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249 results on '"Martinez, Neo D."'

2. Ecogeographical rules and the macroecology of food webs

Author

Baiser, Benjamin, Gravel, Dominique, Cirtwill, Alyssa R, Dunne, Jennifer A, Fahimipour, Ashkaan K, Gilarranz, Luis J, Grochow, Joshua A, Li, Daijiang, Martinez, Neo D, McGrew, Alicia, Poisot, Timothée, Romanuk, Tamara N, Stouffer, Daniel B, Trotta, Lauren B, Valdovinos, Fernanda S, Williams, Richard J, Wood, Spencer A, and Yeakel, Justin D

Subjects
Bergmann's rule, ecogeographical rules, ecological networks, food webs, island rule, latitudinal diversity gradient, macroecology, Rapoport's rule, Physical Geography and Environmental Geoscience, Ecological Applications, Ecology
Abstract

Aim: How do factors such as space, time, climate and other ecological drivers influence food web structure and dynamics? Collections of well-studied food webs and replicate food webs from the same system that span biogeographical and ecological gradients now enable detailed, quantitative investigation of such questions and help integrate food web ecology and macroecology. Here, we integrate macroecology and food web ecology by focusing on how ecogeographical rules [the latitudinal diversity gradient (LDG), Bergmann's rule, the island rule and Rapoport's rule] are associated with the architecture of food webs. Location: Global. Time period: Current. Major taxa studied: All taxa. Methods: We discuss the implications of each ecogeographical rule for food webs, present predictions for how food web structure will vary with each rule, assess empirical support where available, and discuss how food webs may influence ecogeographical rules. Finally, we recommend systems and approaches for further advancing this research agenda. Results: We derived testable predictions for some ecogeographical rules (e.g. LDG, Rapoport's rule), while for others (e.g., Bergmann's and island rules) it is less clear how we would expect food webs to change over macroecological scales. Based on the LDG, we found weak support for both positive and negative relationships between food chain length and latitude and for increased generality and linkage density at higher latitudes. Based on Rapoport's rule, we found support for the prediction that species turnover in food webs is inversely related to latitude. Main conclusions: The macroecology of food webs goes beyond traditional approaches to biodiversity at macroecological scales by focusing on trophic interactions among species. The collection of food web data for different types of ecosystems across biogeographical gradients is key to advance this research agenda. Further, considering food web interactions as a selection pressure that drives or disrupts ecogeographical rules has the potential to address both mechanisms of and deviations from these macroecological relationships. For these reasons, further integration of macroecology and food webs will help ecologists better understand the assembly, maintenance and change of ecosystems across space and time.

Published
2019

3. Stability of Degree Heterogeneous Ecological Networks

Author

Yan, Gang, Martinez, Neo D., and Liu, Yang-Yu

Subjects
Quantitative Biology - Populations and Evolution, Physics - Physics and Society
Abstract

A classic measure of ecological stability describes the tendency of a community to return to equilibrium after small perturbation. While many advances show how the network structure of these communities severely constrains such tendencies, few if any of these advances address one of the most fundamental properties of network structure: heterogeneity among nodes with different numbers of links. Here we systematically explore this property of "degree heterogeneity" and find that its effects on stability systematically vary with different types of interspecific interactions. Degree heterogeneity is always destabilizing in ecological networks with both competitive and mutualistic interactions while its effects on networks of predator-prey interactions such as food webs depend on prey contiguity, i.e., the extent to which the species consume an unbroken sequence of prey in community niche space. Increasing degree heterogeneity stabilizes food webs except those with the most contiguity. These findings help explain previously unexplained observations that food webs are highly but not completely contiguous and, more broadly, deepens our understanding of the stability of complex ecological networks with important implications for other types of dynamical systems., Comment: 20 pages, 5 figures

