Log in

Relevant bibliographies by topics / Propagule pressure / Journal articles

Journal articles on the topic 'Propagule pressure'

To see the other types of publications on this topic, follow the link: Propagule pressure.

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Propagule pressure.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Moulton, Michael P., and Wendell P. Cropper. "Propagule pressure does not consistently predict the outcomes of exotic bird introductions." PeerJ 7 (September 11, 2019): e7637. http://dx.doi.org/10.7717/peerj.7637.

Full text

Abstract:

Some have argued that the role of propagule pressure in explaining the outcomes of bird introductions is well-supported by the historical record. Here, we show that the data from a large published database (including 832 records with propagule information) do not support the conclusion that propagule pressure is the primary determinant of introduction success in birds. A few compendia of historical reports have been widely used to evaluate introduction success, typically by combining data from numerous species and introduction locations. Very few taxa, other than birds, have usable spatially explicit records of introductions over time. This availability of data inflates the perceived importance of bird analyses for addressing factors related to invasion success. The available data allow limited testing of taxonomic and site-level factors of introduction outcomes. We did find significant differences in effort and success probabilities among avian orders and across highly aggregated spatial regions. As a test of a standard and logical expectation of the propagule pressure hypothesis, we concentrated on introductions with the smallest propagules, because it is for these the hypothesis is most likely to be correct. We analyzed the effect of numbers released in small propagules (two through 10) for 227 releases. Weighted linear regression indicated no significant effect of propagule size for this range of release size. In fact, the mean success rate of 28% for propagules of 2–10 isn’t significantly different than that of 34% for propagules of 11–100. Following the example of previous analyses, we expanded the statistical test of propagule pressure to include the full range of release numbers. No significant support for the propagule pressure hypothesis was found using logistic regression with either logit or complementary log-log link functions.

APA, Harvard, Vancouver, ISO, and other styles

2

Wittmann, Meike J., Dirk Metzler, Wilfried Gabriel, and Jonathan M. Jeschke. "Decomposing propagule pressure: the effects of propagule size and propagule frequency on invasion success." Oikos 123, no. 4 (February 6, 2014): 441–50. http://dx.doi.org/10.1111/j.1600-0706.2013.01025.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Smyth, Eric R. B., and D. Andrew R. Drake. "The role of propagule pressure and environmental factors on the establishment of a large invasive cyprinid: black carp in the Laurentian Great Lakes basin." Canadian Journal of Fisheries and Aquatic Sciences 79, no. 1 (January 2022): 6–20. http://dx.doi.org/10.1139/cjfas-2020-0187.

Full text

Abstract:

Understanding the factors underlying species establishment is critical for the management of invasive fishes, yet the roles of propagule pressure and environmental factors are infrequently quantified in joint models. We estimated the establishment likelihood of the invasive black carp (Mylopharyngodon piceus) by examining the relative influence of propagule pressure (introduction size and age structure) and environmental factors (temperature-driven young-of-year [YOY] overwinter survival, adult survival, age at maturity, and longevity). Simulations demonstrated that both propagule pressure and environmental factors can act as non-linear bottlenecks to establishment. When the model was applied to 12 Great Lakes tributaries and nearshore areas, black carp establishment was probable with sufficient propagules and under most environmental conditions (median p = 0.21–0.73, 0.70–1.00, and 0.46–0.97 for 100 pairs of age 4, age 9, and age 16 fish, respectively), except for YOY (p < 0.01). Our analysis is one of the few studies to examine the relative role of propagule pressure and environmental conditions on establishment, indicating that both factors can lead to establishment failure independently or concurrently within an ecosystem.

APA, Harvard, Vancouver, ISO, and other styles

4

Briski, Elizabeta, Sarah A. Bailey, Oscar Casas-Monroy, Claudio DiBacco, Irena Kaczmarska, Colin Levings, Michael L. MacGillivary, et al. "Relationship between propagule pressure and colonization pressure in invasion ecology: a test with ships' ballast." Proceedings of the Royal Society B: Biological Sciences 279, no. 1740 (March 28, 2012): 2990–97. http://dx.doi.org/10.1098/rspb.2011.2671.

Full text

Abstract:

Increasing empirical evidence indicates the number of released individuals (i.e. propagule pressure) and number of released species (i.e. colonization pressure) are key determinants of the number of species that successfully invade new habitats. In view of these relationships, and the possibility that ships transport whole communities of organisms, we collected 333 ballast water and sediment samples to investigate the relationship between propagule and colonization pressure for a variety of diverse taxonomic groups (diatoms, dinoflagellates and invertebrates). We also reviewed the scientific literature to compare the number of species transported by ships to those reported in nature. Here, we show that even though ships transport nearly entire local communities, a strong relationship between propagule and colonization pressure exists only for dinoflagellates. Our study provides evidence that colonization pressure of invertebrates and diatoms may fluctuate widely irrespective of propagule pressure. We suggest that the lack of correspondence is explained by reduced uptake of invertebrates into the transport vector and the sensitivity of invertebrates and diatoms to selective pressures during transportation. Selection during transportation is initially evident through decreases in propagule pressure, followed by decreased colonization pressure in the most sensitive taxa.

