Artykuły w czasopismach: „Freshwater dispersal”

1

Bilton, David T., Joanna R. Freeland i Beth Okamura. "Dispersal in Freshwater Invertebrates". Annual Review of Ecology and Systematics 32, nr 1 (listopad 2001): 159–81. http://dx.doi.org/10.1146/annurev.ecolsys.32.081501.114016.

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van de Meutter, Frank, Robby Stoks i Luc de Meester. "Size-selective dispersal of Daphnia resting eggs by backswimmers ( Notonecta maculata )". Biology Letters 4, nr 5 (15.07.2008): 494–96. http://dx.doi.org/10.1098/rsbl.2008.0323.

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Freshwater zooplankton is increasingly used to study effects of dispersal on community and metacommunity structure. Yet, it remains unclear how zooplankton disperses. Clearly, birds and wind play a significant role as zooplankton dispersal agents, but they may not always be the main vectors. This experimental study shows that a cosmopolitan aquatic insect, Notonecta , can be an important vector of cladoceran resting eggs (ephippia). Dispersing Notonecta frequently transported ephippia during flight, with a bias towards smaller ephippia in two species. A similar trend was present at the species level: Daphnia species with smaller ephippia were more often dispersed, suggesting that Notonecta could generate specific colonist communities. In addition, buoyancy appeared a critical trait, as non-floating ephippia of Daphnia magna were never dispersed. Our data suggest that Notonecta could be important dispersers of Daphnia , and that knowledge of dispersal dynamics of Notonecta may be used to predict Daphnia dispersal, colonization and resilience to disturbance.

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3

Comte, Lise, i Julian D. Olden. "Evidence for dispersal syndromes in freshwater fishes". Proceedings of the Royal Society B: Biological Sciences 285, nr 1871 (17.01.2018): 20172214. http://dx.doi.org/10.1098/rspb.2017.2214.

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Dispersal is a fundamental process defining the distribution of organisms and has long been a topic of inquiry in ecology and evolution. Emerging research points to an interdependency of dispersal with a diverse suite of traits in terrestrial organisms, however the extent to which such dispersal syndromes exist in freshwater species remains uncertain. Here, we test whether dispersal in freshwater fishes (1) is a fixed property of species, and (2) correlates with life-history, morphological, ecological and behavioural traits, using a global dataset of dispersal distances collected from the literature encompassing 116 riverine species and 196 locations. Our meta-analysis revealed a high degree of repeatability and heritability in the dispersal estimates and strong associations with traits related to life-history strategies, energy allocation to reproduction, ecological specialization and swimming skills. Together, these results demonstrate that similar to terrestrial organisms, the multi-dimensional nature of dispersal syndromes in freshwater species offer opportunities for the development of a unifying paradigm of movement ecology that transcend taxonomic and biogeographical realms. The high explanatory power of the models also suggests that trait-based and phylogenetic approaches hold considerable promises to inform conservation efforts in a rapidly changing world.

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Simon, Thomas P., i Jacob L. Burskey. "Spatial Distribution and Dispersal Patterns of Central North American Freshwater Crayfish (Decapoda: Cambaridae) with Emphasis on Implications of Glacial Refugia". International Journal of Biodiversity 2014 (6.11.2014): 1–7. http://dx.doi.org/10.1155/2014/282079.

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Spatial distributions of crayfish were evaluated in relation to glacial geography and possible modes of dispersal from refugia. Species dispersal patterns were a priori hypothesized and tested using principle components analysis (PCA). PCA factor loading plots were evaluated for hypothesized crayfish dispersal patterns. Cambarus laevis was limited to the unglaciated region, while Orconectes immunis, Orconectes virilis, and Procambarus gracilis may have dispersed from western glacial refugia in the upper Missouri drainage. Fallicambarus fodiens and Procambarus acutus dispersed from south of the glacial advance within the Mississippi embayment. Previous dispersal hypotheses for Orconectes propinquus recognized that northern refugia may have been from the Driftless Area in Wisconsin and Illinois and may have invaded more than one refuge since this species was common in unglaciated areas of southwestern Indiana. Orconectes indianensis center of abundance is in the unglaciated region. Disjunct populations likely dispersed into temporary glacial lakes that, when receded, left populations in previously glaciated areas. Cambarus polychromatus possibly dispersed from southern refugia, while Cambarus sp. A cf. diogenes dispersed from southern refugia not sympatric with C. polychromatus. The glacial refugia included western and southern areas of the glacial maximum; however, northern dispersal routes may be important with global climate change.

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Zhang, Weifeng G., John L. Wilkin i Robert J. Chant. "Modeling the Pathways and Mean Dynamics of River Plume Dispersal in the New York Bight". Journal of Physical Oceanography 39, nr 5 (1.05.2009): 1167–83. http://dx.doi.org/10.1175/2008jpo4082.1.

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Abstract This study investigates the dispersal of the Hudson River outflow across the New York Bight and the adjacent inner- through midshelf region. Regional Ocean Modeling System (ROMS) simulations were used to examine the mean momentum dynamics; the freshwater dispersal pathways relevant to local biogeochemical processes; and the contribution from wind, remotely forced along-shelf current, tides, and the topographic control of the Hudson River shelf valley. The modeled surface currents showed many similarities to the surface currents measured by high-frequency radar [the Coastal Ocean Dynamics Applications Radar (CODAR)]. Analysis shows that geostrophic balance and Ekman transport dominate the mean surface momentum balance, with most of the geostrophic flow resulting from the large-scale shelf circulation and the rest being locally generated. Subsurface circulation is driven principally by the remotely forced along-shelf current, with the exception of a riverward water intrusion in the Hudson River shelf valley. The following three pathways by which freshwater is dispersed across the shelf were identified: (i) along the New Jersey coast, (ii) along the Long Island coast, and (iii) by a midshelf offshore pathway. Time series of the depth-integrated freshwater transport show strong seasonality in dispersal patterns: the New Jersey pathway dominates the winter–spring seasons when winds are downwelling favorable, while the midshelf pathway dominates summer months when winds are upwelling favorable. A series of reduced physics simulations identifies that wind is the major force for the spreading of freshwater to the mid- and outer shelf, that remotely forced along-shelf currents significantly influence the ultimate fate of the freshwater, and that the Hudson River shelf valley has a modest dynamic effect on the freshwater spreading.

