Theoretical Ecology

This book continues the authoritative and established edited series of theoretical ecology books initiated by Robert May which helped pave the way for ecology to become a more robust theoretical science, encouraging the modern biologist to better understand the mathematics behind their theories. This latest instalment in the Theoretical Ecology series builds on the legacy of its predecessors with a completely new set of contributions. Rather than placing emphasis on the historical ideas in theoretical ecology, the editors have encouraged each contribution to: i) synthesize historical theoretical ideas within modern frameworks that have emerged in the last ten to twenty years (e.g., bridging population interactions to whole food webs); ii) describe novel theory that has emerged in the last twenty years from historical empirical areas (e.g., macro-ecology); and iii) cover the booming area of theoretical ecological applications (e.g., disease theory and global change theory). The result is a forward-looking synthesis that will help guide the field through a further decade of development and discovery.

2020 ◽  
pp. 1-4
Author(s):  
Gabriel Gellner ◽  
Kevin S. McCann ◽  
Emily J. Champagne

This book continues the authoritative and established edited series of theoretical ecology books initiated by Robert May which helped pave the way for ecology to become a more robust theoretical science, encouraging the modern biologist to better understand the mathematics behind their theories. This latest instalment in the Theoretical Ecology series builds on the legacy of its predecessors with a completely new set of contributions. Rather than placing emphasis on historical ideas in theoretical ecology, the editors have encouraged each contribution to: i) synthesize historical theoretical ideas within modern frameworks that have emerged in the last ten to twenty years (e.g., bridging population interactions to whole food webs); ii) describe novel theory that has emerged in the last twenty years from historical empirical areas (e.g., macro-ecology); and iii) cover the booming area of theoretical ecological applications (e.g., disease theory and global change theory). The result is a forward-looking synthesis that will help guide the field through a further decade of development and discovery. Early chapters are collectively more about the building blocks for understanding dynamics of interacting species in time and space, including coexistence, consumer-resource and biological lags, stochasticity, and stage structure. Later, chapters are representative of the study of networks, a large growth area. These include matrix theory, mutualistic networks, community structure, body size and system structure, and network ecology. Novel concepts such as trait-based models and meta-population ecology are then presented. Applied theoretical ecology is then covered by chapters on disease ecology, climate change dynamics, and stable states.


Author(s):  
Risto Hilpinen

Medieval philosophers presented Gettier-type objections to the commonly accepted view of knowledge as firmly held true belief, and formulated additional conditions that meet the objections or analyzed knowledge in a way that is immune to the Gettier-type objections. The proposed conditions can be divided into two kinds: backward-looking conditions and forward-looking conditions. The former concern an inquirer’s current belief system and the way the inquirer acquired her beliefs, the latter refer to what the inquirer may come to learn in the future and how she can respond to objections. Some conditions of knowledge proposed in late nineteenth- and twentieth-century epistemology can be regarded as variants of the conditions put forward by medieval authors.


2005 ◽  
Vol 11 (3) ◽  
pp. 490-501 ◽  
Author(s):  
Mark Emmerson ◽  
Martijn Bezemer ◽  
Mark D. Hunter ◽  
T. Hefin Jones

2008 ◽  
Vol 105 (46) ◽  
pp. 17848-17851 ◽  
Author(s):  
Michael Kaspari ◽  
Stephen P. Yanoviak ◽  
Robert Dudley

Sodium is an essential nutrient whose deposition in rainfall decreases with distance inland. The herbivores and microbial decomposers that feed on sodium-poor vegetation should be particularly constrained along gradients of decreasing sodium. We studied the use of sucrose and NaCl baits in 17 New World ant communities located 4–2757 km inland. Sodium use was higher in genera and subfamilies characterized as omnivores/herbivores compared with those classified as carnivores and was lower in communities embedded in forest litter than in those embedded in abundant vegetation. Sodium use was increased in ant communities further inland, as was preference for the baits with the highest sodium concentration. Sucrose use, a measure of ant activity, peaked in communities 10–100 km inland. We suggest that the geography of ant activity is shaped by sodium toxicity near the shore and by sodium deficit farther inland. Given the importance of ants in terrestrial ecosystems, changing patterns of rainfall with global change may ramify through inland food webs.