Published
2014

4. Predator traits determine food-web architecture across ecosystems

Author

Brose, Ulrich, Archambault, Phillippe, Barnes, Andrew D., Bersier, Louis-Felix, Boy, Thomas, Canning-Clode, João, Conti, Erminia, Dias, Marta, Digel, Christoph, Dissanayake, Awantha, Flores, Augusto A. V., Fussmann, Katarina, Gauzens, Benoit, Gray, Clare, Häussler, Johanna, Hirt, Myriam R., Jacob, Ute, Jochum, Malte, Kéfi, Sonia, McLaughlin, Orla, MacPherson, Muriel M., Latz, Ellen, Layer-Dobra, Katrin, Legagneux, Pierre, Li, Yuanheng, Madeira, Carolina, Martinez, Neo D., Mendonça, Vanessa, Mulder, Christian, Navarrete, Sergio A., O’Gorman, Eoin J., Ott, David, Paula, José, Perkins, Daniel, Piechnik, Denise, Pokrovsky, Ivan, Raffaelli, David, Rall, Björn C., Rosenbaum, Benjamin, Ryser, Remo, Silva, Ana, Sohlström, Esra H., Sokolova, Natalia, Thompson, Murray S. A., Thompson, Ross M., Vermandele, Fanny, Vinagre, Catarina, Wang, Shaopeng, Wefer, Jori M., Williams, Richard J., Wieters, Evie, Woodward, Guy, and Iles, Alison C.

Published
2019
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14. The macroecology of phylogenetically structured hummingbird-plant networks

Author

González, Ana M. Martín, Dalsgaard, Bo, Nogués-Bravo, David, Graham, Catherine H., Schleuning, Matthias, Maruyama, Pietro K., Abrahamczyk, Stefan, Alarcón, Ruben, Araujo, Andréa C., Araújo, Francielle P., de Azevedo, Severino Mendes, Baquero, Andrea C., Cotton, Peter A., Ingversen, Tanja Toftemark, Kohler, Glauco, Lara, Carlos, Las-Casas, Flor Maria Guedes, Machado, Adriana O., Machado, Caio Graco, Maglianesi, María Alejandra, McGuire, Jimmy A., Moura, Alan Cerqueira, Oliveira, Genilda M., Oliveira, Paulo E., Ornelas, Juan Francisco, da Cruz Rodrigues, Lidéia, Rosero-Lasprilla, Liliana, Rui, Ana M., Sazima, Marlies, Timmermann, Allan, Varassin, Isabela Galarda, Vizentin-Bugoni, Jeferson, Wang, Zhiheng, Watts, Stella, Rahbek, Carsten, and Martinez, Neo D.

Published
2015

25. Consumer-Resource Body-Size Relationships in Natural Food Webs

Author

Brose, Ulrich, Jonsson, Tomas, Berlow, Eric L., Warren, Philip, Banasek-Richter, Carolin, Bersier, Louis-Félix, Blanchard, Julia L., Brey, Thomas, Carpenter, Stephen R., Blandenier, Marie-France Cattin, Cushing, Lara, Dawah, Hassan Ali, Dell, Tony, Edwards, Francois, Harper-Smith, Sarah, Jacob, Ute, Ledger, Mark E., Martinez, Neo D., Memmott, Jane, Mintenbeck, Katja, Pinnegar, John K., Rall, Björn C., Rayner, Thomas S., Reuman, Daniel C., Ruess, Liliane, Ulrich, Werner, Williams, Richard J., Woodward, Guy, and Cohen, Joel E.

Published
2006

33. Approaching a state shift in Earth’s biosphere

Author

Barnosky, Anthony D., Hadly, Elizabeth A., Bascompte, Jordi, Berlow, Eric L., Brown, James H., Fortelius, Mikael, Getz, Wayne M., Harte, John, Hastings, Alan, Marquet, Pablo A., Martinez, Neo D., Mooers, Arne, Roopnarine, Peter, Vermeij, Geerat, Williams, John W., Gillespie, Rosemary, Kitzes, Justin, Marshall, Charles, Matzke, Nicholas, Mindell, David P., Revilla, Eloy, and Smith, Adam B.