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Kappes, Heike, i Peter Haase. "Slow, but steady: dispersal of freshwater molluscs". Aquatic Sciences 74, nr 1 (2.03.2011): 1–14. http://dx.doi.org/10.1007/s00027-011-0187-6.

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Mandrak, Nicholas E., i E. J. Crossman. "Postglacial dispersal of freshwater fishes into Ontario". Canadian Journal of Zoology 70, nr 11 (1.11.1992): 2247–59. http://dx.doi.org/10.1139/z92-302.

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The present-day distributions of 117 native freshwater fishes in Ontario have been shaped by processes active following the Wisconsinan glacial period, 80 000–10 000 years before present. During this glacial period, these species survived in unglaciated réfugia. To understand the processes that resulted in the recolonization of Ontario by fishes following the last glacial period, the refugial areas occupied by each species were determined using a refugial index, and glacial water bodies used as dispersal routes were identified. The refugial origins of the Ontario populations of 91 species were resolved. Seventy-two species resided in the Mississippian refugium, 13 species in the Atlantic Coastal refugium, 4 species in dual Atlantic Coastal – Mississippian refugia, 1 species in a Missourian refugium, and 1 species in Atlantic Coastal, Mississippian, and Missourian refugia. These conclusions differed significantly from those of other studies. Five general patterns were identified from the distributions of 104 species. In addition, there are 13 species that do not fit any of the general patterns. Most species with similar distributions in Ontario shared the same refugia and dispersal routes in eastern North America, therefore it is hypothesized that historical processes were important in shaping the present-day distributions of Ontario freshwater fishes.

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8

Kristiansen, Jørgen. "16. Dispersal of freshwater algae — a review". Hydrobiologia 336, nr 1-3 (październik 1996): 151–57. http://dx.doi.org/10.1007/bf00010829.

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9

Ditrich, Tomáš. "Dispersal and Migration Patterns of Freshwater Semiaquatic Bugs". Insects 12, nr 11 (28.10.2021): 976. http://dx.doi.org/10.3390/insects12110976.

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Semiaquatic bugs (Hemiptera: Heteroptera: Gerromorpha) are mostly wing-polymorphic species with flight dispersal as an important life history trait, but the specific flight ability and dispersal pattern remain unexplored in most species. This report presents the results of a long-term survey based on the individual marking of more than 23,000 specimens of eight water striders (Gerridae) and a water cricket Velia caprai (Veliidae). Three distinct lentic habitats were sampled (solitary fishponds, systems of nearby fishponds and systems of small, often temporary pools) and one lotic habitat—a small forest stream. Recaptures revealed that three gerrid species tend to stay at the breeding site, but can differ in dispersal via the water surface. Reproductive flightless females disperse most actively via the water surface, possibly bypassing the trade-off between dispersal and reproduction. One species has a sex-dependent dispersal pattern, with females being rather philopatric, whereas males often disperse. Three other gerrid species are highly dispersive and tend to change breeding site. V. caprai, the only lotic species included in this survey, tend to move upstream and possibly compensate for the downstream drift.

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Bernays, Sofie J., Daniel J. Schmidt, David A. Hurwood i Jane M. Hughes. "Phylogeography of two freshwater prawn species from far-northern Queensland". Marine and Freshwater Research 66, nr 3 (2015): 256. http://dx.doi.org/10.1071/mf14124.

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The distribution of a freshwater species is often dependent on its ability to disperse within the riverine system. Species with high dispersal abilities tend to be widespread, whereas those with restricted dispersal tend to be geographically restricted and are usually given higher conservation priority. Population structure was compared between a widespread freshwater prawn species, Macrobrachium australiense, and a narrow-range endemic freshwater prawn, Macrobrachium koombooloomba. The distribution of M. australiense and M. koombooloomba did not overlap, although suggested historical river-boundary rearrangements indicate that there has been the potential for dispersal into neighbouring catchments. A fragment of the mtDNA CO1 gene was analysed and a Mantel test revealed a significant isolation by distance effect for both species. Significant overall FST values confirmed that both species exhibited low levels of dispersal, a prediction for populations inhabiting a fragmented upland environment. The level of structure in M. australiense is surprising for a widely distributed species. Not all M. australiense populations conformed to the stream-hierarchy model, with results being best explained by historical river realignment or cross-catchment dispersal. The fact that both species show limited dispersal highlights the importance of conservation in highland areas for both endemic and widely spread species.

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11

Black, Geoff A., J. Brian Dempson i W. J. Bruce. "Distribution and postglacial dispersal of freshwater fishes of Labrador". Canadian Journal of Zoology 64, nr 1 (1.01.1986): 21–31. http://dx.doi.org/10.1139/z86-005.

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The voluminous literature on the freshwater and diadromous fishes of Labrador is summarized in distributional maps. A total of 25 obligate freshwater spawning and one catadromous species has been reported. Fishes from Atlantic and Mississippi refugia probably invaded the region from the Great Lakes basin primarily via glacial Lake Barlow-Ojibway, crossing Quebec north of the Otish Mountain to the headwaters of the Churchill River system. Additional dispersal routes existed to the north and south. Euryhaline species from an Atlantic refugium first invaded coastal regions during postglacial depression and marine inundation. Remnants of these occur as landlocked populations. Labrador is divided into three major ichthyogeographic regions based on species distributions and dispersal opportunities. The Churchill River forms one region and is divided into three subregions. Upstream of Churchill Falls there is only one species, which dispersed across Quebec. Downstream areas, including accessible tributaries, have all of the common fishes present in Labrador. Less accessible watersheds south of Churchill River form the third subregion and are limited to fishes with better swimming abilities. The second major region is southeastern Labrador which has euryhaline fishes from Atlantic refugia and three species from Quebec. The third major region is loosely defined as northern Labrador (> 55°N) although it is one of decreasing numbers of species with increasing latitude.

