The Kaspari Lab
Mike’s Favorites:
Papers are stories with backstories. Here are a handful of mine that I really like, and a little about why.
Kaspari M and A Joern (1993) Prey choice in three grassland birds: reevaluating opportunism. Oikos 68:414-430
In the late 70s and early 80s John Wiens and John Rotenberry wrote an influential set of papers suggesting grassland birds ate pretty much whatever they encountered. After spending much of the early 80’s watching birds and catching bugs in the Sandhills, Tony and I rebutted that notion.
Kaspari M & M Byrne (1995) Caste allocation in litter Pheidole: lessons from plant defense theory. Behavioral Ecology and Sociobiology 37:255-263
The first paper on my favorite genus, and one that tried to extend theory from another field to my new favorite taxon: ants. Note to self: if you want myrmecologists to read a paper, make sure the word “ants” is in the title.
Kaspari M, S. O’Donnell, & L Alonso (2000) Three energy variables predict ant abundance at a geographic scale. Proc of the Royal Society B 267:485-490
The first paper out of our “49 ant communities” project that established what was to be our lab’s modus operandi: test theory on a geographic scale by going into the field and collecting the data.
Yanoviak, S & M Kaspari (2000) Community structure and the habitat templet: ants in the tropical forest canopy and litter. Oikos 89:259-266
The first in a long productive collaboration with Steve Yanoviak that started us integrating the physical structure of the environment and stoichiometry of ant and food supply to predict how ant communities behave.
Kaspari M, M Yuan, & L Alonso. (2003) Spatial grain and gradients of ant species richness. American Naturalist 161: 459-477
Evaluating the big biogeographic hypotheses of the day with hard-won data.
Kaspari M. (2008) Knowing your warblers: thoughts on the 50th anniversary of MacArthur (1958). Bulletin of the Ecology Society of America
How often do you get to honor an academic grandfather and present to the world a piece of art that captures the idea of MacArthur’s Warblers? Debby Kaspari’s illustration is now used to teach MacArthur’s work all over the world.
Kaspari, M, S Yanoviak, R Dudley. (2008) On the biogeography of salt limitation: a study of ant communities. PNAS 105: 17848-17851
When those ants began to swarm our NaCl baits it was one of the most exciting things I had ever seen. The trio of Dudley, Kaspari, and Yanoviak have always managed to combine travel to interesting places with unexpected discovery. All our salt work started with this one.
Kaspari, M, Clay NA, Donoso D, Yanoviak SP. (2014) Sodium fertilization increases termites and enhances decomposition in an Amazonian forest. Ecology 95: 795–800.
The salt saga continues. Natalie Clay and David Donoso supervised a year-long experiment in the Yasuni preserve in Ecuador, applying artificial rainfall to some 4x4m plots that duplicated the concentration of sodium you might find in a Carribean Island. A concentration below that perceptible by a human tongue (mine anyways). Wood blocks set in the plot from 3 different species of tree decomposed up to 70% faster on +sodium plots–suggesting that salt starvation is keeping a lot of carbon detritus as detritus and out of the atmosphere.
Kaspari, M, NA Clay, J Lucas, SP Yanoviak, A Kay. (2015) Thermal adaptation generates a diversity of thermal limits in a rainforest ant community. Global Change Biology.
Taking advantage of the diversity of ants on Barro Colorado Island, we show that the diversity of thermal limits in this one community exceeds most of the variation found world-wide, in part because tropical canopies and the forest floor 30m are so thermally distinct.
K Roeder, M Kaspari (2017) From cryptic herbivore to predator: stable isotopes reveal consistent variability in trophic levels in an ant population. Ecology 98:297-303.
Karl set out to compare stable isotope signatures of minors and majors in the imported fire ant Solenopsis invicta, and finds colonies spanning three trophic levels in a little patch of old field! Like our thermal diversity paper, more evidence that individual communities, and sometimes single populations, maintain enormous niche diversity in one place.
Prather, RM, KA Roeder, NJ Sanders, M Kaspari (2018) Using metabolic and thermal ecology to predict temperature dependent ecosystem activity: a test with prairie ants. Ecology 99:2113-2121.
Rebecca’s first paper from the lab clearly shows the accelerating demand for sodium, but not sugar, as temperatures increase. Moreover, how you measure temperature is key: soil and surface temperatures both contribute to ant activity: soil temperatures set the nutritional demands of the colonies; surface temperatures set the upper limit they can forage.
