Log in

Relevant bibliographies by topics / Sink population / Journal articles

To see the other types of publications on this topic, follow the link: Sink population.

Journal articles on the topic 'Sink population'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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 'Sink population.'

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

EBERHART-PHILLIPS, LUKE J., and MARK A. COLWELL. "Conservation challenges of a sink: the viability of an isolated population of the Snowy Plover." Bird Conservation International 24, no. 3 (2014): 327–41. http://dx.doi.org/10.1017/s0959270913000506.

Full text

Abstract:

SummarySource-sink dynamics are easily overlooked when formulating recovery objectives for threatened species. This could lead to unrealistic criteria imposed on sink populations, which in turn might restrict an entire metapopulation from being delisted. Therefore, an understanding of the viability of subpopulations within the context of a metapopulation is needed to develop appropriate recovery objectives. Consequently, we used 11 years of mark-recapture, productivity, and movement data to analyse the viability of a small, geographically isolated population of the Snowy PloverCharadrius nivosus, a shorebird listed as threatened under the U.S. Endangered Species Act. Simulations confirmed that the focal population in northern California is a sink that relies upon immigrants from neighbouring populations. Furthermore, these source populations will increase within the next 50 years and are likely to achieve the delisting requirements. However, the northern California population is unlikely to reach the delisting criteria given the current vital rate estimations. Management scenarios demonstrated that lethal predator removal and reducing human disturbance facilitate population recovery and may partially alleviate the reliance upon immigration. However, the use of nest exclosures reduced population growth because they are known to compromise adult survival. These results highlight the importance of maintaining viable source populations and re-evaluating the recovery objectives of metapopulations with active sinks.

APA, Harvard, Vancouver, ISO, and other styles

2

Heinrichs, Julie A., Joshua J. Lawler, Nathan H. Schumaker, Chad B. Wilsey, and Darren J. Bender. "Divergence in sink contributions to population persistence." Conservation Biology 29, no. 6 (2015): 1674–83. http://dx.doi.org/10.1111/cobi.12540.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Gaggiotti, Oscar E. "Population Genetic Models of Source–Sink Metapopulations." Theoretical Population Biology 50, no. 2 (1996): 178–208. http://dx.doi.org/10.1006/tpbi.1996.0028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Zwolak, Rafał, and Kerry R. Foresman. "Deer mouse demography in burned and unburned forest: no evidence for source–sink dynamics." Canadian Journal of Zoology 86, no. 2 (2008): 83–91. http://dx.doi.org/10.1139/z07-126.

Full text

Abstract:

Deer mouse ( Peromyscus maniculatus (Wagner, 1845)) populations increase dramatically after wildfires. These increases are puzzling because there are no obvious food sources or vegetation cover in severely burned areas. We conducted a capture–mark–recapture study of deer mice in a mosaic of burned and unburned montane forests in western Montana to determine if their postfire increase could be explained by source–sink dynamics, with burned areas acting as a sink. When overall mouse densities were very low, the vast majority of the population was found in burned areas. Mice appeared regularly in unburned forest only when the densities were high. This pattern is precisely opposite to the expected results if the sink hypothesis were correct. Moreover, mice in burned areas did not show decreased body mass, reproductive performance, or survival when compared with mice in unburned areas. Age structure and sex ratio did not differ between burned and unburned sites. We conclude that burned areas do not function as population sinks; rather, they represent high-quality habitat for deer mice.

APA, Harvard, Vancouver, ISO, and other styles

5

Munguia, Pablo. "Role of sources and temporal sinks in a marine amphipod." Biology Letters 11, no. 2 (2015): 20140864. http://dx.doi.org/10.1098/rsbl.2014.0864.

Full text

Abstract:

Spatially structured habitats challenge populations to have positive growth rates and species often rely on dispersing propagules to occupy habitats outside their fundamental niche. Most marine species show two main life stages, a dispersing stage and a sedentary stage affecting distribution and abundance patterns. An experimental study on Corophium acherusicum, a colonial tube-building amphipod, showed the strong influence that a source population can have on new habitats. More importantly, this study shows the effect of temporal sinks where newly established populations can show reduced growth rates if the propagule supply from a source is removed. Sink populations had a reduction in abundance and became male-biased as females left colonies. The consequences arising from short-term dispersal and temporal sinks could be due to different selection pressures at the source and sink populations. These consequences can become reflected in long-term dynamics of marine populations if we shift focus to non-random dispersal models incorporating behaviour and stage-dependent dispersal.

APA, Harvard, Vancouver, ISO, and other styles

6

Draheim, Hope M., Jennifer A. Moore, Dwayne Etter, Scott R. Winterstein, and Kim T. Scribner. "Detecting black bear source–sink dynamics using individual-based genetic graphs." Proceedings of the Royal Society B: Biological Sciences 283, no. 1835 (2016): 20161002. http://dx.doi.org/10.1098/rspb.2016.1002.

Full text

Abstract:

Source–sink dynamics affects population connectivity, spatial genetic structure and population viability for many species. We introduce a novel approach that uses individual-based genetic graphs to identify source–sink areas within a continuously distributed population of black bears ( Ursus americanus ) in the northern lower peninsula (NLP) of Michigan, USA. Black bear harvest samples ( n = 569, from 2002, 2006 and 2010) were genotyped at 12 microsatellite loci and locations were compared across years to identify areas of consistent occupancy over time. We compared graph metrics estimated for a genetic model with metrics from 10 ecological models to identify ecological factors that were associated with sources and sinks. We identified 62 source nodes, 16 of which represent important source areas (net flux > 0.7) and 79 sink nodes. Source strength was significantly correlated with bear local harvest density (a proxy for bear density) and habitat suitability. Additionally, resampling simulations showed our approach is robust to potential sampling bias from uneven sample dispersion. Findings demonstrate black bears in the NLP exhibit asymmetric gene flow, and individual-based genetic graphs can characterize source–sink dynamics in continuously distributed species in the absence of discrete habitat patches. Our findings warrant consideration of undetected source–sink dynamics and their implications on harvest management of game species.