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12

Heino, Jani, Janne Alahuhta, Terhi Ala-Hulkko, Harri Antikainen, Luis Mauricio Bini, Núria Bonada, Thibault Datry i in. "Integrating dispersal proxies in ecological and environmental research in the freshwater realm". Environmental Reviews 25, nr 3 (wrzesień 2017): 334–49. http://dx.doi.org/10.1139/er-2016-0110.

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Dispersal is one of the key mechanisms affecting the distribution of individuals, populations, and communities in nature. Despite advances in the study of single species, it has been notoriously difficult to account for dispersal in multispecies metacommunities, where it potentially has strong effects on community structure beyond those of local environmental conditions. Dispersal should thus be directly integrated in both basic and applied research by using proxies. Here, we review the use of proxies in the current metacommunity research, suggest new proxies, and discuss how proxies could be used in community modelling, particularly in freshwater systems. We suggest that while traditional proxies may still be useful, proxies formerly utilized in transport geography may provide useful novel insights into the structuring of biological communities in freshwater systems. We also suggest that understanding the utility of such proxies for dispersal in metacommunities is highly important for many applied fields such as freshwater bioassessment, conservation planning, and recolonization research in the context of restoration ecology. These research fields have often ignored spatial dynamics and focused mostly on local environmental conditions and changes therein. Yet, the conclusions of these applied studies may change considerably if dispersal is taken into account.

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13

Choi, Byoung-Ju, i John L. Wilkin. "The Effect of Wind on the Dispersal of the Hudson River Plume". Journal of Physical Oceanography 37, nr 7 (1.07.2007): 1878–97. http://dx.doi.org/10.1175/jpo3081.1.

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Abstract The dispersal of the Hudson River plume in response to idealized wind forcing is studied using a three-dimensional model. The model domain includes the Hudson River and its estuary, with a realistic coastline and bottom topography of the New York Bight. Steady low river discharge typical of mean conditions and a high-discharge event representative of the spring freshet are considered. Without wind forcing the plume forms a southward coastally trapped current at low river discharge and a large recirculating bulge of low-salinity water during a high-discharge event. Winds affect the freshwater export through the mouth of the estuary, which is the trajectory the plume takes upon entering the waters of the Mid-Atlantic Bight inner shelf, and the rate at which freshwater drains downstream. The dispersal trajectory is also influenced by the particular geography of the coastline in the apex of the New York Bight. Northward wind causes offshore displacement of a previously formed coastally trapped plume and drives a new plume along the Long Island coast. Southward wind induces a strong coastal jet that efficiently drains freshwater to the south. Eastward wind aids freshwater export from the estuary and favors the accumulation of freshwater in the recirculating bulge outside the mouth of Raritan Bay. Westward wind delays freshwater export from Raritan Bay. The momentum balance of the modeled plume shows that buoyancy and wind forces largely determine the pattern of horizontal freshwater dispersal, including the spreading of freshwater over ambient, more saline water and the bulge formation.

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Roland, Hanns-Jürgen, Karsten Grabow i Andreas Martens. "Aerial dispersal of freshwater gastropods by dragonflies (Odonata)". International Journal of Odonatology 15, nr 4 (grudzień 2012): 317–18. http://dx.doi.org/10.1080/13887890.2012.740402.

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Coates, William D., Robin Hale i John R. Morrongiello. "Dispersal decisions and personality in a freshwater fish". Animal Behaviour 157 (listopad 2019): 209–18. http://dx.doi.org/10.1016/j.anbehav.2019.07.012.

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Shurin, Jonathan B., Karl Cottenie i Helmut Hillebrand. "Spatial autocorrelation and dispersal limitation in freshwater organisms". Oecologia 159, nr 1 (22.10.2008): 151–59. http://dx.doi.org/10.1007/s00442-008-1174-z.

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Little, Chelsea J., Emanuel A. Fronhofer i Florian Altermatt. "Dispersal syndromes can impact ecosystem functioning in spatially structured freshwater populations". Biology Letters 15, nr 3 (marzec 2019): 20180865. http://dx.doi.org/10.1098/rsbl.2018.0865.

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Dispersal can strongly influence ecological and evolutionary dynamics. Besides the direct contribution of dispersal to population dynamics, dispersers often differ in their phenotypic attributes from non-dispersers, which leads to dispersal syndromes. The consequences of such dispersal syndromes have been widely explored at the population and community level; however, to date, ecosystem-level effects remain unclear. Here, we examine whether dispersing and resident individuals of two different aquatic keystone invertebrate species have different contributions to detrital processing, a key function in freshwater ecosystems. Using experimental two-patch systems, we found no difference in leaf consumption rates with dispersal status of the common native species Gammarus fossarum . In Dikerogammarus villosus , however, a Ponto-Caspian species now expanding throughout Europe, dispersers consumed leaf litter at roughly three times the rate of non-dispersers. Furthermore, this put the contribution of dispersing D. villosus to leaf litter processing on par with native G. fossarum, after adjusting for differences in organismal size. Given that leaf litter decomposition is a key function in aquatic ecosystems, and the rapid species turnover in freshwater habitats with range expansions of non-native species, this finding suggests that dispersal syndromes may have important consequences for ecosystem functioning.

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Jacobs, SWL, i KL Wilson. "A biogeographical analysis of the freshwater plants of Australasia". Australian Systematic Botany 9, nr 2 (1996): 169. http://dx.doi.org/10.1071/sb9960169.