Welti, EAR, NJ Sanders, KM deBeurs, M Kaspari (2019) A distributed experiment demonstrates widespread sodium limitation in grassland food webs. Ecology 100:e02600 see also The Bulletin of the Ecological Society of America 2019-04 DOI: 10.1002/bes2.1509
Dr. Ellen Welti’s first contribution to the lab, from the most productive field season we have ever had. Across 54 grasslands, using a simple sodium pulse experiment, we show that sodium patches like you would see from a splash of Bison urine demonstrate widespread sodium limitation. Geographical Ecology at its finest.
Welti, EAR, KA Roeder, KM de Beurs, A Joern, M Kaspari. (2020) Nutrient dilution and climate cycles underlie declines in a dominant insect herbivore.—Proceedings of the National Academy of Science USA 117-7271-7275.
Grasshoppers at Konza LTER have been declining by over 2% a year, and Nutrient Dilution (the decrease in elemental concentrations of plant tissue when NPP increases soil biogeochemistry is constant) is likely to blame. The first link of an important–and scary–biogeochemical phenomenon of the Anthropocene to Insect Declines. As of this writing, reviews of Insect Declines don’t even recognize it. They will.
2020
Bujan, J, K Roeder, KM de Beurs, M Weiser, M Kaspari. Thermal Diversity of North American ant communities: Cold tolerance but not heat tolerance tracks ecosystems temperature. Global Ecology and Biogeography 29:1486-1494
O’Donnell, S, J Lattke, S Powell, M Kaspari. (in press) Diurnal and nocturnal foraging specialization in Neotropical army ants Ecological Entomology DOI: 10.1111/een.12969
Peterson, T, E A R Welti, M Kaspari. (in press) Dietary sodium levels affect grasshopper growth and performance. Ecosphere. See Also Salt of life: High sodium diets produce longer-jumping, smaller grasshoppers” by Peterson, Taylor, Welti, Ellen, Kaspari, Michael in Bulletin of the Ecology Society of America
Blair, J., Weiser, M.D., Kaspari, M., Miller, M., Siler, C. & K, M. (2020). Robust and simplified machine learning identification of pitfall trap‐collected ground beetles at the continental scale—Ecology and Evolution 10:13143-13153.
Prather, RM, K Castillioni, M Kaspari, L Souza, C M Prather, R W Reihart, E A R Welti. (in press) Micronutrients enhance macronutrient effects in a meta-analysis of grassland arthropod abundances.—Global Ecology and Biogeography
Welti, EAR, RM Prather, NJ Sanders, KM de Beurs, M Kaspari (2020) Bottom-up when it is not top-down: Predators and plants control biomass of grassland arthropods.—Journal of Animal Ecology 89:1286-1294.
Kaspari, M. (2020) The seventh macronutrient: how sodium shortfall ramifies through populations, food webs, and ecosystems.—Ecology Letters 23:1153-1168.
Welti, EAR, KA Roeder, KM de Beurs, A Joern, M Kaspari. (2020) Nutrient dilution and climate cycles underlie declines in a dominant insect herbivore.—Proceedings of the National Academy of Science USA 117-7271-7275.
See Also Pennisi, E. (2020). Carbon dioxide increase may promote ‘insect apocalypse’. Science 368: 459.
Prather, RM, K Castillioni, EAR Welti, M Kaspari, L Souza. (2020) Abiotic factors and plant biomass, not plant diversity, strongly shape grassland arthropods under drought conditions. —Ecology 101: e03033
Bujan, J. KA Roeder, SP Yanoviak, M Kaspari. (2020) Seasonal plasticity of thermal tolerance in ants.—Ecology 101: e03051
Welti, EAR, L Kucyznski, KA Marske, NJ Sanders, KM de Beurs, M Kaspari. (2020) Salty, mild, and low plant biomass grasslands increase top‐heaviness of invertebrate trophic pyramids. — Geographical Ecology and Biogeography 29(9), pp.1474-1485.
Kaspari, M., EAR Welti, and KM deBeurs (2020) The nutritional geography of ants: gradients of sodium and sugar limitation across North American grasslands. — Journal of Animal Ecology 89:276-284.
see also Clay NA. (2020) The geography of grassland plant chemistry and productivity accounts for ant sodium and sugar usage. . — J Anim Ecol. 89:272–275.