Published
2012
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34. Food-web assembly during a classic biogeographic study: species''trophic breadth' corresponds to colonization order

Author

Piechnik, Denise A., Lawler, Sharon P., and Martinez, Neo D.

Subjects
Environmental issues
Abstract

To purchase or authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.0030-1299.2008.15915.x Byline: Denise A. Piechnik, Sharon P. Lawler, Neo D. Martinez Abstract: Ecologists have found many patterns in food-web structure. Some, like the constant connectance hypothesis, lack definitive explanatory mechanisms. In response, we investigated whether community assembly mechanisms could explain why trophic complexity consistently scales with species richness among ecosystems. We analyzed how food-web structure developed during the community assembly recorded in Simberloff and Wilson's classic biogeography experiment. Using their arthropod surveys, we constructed six time series of food-webs from pre- and post-defaunation censuses of six experimental islands, and synthesized trophic information for 250 species from the literature and expert sources. We found that the fraction of specialist species increased and the fraction of generalists decreased during food-web assembly. Directed connectance initially declined over time, despite an increase in species richness, but eventually leveled off as predicted by the constant connectance hypothesis of diversity-complexity scaling. The initial decline was explained by later colonization by trophic specialists, probably due to limited resource availability during early colonization. Late-colonizing super-generalists maintained constant connectance at later dates. This relationship between colonization success and trophic breadth helps explain food-web patterns and corroborates assertions that community assembly is systematically influenced by species' trophic breadths. Article History: Manuscript Accepted 7 November 2007 Article note: D. A. Piechnik (dap26@psu.edu), Dept of Biology, San Francisco State Univ. and Dept of Entomology, Univ. of California, Davis, USA. Present address: Penn State Inst. of Energy & the Environment and the Dept of Entomology, 501 A.S.I. Bldg., The Pennsylvania State Univ., University Park, PA 16802, USA. - N. D. Martinez, Pacific Ecoinformatics and Computational Ecology Lab, 1604 McGee Ave, Berkely, CA 94703, Crested Butte, CO 81224, USA. - S. P. Lawler, Dept of Entomology, Univ. of California, Davis, CA, USA.

Published
2008

35. Unified spatial scaling of species and their trophic interactions

Author

Brose, Ulrich, Ostling, Annette, Harrison, Kateri, and Martinez, Neo D.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): Ulrich Brose (corresponding author) [1, 2, 4]; Annette Ostling [3]; Kateri Harrison [2]; Neo D. Martinez [2] Two largely independent bodies of scaling theory address the quantitative relationships between [...]

Published
2004
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39. Simple rules yield complex food webs

Author

Williams, Richard J. and Martinez, Neo D.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): Richard J. Williams; Neo D. Martinez (corresponding author) Several of the most ambitious theories in ecology [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, [...]

Published
2000
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44. HOW DO COMPLEX FOOD WEBS PERSIST IN NATURE?

Author

Dell, Anthony I., primary, Kokkoris, Giorgos D., additional, Banašek-Richter, Carolin, additional, Bersier, Louis-Félix, additional, Dunne, Jennifer A., additional, Kondoh, Michio, additional, Romanuk, Tamara N., additional, and Martinez, Neo D., additional

Published
2005
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46. CONTRIBUTORS

