics from many of these models are rarely compared with the natural communities they are&#13;
intended to represent. Here, we develop a spatially explicit individual-based model of a complex marine epibenthic community&#13;
and test its ability to predict the dynamics and structure of the natural community on which the model is based. We studied&#13;
a natural epibenthic community on small-scale patches of jetty wall to estimate the outcomes of pair-wise interactions among&#13;
individuals of different species, neighbour-specific growth rates, and species-specific recruitment and mortality rates. The model&#13;
is defined with rules acting at two spatial scales: (1) between individual cells on the spatial landscape that define the nature of&#13;
interactions, growth and recruitment at a scale of 1 cm2, and (2) at the scale of whole colonies (blocks of contiguous cells) that&#13;
define size-specific mortality and limitations to the maximum size of colonies for some species for scales up to 1000 cm2. The&#13;
model is compared to the existing patches on the jetty wall and proves to be a good descriptor of the large range of possible&#13;
communities on the jetty, and of the multivariate variances of the patches. The high variability in community structure predicted&#13;
by the model, which is similar to that observed in the natural community, arises from observed variability in parameters of&#13;
interaction outcomes, growth, recruitment, and mortality of each species. Thus if the processes we modelled operate similarly&#13;
in nature, our results suggest that it is difficult to attempt to predict the precise trajectory of the community in a particular patch.&#13;
Our results show that it is possible to develop a testable, predictive spatial model where the patch-scale community patterns of&#13;
structure and dynamics are emergent, arising from local processes between colonies and species-specific demography.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Spatial individual-based model; Emergent dynamics; Community variability; Predictive model; Marine epibenthic</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270702.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1037</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Professor Craig R. Johnson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">17 May 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">04 Feb 2008 16:19</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1037;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=1037">item control page</a></p>
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