APA, Harvard, Vancouver, ISO, and other styles

5

Levin, Donald A. "Ancient Dispersals, Propagule Pressure, and Species Selection in Flowering Plants." Systematic Botany 31, no. 3 (July 1, 2006): 443–48. http://dx.doi.org/10.1600/036364406778388692.

Full text

Abstract:

The importance of ancient long-distance migrations in shaping the geographical structure of genera and families is becoming ever more apparent. The long-distance immigrants were not random samples of their floras, but had attributes which made them prime candidates for the intercontinental sweepstakes. High propagule dispersability was one such trait. I propose that these invasive species also must have produced large numbers of propagules across their ranges, by virtue of large population numbers and sizes. They probably were widespread, major elements in their floras. These ideas are supported by the fact that propagule pressure is a prime determinant of a contemporary species' invasion potential, as is the size of its native geographical distribution. I propose that highly dispersable and propagule-rich lineages are likely to have high speciation rates, because access to new regions affords opportunities for ecological and geographical speciation. These lineages also may persist longer, being more broadly distributed in space. The evolutionary advantage of these lineages extends to periods of climatic change.

APA, Harvard, Vancouver, ISO, and other styles

6

Drake, John M., Peter Baggenstos, and David M. Lodge. "Propagule pressure and persistence in experimental populations." Biology Letters 1, no. 4 (August 31, 2005): 480–83. http://dx.doi.org/10.1098/rsbl.2005.0375.

Full text

Abstract:

Average inoculum size and number of introductions are known to have positive effects on population persistence. However, whether these factors affect persistence independently or interact is unknown. We conducted a two-factor experiment in which 112 populations of parthenogenetic Daphnia magna were maintained for 41 days to study effects of inoculum size and introduction frequency on: (i) population growth, (ii) population persistence and (iii) time-to-extinction. We found that the interaction of inoculum size and introduction frequency—the immigration rate—affected all three dependent variables, while population growth was additionally affected by introduction frequency. We conclude that for this system the most important aspect of propagule pressure is immigration rate, with relatively minor additional effects of introduction frequency and negligible effects of inoculum size.

APA, Harvard, Vancouver, ISO, and other styles

7

Seebens, Hanno, Elizabeta Briski, Sara Ghabooli, Tamara Shiganova, Hugh J. MacIsaac, and Bernd Blasius. "Non-native species spread in a complex network: the interaction of global transport and local population dynamics determines invasion success." Proceedings of the Royal Society B: Biological Sciences 286, no. 1901 (April 24, 2019): 20190036. http://dx.doi.org/10.1098/rspb.2019.0036.

Full text

Abstract:

The number of released individuals, which is a component of propagule pressure, is considered to be a major driver for the establishment success of non-native species. However, propagule pressure is often assumed to result from single or few release events, which does not necessarily apply to the frequent releases of invertebrates or other taxa through global transport. For instance, the high intensity of global shipping may result in frequent releases of large numbers of individuals, and the complexity of shipping dynamics impedes predictions of invasion dynamics. Here, we present a mathematical model for the spread of planktonic organisms by global shipping, using the history of movements by 33 566 ships among 1477 ports to simulate population dynamics for the comb jelly Mnemiopsis leidyi as a case study. The degree of propagule pressure at one site resulted from the coincident arrival of individuals from other sites with native or non-native populations. Key to sequential spread in European waters was a readily available source of propagules and a suitable recipient environment. These propagules were derived from previously introduced ‘bridgehead’ populations supplemented with those from native sources. Invasion success is therefore determined by the complex interaction of global shipping and local population dynamics. The general findings probably hold true for the spread of species in other complex systems, such as insects or plant seeds exchanged via commercial trade or transport.

APA, Harvard, Vancouver, ISO, and other styles

8

Acosta, Francisco, Richard M. Zamor, Fares Z. Najar, Bruce A. Roe, and K. David Hambright. "Dynamics of an experimental microbial invasion." Proceedings of the National Academy of Sciences 112, no. 37 (August 31, 2015): 11594–99. http://dx.doi.org/10.1073/pnas.1505204112.

