Fish species introductions provide novel insights into the patterns and drivers of phylogenetic structure in freshwaters

Strecker, Angela L.; Olden, Julian D.

doi:10.1098/rspb.2013.3003

Cited by 13 publications

(38 citation statements)

References 53 publications

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“…These models strongly support environmental gradients as critical to mosquitofish invasion success. The importance of environmental gradients also is broadly consistent with recent work by Strecker and Olden (2014), who found that phylogenetic clustering in nonnative species was related to natural environmental conditions.…”

Section: Discussionsupporting

confidence: 79%

Natural abiotic factors more than anthropogenic perturbation shape the invasion of Eastern Mosquitofish (Gambusia holbrooki)

2015

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Eastern Mosquitofish (Gambusia holbrooki) is an invasive and globally widespread species that is considered highly tolerant. We used species distribution models (SDMs) to assess factors, including the role of anthropogenic perturbation, that mediate its invasion on a regional scale. A better understanding of the important large-scale factors may help us identify future areas of concern and potential avenues for control. We built SDMs from presence records and randomly selected pseudo-absences of mosquitofish on a 10-× 10-km grid. We used 10 modeling techniques implemented in the biomod2 software and ensemble forecasts. Final models contained 12 environmental predictors, including natural environmental factors (elevation, slope, topographic index, precipitation, accumulated flow, temperature mean and range) and anthropogenic perturbation indicators (population density, urban and agricultural land uses, number of local and upstream dams). Elevation, temperature, and accumulated flow most strongly influenced mosquitofish distribution, and mosquitofish were found more frequently in downstream, warmer waters. Anthropogenic features, except the number of upstream dams, were poorer predictors of mosquitofish presence than were natural environmental factors. The best models suggested that mosquitofish are more likely to occur in areas with more dams upstream, but removing this predictor did not strongly affect model results. Restoration efforts or modifications to anthropogenic features appear unlikely to alter mosquitofish distribution patterns, highlighting the importance of preventing introductions to new areas. Mosquitofish have been extensively documented in the Iberian Peninsula, but consensus methods suggest many additional suitable areas from which records were not found. Thus, this highly invasive species is or may become much more widely distributed than current observations in the region.

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Section: Discussionsupporting

confidence: 79%

Natural abiotic factors more than anthropogenic perturbation shape the invasion of Eastern Mosquitofish (Gambusia holbrooki)

2015

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“…Overall, compiling results from previous studies supports the hypothesis that environmental filtering of invasion success is generally most evident at coarse spatial resolutions, while competitive interactions between invasive and native species leave a more pronounced signature in trait patterns at local scales (Carboni et al , but see also Strecker and Olden ). Our review also highlights three important aspects of coexistence that we believe have received too little attention.…”

Section: ) Which Processes Drive Coexistence Between Invasive and Nasupporting

confidence: 76%

The community ecology of invasive species: where are we and what's next?

2016

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Alien species are continually introduced in most regions of the world, but not all survive and coexist with the resident native species. Approaches analyzing the functional (or phylogenetic) similarity between invasive species and native communities are increasingly employed to infer the processes underlying successful invasions and to predict future invaders. The relatively simple conceptual foundations have made these approaches very appealing and therefore widely used, often leading to confusion and hampering generalizations. We undertook a comprehensive review and synthesis of the functional similarity approach in invasion community ecology to clarify its advantages and limitations, to summarize what has been learned thus far, and to suggest avenues for future improvement. We first present the methodological state of the art and provide general guidelines. Second, by organizing the published literature around seven key questions in invasion ecology we found cumulative evidence that: at large spatial scales phylogenetic relatedness of invasive and native species is a good predictor of invasion success, but a poor predictor of invasion impacts; at fine spatial scales, community resistance to invasion tends to increase with native species diversity and with similarity to the invaders, consistent with patterns emerging from biotic interactions. In general, the processes filtering invaders appear to vary across species’ invasion stage and along environmental gradients. Nonetheless, we found conflicting evidence for differences in community assembly processes between invasive and native species, and between the invader's native and adventive ranges. Finally, we propose four important avenues for overcoming some of the identified methodological and conceptual limitations of the approach, in particular by integrating observational and experimental analyses and by explicitly considering species’ demographic rates and complex biotic interactions. Although the functional similarity approach bears intrinsic limitations, it still offers many opportunities in invasion community ecology at large spatial scales.

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“…Although these studies have greatly enhanced our knowledge regarding the effects of wildfire on stream fishes, major questions remain concerning the response of streams more distal from the fire perimeter that are inhabited by warm water fishes, which may exhibit different responses to forest fires given their different temperature and water quality tolerances (Olden et al 2006). Furthermore, numerous non-native warm water fishes now inhabit south-western streams, where they generally outnumber native species in terms of richness by two to one (Strecker & Olden 2014). Furthermore, numerous non-native warm water fishes now inhabit south-western streams, where they generally outnumber native species in terms of richness by two to one (Strecker & Olden 2014).…”

Section: Introductionmentioning

confidence: 99%

Metapopulation analysis indicates native and non‐native fishes respond differently to effects of wildfire on desert streams

Whitney

Gido

Pilger

et al. 2015

Ecology of Freshwater Fish

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Ash flows and flooding associated with wildfires represent important but understudied sources of disturbance for fish populations. Knowledge concerning these disturbances is especially limited for larger streams where warm water species dominate. Fire-related disturbances have been hypothesised to differentially affect native and non-native fishes, although this hypothesis has only been tested for salmonids. The objective of our research was to contrast effects of uncharacteristically large wildfires followed by flooding on metapopulations of native and non-native fishes in the Gila River of southwest New Mexico. Probabilities of occupancy, colonisation and local extinction of fishes were calculated across sites before and during disturbance and were also measured across a broader spatial scale during disturbance to identify potential refuge locations. Occupancy was higher for native fishes than non-natives, but multiple wildfire and flood events increased extinction probabilities of native species. Responses of non-native species to wildfires were mixed; extinction of non-native salmonids increased during disturbance, while extinction of several warm water species remained unchanged or decreased. Several undisturbed sites were poor refugia for natives as they were impacted by non-native piscivores, dewatering, and fragmentation. However, despite exposure to multiple disturbances, sites located in large tributary and valley reaches were consistently occupied by native species, suggesting these habitats provided refugia. We suggest that management actions (forest thinning; prescribed burning) that restore a more natural disturbance regime of small and less severe fires coupled with habitat remediation activities (non-native removal; decreased water withdrawal; improved connectivity) might diminish extinction risk for native fishes exposed to wildfire disturbance.

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Fish species introductions provide novel insights into the patterns and drivers of phylogenetic structure in freshwaters

Cited by 13 publications

References 53 publications

Natural abiotic factors more than anthropogenic perturbation shape the invasion of Eastern Mosquitofish (Gambusia holbrooki)

Natural abiotic factors more than anthropogenic perturbation shape the invasion of Eastern Mosquitofish (Gambusia holbrooki)

The community ecology of invasive species: where are we and what's next?

Metapopulation analysis indicates native and non‐native fishes respond differently to effects of wildfire on desert streams

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