Assessing the global distribution of river fisheries harvest: a systematic map protocol

Romulo, Chelsie; Basher, Zeenatul; Lynch, Abigail J.; Kao, Yu‐Chun; Taylor, William W.

doi:10.1186/s13750-017-0107-x

Cited by 6 publications

(5 citation statements)

References 28 publications

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“…Given the particularly broad scope of this review (i.e., global range shifts across all animals and plants from marine, freshwater, and terrestrial ecosystems), the number of retrieved articles exceeded our capacity to complete an exhaustive review of every article. To balance specificity with comprehensiveness, we constructed an accumulation curve to determine when to stop reviewing article abstracts following the method outlined in [34]. Using the Colandr relevance ranking function, highly relevant articles appeared earlier in the search.…”

Section: Article Screening and Study Eligibility Criteriamentioning

confidence: 99%

Climate change and the global redistribution of biodiversity: substantial variation in empirical support for expected range shifts

et al. 2023

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Background Among the most widely predicted climate change-related impacts to biodiversity are geographic range shifts, whereby species shift their spatial distribution to track their climate niches. A series of commonly articulated hypotheses have emerged in the scientific literature suggesting species are expected to shift their distributions to higher latitudes, greater elevations, and deeper depths in response to rising temperatures associated with climate change. Yet, many species are not demonstrating range shifts consistent with these expectations. Here, we evaluate the impact of anthropogenic climate change (specifically, changes in temperature and precipitation) on species’ ranges, and assess whether expected range shifts are supported by the body of empirical evidence. Methods We conducted a Systematic Review, searching online databases and search engines in English. Studies were screened in a two-stage process (title/abstract review, followed by full-text review) to evaluate whether they met a list of eligibility criteria. Data coding, extraction, and study validity assessment was completed by a team of trained reviewers and each entry was validated by at least one secondary reviewer. We used logistic regression models to assess whether the direction of shift supported common range-shift expectations (i.e., shifts to higher latitudes and elevations, and deeper depths). We also estimated the magnitude of shifts for the subset of available range-shift data expressed in distance per time (i.e., km/decade). We accounted for methodological attributes at the study level as potential sources of variation. This allowed us to answer two questions: (1) are most species shifting in the direction we expect (i.e., each observation is assessed as support/fail to support our expectation); and (2) what is the average speed of range shifts? Review findings We found that less than half of all range-shift observations (46.60%) documented shifts towards higher latitudes, higher elevations, and greater marine depths, demonstrating significant variation in the empirical evidence for general range shift expectations. For the subset of studies looking at range shift rates, we found that species demonstrated significant average shifts towards higher latitudes (average = 11.8 km/dec) and higher elevations (average = 9 m/dec), although we failed to find significant evidence for shifts to greater marine depths. We found that methodological factors in individual range-shift studies had a significant impact on the reported direction and magnitude of shifts. Finally, we identified important variation across dimensions of range shifts (e.g., greater support for latitude and elevation shifts than depth), parameters (e.g., leading edge shifts faster than trailing edge for latitude), and taxonomic groups (e.g., faster latitudinal shifts for insects than plants). Conclusions Despite growing evidence that species are shifting their ranges in response to climate change, substantial variation exists in the extent to which definitively empirical observations confirm these expectations. Even though on average, rates of shift show significant movement to higher elevations and latitudes for many taxa, most species are not shifting in expected directions. Variation across dimensions and parameters of range shifts, as well as differences across taxonomic groups and variation driven by methodological factors, should be considered when assessing overall confidence in range-shift hypotheses. In order for managers to effectively plan for species redistribution, we need to better account for and predict which species will shift and by how much. The dataset produced for this analysis can be used for future research to explore additional hypotheses to better understand species range shifts.

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Section: Article Screening and Study Eligibility Criteriamentioning

confidence: 99%

Climate change and the global redistribution of biodiversity: substantial variation in empirical support for expected range shifts

et al. 2023

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“…The shapefile can be downloaded from https://www.sciencebase.gov/catalog/item/5a145fdde4b09fc93dcfd36c . Although there are shapefiles of river polylines at global scale exists, the major advancement of this layer is the improved resolution scale of 1:20,000 which will enable fisheries and aquatic scientist and managers to compare environmental data at ecologically relevant scales [5] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

New global high-resolution centerlines dataset of selected river systems

2018

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We present the first high resolution (1:20,000) river centerlines shapefiles from 50 large rivers across the world. Rivers were selected based on the criteria of having more than 1000 km length and which have been reported to have a significant contribution to global fishery production. Since large rivers often span multiple countries, the degree of changes (i.e., anthropogenic or climate derived) varies from region to region. These high-resolution layers were developed to enable researchers to delineate accurate river length, from headwaters regions to their delta and assess or visualize the ongoing changes more accurately in these river systems. Further, these polylines could be used in coordination with satellite derived environmental or landscape variables for ecological research (e.g. predicting biodiversity, estimating biomass).

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“…Globally, sturgeon species have undergone precipitous declines, with populations of the 14 species of Acipenseridae for which data are available having decreased by 91% on average between 1970 and 2016 (Deinet et al 2020). Front Ecol Environ doi:10.1002/fee.2550 fishes in supporting these values is often well understood, but data are often underreported, and acquiring globally standardized statistics is challenging and costly (Romulo et al 2017). Migratory fishes also provide many less tangible social benefits, such as religious or cultural value.…”

Section: Social Criteria For Global Swimwaysmentioning

confidence: 99%

“…The role of migratory fishes in supporting these values is often well understood, but data are often underreported, and acquiring globally standardized statistics is challenging and costly (Romulo et al . 2017). Migratory fishes also provide many less tangible social benefits, such as religious or cultural value.…”

Section: Social Criteria For Global Swimwaysmentioning

confidence: 99%