Canadian harelynx dynamics and climate variation: need for further interdisciplinary work on the interface between ecology and climate

Stenseth, Nils Chr.

doi:10.3354/cr034091

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…These indices are useful as they collapse multiple aspects of the physical environment, including ocean currents and air and water temperature, wave height, salinity, wind, and rainfall into a single parameter, and are thus generalizable ''phenomena'' rather than definable changes in single environmental variables (Stenseth et al 2002, Hallett et al 2004, Zhang et al 2007. Moreover, these studies have shown that such large-scale indices can serve as more effective indicators of ecological response than individual weather parameters collected at the scale of the organism (Stenseth 2007). However, while indicative of large-scale processes, correlations between biological responses and indices such as NAO fail to provide mechanistic linkages between changes in environmental parameters and ecological responses of organisms (Hallett et al 2004, Helmuth et al 2006b).…”

Section: Introductionmentioning

confidence: 99%

Climate and Recruitment of Rocky Shore Intertidal Invertebrates in the Eastern North Atlantic

Broitman

Mieszkowska

Helmuth

et al. 2008

Ecology

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Abstract. Studies of the impacts of climate and climate change on biological systems often attempt to correlate ecological responses with basin-scale indices such as the North Atlantic Oscillation (NAO). However, such correlations, while useful for detecting long-term trends, are unable to provide a mechanism linking the physical environment and ecological processes. Here we evaluate the effects of the NAO on recruitment variability of rocky intertidal invertebrates in the North Atlantic examining two possible climate-related pathways. Using a highly conservative test we interpret associations with the NAO integrated over a season (three months) as an indicator of atmospheric effects on newly settled recruits (NAO3), and the effects of the NAO integrated over six months (NAO6) as an indicator of changes in ocean circulation affecting patterns of larval transport. Through an extensive literature survey we found 13 time series, restricted to southwest Ireland and Britain and comprising five species, that could be used for statistical analysis. Significant correlations with NAO3, our proxy for atmospheric effects, were observed in the south-central domain of our study region (southwest Ireland and south England). Significant correlations with NAO6, the proxy for ocean circulation effects, were detected on southwest Ireland. The associations were detected for three (two barnacles and a topshell) at two sites. These results suggest that the NAO can have effects on the recruitment of intertidal invertebrates through different pathways linked to climate and be distributed heterogeneously in space. Based on previous evidence and the sign and geographic location of significant correlations, we suggest that winter NAO effects are likely to occur as a result of effects on the survival of early life stages settling during spring or through changes in phenology. Our results argue that a combination of modeling and synthesis can be used to generate hypotheses regarding the effects of climate on recruitment and aid in the design of field-based tests of explicit ecological mechanisms.

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Section: Introductionmentioning

confidence: 99%

Climate and Recruitment of Rocky Shore Intertidal Invertebrates in the Eastern North Atlantic

Broitman

Mieszkowska

Helmuth

et al. 2008

Ecology

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“…The role of intrinsic and extrinsic factors has been fervently debated within the field of ecology for almost a century, and it is now generally agreed that both intrinsic density-dependent factors and extrinsic density-independent factors the determine population dynamics of animals (Stenseth 2007). Many recent studies have demonstrated that both density dependency and precipitation affect population dynamics of small rodents in Australia (Singleton & Redhead 1990;Pech et al 1999), Africa (Leirs et al 1997, North America (Jaksic et al 1997;Lima et al 1999Lima et al , 2003Zhang et al 2007a) and Asia Zhang et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Effect of ENSO‐driven precipitation on population irruptions of the Yangtze vole Microtus fortis calamorum in the Dongting Lake region of China