2019
Lucas, J.M., Gora, E., Salzberg, A. & Kaspari, M. (2019). Antibiotics as chemical warfare across multiple taxonomic domains and trophic levels in brown food webs.—Proceedings of the Royal Society B, 286, 20191536.
Kaspari, M, J Bujan, KA Roeder, K de Beurs, and MD Weiser (2019) Species energy and Thermal Performance Theory predict 20-yr changes in ant community abundance and richness. — Ecology 100:e02888
Prather, RM and M Kaspari (2019) Plants regulate grassland arthropod communities through biomass, quality, and habitat heterogeneity. — Ecosphere 10:e02909
Buzzard, V, ST Michaletz, Y Deng, Z He, D Ning, L Shen, Q Tu, JD Van Nostrand, JW Voordeckers, J Wang, MD Weiser, M Kaspari, RB Waide, J Zhou, BJ Enquist (2019) Continental scale structuring of forest and soil diversity via functional traits. — Nature Ecology & Evolution.
Kaspari, M. (2019) In a globally warming world, insects act locally to manipulate their own microclimate. — Proceedings of the National Academy of Sciences 116: 5220-5222
Weiser, MD, D Ning, V Buzzard, ST Michaletz, Z He, BJ Enquist, RB Waide, J Zhou, M Kaspari. (2019) Thermal disruption of soil bacterial assemblages decreases diversity and assemblage similarity. — Ecosphere 10: e02598.
Welti, EAR, NJ Sanders, KM deBeurs, M Kaspari (2019) A distributed experiment demonstrates widespread sodium limitation in grassland food webs. Ecology 100:e02600 see also The Bulletin of the Ecological Society of America 2019-04 DOI: 10.1002/bes2.1509
Kaspari, M, Kirsten M deBeurs (2019) On the geography of activity: productivity but not temperature constrains discovery rates by ectotherm consumers . Ecosphere 10(2):e02536. 10.1002/ecs2.2536.
2018
Bujan, J, SJ Wright, M Kaspari (2018) Biogeochemistry and forest composition shape nesting patterns of a dominant canopy ant. Oecologia 2018:1-10.
Prather, RM, KA Roeder, NJ Sanders, M Kaspari (2018) Using metabolic and thermal ecology to predict temperature dependent ecosystem activity: a test with prairie ants. Ecology 99:2113-2121.
Roeder, KA, DV Roeder, M Kaspari (2018) The role of temperature in competition and persistence of an invaded ant assemblage. Ecological Entomology 43:774-781.
Lucas, J, N Clay, M Kaspari (2018) Nutrient transfer supports a beneficial relationship between the canopy ant, Azteca trigona, and its host tree. Ecological Entomology.
Wright, JS, BJ Turner, J Yavitt, K Harms, M Kaspari, E Tanner, J Bujan, E Griffin, J Major, S Pasquini, M Seldrake, M Garcia (2018) Plant responses to fertilization experiments in lowland,species-rich, tropical forests. Ecology 99:1129-1138.
Roeder, K A, D V Roeder, M Kaspari (2018) Disturbance mediates homogenization of above and belowground invertebrate communities. Environmental Entomology 47:545-550.
Sheldon, K, M Kaspari, N Sanders, R Huey (2018) Fifty years of mountain passes: a perspective on Dan Janzen’s classic paper. The American Naturalist 191: 553-565.
Weiser, M, N Swenson, B Enquist, S Michaletz, R Waide, J Zhou, M Kaspari (2018) Taxonomic decomposition of the latitudinal gradient(s) in species diversity of North American floras. Journal of Biogeography 45:418–428.
2017
Clay, NA, R Lehrter, M Kaspari (2017) Toward a geography of omnivory: Omnivores increase carnivory when sodium is limiting. Journal of Animal Ecology 2017: 1-9. Winner of the British Ecological Society’s Elton Prize for best paper by a young investigator.
Kaspari, M, J Bujan, MD Weiser, D Ning, ST Michaletz, Z He, BJ Enquist, RB Waide, J Zhou, and SJ Wright (2017) Biogeochemistry and soil diversity: multiple elements shape richness of prokaryotes, fungi, and invertebrates in a Panama forest. Ecology 98:2019-2028. See A slightly less paradoxical paradox.