Full text

Abstract:

The ecological dynamics underlying species invasions have been a major focus of research in macroorganisms for the last five decades. However, we still know little about the processes behind invasion by unicellular organisms. To expand our knowledge of microbial invasions, we studied the roles of propagule pressure, nutrient supply, and biotic resistance in the invasion success of a freshwater invasive alga, Prymnesium parvum, using microcosms containing natural freshwater microbial assemblages. Microcosms were subjected to a factorial design with two levels of nutrient-induced diversity and three levels of propagule pressure, and incubated for 7 d, during which P. parvum densities and microbial community composition were tracked. Successful invasion occurred in microcosms receiving high propagule pressure whereas nutrients or community diversity played no role in invasion success. Invaded communities experienced distinctive changes in composition compared with communities where the invasion was unsuccessful. Successfully invaded microbial communities had an increased abundance of fungi and ciliates, and decreased abundances of diatoms and cercozoans. Many of these changes mirrored the microbial community changes detected during a natural P. parvum bloom in the source system. This role of propagule pressure is particularly relevant for P. parvum in the reservoir-dominated southern United States because this species can form large, sustained blooms that can generate intense propagule pressures for downstream sites. Human impact and global climate change are currently causing widespread environmental changes in most southern US freshwater systems that may facilitate P. parvum establishment and, when coupled with strong propagule pressure, could put many more systems at risk for invasion.

APA, Harvard, Vancouver, ISO, and other styles

9

Gertzen, Erin, Oriana Familiar, and Brian Leung. "Quantifying invasion pathways: fish introductions from the aquarium trade." Canadian Journal of Fisheries and Aquatic Sciences 65, no. 7 (July 2008): 1265–73. http://dx.doi.org/10.1139/f08-056.

Full text

Abstract:

Introduced species can cause economic and environmental harm. Researchers have developed risk assessment models for exotic species based on biological characteristics. However, few have quantified propagule pressure despite its relevance for establishment. Both are needed to identify invasion risk. We focused on fishes introduced via the aquarium trade, because this pathway transports thousands of species throughout the world. We developed an approach to estimate propagule pressure by (i) identifying and quantifying aquarium fishes sold, (ii) determining fish owner behavior and disposal practices, and (iii) quantifying uncertainty. We used the St. Lawrence Seaway as our model system. Only one nonestablished species ( Tanichthys albonubes , 117 per year) had the propagule pressure and environmental tolerances to likely invade this region. However, overall, more than 10 000 fishes were released annually from Montréal (Quebec, Canada) alone. The implication of the observed propagule pressures is that the aquarium trade should be a very important pathway in other warmer habitats and should be explicitly assessed. Knowledge of the numbers introduced of each species will be useful for population models to estimate the probability of establishment.

APA, Harvard, Vancouver, ISO, and other styles

10

Levin, Donald A. "Propagule pressure and the establishment of emergent polyploid populations." Annals of Botany 127, no. 1 (October 27, 2020): 1–5. http://dx.doi.org/10.1093/aob/mcaa187.

Full text

Abstract:

Abstract Background Whereas the incidence or rate of polyploid speciation in flowering plants is modest, the production of polyploid individuals within local populations is widespread. Explanations for this disparity primarily have focused on properties or interactions of polyploids that limit their persistence. Hypothesis The emergence of local polyploid populations within diploid populations is similar to the arrival of invasive species at new, suitable sites, with the exception that polyploids suffer interference from their progenitor(s). The most consistent predictor of successful colonization by invasive plants is propagule pressure, i.e. the number of seeds introduced. Therefore, insufficient propagule pressure, i.e. the formation of polyploid seeds within diploid populations, ostensibly is a prime factor limiting the establishment of newly emergent polyploids within local populations. Increasing propagule number reduces the effects of genetic, environmental and demographic stochasticity, which thwart population survival. As with invasive species, insufficient seed production within polyploid populations limits seed export, and thus reduces the chance of polyploid expansion. Conclusion The extent to which propagule pressure limits the establishment of local polyploid populations remains to be determined, because we know so little. The numbers of auto- or allopolyploid seed in diploid populations rarely have been ascertained, as have the numbers of newly emergent polyploid plants within diploid populations. Moreover, seed production by these polyploids has yet to be assessed.