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Patterns in the distribution of Australasian species of freshwater aquatic plants were sought, to determine whether vicariance, distance dispersal, local speciation, or a mixture of these could best explain the distribution. The distribution was recorded from 10 regions of Australasia that include sizeable areas of wetland: Papua New Guinea, Cape York Peninsula, south-east Queensland, eastern New South Wales, Victoria, Tasmania, New Zealand, northern Northern Territory, the Kimberley, and south-west Western Australia. Matrices of 553 species by 10 regions, 139 genera by 10 regions, and 56 families by 10 regions were analysed using hierarchical fusion, nearest neighbour and ordination techniques. The results indicate that there are two distinct elements in the aquatic flora, tropical and temperate. The diffuse boundary between these two climatic zones could be interpreted as a barrier in the sense used in definitions of vicariance. There is little effective spread between tropical and temperate areas but, within each of these climatic zones, the species are mobile and many spread reasonably readily between regions, provided suitable habitats and dispersal opportunities are available. Where geographic barriers to distance dispersal have been great then these may become as important as the climatic barrier. This is demonstrated, at least in part, by the differences between some of the generic and species dendrograms. Local speciation (not shown by our PATN analyses because of the endemic species being ignored in them) has been important where some primarily aquatic genera have proliferated when conditions have been suitable. Local speciation has occurred in cosmopolitan aquatic genera that have presumably arrived in regions via long distance dispersal. The significance of bird migration and dispersal patterns are discussed. The aquatic flora of the monsoon tropics has evolved mainly from long distance dispersal but with significant local speciation in some genera such as Nymphoides, Utricularia, Nymphaea and Vallisneria. The pattern of distribution was compared with those recorded from other ecologically defined groups such as the Australian arid and alpine floras.

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Karabanov, Dmitry P., Eugeniya I. Bekker, Petr G. Garibian, Russell J. Shiel, Tsuyoshi Kobayashi, Derek J. Taylor i Alexey A. Kotov. "Multiple Recent Colonizations of the Australian Region by the Chydorus sphaericus Group (Crustacea: Cladocera)". Water 14, nr 4 (15.02.2022): 594. http://dx.doi.org/10.3390/w14040594.

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Biotic introductions are an ongoing disruption for many ecosystems. For passively dispersed freshwater zooplankton, transcontinental introductions have been common but are poorly studied in the southern hemisphere. Here we assess the hypothesis of recent introduction for populations of the Chydorus sphaericus group (Crustacea: Cladocera) in Australia. We analyzed 254 sequences (63 original sequences) from the cytochrome oxidase I region of mitochondrial DNA of Chydorus sp., which included global representation. Three Australian populations were connected with separate clades in the northern hemisphere, suggesting multiple colonization events for Australia. The timescale of the divergences was consistent with recent (Quaternary) dispersal. As Australian populations are exposed to migrating birds from the northern hemisphere, both avian and anthropogenic sources are candidates for dispersal vectors. We concluded that recent cross-hemisphere dispersal in the Chydorus sphaericus group is more common than previously believed.

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Hodges, K., S. Donnellan i A. Georges. "Significant genetic structure despite high vagility revealed through mitochondrial phylogeography of an Australian freshwater turtle (Chelodina longicollis)". Marine and Freshwater Research 66, nr 11 (2015): 1045. http://dx.doi.org/10.1071/mf14102.

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Restriction to the freshwater environment plays a dominant role in the population genetic structure of freshwater fauna. In taxa with adaptations for terrestriality, however, the restrictions on dispersal imposed by drainage divides may be overcome. We investigate the mitochondrial phylogeographic structure of the eastern long-necked turtle (Chelodina longicollis), a widespread Australian freshwater obligate with strong overland dispersa\l capacity and specific adaptations to terrestriality. We predict that such characteristics make this freshwater species a strong candidate to test how life-history traits can drive gene flow and interbasin connectivity, overriding the constraining effects imposed by hydrological boundaries. Contrary to expectations, and similar to low-vagility freshwater vertebrates, we found two ancient mitochondrial haplogroups with clear east–west geographic partitioning either side of the Great Dividing Range. Each haplogroup is characterised by complex genetic structure, demographically stable subpopulations, and signals of isolation by distance. This pattern is overlaid with signatures of recent gene flow, likely facilitated by late Pleistocene and ongoing anthropogenic landscape change. We demonstrate that the divergent effects of landscape history can overwhelm the homogenising effects of life-history traits that connect populations, even in a highly vagile species.

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Turner, Jefferson T. "Biogeography of Australasian Freshwater Centropagid Copepods: Vicariance or Dispersal?" Journal of Biogeography 18, nr 4 (lipiec 1991): 467. http://dx.doi.org/10.2307/2845488.

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Perrin, Sam Wenaas, Göran Englund, Stefan Blumentrath, Robert Brian O’Hara, Per‐Arne Amundsen i Anders Gravbrøt Finstad. "Integrating dispersal along freshwater ecosystems into species distribution models". Diversity and Distributions 26, nr 11 (29.08.2020): 1598–611. http://dx.doi.org/10.1111/ddi.13112.

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Lintermans, Mark. "Human‐assisted dispersal of alien freshwater fish in Australia". New Zealand Journal of Marine and Freshwater Research 38, nr 3 (sierpień 2004): 481–501. http://dx.doi.org/10.1080/00288330.2004.9517255.

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Schwalb, Astrid N., Todd J. Morris i Karl Cottenie. "Dispersal abilities of riverine freshwater mussels influence metacommunity structure". Freshwater Biology 60, nr 5 (17.03.2015): 911–21. http://dx.doi.org/10.1111/fwb.12544.

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Havel, John E., i Jonathan B. Shurin. "Mechanisms, effects, and scales of dispersal in freshwater zooplankton". Limnology and Oceanography 49, nr 4part2 (31.01.2004): 1229–38. http://dx.doi.org/10.4319/lo.2004.49.4_part_2.1229.

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Cohen, Galeet M., i Jonathan B. Shurin. "Scale-dependence and mechanisms of dispersal in freshwater zooplankton". Oikos 103, nr 3 (21.10.2003): 603–17. http://dx.doi.org/10.1034/j.1600-0706.2003.12660.x.

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Bohonak, Andrew J., i David G. Jenkins. "Ecological and evolutionary significance of dispersal by freshwater invertebrates". Ecology Letters 6, nr 8 (sierpień 2003): 783–96. http://dx.doi.org/10.1046/j.1461-0248.2003.00486.x.

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Allen Curry, R. "Late glacial impacts on dispersal and colonization of Atlantic Canada and Maine by freshwater fishes". Quaternary Research 67, nr 2 (marzec 2007): 225–33. http://dx.doi.org/10.1016/j.yqres.2006.11.002.