Weiser, MD, ST Michaletz, V Buzzard, Y Deng, Z He, L Shen, BJ Enquist, RB Waide, J Zhou, M Kaspari (2017) Toward a theory for diversity gradients: the abundance-adaptation hypothesis. Ecography doi:10.1111/ecog.02314
K Roeder, M Kaspari (2017) From cryptic herbivore to predator: stable isotopes reveal consistent variability in trophic levels in an ant population. Ecology 98:297-303.
Kaspari, M., K Roeder, B Benson, MD Weiser, N Sanders (2017) Sodium co-limits and catalyzes macronutrients in a prairie food web. Ecology 98:315-320. See Herbivores like a little salt with their protein.
Lucas J, B Bill, B Stevenson, M Kaspari (2017) The microbiome of the ant-built home: the microbial communities of a tropical arboreal ant and its nest. Ecosphere 8: e01639
2016
Bujan J, JP Wright, M Kaspari (2016) Biogeochemical drivers of Neotropical ant activity and diversity, Ecosphere 7: e01597.
Bujan, J, SP Yanoviak, and M Kaspari (2016) Desiccation resistance in tropical insects: causes and mechanisms underlying variability in a Panama ant community. Ecology and Evolution 6282-6291
Kaspari, M, JS Powers (2016) Biogeochemistry and Geographical Ecology: embracing all 25 elements required to build organisms The American Naturalist 188 S1.
Kaspari, M, NA Clay, J Lucas, S Revzen, Adam Kay, SP Yanoviak (2016) Thermal adaptation and phosphorus shape thermal performance in an assemblage of rainforest ants, Ecology 97:1038-1047.
2015
Michaletz, ST, MD Weiser, M Kaspari, BR Helliker, BH Enquist (2015) Plant Homeothermy: Energetics, trait-environment interactions, and carbon economics Trends in Ecology and Evolution. 30: 714-724
Helms, JA, M Kaspari. (2015) Reproduction-dispersal tradeoffs in ant queens. Insectes Sociaux. DOI 10.1007/s00040-015-0391-9
Kaspari, M, NA Clay, J Lucas, SP Yanoviak, A Kay. (2015) Thermal adaptation generates a diversity of thermal limits in a rainforest ant community. Global Change Biology.
2014
Clay, NA, D. Donoso, M Kaspari. (2014) Urine as a source of sodium increases decomposition in an inland but not coastal tropical forest. Oecologia.
Kaspari, M (2014) Road salt offers insights into the connections between diet and neural development. Proceedings of the National Academy of Science 111: 10033-10034.
Clay, NA, SP Yanoviak, M Kaspari. (2014) Short-term sodium inputs attract microbi-detritivores and their predators. Soil Biology and Biochemistry 75: 248-253.
Shik, JZ, JC Santos, JN Neal, AD Kay, UG Mueller, M Kaspari. (2014) Metabolism and the rise of fungus cultivation by ants. 2014_Shik_Metabolism and evolution of gardening in ants AmNat.
Kaspari, M, Clay NA, Donoso D, Yanoviak SP. (2014) Sodium fertilization increases termites and enhances decomposition in an Amazonian forest. Ecology 95: 795–800.
Review of our Salt Work by Elizabeth Penisi in Science.
Kaspari, M, MD Weiser (2014) Meet the new boss, same as the old boss. Science 343: 974-975.
Kay, AD, JA Bruning, A Van Alst, TA Abrahamson, WOH Hughes, M Kaspari. (2014) A carbohydrate-rich diet increases social immunity. Proceedings of the Royal Society B: Biological Sciences: 281
Clay, NA, J Lucas, M Kaspari, AD Kay. (2013) Manna from heaven: refuse from an arboreal ant connects above- and below-ground processes in a lowland tropical forest. Ecosphere 4: Article 141.
2013
Shik, JZ, D Donoso, M Kaspari. (2013) The life history continuum hypothesis links traits of male ants with life outside the nest. Entomologia Experimentalis et Applicata 149: 99-109.
Helms, JA, M Kaspari. (2013) Found or Fly: nutrient loading of dispersing ant queens decreases metrics of flight ability (Hymenoptera:Formicidae). Myrmecological News 19: 85-91.