APA, Harvard, Vancouver, ISO, and other styles

11

Simberloff, Daniel. "The Role of Propagule Pressure in Biological Invasions." Annual Review of Ecology, Evolution, and Systematics 40, no. 1 (December 2009): 81–102. http://dx.doi.org/10.1146/annurev.ecolsys.110308.120304.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Ramula, Satu, Miia Jauni, and Tapio van Ooik. "Propagule pressure governs establishment of an invasive herb." Acta Oecologica 68 (October 2015): 18–23. http://dx.doi.org/10.1016/j.actao.2015.07.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Colautti, Robert I., Igor A. Grigorovich, and Hugh J. MacIsaac. "Propagule Pressure: A Null Model for Biological Invasions." Biological Invasions 8, no. 5 (January 23, 2006): 1023–37. http://dx.doi.org/10.1007/s10530-005-3735-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Colautti, Robert I., Igor A. Grigorovich, and Hugh J. MacIsaac. "Propagule pressure: a null model for biological invasions." Biological Invasions 9, no. 7 (September 5, 2007): 885. http://dx.doi.org/10.1007/s10530-006-9007-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Moyano, Jaime, Mariana C. Chiuffo, Nahuel Policelli, Martin A. Nuñez, and Mariano A. Rodriguez-Cabal. "The interplay between propagule pressure, seed predation and ectomycorrhizal fungi in plant invasion." NeoBiota 42 (February 18, 2019): 45–58. http://dx.doi.org/10.3897/neobiota.42.30978.

Full text

Abstract:

There are many hypotheses aiming to explain invasion success, but evaluating individual hypotheses in isolation may hinder our ability to understand why some species invade and others fail. Here we evaluate the interaction between propagule pressure, seed predation and missed mutualism in the invasion success of the pine, Pinusponderosa. We evaluated the independent and interactive effects of propagule pressure and seed predation at increasing distances from a pine plantation. Additionally, because pines are obligate mutualists with ectomycorrhizal fungi (EMF) and pine invasions fail in the absence of their EMF symbionts, we evaluated EMF availability through a growth chamber bioassay. In this bioassay we measured root colonization by EMF with soil samples collected from the different distances from the plantation. We found that propagule pressure overwhelms seed predation only at the edge of the pine plantation, while seed predation overcomes propagule pressure at 25 m and further distances from the plantation. We also found that EMF root colonization decreases with distance from the plantation. However, pine roots were colonized up to 200 m from the plantation, suggesting that EMF may not be hindering invasion, at least not on the scale of this experiment. Taken together our results demonstrate that seed predation may be limiting the invasion of P.ponderosa in the study region as propagule pressure only overcomes seed predation at the plantation edge. Here we provide evidence of how strong biotic resistance can suppress an invasion, regardless of the variation in propagule pressure and the availability of mutualists.

APA, Harvard, Vancouver, ISO, and other styles

16

Holle, Betsy Von, and Daniel Simberloff. "ECOLOGICAL RESISTANCE TO BIOLOGICAL INVASION OVERWHELMED BY PROPAGULE PRESSURE." Ecology 86, no. 12 (December 2005): 3212–18. http://dx.doi.org/10.1890/05-0427.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Lockwood, Julie L., Phillip Cassey, and Tim Blackburn. "The role of propagule pressure in explaining species invasions." Trends in Ecology & Evolution 20, no. 5 (May 2005): 223–28. http://dx.doi.org/10.1016/j.tree.2005.02.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Hedge, Luke H., and Emma L. Johnston. "Propagule pressure determines recruitment from a commercial shipping pier." Biofouling 28, no. 1 (January 2012): 73–85. http://dx.doi.org/10.1080/08927014.2011.652622.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Leung, Brian, and Nicholas E. Mandrak. "The risk of establishment of aquatic invasive species: joining invasibility and propagule pressure." Proceedings of the Royal Society B: Biological Sciences 274, no. 1625 (August 21, 2007): 2603–9. http://dx.doi.org/10.1098/rspb.2007.0841.

Full text

Abstract:

Invasive species are increasingly becoming a policy priority. This has spurred researchers and managers to try to estimate the risk of invasion. Conceptually, invasions are dependent both on the receiving environment (invasibility) and on the ability to reach these new areas (propagule pressure). However, analyses of risk typically examine only one or the other. Here, we develop and apply a joint model of invasion risk that simultaneously incorporates invasibility and propagule pressure. We present arguments that the behaviour of these two elements of risk differs substantially—propagule pressure is a function of time, whereas invasibility is not—and therefore have different management implications. Further, we use the well-studied zebra mussel ( Dreissena polymorpha ) to contrast predictions made using the joint model to those made by separate invasibility and propagule pressure models. We show that predictions of invasion progress as well as of the long-term invasion pattern are strongly affected by using a joint model.

APA, Harvard, Vancouver, ISO, and other styles

20

Tala, WD Syarni. "The Study of Mangrove Reproductive Phenology in The Rhizophoraceae Family (Bruguiera gymnorrhiza (L.) Lamk., Ceriops tagal (Perr.) C.B. Rob., Rhizophora apiculata Blume. and Rhizophora mucronata Lamk.)." Jurnal Biologi Tropis 20, no. 3 (November 12, 2020): 406. http://dx.doi.org/10.29303/jbt.v20i3.2091.