Author

Arrington, D. Albrey, primary, Attree, Kevin, additional, Baird, Donald J., additional, Banaŝek-Richter, Carolin, additional, Beisner, Beatrix E., additional, Bengtsson, Janne, additional, Benstead, Jonathan P., additional, Berg, Matty P., additional, Berlow, Eric L., additional, Bersier, Louis-Félix, additional, Bjornstad, Ottar, additional, Bracewell, Kathryn V., additional, Brose, Ulrich, additional, Carpenter, Stephen R., additional, Cash, Kevin J., additional, Cattin, Marie-France, additional, Cohen, Joel E., additional, Cousins, Steven H., additional, Cross, Wyatt F., additional, Cuddington, Kim, additional, Culp, Joseph M., additional, de Roos, André M., additional, de Ruiter, Peter C., additional, De Angelis, Don L., additional, Dekker, Stefan C., additional, Dell, Anthony I., additional, Downing, Amy, additional, Drossel, Barbara, additional, Dunne, Jennifer A., additional, Ebenman, Bo, additional, Eggert, Sue L., additional, Eklöf, Anna, additional, Emmerson, Mark C., additional, Fox, Jeremy W., additional, Glozier, Nancy E., additional, Hall, Spencer R., additional, Harper-Smith, Sarah, additional, Hastings, Alan, additional, Hulot, Florence D., additional, Humphries, Murray, additional, Keller, Andrew, additional, Knapp, Roland A., additional, Koen-Alonso, Mariano, additional, Kokkoris, Giorgos D., additional, Kondoh, Michio, additional, Kooi, Bob W., additional, Layman, Craig A., additional, Leibold, Mathew A., additional, Loreau, Michel, additional, Martinez, Neo D., additional, McCann, Kevin, additional, McGrady-Steed, Jill, additional, McKane, Alan J., additional, Melian, Carlos, additional, Montoya, José M., additional, Mooij, Wolf M., additional, Moore, John C., additional, Morin, Peter J., additional, Mulder, Christian, additional, Olesen, J.M., additional, Pavao-Zuckerman, Mitchell, additional, Persson, Lennart, additional, Petchey, Owen L., additional, Purtauf, Tobias, additional, Raffaelli, Dave, additional, Rasmussen, Joe, additional, Romanuk, Tamara N., additional, Rosemond, Amy D., additional, Sabo, John L., additional, Scharler, Ursula M., additional, Scheu, Stefan, additional, Schröter, Dagmar, additional, Setälä, Heikki, additional, Solé, Ricard V., additional, Soykan, Candan U., additional, Szanser, Maciej, additional, Thébault, Elisa, additional, Traas, Theo P., additional, Umbanhowar, James, additional, Valido, A., additional, Verhoef, Herman A., additional, Vos, Matthijs, additional, Wallace, J. Bruce, additional, Warren, Philip H., additional, Williams, Richard J., additional, Winemiller, Kirk O., additional, Wolters, Volkmar, additional, Woodward, Guy, additional, Wootton, J. Timothy, additional, and Yodzis, Peter, additional

Published
2005
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48. Bringing Elton and Grinnell together: a quantitative framework to represent the biogeography of ecological interaction networks

Author

Gravel, Dominique, primary, Baiser, Benjamin, additional, Dunne, Jennifer A., additional, Kopelke, Jens‐Peter, additional, Martinez, Neo D., additional, Nyman, Tommi, additional, Poisot, Timothée, additional, Stouffer, Daniel B., additional, Tylianakis, Jason M., additional, Wood, Spencer A., additional, and Roslin, Tomas, additional

Published
2018
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49. Body Sizes of Consumers and Their Resources

Author

Brose, Ulrich, Cushing, Lara, Berlow, Eric L., Jonsson, Tomas, Banasek-Richter, Carolin, Bersier, Louis-Felix, Blanchard, Julia L., Brey, Thomas, Carpenter, Stephen R., Blandenier, Marie-France Cattin, Cohen, Joel E., Dawah, Hassan Ali, Dell, Tony, Edwards, Francois, Harper-Smith, Sarah, Jacob, Ute, Knapp, Roland A., Ledger, Mark E., Memmott, Jane, Mintenbeck, Katja, Pinnegar, John K., Rall, Björn C., Rayner, Tom, Ruess, Liliane, Ulrich, Werner, Warren, Philip, Williams, Rich J., Woodward, Guy, Yodzis, Peter, and Martinez, Neo D.

Published
2005

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