Kerekes, J, M Kaspari, B Stevenson, H Nilsson, M Hartmann, A Amend, T Bruns (2013) Nutrient enrichment increased species richness of leaf litter fungal assemblages in a tropical forest. Molecular Ecology 22: 2827-2838.
Donoso, D, MK Johnston, NA Clay, M Kaspari. (2013) Trees as templates for trophic structure of tropical litter arthropod communities. Soil Biology and Biogeochemistry 61:45-51.
2012
Mulder, C, A Boit, S Mori JA Vonk, SD Dyer, L Faggiano, S Geisen, AL Gonzalez, M Kaspari, S Lavorel, PA Marquet, AG Rossberg, RW Sterner, W Voight, DH Wall. (2012) Distributional (In)Congruence of Biodiversity-Ecosystem Functioning. Advances in Ecological Research 46: 1-88.
Shik, JZ, C Hou, A Kay, M Kaspari, JF Gillooly. (2012) Towards a general life-history model of the superorganism: predicting the survival, growth and reproduction of ant societies. Biology Letters 8:1059-1062.
Kaspari M, Donoso D, JA Lucas, T Zumbusch, Kay AD. (2012) Using nutritional ecology to predict community structure: a field test in Neotropical ants. Ecosphere 3: 1-12.
Shik, JZ, D Flatt, A Kay, M Kaspari. (2012) A life history continuum in the males of a Neotropical ant assemblage: refuting the sperm vessel hypothesis. Naturwissenschaften 99: 191-197.
Dudley, R, M Kaspari, SP Yanoviak. (2012) Lust for salt in the western Amazon. Biotropica 44: 6-9.
Kay, A D, J Z Shik, A Van Alst, K A Miller, M Kaspari. (2012) Diet composition does not affect ant colony tempo. Functional Ecology 26:317-323.
Sayer, E, SJ Wright, E Tanner, J Yavitt, K Harms, J Powers, M. Kaspari, M Garcia, B Turner. (2012) Variable responses of lowland tropical forest nutrient cycles to fertilization and litter manipulation. Ecosystems 15: 387-400.
Kaspari M. Chapter 4: Stoichiometry, in Metabolic Ecology: a scaling approach. (2012) Eds. Richard Sibly, James H Brown, Astrid Kodric Brown, Oxford University Press.
2011
Shik, JZ, M Kaspari, SP Yanoviak (2011) Preliminary assessment of metabolic costs of the nematode Myrmeconema neotropicalum on its host, the tropical ant Cephalotes atratus. J. Parasitology 97: 958-959.
Wright, SJ, JB Yavitt, N Wurzburger, BL Turner, EVJ Tanner, EJ Sayer, LS Santiago, M Kaspari, LO Hedin, KE Harms, MN Garcia, MD Corre (2011) Potassium, phosphorus or nitrogen limit root allocation, tree growth and litter production in a lowland tropical forest. Ecology 92: 1616-1625
Kaspari M, S O’Donnell, J Lattke, S Powell. (2011) Predation and patchiness in the tropical litter: do swarm-raiding army ants skim the cream or drain the bottle? Journal of Animal Ecology 80: 818-823.
Kaspari M. and MD Weiser. (2011) Per-capita energy availability and the regulation of abundance. Ecography 35: 65-72.
2010
O’Donnell, S, M Kaspari, A Kumar, J Lattke, S Powell (2010) Elevational and geographic variation in army ant swarm raid rates. Insectes Sociaux.
Weiser, M…Kaspari, and 25 authors (2010) Canopy and litter ant assemblages share similar climate-species density relationships. Biology Letters 6: 1744-9561.
Gillooly, JF, C Hou, and M. Kaspari (2010) Eusocial insects as superorganisms: insights from Metabolic Theory. Communicative and Integrative Biology 3:4 1-3.
Donoso, D, MK Johnston, and M Kaspari (2010) Trees as templates for tropical litter arthropod diversity. Oecologia 164: 201-211
Yanoviak SP, Y Munk, M Kaspari, R Dudley. (2010) Aerial manuverability in wingless gliding ants. Proceedings of the Royal Academy B 277: 2194-2204
Kaspari M, C Chang, J Weaver. (2010) Salted roads and sodium limitation in a northern forest ant community. Ecological Entomology 35: 543-548.