Full text

Abstract:

Kendari Bay is directly adjacent to the Kendari City area, so that it receives a lot of pressure mainly from community activities. This pressure causes the declining of mangrove forest area every year. Reproductive phenology of mangroves can be used in planning, collecting seeds, and seeding propagules for rehabilitation of degraded mangrove forest area. The aims of this research were to know the morphological characteristics of mangrove reprodutive organs and mangrove reproductive phenology of Bruguiera gymnorrhiza, Ceriops tagal, Rhizophora apiculata, and Rhizophora mucronata in Kendari Bay. The method using in this research was observation method that conducted directly in the field. Morphology and phenology of mangrove reproduction divided into 6 phases, i.e. flower bud, blooming flower, ovary, fruit, young propagule and mature propagule. The data was analysed descriptively. According to the result, the morphological characteristics of 4 mangrove species were different. Flower of B. gymnorrhiza was single, whereas flowers of C. tagal, R. apiculata and R. mucronata were inflorescences. Ovary of B. gymnorrhiza was hemi inferous, whereas ovaries of C. tagal, R. apiculata and R. mucronata were superous. R. mucronata had the largest propagule compared to other mangroves observed. The timing of mangrove reproductive phenology also showed different result. B. gymnorrhiza required 299 days to develop from flower bud to mature propagule and R. apiculata required 262 days, whereas C. tagal and R. mucronata had not been able known its phenological period because the timing data from ovary to fruit had not been obtained. Further research is needed to resolve this issue.

APA, Harvard, Vancouver, ISO, and other styles

21

Dressler, Michael D., Josue Conde, Omar Tonsi Eldakar, and Robert P. Smith. "Timing between successive introduction events determines establishment success in bacteria with an Allee effect." Proceedings of the Royal Society B: Biological Sciences 286, no. 1902 (May 2019): 20190598. http://dx.doi.org/10.1098/rspb.2019.0598.

Full text

Abstract:

Propagule pressure is a leading determinant of population establishment. Yet, an experimental understanding of how propagule size and number (two principal parts of propagule pressure) determine establishment success remains incomplete. Theoretical studies suggest that the timing between introduction events, a component of propagule number, can influence establishment success. However, this dynamic has rarely been explored experimentally. Using Escherichia coli engineered with an Allee effect, we investigated how the timing of two introduction events influences establishment. For populations introduced below the Allee threshold, establishment occurred if the time between two introduction events was sufficiently short, with the length of time between events further reduced by reducing growth rate. Interestingly, we observed that as the density of bacteria introduced in one introduction event increased, the time between introduction events that allowed for establishment increased. Using a mathematical model, we provide support that the mechanism behind these trends is the ability of the first population to modify the environment, which can pave the way for establishment of the second population. Our results provide experimental evidence that the temporal distribution of introduction events regulates establishment, furthering our understanding of propagule pressure and may have implications in invasion biology and infectious disease.

APA, Harvard, Vancouver, ISO, and other styles

22

Fowler, AE, AMH Blakeslee, J. Canning-Clode, MF Repetto, GM Ruiz, and A. Whitman Miller. "A baitbox for all seasons: temporal shifts in a vector’s propagule supply characteristics and implications for invasion ecology." Marine Ecology Progress Series 641 (May 7, 2020): 13–24. http://dx.doi.org/10.3354/meps13303.

Full text

Abstract:

Invasion dynamics are influenced by both vector operation and propagule pressure. Which propagules are entrained in a vector depends on how, where, and when a vector operates, but the timing and effects of vector operations on species delivery patterns is poorly resolved. Using the live marine baitworm trade, we tested vector selectivity across 3 boreal seasons (summer 2011, fall 2011, and spring 2012). We compared macroinvertebrate assemblages at the source (Maine, US east coast field) and in baitboxes upon delivery (Mid-Atlantic distributors, US east coast) and quantified live and dead biota to test for interactive effects of season and vector stage (i.e. source vs. destination) on per capita abundance, species richness, diversity, functional richness, and community composition. In all, we identified 46262 hitchhiking macro-organisms from 56 distinct taxa. Among live biota, taxonomic richness, functional group richness, and abundance differed by vector stage and season. Community composition showed seasonality for functional groups, but not for taxonomic groups. Vector stage affected dead community composition more than season, implying that vector operations (i.e. handling at source and during shipping) filter species transfers differentially. Dead communities were typically composed of the most abundant live organisms in the same baitboxes, emphasizing how important propagule pressure is to successful transport. Some combinations of 5 key functional traits (body size, feeding mode, growth form, modularity, and motility) were associated with increased survival during vector transfer. Successful species transfers are correlated with specific functional traits and propagule pressure, both of which are influenced by seasonal variation.