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AbstractLate glacial scenarios of ice retreat and biogeography databases constrain the dispersal routes of obligate freshwater fishes into Atlantic Canada and Maine. Evidence indicates glacial ice covered the present-day mainland and offshore islands at 18,000 14C yr before present. Possible refugia for extirpated freshwater fishes were the exposed outer edge of the Grand Banks (east), exposed Georges Bank (south-Atlantic Refugium), and the Mississippi Refugium in the west. It is improbable that the region was recolonized from the offshore refugia. Rather, fishes recolonized from the east via the upper St. Lawrence River valley into the upper Saint John River, Maine (Lake Madawaska) from 11,000 to 12,000 14C yr BP. The short period of entry resulted in the low diversity of obligate freshwater species in the region. Lake Madawaska was breached and dispersal continued into the remainder of the region after 8000 14C yr BP. By 6000 14C yr BP, access routes to the east along low-lying coastal zones were blocked by rising sea levels, which isolated Prince Edward Island, Cape Breton Island, and most probably Nova Scotia. Natural dispersal across the region appeared complete by this time.

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Hughes, Jane M., i Mia J. Hillyer. "Patterns of connectivity among populations of Cherax destructor (Decapoda : Parastacidae) in western Queensland, Australia". Marine and Freshwater Research 54, nr 5 (2003): 587. http://dx.doi.org/10.1071/mf03066.

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Freshwater organisms are often hypothesized to reflect the hierarchical nature of stream channels in the genetic structure of their populations. However, patterns of genetic structure are also affected by the dispersal mechanism of the particular species and the nature of the river channels. In this study, the genetic structure of a freshwater crayfish, known to have the ability for terrestrial dispersal, was examined in a habitat where stream structure and elevational differences across catchment boundaries are minimal. It was found that levels of connectivity among populations in the same catchment are high, suggesting either recent or contemporary dispersal among them. In contrast, almost no sharing of haplotypes across drainage boundaries indicates limited terrestrial dispersal across them. However, nested clade analysis indicated that, historically, there has been movement between drainages. It is suggested that populations in the Cooper and Murray–Darling were isolated in the past and that, more recently, recolonization has occurred in an east–west direction from the Murray–Darling to the Bulloo and from the Bulloo to the Cooper. These movements probably occurred in wetter times when whole catchments were flooded.

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Jones, Michael T., Lisabeth L. Willey, Derek T. Yorks, Peter D. Hazelton i Steve L. Johnson. "Passive transport of Eastern Elliptio (Elliptio complanata) by freshwater turtles in New England". Canadian Field-Naturalist 134, nr 1 (8.07.2020): 56–59. http://dx.doi.org/10.22621/cfn.v134i1.2379.

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Dispersal of freshwater mussels (order Unionida) is primarily as glochidia on the fins and gills of host fish. Adult mussels are more sessile, generally moving short distances (<2 m/week) along lake and river beds. Between 2007 and 2016, we observed seven instances of adult Eastern Elliptio (Elliptio complanata) and one instance of a fingernail clam (Sphaerium sp.) attached to the feet of freshwater turtles in streams and ponds of New England, United States. Observations included five instances of mussels attached to Wood Turtles (Glyptemys insculpta) in Maine and Massachusetts, one instance of a mussel attached to the fingernail of an Eastern Painted Turtle (Chrysemys picta) in Massachusetts, one instance of a mussel attached to a Snapping Turtle (Chelydra serpentina) in Massachusetts, and one instance of a fingernail clam attached to the fingernail of an Eastern Painted Turtle in Massachusetts. We suggest that Eastern Elliptio may be susceptible to transport by freshwater turtles foraging in mussel beds and that transport of adult mussels by freshwater turtles could result in otherwise atypical long-distance, upstream, or overland dispersal between waterbodies.

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Cid, Núria, Núria Bonada, Jani Heino, Miguel Cañedo-Argüelles, Julie Crabot, Romain Sarremejane, Janne Soininen, Rachel Stubbington i Thibault Datry. "A Metacommunity Approach to Improve Biological Assessments in Highly Dynamic Freshwater Ecosystems". BioScience 70, nr 5 (22.04.2020): 427–38. http://dx.doi.org/10.1093/biosci/biaa033.

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Abstract Rapid shifts in biotic communities due to environmental variability challenge the detection of anthropogenic impacts by current biomonitoring programs. Metacommunity ecology has the potential to inform such programs, because it combines dispersal processes with niche-based approaches and recognizes variability in community composition. Using intermittent rivers—prevalent and highly dynamic ecosystems that sometimes dry—we develop a conceptual model to illustrate how dispersal limitation and flow intermittence influence the performance of biological indices. We produce a methodological framework integrating physical- and organismal-based dispersal measurements into predictive modeling, to inform development of dynamic ecological quality assessments. Such metacommunity-based approaches could be extended to other ecosystems and are required to underpin our capacity to monitor and protect ecosystems threatened under future environmental changes.

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Ovchankova, Nadezda B., i Andrey B. Krasheninnikov. "The first record of Gyraulus cf. acronicus (Gastropoda, Heterobranchia, Planorbidae) in waterbodies of the Novaya Zemlya Archipelago". Fauna norvegica 42 (28.02.2023): 1–5. http://dx.doi.org/10.5324/fn.v42i0.4917.

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The knowledge on diversity of freshwater molluscs in the Arctic islands of the Russian Federation remains incomplete. The present study provides the first record of the North Palaearctic species Gyraulus cf. acronicus (Férussac, 1807) on the Novaya Zemlya Archipelago. It is also the first finding of freshwater gastropods on the archipelago and the northernmost record for Gyraulus in the Palaearctic Region. The questions still remain: whether our finding belongs to a recent or a subfossil or fossil population, and how gastropods could colonize the Arctic islands. Several possibilities of dispersal are discussed: the former land-bridge once connecting the archipelago islands to the mainland, and the dispersal of snails with other animals after the Ice Sheet retreat.