Kaspari M, B Stevenson, J Kerekes, J Shik (2010) Scaling community structure: body size and the differentiation of bacteria, fungi, and ant taxocenes across a tropical forest floor. Ecology 91(8) 2221–2226
Hou, C, M Kaspari, HV Zanden, JF Gillooly. (2010) The energetic basis of colonial living in social insects PNAS 107:3634-3638
Shik, JZ and M Kaspari (2010) More food, less habitat: how necromass and litter decomposition combine to regulate a litter ant community. Ecological Entomology 35: 1-8
2009
Kaspari M. SP Yanoviak, R Dudley, M Yuan, and NA Clay. (2009) Sodium shortage as a constraint on the carbon cycle in an inland tropical rainforest PNAS 106:19405-19409.
Yanoviak SP, M Kaspari and R Dudley. (2009) Gliding bristletails and the evolution of flight. Biology Letters 5 510-512
Shik, JZ and M Kaspari. (2009) Lifespan in male ants linked to mating syndrome. Insectes Sociaux 56:131-134
Kaspari M and S Yanoviak (2009) Biogeochemistry and the structure of tropical brown food webs Ecology 90:3342-3351.
Dunn RR, … M Kaspari…and 26 others (2009) Climatic drivers of asymmetry in global patterns of ant diversity. Ecology Letters 12:324-333
O’Donnell, J Lattke, S Powell, M Kaspari. (2009) Species and site differences in Neotropical army ant migration behavior. Ecological Entomology 34: 476-482
2008
Kaspari, M and B. Stevenson. (2008) Evolutionary ecology, antibiosis and all that rot. PNAS 105: 19027-19028
Kaspari, M, S Yanoviak, R Dudley. (2008) On the biogeography of salt limitation: a study of ant communities. PNAS 105: 17848-17851.
Kaspari M. (2008) Knowing your warblers: thoughts on the 50th anniversary of MacArthur (1958). Bulletin of the Ecology Society of America.
Kaspari M and S Yanoviak. (2008) The biogeography of litter depth in tropical forests: evaluating the phosphorus growth rate hypothesis Functional Ecology 22: 919-923.
Yanoviak SP, M Kaspari, R Dudley, G Poinar Jr. (2008) Parasite induced fruit mimicry in a tropical canopy ant. The American Naturalist. 171: 536-544
Kaspari M, J Wright, J Yavitt, K Harms, M Garcia, M Santana. (2008). Multiple nutrients limit litterfall and decomposition in a tropical forest. Ecology Letters 11: 35-43
2007
Dunn RR, … M Kaspari, and 26 others. (2007) Global Ant Biodiversity and Biogeography–A New Database and its Possibilities. Mymecological News 10:77-83.
Lattke, JE, M Kaspari, S O’Donnell, S Powell (2007) Las hormigas ecitoninas de Venezuela (Hymenoptera: Formicidae: Ecitoninae) elenco preliminar. Entomotropica 22: 153-170.
O’Donnell S, Lattke, J, Powell S, Kaspari, M. (2007) Army ants in four forests: Geographical variation in raid rates and species abundance. Journal of Animal Ecology 76: 580-589
Milton, Y and M. Kaspari. (2007) Bottom-up and top-down regulation of decomposition in a tropical forest. Oecologia 153:163-172
Kaspari M. and M Weiser. (2007) The size-grain hypothesis: do macroarthropods see a fractal world? Ecological Entomology 32: 279-282.
2006
Weiser, M & M Kaspari. (2006) Ecological morphospace of New World ants. Ecological Entomology 31: 131-142.
2005
O’Donnell, S, M Kaspari & John Lattke (2005) Extraordinary predation by the Neotropical army ant Cheliomyrmex andicola: implications for the evolution of the army ant syndrome. Biotropica 38:706-709
Kaspari M. (2005) Global energy gradients and the regulation of body size: worker mass and worker number in ant colonies Proceedings of the National Academy of Science USA 102:5079-5083
Yanoviak, S, R Dudley, M Kaspari. (2005) Directed aerial descent in canopy ants. Nature 433: 624-626
Valone, TJ & M Kaspari. (2005) Interactions between granivorous and omnivorous ants in a desert grassland: results from a long term experiment. Ecological Entomology 30: 116-121
2004
Kaspari M, P Ward & M Yuan (2004). Energy gradients and the geographic distribution of local ant diversity. Oecologia 140: 407-414
Kaspari M. (2004) Using the Metabolic Theory of Ecology to predict global patterns of abundance. Ecology 85: 1800-1802.