APA, Harvard, Vancouver, ISO, and other styles

7

Murphy, Michael T. "Source-Sink Dynamics of a Declining Eastern Kingbird Population and the Value of Sink Habitats." Conservation Biology 15, no. 3 (2001): 737–48. http://dx.doi.org/10.1046/j.1523-1739.2001.015003737.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Robinson, Hugh S., Robert B. Wielgus, Hilary S. Cooley, and Skye W. Cooley. "SINK POPULATIONS IN CARNIVORE MANAGEMENT: COUGAR DEMOGRAPHY AND IMMIGRATION IN A HUNTED POPULATION." Ecological Applications 18, no. 4 (2008): 1028–37. http://dx.doi.org/10.1890/07-0352.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Donker, Scott A., and Charles J. Krebs. "Evidence for source - sink dynamics in a regional population of arctic ground squirrels (Urocitellus parryii plesius)." Wildlife Research 39, no. 2 (2012): 163. http://dx.doi.org/10.1071/wr11167.

Full text

Abstract:

Context Variable demographic rates can manifest themselves between habitat types in the form of source–sink dynamics where populations in sink habitats would not exist without the addition of migrants from source habitats. Aims Arctic ground squirrels (Urocitellus parryii pleisus (Osgood, 1900)) occupy a large geographic area in northern Canada and live in a variety of habitat types, including boreal forest, low-elevation meadows and alpine meadows, providing an opportunity to investigate the possible existence of source–sink dynamics. Methods We hypothesised that arctic ground squirrels in the south-western Yukon exhibit demographic characteristics indicative of source–sink dynamics. Boreal forest habitat could be a sink in spite of previous high squirrel densities, whereas meadows could be a source. We investigated this by mark–recapture live-trapping and radio-telemetry. Key Results In the boreal forest in the Kluane region, we found reduced recruitment, reduced population growth rates (λ), and reduced survivorship for radio-collared individuals that moved from low-elevation meadows into the boreal forest. There was no evidence from radio-collared juveniles of dispersal from high-density ground squirrel populations in alpine meadows down into boreal forest. Conclusions Boreal forest is a sink habitat for arctic ground squirrels. Source–sink dynamics observed between low-elevation meadow and boreal forest habitats appear to result from increased predation pressure in the boreal forest. The result has been a near extirpation of boreal forest arctic ground squirrels in the Kluane region since 1998. Implications Because the source areas of low-elevation meadows occupy only 7–9% of the lowland habitat, recolonisation of boreal forest sites has been very slow. Whereas alpine populations remain high in 2011, boreal forest populations remain near zero. Alpine populations do not appear to be a source for the boreal forest.

APA, Harvard, Vancouver, ISO, and other styles

10

Xiao, Zeping, Manyu Bi, Yexi Zhong, Xinghua Feng, and Hongzhi Ma. "Study on the Evolution of the Source-Flow-Sink Pattern of China’s Chunyun Population Migration Network: Evidence from Tencent Big Data." Urban Science 5, no. 3 (2021): 66. http://dx.doi.org/10.3390/urbansci5030066.

Full text

Abstract:

We construct a comprehensive analysis framework of population flow in China. To do so, we take prefecture-level administrative regions as the basic research unit of population flow and use source-sink theory and flow space theory. Additionally, we reveal the dynamic differentiation of population flow patterns and the evolution of population source-flow-sink systems. We try to provide a theoretical basis for the formulation of population development policies and regional spatial governance. The results show the following: (1) The Hu Huanyong Line has a strong spatial lock-in effect on population flow. Additionally, provincial capital cities, headed by Hangzhou, Nanjing, and Hefei, have played an increasingly prominent role in population flow. (2) The developed eastern coastal areas have undertaken China’s main population outflow. The net population flow is spatially high in the middle of the region and low on the two sides, exhibiting an “inverted U-shaped” pattern. Furthermore, the borders of the central provinces form a continuous population inflow area. (3) The hierarchical characteristics of the population flow network are obvious. Strong connections occur between developed cities, and the effect of distance attenuation is weakened. The medium connection network is consistent with the traffic skeleton, and population flow exhibits a strong “bypass effect”. (4) The source and sink areas are divided into four regions similar to China’s three major economic belts. The 10 regions can be refined to identify the main population source and sink regions, and the 18 regions can basically reflect China’s level of urbanization. The network of the population flow source-flow-sink system exhibits notable nesting characteristics. As a result, it creates a situation in which the source areas on both sides of the east and the west are convective to the middle. The hierarchical differentiation of the source-flow sink system is related to the differences between the east and the west and between the north and the south, as well as local differences in China.

APA, Harvard, Vancouver, ISO, and other styles

11

Layton-Matthews, Kate, Michael Griesser, Christophe F. D. Coste, and Arpat Ozgul. "Forest management affects seasonal source-sink dynamics in a territorial, group-living bird." Oecologia 196, no. 2 (2021): 399–412. http://dx.doi.org/10.1007/s00442-021-04935-6.

Full text

Abstract:

AbstractThe persistence of wildlife populations is under threat as a consequence of human activities, which are degrading natural ecosystems. Commercial forestry is the greatest threat to biodiversity in boreal forests. Forestry practices have degraded most available habitat, threatening the persistence of natural populations. Understanding population responses is, therefore, critical for their conservation. Population viability analyses are effective tools to predict population persistence under forestry management. However, quantifying the mechanisms driving population responses is complex as population dynamics vary temporally and spatially. Metapopulation dynamics are governed by local dynamics and spatial factors, potentially mediating the impacts of forestry e.g., through dispersal. Here, we performed a seasonal, spatially explicit population viability analysis, using long-term data from a group-living territorial bird (Siberian jay, Perisoreus infaustus). We quantified the effects of forest management on metapopulation dynamics, via forest type-specific demography and spatially explicit dispersal, and how forestry impacted the stability of metapopulation dynamics. Forestry reduced metapopulation growth and stability, through negative effects on reproduction and survival. Territories in higher quality natural forest contributed more to metapopulation dynamics than managed forests, largely through demographic processes rather than dispersal. Metapopulation dynamics in managed forest were also less resilient to disturbances and consequently, may be more vulnerable to environmental change. Seasonal differences in source-sink dynamics observed in managed forest, but not natural forests, were caused by associated seasonal differences in dispersal. As shown here, capturing seasonal source-sink dynamics allows us to predict population persistence under human disturbance and to provide targeted conservation recommendations.

