Predator–prey interactions and changing environments: who benefits?
- 1 May 2007
- journal article
- Published by The Royal Society in Philosophical Transactions Of The Royal Society B-Biological Sciences
- Vol. 362 (1487), 2095-2104
- https://doi.org/10.1098/rstb.2007.2102
Abstract
While aquatic environments have long been thought to be more moderate environments than their terrestrial cousins, environmental data demonstrate that for some systems this is not so. Numerous important environmental parameters can fluctuate dramatically, notably dissolved oxygen, turbidity and temperature. The roles of dissolved oxygen and turbidity on predator–prey interactions have been discussed in detail elsewhere within this issue and will be considered only briefly here. Here, we will focus primarily on the role of temperature and its potential impact upon predator–prey interactions. Two key properties are of particular note. For temperate aquatic ecosystems, all piscine and invertebrate piscivores and their prey are ectothermic. They will therefore be subject to energetic demands that are significantly affected by environmental temperature. Furthermore, the physical properties of water, particularly its high thermal conductivity, mean that thermal microenvironments will not exist so that fine-scale habitat movements will not be an option for dealing with changing water temperature in lentic environments. Unfortunately, there has been little experimental analysis of the role of temperature on such predator–prey interactions, so we will instead focus on theoretical work, indicating that potential implications associated with thermal change are unlikely to be straightforward and may present a greater threat to predators than to their prey. Specifically, we demonstrate that changes in the thermal environment can result in a net benefit to cold-adapted species through the mechanism of predator–prey interactions.Keywords
This publication has 46 references indexed in Scilit:
- The origin of allometric scaling laws in biology from genomes to ecosystems: towards a quantitative unifying theory of biological structure and organizationJournal Of Experimental Biology, 2005
- Control of metabolic rate is a hidden variable in the allometric scaling of homeothermsJournal Of Experimental Biology, 2005
- Re-examination of the “3/4-law” of MetabolismJournal of Theoretical Biology, 2001
- Wetland ecotones as refugia for endangered fishesBiological Conservation, 1996
- Size‐Specific Interactions in Lake Systems: Predator Gape Limitation and prey Growth Rate and MortalityEcology, 1996
- Refugia for Endangered Fishes from an Introduced Predator in Lake Nabugabo, UgandaConservation Biology, 1996
- Risk of Predation and Its Influence on the Relative Competitive Abilities of Two Species of Freshwater FishesCanadian Journal of Fisheries and Aquatic Sciences, 1994
- Evolution of the life history of Arctic charr Salvelinus alpinusEvolutionary Ecology, 1994
- Dimensionless numbers and life history variation in Brown TroutEvolutionary Ecology, 1993
- Effect of hypoxanthine-3(N)-oxide and hypoxanthine-1(N)-oxide on central nervous excitation of the black tetraGymnocorymbus ternetzi (Characidae, Ostariophysi, Pisces) indicated by dorsal light responseJournal of Chemical Ecology, 1985