2003
Kaspari M & S. O’Donnell. (2003) High rates of army ant raids in the Neotropics and implications for ant colony and community structure. Evolutionary Ecology Research 5:933-939.
Kaspari M, M Yuan, & L Alonso. (2003) Spatial grain and gradients of ant species richness. American Naturalist 161: 459-477.
2002
Kaspari M &T Valone. (2002) Seasonal resource availability and the abundance of ectotherms. Ecology 83: 2991-2996
2001
Kaspari M, J Longino, J Pickering & D Windsor. (2001) The phenology of a Neotropical ant assemblage—evidence for continuous and overlapping reproduction. Behavioral Ecology and Sociobiology 50: 382-390.
Kaspari M & S Yanoviak. (2001) Bait use in tropical litter and canopy ants–evidence for differences in nutrient limitation. Biotropica 33: 207-211.
Kaspari M. (2001) Taxonomic level, trophic biology, and the regulation of local abundance. Global Ecology and Biogeography 10:229-244.
Kaspari M, J Pickering & D Windsor (2001) The reproductive flight phenology of a neotropical ant assemblage. Ecological Entomology 26: 245-257.
2000
Kaspari, M & M Weiser. (2000) Ant activity along moisture gradients in a tropical forest. Biotropica 32:703-711.
Scheiner SM, SB Cox, M Willig, G Mittlebach, C Osenberg, & M Kaspari (2000) Species richness, species area curves, and Simpson’s paradox. Evolutionary Ecology Research 2: 791-802.
Kaspari M (2000) Do imported fires ants impact canopy arthropods? Evidence from simple arboreal pitfall traps. Southwestern Naturalist 45:118-122.
Yanoviak, S & M Kaspari (2000) Community structure and the habitat templet: ants in the tropical forest canopy and litter. Oikos 89:259-266.
Kaspari M, S O’Donnell & JR Kercher (2000) Energy, density, and constraints to species richness: studies of ant assemblages along a productivity gradient. American Naturalist 155:280-293
Kaspari M, S. O’Donnell, & L Alonso (2000) Three energy variables predict ant abundance at a geographic scale. Proceedings of the Royal Society B 267:485-490.
1995-1999
Kaspari M & M Weiser (1999) Interspecific scaling in ants: the Size-Grain hypothesis. Functional Ecology 13:530-538.
Kaspari M (1996) Testing resource-based models of patchiness in 4 Neotropical litter ant assemblages. Oikos 76:443-454.
Kaspari M (1996) Litter Ant Patchiness at the m2 scale: disturbance dynamics in three Neotropical forests. Oecologia 107:265-273
Kaspari M (1996) Worker size and seed size selection by harvester ants in a Neotropical forest. Oecologia 105:397-404
Kaspari M & M Byrne (1995) Caste allocation in litter Pheidole: lessons from plant defense theory. Behavioral Ecology and Sociobiology 37:255-263
Kaspari M & E Vargo (1995) Does colony size buffer environmental variation? Bergmann’s rule and social insects. American Naturalist 145:610-632
1988-1994
Kaspari M & E Vargo (1994) Nest site selection by fire ant queens. Insectes Sociaux 41:331-333
Kaspari M (1993) Body size and microclimate use in Neotropical granivorous ants. Oecologia 96:500-507
Kaspari M and A Joern (1993) Prey choice in three grassland birds: reevaluating opportunism. Oikos 68:414-430
Kaspari M (1993) Removal of seeds from Neotropical frugivore droppings: ant responses to seed number. Oecologia 95:81-88.
Kaspari M (1991) Preparation as a strategy to maximize nutrient concentration in prey. Behav. Ecology 2:234-241.
Kaspari M (1991) Central place foraging in the grasshopper sparrow: opportunism or optimal foraging in a variable environment? Oikos 60:307-312.
Kaspari M (1990) Prey preparation and the determinants of handling time. Animal Behaviour 40:118-126.
Young BE, M Kaspari & TE Martin (1990) Species-specific nest site selection by birds in Ant-Acacia Trees. Biotropica 22:310-315.
Kaspari M & H O’Leary (1988) Non-parental attendants in a north-temperate migrant. Auk 105: 792‑793.