APA, Harvard, Vancouver, ISO, and other styles

12

Remes, Vladimi'r. "How can maladaptive habitat choice generate source-sink population dynamics?" Oikos 91, no. 3 (2000): 579–82. http://dx.doi.org/10.1034/j.1600-0706.2000.910320.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Carroll, Emma L., Ailsa Hall, Morten Tange Olsen, Aubrie B. Onoufriou, Oscar E. Gaggiotti, and Debbie JF Russell. "Perturbation drives changing metapopulation dynamics in a top marine predator." Proceedings of the Royal Society B: Biological Sciences 287, no. 1928 (2020): 20200318. http://dx.doi.org/10.1098/rspb.2020.0318.

Full text

Abstract:

Metapopulation theory assumes a balance between local decays/extinctions and local growth/new colonisations. Here we investigate whether recent population declines across part of the UK harbour seal range represent normal metapopulation dynamics or are indicative of perturbations potentially threatening the metapopulation viability, using 20 years of population trends, location tracking data ( n = 380), and UK-wide, multi-generational population genetic data ( n = 269). First, we use microsatellite data to show that two genetic groups previously identified are distinct metapopulations: northern and southern. Then, we characterize the northern metapopulation dynamics in two different periods, before and after the start of regional declines (pre-/peri-perturbation). We identify source–sink dynamics across the northern metapopulation, with two putative source populations apparently supporting three likely sink populations, and a recent metapopulation-wide disruption of migration coincident with the perturbation. The northern metapopulation appears to be in decay, highlighting that changes in local populations can lead to radical alterations in the overall metapopulation's persistence and dynamics.

APA, Harvard, Vancouver, ISO, and other styles

14

Ward, David, and James N. M. Smith. "Brown-Headed Cowbird Parasitism Results in a Sink Population in Warbling Vireos." Auk 117, no. 2 (2000): 337–44. http://dx.doi.org/10.1093/auk/117.2.337.

Full text

Abstract:

Abstract The Warbling Vireo (Vireo gilvus) is one of the most heavily parasitized host species of the Brown-headed Cowbird (Molothrus ater), suffering up to 80% parasitism in some areas. Warbling Vireo nests that are parasitized by cowbirds typically produce no vireo young. To make predictions about the consequences of brood parasitism on local host populations, we investigated factors that allow such high parasitism to occur. The major factors leading to high levels of brood parasitism on Warbling Vireos in the Okanagan Valley, British Columbia, are habitat overlap with cowbirds and the lack of response of vireos to cowbird eggs. Warbling Vireos responded more strongly to a cowbird dummy placed near the nest than to a dummy of a “neutral” species (junco) or to a common nest predator (crow). Preliminary simulation models based on population parameters obtained from three summers of fieldwork suggest that Warbling Vireos are in danger of extirpation from the Okanagan Valley if little movement of birds occurs between areas with different levels of brood parasitism. The models also indicate the sensitivity of this species to variation in adult and juvenile survival rates and number of successful broods produced per season. Our results emphasize the need for a metapopulation analysis that compares the population ecology of Warbling Vireos at high elevations (and probably with low parasitism) with that at low elevations (high parasitism) and that ascertains whether sufficient dispersal occurs between these populations to prevent extinction at lower elevations. Sufficient dispersal is indicated by apparently stable vireo populations in the Okanagan Valley and by Breeding Bird Survey data that show an overall increasing trend for this species in British Columbia.

APA, Harvard, Vancouver, ISO, and other styles

15

Cresswell, James E. "Towards the theory of pollinator–mediated gene flow." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 358, no. 1434 (2003): 1005–8. http://dx.doi.org/10.1098/rstb.2003.1286.

Full text

Abstract:

I present a new exposition of a model of gene flow by animal–mediated pollination between a source population and a sink population. The model's parameters describe two elements: (i) the expected portion of the source's paternity that extends to the sink population; and (ii) the dilution of this portion by within–sink pollinations. The model is termed the portion–dilution model (PDM). The PDM is a parametric restatement of the conventional view of animal–mediated pollination. In principle, it can be applied to plant species in general. I formulate a theoretical value of the portion parameter that maximizes gene flow and prescribe this as a benchmark against which to judge the performance of real systems. Existing foraging theory can be used in solving part of the PDM, but a theory for source–to–sink transitions by pollinators is currently elusive.

APA, Harvard, Vancouver, ISO, and other styles

16

Hardy, Sarah M., Craig R. Smith, and Andreas M. Thurnherr. "Can the source–sink hypothesis explain macrofaunal abundance patterns in the abyss? A modelling test." Proceedings of the Royal Society B: Biological Sciences 282, no. 1808 (2015): 20150193. http://dx.doi.org/10.1098/rspb.2015.0193.

Full text

Abstract:

Low food availability is a major structuring force in deep-sea benthic communities, sustaining only very low densities of organisms in parts of the abyss. These low population densities may result in an Allee effect, whereby local reproductive success is inhibited, and populations are maintained by larval dispersal from bathyal slopes. This slope–abyss source–sink (SASS) hypothesis suggests that the abyssal seafloor constitutes a vast sink habitat with macrofaunal populations sustained only by an influx of larval ‘refugees' from source areas on continental slopes, where higher productivity sustains greater population densities. Abyssal macrofaunal population densities would thus be directly related to larval inputs from bathyal source populations. We evaluate three predictions derived from the SASS hypothesis: (i) slope-derived larvae can be passively transported to central abyssal regions within a single larval period, (ii) projected larval export from slopes to the abyss reproduces global patterns of macrofaunal abundance and (iii) macrofaunal abundance decreases with distance from the continental slope. We find that abyssal macrofaunal populations are unlikely to be sustained solely through influx of larvae from slope sources. Rather, local reproduction probably sustains macrofaunal populations in relatively high-productivity abyssal areas, which must also be considered as potential larval source areas for more food-poor abyssal regions.

APA, Harvard, Vancouver, ISO, and other styles

17

Vincenzi, Simone, Dušan Jesenšek, and Alain J. Crivelli. "A framework for estimating the determinants of spatial and temporal variation in vital rates and inferring the occurrence of unobserved extreme events." Royal Society Open Science 5, no. 3 (2018): 171087. http://dx.doi.org/10.1098/rsos.171087.