Science ◽  
2020 ◽  
Vol 369 (6505) ◽  
pp. 829-832 ◽  
Author(s):  
Ivan Nagelkerken ◽  
Silvan U. Goldenberg ◽  
Camilo M. Ferreira ◽  
Hadayet Ullah ◽  
Sean D. Connell

As human activities intensify, the structures of ecosystems and their food webs often reorganize. Through the study of mesocosms harboring a diverse benthic coastal community, we reveal that food web architecture can be inflexible under ocean warming and acidification and unable to compensate for the decline or proliferation of taxa. Key stabilizing processes, including functional redundancy, trophic compensation, and species substitution, were largely absent under future climate conditions. A trophic pyramid emerged in which biomass expanded at the base and top but contracted in the center. This structure may characterize a transitionary state before collapse into shortened, bottom-heavy food webs that characterize ecosystems subject to persistent abiotic stress. We show that where food web architecture lacks adjustability, the adaptive capacity of ecosystems to global change is weak and ecosystem degradation likely.


MTZ worldwide ◽  
2018 ◽  
Vol 79 (3) ◽  
pp. 74-74
Author(s):  
Karl Huber
Keyword(s):  
The Way ◽  

Hydrobiologia ◽  
2010 ◽  
Vol 657 (1) ◽  
pp. 181-198 ◽  
Author(s):  
Daniel M. Perkins ◽  
Julia Reiss ◽  
Gabriel Yvon-Durocher ◽  
Guy Woodward

2018 ◽  
Vol 24 (8) ◽  
pp. 3692-3714 ◽  
Author(s):  
Irena F. Creed ◽  
Ann-Kristin Bergström ◽  
Charles G. Trick ◽  
Nancy B. Grimm ◽  
Dag O. Hessen ◽  
...  

Author(s):  
Tone Rustøen

AbstractHope is a phenomenon many nurses and patients are concerned about. One of the reasons for this interest may be that many patients today live with chronic illnesses, and hope is something positive and focuses on the future and opportunities. Hope is a way of feeling, thinking, and influencing one’s behavior. The way we view our health and health-related challenges are assumed to impact on hope. Hope is forward-looking, realistic, and multidimensional. It is a resource for health and health-promoting processes and can be considered a salutogenic resource and construct. This chapter highlights what hope means during illness, what research has so far been concerned with, how hope can be assessed, and how nurses can strengthen hope in patients.


2016 ◽  
Vol 57 (133) ◽  
pp. 153-176
Author(s):  
Krishna Del Toso

ABSTRACT The aim of this paper is to provide a sketch on the way Nāgārjuna deals with the idea of 'relation'. The concept of 'relation' as expressed in the Pāli sources is here theoretically systematized according to three patterns: 1. (onto)logical, 2. strictly subordinative existential, 3. non-strictly subordinative existential. After having discussed Nāgārjuna's acceptance and treatment of these three patterns, particular attention is paid to the non-strictly subordinative existential relation. This kind of relation is meant to describe the way the factors of the conditioned co-origination are linked to each other and is exemplified by Nāgārjuna by means of the father-son bond. A possible way to explain the conditioned co-origination doctrine in the light of the father-son example is here suggested by having resource to the 'Cambridge change' theory. Even if in the Pāli Canon the non-strictly subordinative existential pattern is said to apply to all the other factors of the conditioned co-origination, there is no direct evidence that it concerns also the avidyā-saṃskāras link. It will be shown how Nāgārjuna, by applying it to the avidyā-saṃskāras link, seems to introduce a new perspective in the conditioned co-origination theory.


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