APA, Harvard, Vancouver, ISO, and other styles

23

Taylor, Laura A. V., and Mitchell B. Cruzan. "Propagule Pressure and Disturbance Drive the Invasion of Perennial False-Brome (Brachypodium sylvaticum)." Invasive Plant Science and Management 8, no. 2 (June 2015): 169–80. http://dx.doi.org/10.1614/ipsm-d-14-00042.1.

Full text

Abstract:

An ecosystem's invasibility is influenced by changes in biotic and abiotic resistances, which often occur due to shifts in the prevailing disturbance regime. The susceptibility of a community to intrusion by nonnative species may interact with propagule pressure to determine the extent of a biological invasion. We examined how propagule pressure, forest community structure, and disturbance interact to influence the invasibility of temperate Pacific Northwest forests by the newly invasive grass, perennial false-brome (Brachypodium sylvaticum). Our goal was to identify factors enabling shifts from establishment to population growth in B. sylvaticum populations at the edge of its expanding range. Ecological sampling methods were used to identify patterns in B. sylvaticum habitat. An inverse relationship between the amount of B. sylvaticum and all perennial vegetation types and soil litter depth was found, suggesting that disturbance might play a role in B. sylvaticum population establishment or growth. An experimental study was then performed to test the effects of disturbance, propagule pressure, and habitat on B. sylvaticum seedling establishment in sites where B. sylvaticum was already naturalized. We found evidence that disturbance of the soil and vegetation led to increased B. sylvaticum seedling recruitment within naturalized sites, especially where conditions of high propagule pressure and deciduous forest canopy existed. In contrast, B. sylvaticum populations dominated by coniferous forest canopy were much more invasible than deciduous forests and did not show increased seedling recruitment in response to our disturbance treatments. Our study shows how propagule pressure and plant community dynamics interact to alter the invasibility of Pacific Northwest forests allowing B. sylvaticum to transition from establishment to population growth thus allowing this weed to cause greater negative impacts on the ecosystem.

APA, Harvard, Vancouver, ISO, and other styles

24

Saccaggi, D. L., J. R. U. Wilson, and J. S. Terblanche. "Propagule pressure helps overcome adverse environmental conditions during population establishment." Current Research in Insect Science 1 (2021): 100011. http://dx.doi.org/10.1016/j.cris.2021.100011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Hollebone, AL, and ME Hay. "Propagule pressure of an invasive crab overwhelms native biotic resistance." Marine Ecology Progress Series 342 (July 24, 2007): 191–96. http://dx.doi.org/10.3354/meps342191.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Leung, Brian, John M. Drake, and David M. Lodge. "PREDICTING INVASIONS: PROPAGULE PRESSURE AND THE GRAVITY OF ALLEE EFFECTS." Ecology 85, no. 6 (June 2004): 1651–60. http://dx.doi.org/10.1890/02-0571.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Colautti, Robert I. "Are characteristics of introduced salmonid fishes biased by propagule pressure?" Canadian Journal of Fisheries and Aquatic Sciences 62, no. 4 (April 1, 2005): 950–59. http://dx.doi.org/10.1139/f05-002.

Full text

Abstract:

Many recent studies of nonindigenous species (NIS) have used life history and morphological characteristics of invaders to either (i) build statistical models that predict new invaders or (ii) test ecological and evolutionary hypotheses. However, species characteristics may be confounded if NIS are transported or introduced nonrandomly with respect to the chosen contrast group, which typically consists of native or globally available species. For example, deliberately introduced NIS are often chosen according to economic rather than ecological factors. Here, I use stocking records of salmonid species introduced into Nevada, USA, to test for propagule biases within this system. I find that established salmonids are introduced significantly more times, and in greater numbers, than are those that fail and that species chosen for introduction are a nonrandom sample of the global salmonid species pool. Statistical differences among characteristics of salmonid species that established, those that were introduced, and those from the global source pool suggest that maximum reported size and weight as well as latitudinal range and midlatitude all represent propagule-biased characteristics of salmonids introduced into Nevada. These results highlight the need for caution when using characteristics of invaders to develop statistical models or to test hypotheses relevant to ecology and evolution.