Full text

Abstract:

We develop a general framework that combines long-term tag–recapture data and powerful statistical and modelling techniques to investigate how population, environmental and climate factors determine variation in vital rates and population dynamics in an animal species, using as a case study the population of brown trout living in Upper Volaja (Western Slovenia). This population has been monitored since 2004. Upper Volaja is a sink, receiving individuals from a source population living above a waterfall. We estimate the numerical contribution of the source population on the sink population and test the effects of temperature, population density and extreme events on variation in vital rates among 2647 individually tagged brown trout. We found that individuals dispersing downstream from the source population help maintain high population densities in the sink population despite poor recruitment. The best model of survival for individuals older than juveniles includes additive effects of birth cohort and sampling occasion. Fast growth of older cohorts and higher population densities in 2004–2005 suggest very low population densities in the late 1990s, which we hypothesize were caused by a flash flood that strongly reduced population size and created the habitat conditions for faster individual growth and transient higher population densities after the extreme event.

APA, Harvard, Vancouver, ISO, and other styles

18

Virgl, John A., and François Messier. "Assessment of source-sink theory for predicting demographic rates among habitats that exhibit temporal changes in quality." Canadian Journal of Zoology 78, no. 8 (2000): 1483–93. http://dx.doi.org/10.1139/z00-066.

Full text

Abstract:

Within the framework of Pulliam's source-sink model we tested predictions of habitat-specific demography on a "closed" population of muskrats (Ondatra zibethicus L.) occupying three contiguous habitats that exhibited temporal changes in quality and quantity. We were able to distinguish between dispersal among habitats and mortality within each habitat, and induce temporal variation in operational-habitat availability and suitability by manipulating water level. Temporal variation in population size and density among habitats supported the source-sink model and was primarily associated with habitat-specific survival rates. For example, the mean annual over-winter mortality rate of individuals in the principal source habitat (0.87) was less than in the sink habitat (0.94), and subsequently the mean annual finite rate of increase (λ) was positive in the source habitat (λ = 1.41) and negative in the sink habitat (λ = 0.90). The high recruitment rate of juveniles in the prime habitat during autumn was also associated with significant emigration of juveniles from this habitat. Emigration of adults among habitats provided support for the role of spacing behaviour in regulating the breeding density of muskrats in prime habitat. However, in contrast to the assumption of source-sink theory, year-to-year variation in survival rate in the more marginal habitats appeared to be explained more by temporal changes in habitat suitability than by density. Significant emigration of juveniles from the sink habitat was not predicted and was largely dependent on current habitat conditions. In addition, the mean annual emigration rate was lowest in the principal source habitat (0.30) and highest in the more marginal habitats (0.62). Failure to detect directional emigration from prime to marginal habitats in the spring, as predicted by the source-sink model, was likely due to declining local population size. In environments where spatial differences in habitat quality are not static, and annual change in local population size is largely independent of density, current source-sink models must be modified to better predict individual dispersal strategies.

APA, Harvard, Vancouver, ISO, and other styles

19

Puffer, Michael, Ole Kristian Berg, Frøydis Bolme Hamnes, et al. "Density-independent use of shallow riverine areas in juvenile Atlantic salmon." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 7 (2019): 1161–70. http://dx.doi.org/10.1139/cjfas-2017-0500.

Full text

Abstract:

Habitat use of aquatic organisms is essential to evaluate effects of many environmental challenges like effects of hydropower regulation, where stranding may occur under hydropeaking (rapid dewatering of shallow river areas). Experimental studies as well as observations from nature with juvenile Atlantic salmon (Salmo salar) show that the proportion of the population that uses shallow depth was both independent of population density and decreases with fish size. Experiments were conducted both in the presence and in absence of older fish, during day and night, and during all four seasons. Juvenile salmon from deep areas may therefore distribute into the shallow areas even when fish density becomes reduced. Thus, low density does not lead to reduced stranding risk, and shallow areas may therefore function as a sink in a within-generation source–sink dynamic under a repeated hydropeaking scenario. The sink effect of rapid dewatering in shallow areas may be mitigated by seasonal and diurnal regulation of hydropeaking activity, but dewatering may still result in extinction of weak populations.

APA, Harvard, Vancouver, ISO, and other styles

20

Holmes, Andrew J., Peter Roslev, Ian R. McDonald, Niels Iversen, Kaj Henriksen, and J. Colin Murrell. "Characterization of Methanotrophic Bacterial Populations in Soils Showing Atmospheric Methane Uptake." Applied and Environmental Microbiology 65, no. 8 (1999): 3312–18. http://dx.doi.org/10.1128/aem.65.8.3312-3318.1999.

Full text

Abstract:

ABSTRACT The global methane cycle includes both terrestrial and atmospheric processes and may contribute to feedback regulation of the climate. Most oxic soils are a net sink for methane, and these soils consume approximately 20 to 60 Tg of methane per year. The soil sink for atmospheric methane is microbially mediated and sensitive to disturbance. A decrease in the capacity of this sink may have contributed to the ∼1% · year−1 increase in the atmospheric methane level in this century. The organisms responsible for methane uptake by soils (the atmospheric methane sink) are not known, and factors that influence the activity of these organisms are poorly understood. In this study the soil methane-oxidizing population was characterized by both labelling soil microbiota with14CH4 and analyzing a total soil monooxygenase gene library. Comparative analyses of [14C]phospholipid ester-linked fatty acid profiles performed with representative methane-oxidizing bacteria revealed that the soil sink for atmospheric methane consists of an unknown group of methanotrophic bacteria that exhibit some similarity to type II methanotrophs. An analysis of monooxygenase gene libraries from the same soil samples indicated that an unknown group of bacteria belonging to the α subclass of the class Proteobacteria was present; these organisms were only distantly related to extant methane-oxidizing strains. Studies on factors that affect the activity, population dynamics, and contribution to global methane flux of “atmospheric methane oxidizers” should be greatly facilitated by use of biomarkers identified in this study.

