Complex species interactions and the dynamics of ecological systems: long-term experiments.

Studies that combine experimental manipulations with long-term data collection reveal elaborate interactions among species that affect the structure and dynamics of ecosystems. Research programs in U.S. desert shrubland and pinyon-juniper woodland have shown that (i) complex dynamics of species populations reflect interactions with other organisms and fluctuating climate; (ii) genotype x environment interactions affect responses of species to environmental change; (iii) herbivore-resistance traits of dominant plant species and impacts of "keystone" animal species cascade through the system to affect many organisms and ecosystem processes; and (iv) some environmental perturbations can cause wholesale reorganization of ecosystems because they exceed the ecological tolerances of dominant or keystone species, whereas other changes may be buffered because of the compensatory dynamics of complementary species.

[1]  O. Reichman,et al.  Ecological and Mycological Characteristics of Caches in the Mounds of Dipodomys spectabilis , 1985 .

[2]  Joseph H. Connell,et al.  On the Prevalence and Relative Importance of Interspecific Competition: Evidence from Field Experiments , 1983, The American Naturalist.

[3]  N. Cobb,et al.  TREE-RING VARIATION IN PINYON PREDICTS LIKELIHOOD OF DEATH FOLLOWING SEVERE DROUGHT , 2000 .

[4]  TJ Valone,et al.  Effects of competition, colonization, and extinction on rodent species diversity , 1995, Science.

[5]  J. Graham,et al.  Functioning of mycorrhizal associations along the mutualism–parasitism continuum* , 1997 .

[6]  James H. Brown,et al.  Long‐Term Experimental Study of a Chihuahuan Desert Rodent Community: 13 Years of Competition , 1994 .

[7]  B. Walker.  Biodiversity and Ecological Redundancy , 1992 .

[8]  Russell P. Balda,et al.  Coadaptations of the Clark's nutcracker and the pinon pine for efficient seed harvest and dispersal. , 1977 .

[9]  E. F. Aldon,et al.  Managing pinon-juniper ecosystems for sustainability and social needs. Forest Service general technical report (Final) , 1993 .

[10]  James H. Brown,et al.  CATASTROPHIC DECLINE OF A DESERT RODENT, DIPODOMYS SPECTABILIS: INSIGHTS FROM A LONG-TERM STUDY , 1995 .

[11]  P. Keim,et al.  Ectomycorrhizal fungal community structure of pinyon pines growing in two environmental extremes , 1998 .

[12]  T. Whitham,et al.  Herbivore-driven mycorrhizal mutualism in insect-susceptible pinyon pine , 1991, Nature.

[13]  S. Ernest,et al.  Rodents, plants, and precipitation: spatial and temporal dynamics of consumers and resources , 2000 .

[14]  T. Whitham,et al.  Impact of insect herbivores on competition between birds and mammals for pinyon pine seeds , 1993 .

[15]  J. C. Beatley.  Dependence of Desert Rodents on Winter Annuals and Precipitation , 1969 .

[16]  Thomas W. Schoener,et al.  Field Experiments on Interspecific Competition , 1983, The American Naturalist.

[17]  S. Ernest,et al.  Delayed compensation for missing keystone species by colonization. , 2001, Science.

[18]  J. Garbaye.  Tansley Review No. 76 Helper bacteria: a new dimension to the mycorrhizal symbiosis. , 1994, The New phytologist.

[19]  P. Nicoletto,et al.  Kangaroo rat burrows structure the spatial organization of ground-dwelling animals in a semiarid grassland , 1992 .

[20]  N. Cobb,et al.  Increased moth herbivory associated with environmental stress of pinyon pine at local and regional levels , 1997, Oecologia.

[21]  Daniel Simberloff,et al.  Ecological Communities: Conceptual Issues and the Evidence , 1984 .

[22]  N. Cobb,et al.  GENETIC DIFFERENTIATION AND HETEROZYGOSITY IN PINYON PINE ASSOCIATED WITH RESISTANCE TO HERBIVORY AND ENVIRONMENTAL STRESS , 1991, Evolution; international journal of organic evolution.