Zhang

Cong

et al. 2010

Integrative Zoology

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The Yangtze vole (Microtus fortis Buechner, 1889) is a small herbivore species that inhabits lake beaches in the Dongting Lake region along the Yangtze River in Southern China. Its population shows strong oscillations during the wet season due to summer precipitation-induced immigration away from the lake into adjacent rice fields. The effect of El Niño-Southern Oscillation-driven precipitation on population abundance and growth of the vole species is not fully understood. We undertook an analysis of the combined data of 4 time series covering 1981-2006 from 4 different sites and a separate analysis on a single time series (1981-2006) from one site. Our results demonstrate that a dual effect of El Niño-Southern Oscillation-driven precipitation on the population abundance of voles is time-dependent: precipitation in the current year has a positive effect, whereas precipitation in the previous year has a negative effect. The dual effect of precipitation on vole population is well explained by the unique interactions among vole population, precipitation water level and the lake beach habitat around Dongting Lake. We found that drier than average weather of the previous year benefited voles because their breeding habitats, lake beaches, were exposed for long stretches of time. Wet weather was found to increase the number of voles inhabiting rice fields because as the water level of the lake rose they were forced from beaches into surrounding rice fields. Summer precipitation in the Dongting Lake region was found to be positively associated with the sea surface temperature (SST) of the eastern tropical Pacific Ocean of the previous year and winter SST and spring SST of the current year. Annual rates of increase in the vole population of the reconstructed time series are negatively associated with the vole abundance and autumn precipitation of the previous year and winter precipitation of the current years. These results suggest that both extrinsic and density-dependent intrinsic factors may affect population dynamics of the Yangtze voles.

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“…Aliasing should also be better evaluated in many other circumstances, such as the coupled aerosol-cloud-rain system, because the LVM is applied to modeling [17]. The influence of climate anomalies has been investigated as a driver of periods in population dynamics, as in the hare-lynx system [18,19]. Species abundance rates are the basis for evaluation of biological control success in crops, and in such cases, aliasing may have great financial consequences [20].…”

Section: Sampling Effectsmentioning

confidence: 99%

Inadequate Sampling Rates Can Undermine the Reliability of Ecological Interaction Estimation

Cabella

Meloni

Martinêz

2019

MCA

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Cycles in population dynamics are abundant in nature and are understood as emerging from the interaction among coupled species. When sampling is conducted at a slow rate compared to the population cycle period (aliasing effect), one is prone to misinterpretations. However, aliasing has been poorly addressed in coupled population dynamics. To illustrate the aliasing effect, the Lotka–Volterra model oscillatory regime is numerically sampled, creating prey–predator cycles. We show that inadequate sampling rates may produce inversions in the cause-effect relationship among other artifacts. More generally, slow acquisition rates may distort data interpretation and produce deceptive patterns and eventually leading to misinterpretations, as predators becoming preys. Experiments in coupled population dynamics should be designed that address the eventual aliasing effect.

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Canadian harelynx dynamics and climate variation: need for further interdisciplinary work on the interface between ecology and climate

Cited by 7 publications

References 6 publications

Climate and Recruitment of Rocky Shore Intertidal Invertebrates in the Eastern North Atlantic

Climate and Recruitment of Rocky Shore Intertidal Invertebrates in the Eastern North Atlantic

Effect of ENSO‐driven precipitation on population irruptions of the Yangtze vole Microtus fortis calamorum in the Dongting Lake region of China

Inadequate Sampling Rates Can Undermine the Reliability of Ecological Interaction Estimation

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Canadian harelynx dynamics and climate variation: need for further interdisciplinary work on the interface between ecology and climate

Cited by 7 publications

References 6 publications

Climate and Recruitment of Rocky Shore Intertidal Invertebrates in the Eastern North Atlantic

Climate and Recruitment of Rocky Shore Intertidal Invertebrates in the Eastern North Atlantic

Effect of ENSO‐driven precipitation on population irruptions of the Yangtze vole Microtus fortis calamorum in the Dongting Lake region of China

Inadequate Sampling Rates Can Undermine the Reliability of Ecological Interaction Estimation

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Canadian harelynx dynamics and climate variation: need for further interdisciplinary work on the interface between ecology and climate