scispace - formally typeset
Book ChapterDOI: 10.1007/978-0-8176-4751-3_4

Ecological Networks: Structure, Interaction Strength, and Stability

01 Jan 2009-pp 57-72
About: The article was published on 2009-01-01. It has received 1 citation(s) till now. The article focuses on the topic(s): Ecological network. more

Topics: Ecological network (60%)

Journal ArticleDOI: 10.1126/SCIENCE.298.5594.824
Ron Milo1, Shai S. Shen-Orr1, Shalev Itzkovitz1, Nadav Kashtan1  +2 moreInstitutions (2)
25 Oct 2002-Science
Abstract: Complex networks are studied across many fields of science. To uncover their structural design principles, we defined “network motifs,” patterns of interconnections occurring in complex networks at numbers that are significantly higher than those in randomized networks. We found such motifs in networks from biochemistry, neurobiology, ecology, and engineering. The motifs shared by ecological food webs were distinct from the motifs shared by the genetic networks of Escherichia coli and Saccharomyces cerevisiae or from those found in the World Wide Web. Similar motifs were found in networks that perform information processing, even though they describe elements as different as biomolecules within a cell and synaptic connections between neurons in Caenorhabditis elegans. Motifs may thus define universal classes of networks. This more

Topics: Network motif (67%), Complex network (57%)

6,350 Citations

Open access
01 Jan 1973-

5,524 Citations

Open accessBook
21 Aug 1973-
Abstract: Preface vii Preface to the Second Edition Biology Edition 1. Intoduction 3 2. Mathematical Models and Stability 13 3. Stability versus Complexity in Multispecies Models 4. Models with Few Species: Limit Cycles and Time Delays 79 5. Randomly Fluctuating Environments 109 6. Niche Overlap and Limiting Similarity 139 7. Speculations 172 Appendices 187 Afterthoughts for the Second Edition 211 Bibliography to Afterthoghts 234 Bibliography 241 Author Index 259 Subject Index 263 more

4,906 Citations

Journal ArticleDOI: 10.1086/282400
Abstract: It is suggested that local animal species diversity is related to the number of predators in the system and their efficiency in preventing single species from monopolizing some important, limiting, requisite. In the marine rocky intertidal this requisite usually is space. Where predators capable of preventing monopolies are missing, or are experimentally removed, the systems become less diverse. On a local scale, no relationship between latitude (10⚬ to 49⚬ N.) and diversity was found. On a geographic scale, an increased stability of annual production may lead to an increased capacity for systems to support higher-level carnivores. Hence tropical, or other, ecosystems are more diverse, and are characterized by disproportionately more carnivores. more

Topics: Ecosystem diversity (56%), Species diversity (52%), Keystone species (52%) more

4,638 Citations

BookDOI: 10.1515/9780691209418
31 Dec 1968-
Abstract: Professor Levins, one of the leading explorers in the field of integrated population biology, considers the mutual interpenetration and joint evolution of organism and environment, occurring on several levels at once. Physiological and behavioral adaptations to short-term fluctuations of the environment condition the responses of populations to long-term changes and geographic gradients. These in turn affect the way species divide the environments among themselves in communities, and, therefore, the numbers of species which can coexist. Environment is treated here abstractly as pattern: patchiness, variability, range, etc. Populations are studied in their patterns: local heterogeneity, geographic variability, faunistic diversity, etc. more

3,387 Citations

No. of citations received by the Paper in previous years