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Morrison, Wendy E., i David H. Secor. "Demographic attributes of yellow-phase American eels (Anguilla rostrata) in the Hudson River estuary". Canadian Journal of Fisheries and Aquatic Sciences 60, nr 12 (1.12.2003): 1487–501. http://dx.doi.org/10.1139/f03-129.

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Management of American eels (Anguilla rostrata) requires an understanding of how demographic attributes vary within large estuaries. Yellow-phase American eel length and age structure, growth, dispersal, nematode infestation rates, loss rate (natural mortality and emigration), and production were measured at six sites throughout the tidal portion of the Hudson River. Short-term dispersal was low, with >70% of eels at all sites captured <1 km from their original tagging area. Length was similar among sites (total length = 45.7 ± 0.3 cm), whereas age was substantially lower for brackish-water sites (8 ± 4 years) than for freshwater sites (17 ± 4 years). Growth was higher for brackish-water sites than for freshwater sites (8.0 cm·year–1 and 3.4 cm·year–1, respectively). From 1997 to 2000, infestation by the exotic nematode Anguillicola crassus increased dramatically in mean intensity as well as prevalence. Annual loss rates measured for the six sites varied between 9% and 24%, with no statistical difference between freshwater and brackish-water sites. Estimated eel production was higher in a brackish-water habitat (1.10–1.77 kg·ha–1·year–1) than in a freshwater location (0.21–0.58 kg·ha–1·year–1). The results of this study support a recent proposal to establish freshwater areas as exploitation reserves.

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Chaplin, J. A., i D. J. Ayre. "Genetic evidence of widespread dispersal in a parthenogenetic freshwater ostracod". Heredity 78, nr 1 (styczeń 1997): 57–67. http://dx.doi.org/10.1038/hdy.1997.7.

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Soons, Merel B. "Wind dispersal in freshwater wetlands: Knowledge for conservation and restoration". Applied Vegetation Science 9, nr 2 (listopad 2006): 271–78. http://dx.doi.org/10.1111/j.1654-109x.2006.tb00676.x.

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Bush, Alex, i Andrew J. Hoskins. "Does dispersal capacity matter for freshwater biodiversity under climate change?" Freshwater Biology 62, nr 2 (5.12.2016): 382–96. http://dx.doi.org/10.1111/fwb.12874.

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Eagar, Stephen H. "Freshwater Ostracoda from Tarawa, Kiribati: their implications for dispersal mechanisms". Journal of Micropalaeontology 19, nr 1 (1.05.2000): 68. http://dx.doi.org/10.1144/jm.19.1.68.

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Abstract. Tarawa Atoll, Gilbert Islands (1° 30′N, 173° 00′E) is an isolated place, comparatively recently emergent – 2500 years bp and 2 – 3 m above present sea-level (Marshall & Jacobson, 1985). During the course of a study of the marine ostracods (Eagar, in press) it was noted that there are relatively few places where freshwater is visible on the surface of the atoll. This is not unusual, given the low precipitation (154 mm a−1) and the daytime temperatures of Tarawa (27–30°C). Five freshwater ponds on South Tarawa (Fig. 1) were examined and two species of Ostracoda were found: Cyprinotus cingalensis Brady, 1886 and Limnocythere notodonta Vávra, 1906. At Bairiki (locality A), a pond adjacent to the causeway linking Bairiki with Betio was sampled and yielded abundant Cyprinotus cingalensis. Other ponds were found at Ambo (Locality B) and Temaiku Bight (Localities C and D with two ponds). Only the pond (Locality B), an established babai pit (taro; Cyrtosperma chamissonis), adjacent to the roadside at Ambo yielded further specimens of the ostracod Limnocythere notodonta, although in low numbers.The question of how these species were introduced onto Tarawa Atoll is intriguing. C. cingalensis is known from Ceylon (Brady, 1886), Hawaii and the Sandwich Islands. The record by Vávra (1906) from Australia may be incorrect. Limnocythere notodonta was previously recorded only from Java (Vávra, 1906). Both species may have been distributed in the same way that Sars (e.g., Sars, 1896) transported species from different parts of the world to Norway to describe . . .

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Locke, A., D. M. Reid, H. C. van Leeuwen, W. G. Sprules i J. T. Carlton. "Ballast Wafer Exchange as a Means of Controlling Dispersal of Freshwater Organisms by Ships". Canadian Journal of Fisheries and Aquatic Sciences 50, nr 10 (1.10.1993): 2086–93. http://dx.doi.org/10.1139/f93-232.

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During May–December 1990 and March–May 1991, 546 foreign ocean-going vessels entered the Laurentian Great Lakes and upper St. Lawrence River, areas protected by the Great Lakes Ballast Water Control Guidelines. Between 88 and 94% of the vessels exchanged their ballast water with seawater as required by the guidelines. Living representatives of 11 invertebrate phyla were sampled from ballast tanks. Between 14 and 33% of ships that exchanged freshwater ballast in midocean carried living freshwater-tolerant zooplankton at the time of entry to the Seaway, although these included many taxa already found in the Great Lakes. Four freshwater-tolerant zooplankton species that were identified as living specimens in ballast water have apparently not been recorded from the Great Lakes. Voluntary ballast water controls reduced but did not eliminate the risk of species invasion, since some ships did not comply with the guidelines, and even ships that did exchange ballast water could introduce viable freshwater-tolerant organisms into the Great Lakes. About half of the ballast water carried into the Seaway by ocean-going vessels and lakers each year originates from the St. Lawrence River, portions of which are not yet protected by any ballast controls.

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Vidal, Nicolas, Anna Azvolinsky, Corinne Cruaud i S. Blair Hedges. "Origin of tropical American burrowing reptiles by transatlantic rafting". Biology Letters 4, nr 1 (11.12.2007): 115–18. http://dx.doi.org/10.1098/rsbl.2007.0531.