APA, Harvard, Vancouver, ISO, and other styles

21

Chen, Kun, Lorenzo Ciannelli, Mary Beth Decker, et al. "Reconstructing Source-Sink Dynamics in a Population with a Pelagic Dispersal Phase." PLoS ONE 9, no. 5 (2014): e95316. http://dx.doi.org/10.1371/journal.pone.0095316.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Weegman, Mitch D., Stuart Bearhop, Anthony D. Fox, et al. "Integrated population modelling reveals a perceived source to be a cryptic sink." Journal of Animal Ecology 85, no. 2 (2016): 467–75. http://dx.doi.org/10.1111/1365-2656.12481.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

McBain, Andrew J., Robert G. Bartolo, Carl E. Catrenich, et al. "Exposure of Sink Drain Microcosms to Triclosan: Population Dynamics and Antimicrobial Susceptibility." Applied and Environmental Microbiology 69, no. 9 (2003): 5433–42. http://dx.doi.org/10.1128/aem.69.9.5433-5442.2003.

Full text

Abstract:

ABSTRACT Recent concern that the increased use of triclosan (TCS) in consumer products may contribute to the emergence of antibiotic resistance has led us to examine the effects of TCS dosing on domestic-drain biofilm microcosms. TCS-containing domestic detergent (TCSD) markedly lowered biofouling at 50% (wt/vol) but was poorly effective at use levels. Long-term microcosms were established and stabilized for 6 months before one was subjected to successive 3-month exposures to TCSD at sublethal concentrations (0.2 and 0.4% [wt/vol]). Culturable bacteria were identified by 16S rDNA sequence analysis, and their susceptibilities to four biocides and six antibiotics were determined. Microcosms harbored ca. 10 log10 CFU/g of biofilm, representing at least 27 species, mainly gamma proteobacteria, and maintained dynamic stability. Viable cell counts were largely unaffected by TCSD exposure, but species diversity was decreased, as corroborated by denaturing gradient gel electrophoresis analysis. TCS susceptibilities ranged widely within bacterial groups, and TCS-tolerant strains (including aeromonads, pseudomonads, stenotrophomonads, and Alcaligenes spp.) were isolated before and after TCSD exposure. Several TCS-tolerant bacteria related to Achromobacter xylosoxidans became clonally expanded during dosing. TCSD addition did not significantly affect the community profiles of susceptibility to the test biocides or antibiotics. Several microcosm isolates, as well as reference bacteria, caused clearing of particulate TCS in solid media. Incubations of consortia and isolates with particulate TCS in liquid led to putative TCS degradation by the consortia and TCS solubilization by the reference strains. Our results support the view that low-level exposure of environmental microcosms to TCS does not affect antimicrobial susceptibility and that TCS is degradable by common domestic biofilms.

APA, Harvard, Vancouver, ISO, and other styles

24

Franzén, Markus, and Sven G. Nilsson. "High population variability and source–sink dynamics in a solitary bee species." Ecology 94, no. 6 (2013): 1400–1408. http://dx.doi.org/10.1890/11-2260.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Mira, Óscar, Cristina B. Sánchez-Prieto, Deborah A. Dawson, Terry Burke, Alberto Tinaut, and Juan G. Martínez. "Parnassius apollo nevadensis: identification of recent population structure and source–sink dynamics." Conservation Genetics 18, no. 4 (2017): 837–51. http://dx.doi.org/10.1007/s10592-017-0931-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Sisterson, Mark S., Yves Carrière, Timothy J. Dennehy, and Bruce E. Tabashnik. "Nontarget Effects of Transgenic Insecticidal Crops: Implications of Source-Sink Population Dynamics." Environmental Entomology 36, no. 1 (2007): 121–27. http://dx.doi.org/10.1603/0046-225x(2007)36[121:neotic]2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Krohne, David T. "Demographic characteristics of Peromyscus leucopus inhabiting a natural dispersal sink." Canadian Journal of Zoology 67, no. 9 (1989): 2321–25. http://dx.doi.org/10.1139/z89-325.

Full text

Abstract:

The population biology of white-footed mice (Peromyscus leucopus) inhabiting a 1.4-ha naturally occurring dispersal sink was studied for 5 years in west-central Indiana and compared with that in surrounding old-growth habitat. Densities in the dispersal sink were consistently lower than in prime habitat. Autumn and winter survival were practically nil. The sink was recolonized by adults in the spring following extreme low winter densities or extinction. Summer reproductive rates and the pattern of territoriality were similar to those in prime habitat. Mice colonized elsewhere when empty prime habitat was made experimentally available. The data suggest that few dispersing mice can be accommodated by the dispersal sink.

APA, Harvard, Vancouver, ISO, and other styles

28

Ma, Zhishan, Susu Zhang, and Sidong Zhao. "Study on the Spatial Pattern of Migration Population in Egypt and Its Flow Field Characteristics from the Perspective of “Source-Flow-Sink”." Sustainability 13, no. 1 (2021): 350. http://dx.doi.org/10.3390/su13010350.

Full text

Abstract:

Based on the provinces as the spatial nodes of population migration, a “Source-Flow-Sink” analysis framework of population migration flow in Egypt was established by “Source-Sink” Theory and Flow Field Theory to study the migration population in Egypt. It reveals the spatial pattern of the migration population in Egypt and its flow field characteristics and provides theoretical basis for the formulation of population development policies and regional spatial governance planning. The results show that: (1) there are significant spatial differences in the size and rate of migration in Egypt. In 2017, the migration population in Egypt exceeded 2.2 million in total, with a migration rate of 2.33%, and the extreme multiple reached 80 and 12. (2) According to the spatial pattern of geographical distribution, the Source System is divided into five types: axis type, layer type, fan type, oblique symmetry type, and scattered jump type. There are only three types in Sink System, namely wide area coverage type, local development type, and scattered jump type. Source Places lie in the middle, Sink Places are symmetrical from east to west, and Exchange Places are concentrated along the Mediterranean coast in the north of Cairo on the whole, with the initial formation of a “core-periphery” spatial pattern. (3) The interprovincial population migration flow in Egypt is dominated by neighborhood penetration and polarization of high-rank nodes (capitals or regional economic centers), giving rise to 7 modes of central system spatial structures and 3 modes of pole-core interaction. The central system of flow fields with clear priorities and the streamline channel network with layered trunks and branches basically take shape, overall characterized by stepped runoff from east to west, and local convection from south to north.

APA, Harvard, Vancouver, ISO, and other styles

29

O'Connell, Bev O., and Joan Ostaszkiewicz. "Sink or swim — ageing in Australia." Australian Health Review 29, no. 2 (2005): 146. http://dx.doi.org/10.1071/ah050146.

