Landscape resistance mediates native fish species distribution shifts and vulnerability to climate change in riverscapes

2020 ◽  
Vol 26 (10) ◽  
pp. 5492-5508
Author(s):  
Michael T. LeMoine ◽  
Lisa A. Eby ◽  
Chris G. Clancy ◽  
Leslie G. Nyce ◽  
Michael J. Jakober ◽  
...  

<em>Abstract</em>.—Stream fish are expected to be influenced by climate change as they are ectothermic animals living in lotic systems. Using fish presence–absence records in 1,110 stream sites across France, our study aimed at (1) modeling current and future distributions of 35 stream fish species, (2) using an ensemble forecasting approach (i.e., several general circulation models [GCM] × greenhouse gas emission scenarios [GES] × statistical species distribution models [SDM] combinations) to quantify the variability in the future fish species distribution due to each component, and (3) assessing the potential impacts of climate change on fish species distribution and assemblage structure by using a consensus method that accounted for the variability in future projections.


2019 ◽  
Vol 29 (3) ◽  
pp. 590-602 ◽  
Author(s):  
Youri Martin ◽  
Hans Van Dyck ◽  
Pierre Legendre ◽  
Josef Settele ◽  
Oliver Schweiger ◽  
...  

2016 ◽  
Vol 19 (12) ◽  
pp. 1468-1478 ◽  
Author(s):  
Alex Bush ◽  
Karel Mokany ◽  
Renee Catullo ◽  
Ary Hoffmann ◽  
Vanessa Kellermann ◽  
...  

2011 ◽  
Vol 62 (9) ◽  
pp. 1099 ◽  
Author(s):  
Stephen R. Balcombe ◽  
Fran Sheldon ◽  
Samantha J. Capon ◽  
Nick R. Bond ◽  
Wade L. Hadwen ◽  
...  

Many aquatic ecosystems have been severely degraded by water-resource development affecting flow regimes and biological connectivity. Freshwater fish have been particularly affected by these changes and climate change will place further stress on them. The Murray–Darling Basin (MDB), Australia, represents a highly affected aquatic system with dramatically modified flow regimes. This has impaired the health of its rivers, and potentially limited the adaptive capacity of its biota to respond to a changing climate. Here, we present our predictions of the potential impacts of climate change on 18 native fish species across their distributional ranges against the back-drop of past and continuing water-resource development (WRD). Because most of these species are found across a wide range of geographical and hydrological settings, we classified the MDB into 10 regions to account for likely variation in climate-change effects, on the basis of latitude, elevation and WRD. Cold water-tolerant species will be under greater stress than are warm water-tolerant species. In some regions, the negative impacts on exotic fish such as trout are likely to improve current conditions for native species. Because the impacts of climate change on any given species are likely to vary from region to region, regional fish assemblages will also be differentially affected. The most affected region is likely to occur in the highly disturbed Lower Murray River region, whereas the dryland rivers that are less affected in the northern MDB are likely to remain largely unchanged. Although climate change is a current and future threat to the MDB fish fauna, the continued over-regulation of water resources will place as much, if not more, stress on the remnant fish species.


2015 ◽  
Vol 18 (2) ◽  
pp. 427-444 ◽  
Author(s):  
Pieterjan Verhelst ◽  
Pieter Boets ◽  
Gerlinde Van Thuyne ◽  
Hugo Verreycken ◽  
Peter L. M. Goethals ◽  
...  

2018 ◽  
Author(s):  
V. Shalisko ◽  
J. A. Vázquez-García ◽  
A. R. Villalobos-Arámbula ◽  
M. A. Muñiz-Castro

AbstractSpecies vulnerability to climate change has been inferred using species distribution models from an example of the recently discovered Magnolia mercedesiarum (sect. Talauma, Magnoliaceae), a narrowly ranged species endemic to moist tropical forests in the eastern Ecuadorian Andes. The environmental conditions within the current species distribution area has been compared with conditions projected to 2050 and 2070, using data from the HadGEM2-ES model in two CO2 emission scenarios: RCP4.5 and RCP8.5. The ecological niche modelling allowed determination of parameters of climatic environmental conditions that control current species distribution to produce a hypothesis on probable changes in spatial pattern of suitable habitats in future scenarios. Within the current species distribution area of M. mercedesiarum, significant reduction of habitat suitability was projected for both emission scenarios, combined with a lack of nearby areas with adequate environmental conditions. Several disjunct sites of high habitat suitability were found to emerge in the Colombian Andes, but they seem unreachable by this tree species in the scope of a few decades, due to intrinsic dispersal limitations. The reduction of habitat suitability and improbability of distribution area shift to adjacent geographic locations could mean a high species vulnerability to climate change. The species could be at risk of extinction if it does not possess hidden phenotypical plasticity and potential for fast adaptation to climate change.


Author(s):  
Roberta Rossi ◽  
Paolo Savoldelli ◽  
Roberto Sindaco

Climate change affects species and biological systems in several ways and is documented to be responsible of species distribution shifts. Odonata are reported to respond quickly to climate change, and in last years several Mediterranean species have expanded their range northwards in Europe. In this note, we report the first records of reproductive populations of Calopteryx haemorrhoidalis in Piedmont (NW Italy), suggesting a northwards latitudinal shift of the range of the species in Italy. The reports of Mediterranean dragonflies and damselflies that in the last years have been recorded for the first time in Piedmont are also outlined.


Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2758
Author(s):  
Daniel Mameri ◽  
Rui Rivaes ◽  
Maria Teresa Ferreira ◽  
Stefan Schmutz ◽  
José Maria Santos

Climate change represents a major challenge for the management of native fish communities in Mediterranean rivers, as reductions in discharge may lead to a decrease in passability through small barriers such as weirs, both in temporary and perennial rivers. Through hydraulic modelling, we investigated how discharges from a large hydropower plant in the Tagus River are expected to affect the passability of native freshwater fish species through a rock weir (Pego, Portugal), equipped with a nature-like fish ramp. We considered not only mean daily discharge values retrieved from nearby gauging stations (1991–2005) for our flow datasets, but also predicted discharge values based on climatic projections (RCP) until the end of the century (2071–2100) for the Tagus River. Results showed that a minimum flow of 3 m3 s−1 may be required to ensure the passability of all species through the ramp and that passability was significantly lower in the RCP scenarios than in the historical scenario. This study suggests that climate change may reduce the passability of native fish species in weirs, meaning that the construction of small barriers in rivers should consider the decreases in discharge predicted from global change scenarios for the suitable management of fish populations.


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