[23]  D. Read,et al.  THE ROLE OF PROTEINS IN THE NITROGEN NUTRITION OF ECTOMYCORRHIZAL PLANTS. I. UTILIZATION OF PEPTIDES AND PROTEINS BY ECTOMYCORRHIZAL FUNGI , 1986 .

[24]  T. Whitham,et al.  Comparisons of ectomycorrhizae on pinyon pines (Pinus edulis; Pinaceae) across extremes of soil type and herbivory , 1994 .

[25]  M. Rosenzweig.  Habitat Selection Experiments with a Pair of Coexisting Heteromyid Rodent Species , 1973 .

[26]  N. Cobb,et al.  Three‐Way Interactions Among Ectomycorrhizal Mutualists, Scale Insects, and Resistant and Susceptible Pinyon Pines , 1997, The American Naturalist.

[27]  N. Cobb,et al.  Negative effects of scale insect herbivory on the ectomycorrhizae of juvenile pinyon pine , 1993 .

[28]  C. Allen,et al.  Drought-induced shift of a forest-woodland ecotone: rapid landscape response to climate variation. , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[29]  W. Whitford.  Temporal Fluctuations in Density and Diversity of Desert Rodent Populations , 1976 .

[30]  J. Lawton,et al.  Linking Species and Ecosystems , 1996 .

[31]  C. Kuske,et al.  Phylogeny, ribosomal RNA gene typing and relative abundance of new Pseudomonas species (sensu stricto) isolated from two pinyon-juniper woodland soils of the arid southwest U.S. , 1999, Systematic and applied microbiology.

[32]  Stephen R. Carpenter,et al.  Complex Interactions in Lake Communities , 2011, Springer New York.

[33]  J. Lawton,et al.  Declining biodiversity can alter the performance of ecosystems , 1994, Nature.

[34]  P. Keim,et al.  PLANT HYBRID ZONES AFFECT BIODIVERSITY: TOOLS FOR A GENETIC‐BASED UNDERSTANDING OF COMMUNITY STRUCTURE , 1999 .

[35]  James H. Brown,et al.  Reorganization of an arid ecosystem in response to recent climate change. , 1997, Proceedings of the National Academy of Sciences of the United States of America.

[36]  Peter A. Abrams,et al.  Arguments in Favor of Higher Order Interactions , 1983, The American Naturalist.

[37]  Fabian M Jaksic,et al.  Heterogeneous Responses of Small Mammals to an El Niño Southern Oscillation Event in Northcentral Semiarid Chile and the Importance of Ecological Scale , 1995 .

[38]  T. Whitham,et al.  Duration of Herbivore Removal and Environmental Stress Affect the Ectomycorrhizae of Pinyon Pines , 1995 .

[39]  G. F. Gause.  The struggle for existence , 1971 .

[40]  H. O. Hill,et al.  A Population Study of Irradiated Desert Rodents , 1974 .

[41]  Mauricio Lima,et al.  El Niño–Southern Oscillation–Driven Rainfall Variability and Delayed Density Dependence Cause Rodent Outbreaks in Western South America: Linking Demography and Population Dynamics , 1999, The American Naturalist.

[42]  B. Potts,et al.  PLANT GENETICS AFFECTS ARTHROPOD COMMUNITY RICHNESS AND COMPOSITION: EVIDENCE FROM A SYNTHETIC EUCALYPT HYBRID POPULATION , 2000, Evolution; international journal of organic evolution.

[43]  David A. Wardle,et al.  Biodiversity and Plant Litter: Experimental Evidence Which Does Not Support the View That Enhanced Species Richness Improves Ecosystem Function , 1997 .

[44]  Fabian M Jaksic,et al.  A long-term study of vertebrate predator responses to an El Nino (ENSO) disturbance in western South America , 1997 .

[45]  Shahid Naeem,et al.  Biodiversity enhances ecosystem reliability , 1997, Nature.

[46]  P. Yodzis.  The Indeterminacy of Ecological Interactions as Perceived Through Perturbation Experiments , 1988 .

[47]  L. Pierson,et al.  Phenazine antibiotic production in Pseudomonas aureofaciens: role in rhizosphere ecology and pathogen suppression , 1996 .

[48]  S. B. Wall.  Dispersal of singleleaf pinon pine (Pinus monophylla) by seed-caching rodents , 1997 .