Full text

Abstract:

As the number of people under the age of 65 declines, the number over 65 will double in the next half century. By 2031, it is estimated those over 65 will account for more than a quarter of the Australian population. The fastest rate of growth will be in the over-85-years category, projected to double over the next 20 years and to triple over 50 years to include 2.3 million people. Health care providers cannot afford to wait for the inevitable crises this vast demographic shift will provoke. To meet these future demands, educational and health care institutes should consider establishing interdisciplinary think-tanks for multidisciplinary research, policy development and innovations in aged care and health service delivery.

APA, Harvard, Vancouver, ISO, and other styles

30

Claessen, David, Anneke S. de Vos, and André M. de Roos. "Bioenergetics, overcompensation, and the source–sink status of marine reserves." Canadian Journal of Fisheries and Aquatic Sciences 66, no. 7 (2009): 1059–71. http://dx.doi.org/10.1139/f09-061.

Full text

Abstract:

One of the hypothesized functions of marine protected areas (MPAs) is to serve as sources of biomass, with biomass spilling over from the reserve into neighbouring, harvested areas. We argue that the net larval flow (from or to the marine reserve) depends on between-area differences in the population-level biomass production rate, whereas the direction of adult flow depends on differences in the biomass standing stock. Hence, an important question is whether population-level biomass production increases (overcompensation) or decreases (undercompensation) with increased per capita mortality. We show that in a consumer–resource context, the source–sink status of an MPA may depend on the details of the individual-level bioenergetics, as well as on the dispersal rates of larvae and adults. We compare two classic bioenergetic models (net-production vs. gross-production allocation). The net-production model predicts that population-level reproduction may increase with mortality (overcompensation), whereas gross-production allocation always results in undercompensation. We show that models often implicitly assume gross-production allocation, thus potentially overestimating the capacity of MPAs to source unprotected areas. We briefly discuss results of two other models (a simplified, logistic model and a size-structured model), suggesting that the relation between overcompensation and the larval sink status of MPAs is general.

APA, Harvard, Vancouver, ISO, and other styles

31

Hindar, Kjetil, Jarle Tufto, Leif Magnus Sættem, and Torveig Balstad. "Conservation of genetic variation in harvested salmon populations." ICES Journal of Marine Science 61, no. 8 (2004): 1389–97. http://dx.doi.org/10.1016/j.icesjms.2004.08.011.

Full text

Abstract:

Abstract Management of a group of Atlantic salmon (Salmo salar) populations that are harvested together in the ocean, but separately in freshwater, is looked at from a genetic perspective. A model that estimates total effective population size from local effective population sizes and migration patterns is applied to a system of ten salmon populations in the Sognefjorden district, western Norway. This population system is dominated numerically by the River Lærdalselva population, which may act as a source of migrants into nine smaller populations in a “source–sink” metapopulation. The total effective population size of this system is to a large extent dependent on the effective population size of the Lærdalselva population, but the contribution per spawner to the total effective population size is greater for a fish from the smaller populations than for a fish from Lærdalselva. The results are discussed in light of conservation genetic theory, and empirical results on the fitness consequences of loss of genetic variation in salmonids. The genetic consequences of harvesting need to be assessed both at the levels of local populations and the metapopulation.

APA, Harvard, Vancouver, ISO, and other styles

32

Cronin, James T. "FROM POPULATION SOURCES TO SIEVES: THE MATRIX ALTERS HOST–PARASITOID SOURCE–SINK STRUCTURE." Ecology 88, no. 12 (2007): 2966–76. http://dx.doi.org/10.1890/07-0070.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Egli, D. B. "Is There a Role for Sink Size in Understanding Maize Population-Yield Relationships?" Crop Science 55, no. 6 (2015): 2453–62. http://dx.doi.org/10.2135/cropsci2015.04.0227.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Breininger, David R., and Donna M. Oddy. "DO HABITAT POTENTIAL, POPULATION DENSITY, AND FIRES INFLUENCE SCRUB-JAY SOURCE–SINK DYNAMICS?" Ecological Applications 14, no. 4 (2004): 1079–89. http://dx.doi.org/10.1890/03-5002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Brawn, Jeffrey D., and Scott K. Robinson. "Source-Sink Population Dynamics may Complicate the Interpretation of Long- Term Census Data." Ecology 77, no. 1 (1996): 3–12. http://dx.doi.org/10.2307/2265649.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Kadmon, Ronen, and Katja Tielborger. "Testing for Source-Sink Population Dynamics: An Experimental Approach Exemplified with Desert Annuals." Oikos 86, no. 3 (1999): 417. http://dx.doi.org/10.2307/3546647.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Anderson, Jill T., Jed P. Sparks, and Monica A. Geber. "Phenotypic plasticity despite source-sink population dynamics in a long-lived perennial plant." New Phytologist 188, no. 3 (2010): 856–67. http://dx.doi.org/10.1111/j.1469-8137.2010.03404.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Nystrand, Magdalena, Michael Griesser, Sönke Eggers, and Jan Ekman. "Habitat-specific demography and source-sink dynamics in a population of Siberian jays." Journal of Animal Ecology 79, no. 1 (2010): 266–74. http://dx.doi.org/10.1111/j.1365-2656.2009.01627.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Breininger, David R., and Geoffrey M. Carter. "TERRITORY QUALITY TRANSITIONS AND SOURCE–SINK DYNAMICS IN A FLORIDA SCRUB-JAY POPULATION." Ecological Applications 13, no. 2 (2003): 516–29. http://dx.doi.org/10.1890/1051-0761(2003)013[0516:tqtass]2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Gwathmey, C. O., and J. D. Clement. "Alteration of cotton source–sink relations with plant population density and mepiquat chloride." Field Crops Research 116, no. 1-2 (2010): 101–7. http://dx.doi.org/10.1016/j.fcr.2009.11.019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Richardson, T. L., R. W. Turner, and J. J. Miller. "Action-potential discharge in hippocampal CA1 pyramidal neurons: current source-density analysis." Journal of Neurophysiology 58, no. 5 (1987): 981–96. http://dx.doi.org/10.1152/jn.1987.58.5.981.