APA, Harvard, Vancouver, ISO, and other styles

28

Verling, Emma, Gregory M. Ruiz, L. David Smith, Bella Galil, A. Whitman Miller, and Kathleen R. Murphy. "Supply-side invasion ecology: characterizing propagule pressure in coastal ecosystems." Proceedings of the Royal Society B: Biological Sciences 272, no. 1569 (June 14, 2005): 1249–57. http://dx.doi.org/10.1098/rspb.2005.3090.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Eckberg, James O., Brigitte Tenhumberg, and Svata M. Louda. "Insect herbivory and propagule pressure influenceCirsium vulgareinvasiveness across the landscape." Ecology 93, no. 8 (August 3, 2012): 1787–94. http://dx.doi.org/10.1890/11-1583.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Martínez-Ghersa, M. Alejandra, and Claudio M. Ghersa. "The relationship of propagule pressure to invasion potential in plants." Euphytica 148, no. 1-2 (March 2006): 87–96. http://dx.doi.org/10.1007/s10681-006-5943-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

De Jong, Gabriel L., and Norma L. Fowler. "Duration of propagule pressure affects non-native plant species abundances." American Journal of Botany 105, no. 2 (February 2018): 197–206. http://dx.doi.org/10.1002/ajb2.1026.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Lee, Jennifer E., and Steven L. Chown. "Quantifying the propagule load associated with the construction of an Antarctic research station." Antarctic Science 21, no. 5 (October 2009): 471–75. http://dx.doi.org/10.1017/s0954102009990162.

Full text

Abstract:

AbstractAlthough the impacts of biological invasions are widely appreciated, a bias exists in research effort to post dispersal processes because of the difficulties of measuring propagule pressure. Here we quantify the propagule pressure associated with the construction of a research station in Antarctica. Based on quantitative assessment of different classes of cargo, we predict that over 5000 seeds will be entrained during the period of building the station. Seeds from 34 taxa were identified, including known invasive species.

APA, Harvard, Vancouver, ISO, and other styles

33

DiBacco, Claudio, Donald B. Humphrey, Leslie E. Nasmith, and Colin D. Levings. "Ballast water transport of non-indigenous zooplankton to Canadian ports." ICES Journal of Marine Science 69, no. 3 (September 2, 2011): 483–91. http://dx.doi.org/10.1093/icesjms/fsr133.

Full text

Abstract:

Abstract DiBacco, C., Humphrey, D. B., Nasmith, L. E., and Levings, C. D. 2012. Ballast water transport of non-indigenous zooplankton to Canadian ports. – ICES Journal of Marine Science, 69: 483–491. Ballast water is one of the primary transport vectors for the transfer and introduction of non-indigenous zooplankton (NIZ). Regulations require vessels from overseas to conduct mid-ocean exchange before discharging ballast in Canadian ports. Intracoastal vessels from nearby ports may be exempt from exchange, whereas intracoastal vessels from more distant ports are required to exchange. Zooplankton in the ballast water of transoceanic exchanged (TOE), intracoastal exchanged (ICE), and intracoastal unexchanged (ICU) vessels arriving at Canada's west (WC) and east (EC) coasts were examined. NIZ density, propagule pressure, taxon richness, and community composition were compared among the three shipping classes. The WC ports received greater densities of NIZ and had greater NIZ propagule pressure than EC ports. Within WC vessels, NIZ propagule pressure and density were significantly greater in ICU vessels. TOE vessels on the EC had the greatest NIZ propagule pressure and density. ICU vessels entering Vancouver ports represented the greatest invasion risk to Canadian waters. These vessels likely mediate secondary invasions by facilitating the transport of unexchanged ballast directly from ports previously invaded, whereas short ICU voyage duration enhances organism survivorship and vessels transport NIZ over natural dispersal barriers.

APA, Harvard, Vancouver, ISO, and other styles

34

Hedge, Luke H., Wayne A. O'Connor, and Emma L. Johnston. "Manipulating the intrinsic parameters of propagule pressure: implications for bio-invasion." Ecosphere 3, no. 6 (June 2012): art48. http://dx.doi.org/10.1890/es11-000375.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Catford, Jane A., Peter A. Vesk, Matt D. White, and Brendan A. Wintle. "Hotspots of plant invasion predicted by propagule pressure and ecosystem characteristics." Diversity and Distributions 17, no. 6 (June 20, 2011): 1099–110. http://dx.doi.org/10.1111/j.1472-4642.2011.00794.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Simkanin, Christina, Ian C. Davidson, Thomas W. Therriault, Glen Jamieson, and John F. Dower. "Manipulating propagule pressure to test the invasibility of subtidal marine habitats." Biological Invasions 19, no. 5 (February 20, 2017): 1565–75. http://dx.doi.org/10.1007/s10530-017-1379-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Moulton, Michael P., Wendell P. Cropper, and Andrew J. Broz. "Inconsistencies among secondary sources of Chukar Partridge (Alectoris chukar) introductions to the United States." PeerJ 3 (November 30, 2015): e1447. http://dx.doi.org/10.7717/peerj.1447.

