Fronts, jumps and secondary introductions suggested as different invasion patterns in marine species, with an increase in spread rates over time
Authors: Mineur, F., Davies, A.J., Maggs, C.A., Verlaque, M. and Johnson, M.P.
Journal: Proceedings of the Royal Society B: Biological Sciences
Volume: 277
Issue: 1694
Pages: 2693-2701
eISSN: 1471-2970
ISSN: 0962-8452
DOI: 10.1098/rspb.2010.0494
Abstract:Not all introduced (invasive) species in a region will spread from a single point of introduction. Longdistance dispersal or further introductions can obscure the pattern of spread, but the regional importance of such processes is difficult to gauge. These difficulties are further compounded when information on the multiple scale process of invasive species range expansion is reduced to one-dimensional estimates of spread (e.g. km yr-1). We therefore compared the results of two different metrics of range expansion: maximum linear rate of spread and accumulation of occupied grid squares (50 × 50 km) over time. An analysis of records for 54 species of introduced marine macrophytes in the Mediterranean and northeast Atlantic revealed cases where the invasion process was probably missed (e.g. Atlantic Bonnemaisonia hamifera) and suggested cases of secondary introductions or erratic jump dispersal (Dasysiphonia sp. and Womersleyella setacea). A majority of species analysed showed evidence for an accumulation of invaded sites without a clear invasion front. Estimates of spread rate are increasing for more recent introductions. The increase is greater than can be accounted for by temporally varying search effort and implies a historical increase in vector efficiency and/or a decreased resistance of native communities to invasion. © 2010 The Royal Society.
Source: Scopus
Fronts, jumps and secondary introductions suggested as different invasion patterns in marine species, with an increase in spread rates over time.
Authors: Mineur, F., Davies, A.J., Maggs, C.A., Verlaque, M. and Johnson, M.P.
Journal: Proc Biol Sci
Volume: 277
Issue: 1694
Pages: 2693-2701
eISSN: 1471-2954
DOI: 10.1098/rspb.2010.0494
Abstract:Not all introduced (invasive) species in a region will spread from a single point of introduction. Long-distance dispersal or further introductions can obscure the pattern of spread, but the regional importance of such processes is difficult to gauge. These difficulties are further compounded when information on the multiple scale process of invasive species range expansion is reduced to one-dimensional estimates of spread (e.g. km yr(-1)). We therefore compared the results of two different metrics of range expansion: maximum linear rate of spread and accumulation of occupied grid squares (50 x 50 km) over time. An analysis of records for 54 species of introduced marine macrophytes in the Mediterranean and northeast Atlantic revealed cases where the invasion process was probably missed (e.g. Atlantic Bonnemaisonia hamifera) and suggested cases of secondary introductions or erratic jump dispersal (Dasysiphonia sp. and Womersleyella setacea). A majority of species analysed showed evidence for an accumulation of invaded sites without a clear invasion front. Estimates of spread rate are increasing for more recent introductions. The increase is greater than can be accounted for by temporally varying search effort and implies a historical increase in vector efficiency and/or a decreased resistance of native communities to invasion.
Source: PubMed
Fronts, jumps and secondary introductions suggested as different invasion patterns in marine species, with an increase in spread rates over time
Authors: Mineur, F., Davies, A.J., Maggs, C.A., Verlaque, M. and Johnson, M.P.
Journal: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Volume: 277
Issue: 1694
Pages: 2693-2701
eISSN: 1471-2954
ISSN: 0962-8452
DOI: 10.1098/rspb.2010.0494
Source: Web of Science (Lite)
Fronts, jumps and secondary introductions suggested as different invasion patterns in marine species, with an increase in spread rates over time.
Authors: Mineur, F., Davies, A.J., Maggs, C.A., Verlaque, M. and Johnson, M.P.
Journal: Proceedings. Biological sciences
Volume: 277
Issue: 1694
Pages: 2693-2701
eISSN: 1471-2954
ISSN: 0962-8452
DOI: 10.1098/rspb.2010.0494
Abstract:Not all introduced (invasive) species in a region will spread from a single point of introduction. Long-distance dispersal or further introductions can obscure the pattern of spread, but the regional importance of such processes is difficult to gauge. These difficulties are further compounded when information on the multiple scale process of invasive species range expansion is reduced to one-dimensional estimates of spread (e.g. km yr(-1)). We therefore compared the results of two different metrics of range expansion: maximum linear rate of spread and accumulation of occupied grid squares (50 x 50 km) over time. An analysis of records for 54 species of introduced marine macrophytes in the Mediterranean and northeast Atlantic revealed cases where the invasion process was probably missed (e.g. Atlantic Bonnemaisonia hamifera) and suggested cases of secondary introductions or erratic jump dispersal (Dasysiphonia sp. and Womersleyella setacea). A majority of species analysed showed evidence for an accumulation of invaded sites without a clear invasion front. Estimates of spread rate are increasing for more recent introductions. The increase is greater than can be accounted for by temporally varying search effort and implies a historical increase in vector efficiency and/or a decreased resistance of native communities to invasion.
Source: Europe PubMed Central