Spatial (a)synchrony in population fluctuations of five plant species in fragmented habitats

Kiviniemi, Katariina; Löfgren, Anders

doi:10.1016/j.baae.2008.01.005

Cited by 9 publications

(10 citation statements)

References 34 publications

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“…Therefore, the smallest measurable P value is 1/(9,999 ? 1) (Fortin et al 2002, Fortin and Dale 2005, Kiviniemi and Löfgren 2009.…”

Section: Discussionmentioning

confidence: 96%

“…As eggs were counted on only 10 fruits per tree per collection date, egg abundances and egg infestation rates were not considered for spatial analysis because values per tree were too small. The Mantel statistic estimates the linear correlation (Pearson's product-moment) between the distance values of two paired symmetric matrices, and repeated permutations (randomisation procedure) give its significance (Legendre and Fortin 1989;Legendre and Legendre 1998;Fortin and Dale 2005;Kiviniemi and Löfgren 2009). As the precision of the probability value is directly related to the number of randomisations, we used 9,999 permutations plus the observed statistic.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Oviposition pattern and within-season spatial and temporal variation of pre-dispersal seed predation in a population of Mimosa bimucronata trees

Rossi

Rodrigues

Ishino

et al. 2011

Arthropod-Plant Interactions

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Spatial and temporal variation of pre-dispersal seed predation was investigated in a population of Mimosa bimucronata trees located in the south-east region of Brazil. Three main hypotheses were addressed: (1) that the life stages of the seed predator Acanthoscelides schrankiae are synchronised with the reproductive stages of its host plant;(2) that seed predation levels vary spatially as a result of differences in fruiting phenology synchrony and fruit production among trees; and (3) that predation levels should be affected by the proximity of trees, showing a spatial structure. Also investigated was the oviposition pattern of A. schrankiae among seeds and fruits. Twenty spatially referenced trees were monitored throughout a year to examine tree phenology and egg laying and adult emergence. The bruchine's life stages were synchronised with the reproductive stages of M. bimucronata trees. Egg distribution among seeds and fruits was aggregated. Infestation rates of adult bruchines were not spatially related to fruiting phenology and there is evidence that seed predation is a spatially density-independent process, because the relationship between infestation rates and fruit production was not significant. Finally, it was observed that the distribution of adult bruchines was spatially structured, because similar levels of infestation were found among nearby trees.

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“…Therefore, the smallest measurable P value is 1/(9,999 ? 1) (Fortin et al 2002, Fortin and Dale 2005, Kiviniemi and Löfgren 2009.…”

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Oviposition pattern and within-season spatial and temporal variation of pre-dispersal seed predation in a population of Mimosa bimucronata trees

Rossi

Rodrigues

Ishino

et al. 2011

Arthropod-Plant Interactions

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show abstract

“…Bjørnstad et al, 1999) and separating dispersal from these effects is notoriously problematic (Kendall et al, 2000; Kiviniemi and Löfgren, 2009). National climate trends were addressed by conducting analyses on pre-whitened data and at a local scale, where movement of individuals has a greater effect than climate .…”

Section: Synchrony Data Availabilitymentioning

confidence: 99%

Towards a measure of functional connectivity: local synchrony matches small scale movements in a woodland edge butterfly

2012

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25This study investigates the sensitivity of local synchrony to movement patterns of the Ringlet butterfly (Aphantopus hyperantus). We examine whether population synchrony, describing the correlated fluctuations of conspecific populations, may prove an effective surrogate measure for monitoring functional connectivity in this species without the requirement of exhaustive sampling. We compared the effect on population synchrony of two different distance measures, direct (Euclidean) distance and distance via woodland rides and edges, and also of habitat matrix composition.

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“…Despite the ubiquity of autocorrelation in ecological systems, the underlying mechanisms remain unclear. Three commonly cited mechanisms hypothesized to cause spatial synchrony are: (a) correlated environmental conditions that drive population dynamics [Moran effects;Moran 1953;Ranta et al 1997], (b) dispersal or movement between populations, and (c) interspecific interactions such as predator/prey relationships (Koenig 2002;Liebhold et al 2004;Kiviniemi and Lofgren 2009;Rosenstock et al 2011). Any of these mechanisms may produce a pattern of declining synchrony with increasing distance (Bellamy et al 2003).…”

Section: Introductionmentioning

confidence: 98%

“…not in synchrony) with possibility of recolonization should they become locally extinct (Hanski and Gilpin 1991;Koenig 1998). Indeed metapopulation structure is known to reduce risk of extinction in fragmented landscapes across a wide range of taxa including plants (Kiviniemi and Lofgren 2009), invertebrates (Hanski et al 1995;Drechsler et al 2003;Guiney et al 2010;Harrison et al 1988), fish (Smedbol and Wroblewski 2002;Figueira 2009), herptiles (Marsh and Trenham 2001;Hels and Nachman 2002;Templeton et al 2011), mammals (Sweanor et al 2000;Magle et al 2010), and birds (Busch et al 2000;Cattadori et al 1999;Scheiman et al 2007;Ringsby et al 2002). Metapopulations within urbanizing landscapes remain largely unexamined (Niemelä 1999), despite the fact that reproductive rates, population turnover, and landscape permeability are strongly affected by urban land uses (Hanski and Gilpin 1991;Opdam 1991;Soule et al 1988, Reed andLevine 2005).…”

Section: Introductionmentioning

confidence: 99%

Avian metapopulation dynamics in a fragmented urbanizing landscape

Rodewald

2014

Urban Ecosyst

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As urbanization transforms landscapes around the globe, we are challenged to find ways for urban habitats to contribute to ongoing wildlife conservation efforts. Yet aside from basic distributions and relative abundance, we know little about the population dynamics of most species occupying urban habitats and almost nothing about the extent to which local populations serve as source or sink habitats. We analyzed the spatial synchrony and persistence of local populations of 16 avian species breeding in 14 mature riparian forests in central Ohio, USA during 2005-2011. In addition, we examined demographic growth rates (λ) for 2 focal species (northern cardinal, Cardinalis cardinalis, and Acadian flycatcher, Empidonax virescens) to understand source-sink structure. Our results showed high rates of population turnover for the majority of species and negative growth rates for both focal species, indicating that most populations functioned as sinks. Local populations showed little evidence of population synchrony, as we found consistently low or negative spatial autocorrelation and relatively high rates of population turnover for both migratory and resident species. Collectively our results suggest that long-term persistence of regional populations of birds breeding in Midwestern riparian forest fragments may be facilitated by metapopulation dynamics.

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Spatial (a)synchrony in population fluctuations of five plant species in fragmented habitats

Cited by 9 publications

References 34 publications

Oviposition pattern and within-season spatial and temporal variation of pre-dispersal seed predation in a population of Mimosa bimucronata trees

Oviposition pattern and within-season spatial and temporal variation of pre-dispersal seed predation in a population of Mimosa bimucronata trees

Towards a measure of functional connectivity: local synchrony matches small scale movements in a woodland edge butterfly

Avian metapopulation dynamics in a fragmented urbanizing landscape

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