Full text

Abstract:

The propagule pressure hypothesis asserts that the number of individuals released is the key determinant of whether an introduction will succeed or not. It remains to be shown whether propagule pressure is more important than either species-level or site-level factors in determining the fate of an introduction. Studies claiming to show that propagule pressure is the primary determinant of introduction success must assume that the historical record as reported by secondary sources is complete and accurate. Here, examine a widely introduced game bird, the Chukar (Alectoris chukar), to the USA. We compare the records reported by two secondary sources (Long, 1981; Lever, 1987) to those in a primary source (Christensen, 1970) and to a recent study by Sol et al. (2012). Numerous inconsistencies exist in the records reported by Sol et al. (2012), Long (1981) and Lever (1987) when compared to the primary record of Christensen (1970). As reported by Christensen (1970), very large numbers of Chukars were released unsuccessfully in some states. Our results strongly imply that factors other than sheer numbers are more important. Site-to-site differences are the most likely explanation for the variation in success.

APA, Harvard, Vancouver, ISO, and other styles

38

Vaz-Pinto, F., C. Olabarria, and F. Arenas. "Propagule pressure and functional diversity: interactive effects on a macroalgal invasion process." Marine Ecology Progress Series 471 (December 19, 2012): 51–60. http://dx.doi.org/10.3354/meps10024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Peniston, James H. "Digest: Propagule pressure might not matter in the establishment of invasive prokaryotes*." Evolution 74, no. 1 (December 10, 2019): 203–4. http://dx.doi.org/10.1111/evo.13889.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Campbell, Lesley G., Rebecca J. Parker, Graham Blakelock, Natalia Pirimova, and Kristin L. Mercer. "Maternal Environment Influences Propagule Pressure of an Invasive Plant, Raphanus raphanistrum (Brassicaceae)." International Journal of Plant Sciences 176, no. 4 (May 2015): 393–403. http://dx.doi.org/10.1086/680683.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Bradie, Johanna, Corey Chivers, and Brian Leung. "Importing risk: quantifying the propagule pressure-establishment relationship at the pathway level." Diversity and Distributions 19, no. 8 (March 11, 2013): 1020–30. http://dx.doi.org/10.1111/ddi.12081.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Duggan, Ian C., Corinne A. M. Rixon, and Hugh J. MacIsaac. "Popularity and Propagule Pressure: Determinants of Introduction and Establishment of Aquarium Fish." Biological Invasions 8, no. 2 (March 2006): 377–82. http://dx.doi.org/10.1007/s10530-004-2310-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Byun, Chaeho, Sylvie de Blois, and Jacques Brisson. "Interactions between abiotic constraint, propagule pressure, and biotic resistance regulate plant invasion." Oecologia 178, no. 1 (December 28, 2014): 285–96. http://dx.doi.org/10.1007/s00442-014-3188-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Sierocinski, Pawel, Jesica Soria Pascual, Daniel Padfield, Mike Salter, and Angus Buckling. "The impact of propagule pressure on whole community invasions in biomethane-producing communities." iScience 24, no. 6 (June 2021): 102659. http://dx.doi.org/10.1016/j.isci.2021.102659.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Wonham, Marjorie J., Mark A. Lewis, and Hugh J. MacIsaac. "Minimizing invasion risk by reducing propagule pressure: a model for ballast-water exchange." Frontiers in Ecology and the Environment 3, no. 9 (November 2005): 473–78. http://dx.doi.org/10.1890/1540-9295(2005)003[0473:mirbrp]2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Warren, Robert J., Tara Ursell, Ashley D. Keiser, and Mark A. Bradford. "Habitat, dispersal and propagule pressure control exotic plant infilling within an invaded range." Ecosphere 4, no. 2 (February 2013): art26. http://dx.doi.org/10.1890/es12-00393.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Oster, M., and O. Eriksson. "Recruitment in species-rich grasslands: the effects of functional traits and propagule pressure." Journal of Plant Ecology 5, no. 3 (September 2, 2011): 260–69. http://dx.doi.org/10.1093/jpe/rtr027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

St. Clair, Samuel B., and Tara B. B. Bishop. "Loss of biotic resistance and high propagule pressure promote invasive grass‐fire cycles." Journal of Ecology 107, no. 4 (March 12, 2019): 1995–2005. http://dx.doi.org/10.1111/1365-2745.13156.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Clark, Graeme F., and Emma L. Johnston. "Propagule pressure and disturbance interact to overcome biotic resistance of marine invertebrate communities." Oikos 118, no. 11 (November 2009): 1679–86. http://dx.doi.org/10.1111/j.1600-0706.2009.17564.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Potapov, Alex, and Harshana Rajakaruna. "Allee threshold and stochasticity in biological invasions: Colonization time at low propagule pressure." Journal of Theoretical Biology 337 (November 2013): 1–14. http://dx.doi.org/10.1016/j.jtbi.2013.07.031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!