Full text

Abstract:

1. The site of origin of evoked action-potential discharge in hippocampal CA1 pyramidal neurons was investigated using the in vitro rat hippocampal slice preparation. 2. Action-potential discharge in pyramidal cells was evoked by stimulation of efferent pyramidal cell fibers in the alveus (antidromic) or afferent synaptic inputs in stratum oriens (SO) or stratum radiatum (SR). Laminar profiles of evoked extracellular field potentials were recorded at 25-micron intervals along the entire dendrosomatic axis of the pyramidal cell and a one-dimensional current source-density analysis was applied. 3. Suprathreshold stimulation of the alveus evoked an antidromic population spike response and current sink with the shortest peak latency in stratum pyramidale or proximal stratum oriens. A biphasic positive/negative potential associated with a current source/sink was recorded in dendritic regions, with both components increasing in peak latency with distance from the border of stratum pyramidale. 4. Suprathreshold stimulation of SO or SR evoked a population spike response superimposed upon the underlying synaptic depolarization at all levels of the dendrosomatic axis. The shortest latency population spike and current sink were recorded in stratum pyramidale or proximal stratum oriens. In dendritic regions, a biphasic positive/negative potential and current source/sink conducted with increasing latency from the border of stratum pyramidale. 5. A direct comparison of alvear- and SR-evoked responses revealed a basic similarity in population spike potentials and associated sink/source relationships at both the somatic and dendritic level and a similar shift in peak latency of spike components along the pyramidal cell axis. 6. It is concluded that the initial site for generation of a spike along the dendrosomatic axis of the pyramidal cell following antidromic or orthodromic stimulation is in the region of the cell body layer (soma or axon hillock). Action-potential discharge in dendritic regions then occurs as the result of a subsequent retrograde spike invasion of basal and apical dendritic arborizations.

APA, Harvard, Vancouver, ISO, and other styles

42

Upper, Christen D., Susan S. Hirano, Kimberly K. Dodd, and Murray K. Clayton. "Factors that Affect Spread of Pseudomonas syringae in the Phyllosphere." Phytopathology® 93, no. 9 (2003): 1082–92. http://dx.doi.org/10.1094/phyto.2003.93.9.1082.

Full text

Abstract:

Successful spread of an organism to a new habitat requires both immigration to and growth on that habitat. Field experiments were conducted to determine the relative roles of dispersal (i.e., immigration) and bacterial multiplication in spread of Pseudomonas syringae pv. syringae in the phyllosphere. To study spread, individual plots consisted of three nested concentric squares with the inner 6 m2 planted to snap beans serving as the sink. Each sink, in turn, was surrounded by a barrier zone, usually 6 m wide, which was surrounded by a 6-m-wide source area. The source areas were planted with snap bean seeds inoculated with doubly marked strains derived from wild-type P. syringae pv. syringae B728a. The treatments were designed to test the effects of the nature and width of the barrier zone and suitability of the habitat in the sinks on spread of P. syringae pv. syringae. The marked strains introduced into the source areas at the time of planting were consistently detected in sink areas within a day or two after emergence of bean seedlings in the sources as assessed by leaf imprinting and dilution plating. The amounts of spread (population sizes of the marked strain in sinks) across barrier zones planted to snap bean (a suitable habitat for growth of P. syringae pv. syringae), soybean (not a favorable habitat for P. syringae pv. syringae), and bare ground were not significantly different. Thus, the nature of the barrier had no measurable effect on spread. Similarly, spread across bare-ground barriers 20 m wide was not significantly different from that across barriers 6 m wide, indicating that distance on this scale was not a major factor in determining the amount of spread. The suitability of the sink for colonization by P. syringae pv. syringae had a measurable effect on spread. Spread to sinks planted to clean seed was greater than that to sinks planted with bean seeds inoculated with a slurry of pulverized brown spot diseased bean leaves, sinks planted 3 weeks before sources, and sinks planted to a snap bean cultivar that does not support large numbers of P. syringae pv. syringae. Based of these results, we conclude that the small amount of dispersal that occurred on the scale studied was sufficient to support extensive spread, and suitability of the habitat for multiplication of P. syringae pv. syringae strongly influenced the amount of spread.

APA, Harvard, Vancouver, ISO, and other styles

43

Buck, Melissa, Michael Antunes, Brewster Kingham, Shawn W. Polson, and Stephen C. Eppes. "590. Reduction of Endotracheal Colonization by Gram-Negative Bacilli in a Neonatal Intensive Care Unit Through Use of a Novel Drain Cover." Open Forum Infectious Diseases 6, Supplement_2 (2019): S279. http://dx.doi.org/10.1093/ofid/ofz360.659.

Full text

Abstract:

Abstract Background Splash and aerosolization from sink drains are a source of contamination, particularly by Gram-negative bacilli (GNB), in healthcare facilities. Neonatal Intensive Care Unit (NICU) outbreaks of infection due to GNB have been attributed to NICU sinks. Recent studies found that a dome-shaped drain cover placed in sinks in an adult ICU prevented dispersal of sink drain bacteria to the environment and hands of healthcare providers. Our NICU routinely performs weekly surveillance cultures of all endotracheal tubes (ETT) and has previously reported a correlation of ETT colonizing organisms with bacteria isolated from blood in late onset sepsis. Our objective was to determine whether the use of a drain cover in every sink in a level III 72 bed NICU could lead to a decrease in the isolation of GNB in the ETTs of hospitalized infants. Methods All 34 sink drains and basins in an open layout NICU were cultured. Drain covers were then installed and replaced on a routine basis. Weekly endotracheal tube cultures were performed for all intubated infants. Results Prior to implementation of drain covers, the most common GNBs cultured from ETTs were, in order, E. cloacae, Klebsiella spp., Acinetobacter spp., and S. maltophilia. The most common organisms isolated from sinks were, in order, P. aeruginosa, Acinetobacter spp. and S. maltophilia. An unusual species, Acinetobacter ursingii, was common in both sinks and endotracheal tubes. Before and after the implementation of drain covers, the median time to first isolation of a GNB was 14 and 17 days, respectively. Prior to draining cover implementation, there were 31 new GNB isolates during 700 ventilator days (rate of 44.3/1000 ventilator days) among infants with any positive ETT cultures. Post drain cover there were 26 new GNB isolates during 900 ventilator days (rate of 28.9/1000 ventilator days). There was a shift in microbial species isolated from ETTs with Klebsiella spp. and S. marcescens predominating after implementation of drain covers. Conclusion The use of a novel drain cover in the sinks in a NICU can reduce the frequency of GNB colonizing the ETTs of patients and can lengthen the time to first positivity. Mitigating sinks as a reservoir for GNB may reduce the likelihood of these bacteria infecting a vulnerable population. Disclosures All authors: No reported disclosures.