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Populations of terrestrial or freshwater taxa that are separated by oceans can be explained by either oceanic dispersal or fragmentation of a previously contiguous land mass. Amphisbaenians, the worm lizards (approx. 165 species), are small squamate reptiles that are uniquely adapted to a burrowing lifestyle and inhabit Africa, South America, Caribbean Islands, North America, Europe and the Middle East. All but a few species are limbless and they rarely leave their subterranean burrows. Given their peculiar habits, the distribution of amphisbaenians has been assumed to be primarily the result of two land-mass fragmentation events: the split of the supercontinent Pangaea starting 200 Myr ago, separating species on the northern land mass (Laurasia) from those on the southern land mass (Gondwana), and the split of South America from Africa 100 Myr ago. Here we show with molecular evidence that oceanic dispersal—on floating islands—played a more prominent role, and that amphisbaenians crossed the Atlantic Ocean in the Eocene (40 Myr ago) resulting in a tropical American radiation representing one-half of all known amphisbaenian species. Until now, only four or five transatlantic dispersal events were known in terrestrial vertebrates. Significantly, this is the first such dispersal event to involve a group that burrows, an unexpected lifestyle for an oceanic disperser.

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Di Nitto, D., P. L. A. Erftemeijer, J. K. L. van Beek, F. Dahdouh-Guebas, L. Higazi, K. Quisthoudt, L. P. Jayatissa i N. Koedam. "Modelling drivers of mangrove propagule dispersal and restoration of abandoned shrimp farms". Biogeosciences 10, nr 7 (26.07.2013): 5095–113. http://dx.doi.org/10.5194/bg-10-5095-2013.

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Abstract. Propagule dispersal of four mangrove species Rhizophora mucronata, R. apiculata, Ceriops tagal and Avicennia officinalis in the Pambala–Chilaw Lagoon Complex (Sri Lanka) was studied by combining a hydrodynamic model with species-specific knowledge on propagule dispersal behaviour. Propagule transport was simulated using a finite-volume advection-diffusion model to investigate the effect of dispersal vectors (tidal flow, freshwater discharge and wind), trapping agents (retention by vegetation) and seed characteristics (buoyancy) on propagule dispersal patterns. Sensitivity analysis showed that smaller propagules, like the oval-shaped propagules of Avicennia officinalis, dispersed over larger distances and were most sensitive to changing values of retention by mangrove vegetation compared to larger, torpedo-shaped propagules of Rhizophora spp. and C. tagal. Directional propagule dispersal in this semi-enclosed lagoon with a small tidal range was strongly concentrated towards the edges of the lagoon and channels. Short distance dispersal appeared to be the main dispersal strategy for all four studied species, with most of the propagules being retained within the vegetation. Only a small proportion (max. 5%) of propagules left the lagoon through a channel connecting the lagoon with the open sea. Wind significantly influenced dispersal distance and direction once propagules entered the lagoon or adjacent channels. Implications of these findings for mangrove restoration were tested by simulating partial removal in the model of dikes around abandoned shrimp ponds to restore tidal hydrology and facilitate natural recolonisation by mangroves. The specific location of dike removal, (with respect to the vicinity of mangroves and independently suitable hydrodynamic flows), was found to significantly affect the resultant quantities and species of inflowing propagules and hence the potential effectiveness of natural regeneration. These results demonstrate the value of propagule dispersal modelling in guiding hydrological restoration efforts that aim to facilitate natural mangrove regeneration.

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Di Nitto, D., P. L. A. Erftemeijer, J. K. L. van Beek, F. Dahdouh-Guebas, L. Higazi, K. Quisthoudt, L. P. Jayatissa i N. Koedam. "Modelling drivers of mangrove propagule dispersal and restoration of abandoned shrimp farms". Biogeosciences Discussions 10, nr 1 (28.01.2013): 1267–312. http://dx.doi.org/10.5194/bgd-10-1267-2013.

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Abstract. Propagule dispersal of four mangrove species Rhizophora mucronata, R. apiculata, Ceriops tagal and Avicennia officinalis in the Pambala-Chilaw Lagoon Complex (Sri Lanka) was studied by combining a hydrodynamic model with species-specific knowledge on propagule dispersal behaviour. Propagule transport was simulated using a finite-volume advection-diffusion model to investigate the effect of dispersal vectors (tidal flow, freshwater discharge and wind), trapping agents (retention by vegetation) and seed characteristics (buoyancy) on propagule dispersal patterns. Sensitivity analysis showed that smaller propagules, like the oval-shaped propagules of Avicennia officinalis, dispersed over larger distances and were most sensitive to changing values of retention by mangrove vegetation compared to larger, torpedo-shaped propagules of Rhizophora spp. and C. tagal. Directional propagule dispersal in this semi-enclosed lagoon with a small tidal range was strongly concentrated towards the edges of the lagoon and channels. Short distance dispersal appeared to be the main dispersal strategy for all four studied species, with most of the propagules being retained within the vegetation. Only a small proportion (max. 5%) of propagules left the lagoon through a channel connecting the lagoon with the open sea. Wind significantly influenced dispersal distance and direction once propagules entered the lagoon or adjacent channels. Implications of these findings for mangrove restoration were tested by simulating partial removal in the model of dikes around abandoned shrimp ponds to restore tidal hydrology and facilitate natural recolonisation by mangroves. The specific location of dike removal, (with respect to the vicinity of mangroves and independently suitable hydrodynamic flows), was found to significantly affect the resultant quantities and species of inflowing of propagules and hence the potential effectiveness of natural regeneration. These results demonstrate the value of propagule dispersal modelling in guiding hydrological restoration efforts that aim to facilitate natural mangrove regeneration.

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Masci, Kate D., Mark Ponniah i Jane M. Hughes. "Patterns of connectivity between the Lake Eyre and Gulf drainages, Australia: a phylogeographic approach". Marine and Freshwater Research 59, nr 9 (2008): 751. http://dx.doi.org/10.1071/mf07178.

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Historical barriers to dispersal in freshwater environments can be detected in the genetic structure of organisms living within these environments. Over time, it is possible that a barrier for freshwater organisms becomes passable, allowing gene flow between adjacent populations. The Lake Eyre and Gulf of Carpentaria Basins are adjacent drainages in northern Queensland. Low topography and large-scale flooding events make it possible that connectivity events may have occurred between the drainages throughout history. Documented geological evidence also suggests historical connectivity between the basins in the Pliocene. The present study looked at two widely distributed species, the freshwater fish Nematalosa erebi and the freshwater prawn Macrobrachium australiense, and used mitochondrial sequence data to assess past connectivity between the basins and estimate the timing of these events. Both species showed significant divergence across the drainage divide. There was evidence of two fragmentation events in the N. erebi data and divergence estimates for these events were 160 000 and 350 000 years ago. It was estimated that there has been no dispersal of M. australiense across the drainage divide for over one million years. The discordant evolutionary histories observed suggest that the patterns reflect recent historical environmental events and life-history differences between the two species.

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Cumberlidge, Neil. "Insular species of Afrotropical freshwater crabs (Crustacea: Decapoda: Brachyura: Potamonautidae and Potamidae) with special reference to Madagascar and the Seychelles". Contributions to Zoology 77, nr 2 (2008): 71–81. http://dx.doi.org/10.1163/18759866-07702003.

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The evolutionary relationships between island and mainland faunas of the 24 species of insular freshwater crabs in the Afrotropical region are reviewed in the light of phylogenetic studies. Twenty insular species of freshwater crabs are endemic, and four are also found on the neighboring mainland of Africa. The Atlantic Ocean islands of Sherbro, Bioko, Principe, and São Tomé support five species of Potamonautidae, while the Western Indian Ocean islands of the Seychelles, Zanzibar, Pemba, Mafia, and Madagascar together have 16 species of Potamonautidae, and Socotra has three species of Potamidae. Disjunct distributions of non-endemic insular species of Afrotropical freshwater crabs with conspecifics on the mainland are the result of past lower sea levels that once united islands with the coast. The presence of endemic species of freshwater crabs on oceanic volcanic islands (such as Príncipe and São Tomé) separated from the mainland by deep seas is probably the result of transoceanic dispersal. Endemic genera of freshwater crabs found on oceanic ‘Gondwanan’ islands are derived from ancestral populations on the Eurasian (Socotra) or African (The Seychelles and Madagascar) mainlands that probably reached there by transoceanic dispersal, rather than their being the vicariant descendents of Gondwanan ancestors. Species of freshwater crabs found on islands in the Afrotropical region are either not unique, or are endemic at the species or genus level. The degree of endemism depends on the island’s geological history: whether it is part of the continental shelf, an oceanic island of volcanic origin, or a former part of the ancient continent of Gondwana.

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Vanschoenwinkel, Bram, Saïdja Gielen, Maitland Seaman i Luc Brendonck. "Wind mediated dispersal of freshwater invertebrates in a rock pool metacommunity: differences in dispersal capacities and modes". Hydrobiologia 635, nr 1 (14.09.2009): 363–72. http://dx.doi.org/10.1007/s10750-009-9929-z.

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Hupało, Kamil, Saskia Schmidt, Till-Hendrik Macher, Martina Weiss i Florian Leese. "Fresh insights into Mediterranean biodiversity: environmental DNA reveals spatio-temporal patterns of stream invertebrate communities on Sicily". Hydrobiologia 849, nr 1 (10.11.2021): 155–73. http://dx.doi.org/10.1007/s10750-021-04718-3.

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AbstractThe Mediterranean region with its islands is among the top biodiversity hotspots. It houses numerous freshwater taxa with a high rate of endemism, but is heavily impacted by anthropogenic pressures and global climate change. To conserve biodiversity, reliable data on species and genetic diversity are needed especially for the scarcely known insular freshwater ecosystems. Environmental DNA (eDNA) metabarcoding provides a straight-forward opportunity to assess aquatic biodiversity. Therefore, we conducted the first eDNA metabarcoding study in one stream catchment on Sicily. Specifically, we aimed to (i) investigate spatial diversity patterns of macroinvertebrate communities, (ii) assess seasonal changes (autumn and winter), and (iii) check if dispersal barriers can be identified. Water samples were taken at 27 different sites in two seasons and eDNA metabarcoding was performed using a fragment of the mitochondrial cytochrome c oxidase subunit I gene as a marker. In total, we detected 98 macroinvertebrate species, including 28 taxa potentially new to Sicily. Exact sequence variant and species composition data showed that diversity differed between seasons with less taxa detected in winter. We also detected a dispersal barrier, which had a stronger effect in autumn. Our findings show that eDNA metabarcoding provides valuable information on Sicilian freshwater biodiversity. We therefore encourage its application for understudied regions to better understand the state and dynamics of freshwater biodiversity.

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Manning, Faye S., P. Jeff Curtis, Ian R. Walker i Jason Pither. "Potential long‐distance dispersal of freshwater diatoms adhering to waterfowl plumage". Freshwater Biology 66, nr 6 (30.03.2021): 1136–48. http://dx.doi.org/10.1111/fwb.13706.

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Irmscher, Pascal, i Caryn C. Vaughn. "Effects of Juvenile Settling and Drift Rates on Freshwater Mussel Dispersal". American Midland Naturalist 180, nr 2 (październik 2018): 258–72. http://dx.doi.org/10.1674/0003-0031-180.2.258.

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Davies, G. D., i J. R. Britton. "Assessment of non-native fish dispersal from a freshwater aquaculture site". Fisheries Management and Ecology 23, nr 5 (15.03.2016): 428–30. http://dx.doi.org/10.1111/fme.12176.

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Coughlan, Neil E., Andrew L. Stevens, Thomas C. Kelly, Jaimie T. A. Dick i Marcel A. K. Jansen. "Zoochorous dispersal of freshwater bivalves: an overlooked vector in biological invasions?" Knowledge & Management of Aquatic Ecosystems, nr 418 (2017): 42. http://dx.doi.org/10.1051/kmae/2017037.

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Janeiro, João, Elisa Fernandes, Flávio Martins i Rodrigo Fernandes. "Wind and freshwater influence over hydrocarbon dispersal on Patos Lagoon, Brazil". Marine Pollution Bulletin 56, nr 4 (kwiecień 2008): 650–65. http://dx.doi.org/10.1016/j.marpolbul.2008.01.011.

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