APA, Harvard, Vancouver, ISO, and other styles

44

Husemann, M., L. Cousseau, T. Callens, et al. "Post-fragmentation population structure in a cooperative breeding Afrotropical cloud forest bird: emergence of a source-sink population network." Molecular Ecology 24, no. 6 (2015): 1172–87. http://dx.doi.org/10.1111/mec.13105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Rao, R. V., and R. B. Pawar. "Quasi-oppositional-based Rao algorithms for multi-objective design optimization of selected heat sinks." Journal of Computational Design and Engineering 7, no. 6 (2020): 830–63. http://dx.doi.org/10.1093/jcde/qwaa060.

Full text

Abstract:

Abstract In this paper, an endeavor is made to enhance the convergence speed of the recently proposed Rao algorithms. The new upgraded versions of Rao algorithms named as “quasi-oppositional-based Rao algorithms” are proposed in this paper. The quasi-oppositional-based learning is incorporated in the basic Rao algorithms to diversify the searching process of the algorithms. The performance of the proposed algorithms is tested on 51 unconstrained benchmark functions. Also, three multi-objective optimization case studies of different heat sinks such as a single-layered microchannel heat sink (SL-MCHS), a double-layered microchannel heat sink (DL-MCHS), and a plate-fin heat sink (PFHS) are attempted to investigate the effectiveness of the proposed algorithms in solving real-world complex engineering optimization problems. The results obtained using the proposed algorithms are compared with the results obtained using the well-known advanced optimization algorithms such as genetic algorithm (GA), artificial bee colony (ABC), differential evolution (DE), particle swarm optimization (PSO), teaching-learning-based algorithm (TLBO), Jaya algorithm, multi-objective genetic algorithm (MOGA), non-dominated sorting genetic algorithm (NSGA-II), real-coded GA (RCGA), direction-based GA, self-adaptive multi-population (SAMP) Rao algorithms, and basic Rao algorithms. The proposed quasi-oppositional-based Rao algorithms are found superior or competitive to the other optimization algorithms considered.

APA, Harvard, Vancouver, ISO, and other styles

46

von Clarmann, T., F. Hase, B. Funke, et al. "Do vibrationally excited OH molecules affect middle and upper atmospheric chemistry?" Atmospheric Chemistry and Physics Discussions 10, no. 4 (2010): 11449–81. http://dx.doi.org/10.5194/acpd-10-11449-2010.

Full text

Abstract:

Abstract. Except for a few reactions involving electronically excited molecular or atomic oxygen or nitrogen, atmospheric chemistry modelling usually assumes that the temperature dependence of reaction rates is characterized by Arrhenius law involving kinetic temperatures. It is known, however, that in the upper atmosphere the vibrational temperatures may exceed the kinetic temperatures by several hundreds of Kelvins. This excess energy has an impact on the reaction rates. We have used upper atmospheric OH populations and reaction rate coefficients for OH(v=0...9)+O3 and OH(v=0...9)+O to estimate the effective (i.e. population weighted) reaction rates for various atmospheric conditions. We have found that the effective rate coefficient for OH(v=0...9)+O3 can be larger by a factor of up to 1020 than that involving OH in its vibrational ground state only. At altitudes where vibrationally excited states of OH are highly populated, the OH reaction is a minor sink of Ox and O3 compared to other reactions involving, e.g., atomic oxygen. Thus the impact of vibrationally excited OH on the ozone or Ox sink remains small. Among quiescent atmospheres under investigation, the largest while still small (less than 0.1%) effect was found for the polar winter upper stratosphere and mesosphere. The contribution of the reaction of vibrationally excited OH with ozone to the OH sink is largest in the upper polar winter stratosphere (up to 4%), while its effect on the HO2 source is larger in the lower thermosphere (up to 1% for polar winter and 1.7% for midlatitude night conditions). For OH(v=0...9)+O the rate coefficients differ by plus/minus a few percent only from those involving OH in its vibrational ground state. The effects on the odd oxygen sink are negative and can reach −0.7% (polar summer lowermost thermosphere), i.e. neglect of vibrational excitation overestimates the odd oxygen sink. The OH sink is overestimated by up to 2%. After a solar proton event, when upper atmospheric OH can be enhanced by an order of magnitude, the excess relative odd oxygen sink by OH(v=0...9)+O3 is estimated at up to 0.2%, and the excess relative OH sink by OH(v=0...9)+O3 can exceed 4% in the thermosphere.

APA, Harvard, Vancouver, ISO, and other styles

47

RATCLIFFE, NORMAN, SABINE SCHMITT, and MARK WHIFFIN. "Sink or swim? Viability of a black-tailed godwit population in relation to flooding." Journal of Applied Ecology 42, no. 5 (2005): 834–43. http://dx.doi.org/10.1111/j.1365-2664.2005.01076.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Møller, A. P., K. A. Hobson, T. A. Mousseau, and A. M. Peklo. "CHERNOBYL AS A POPULATION SINK FOR BARN SWALLOWS: TRACKING DISPERSAL USING STABLE-ISOTOPE PROFILES." Ecological Applications 16, no. 5 (2006): 1696–705. http://dx.doi.org/10.1890/1051-0761(2006)016[1696:caapsf]2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

McDowall, R. M. "Why be amphidromous: expatrial dispersal and the place of source and sink population dynamics?" Reviews in Fish Biology and Fisheries 20, no. 1 (2009): 87–100. http://dx.doi.org/10.1007/s11160-009-9125-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Morgan, C. A., J. R. Cordell, and C. A. Simenstad. "Sink or swim? Copepod population maintenance in the Columbia River estuarine turbidity-maxima region." Marine Biology 129, no. 2 (1997): 309–17. http://dx.doi.org/10.1007/s002270050171.

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!