Identifying species at risk from climate change: Traits predict the drought vulnerability of freshwater fishes

2013 ◽  
Vol 160 ◽  
pp. 40-49 ◽  
Author(s):  
Bruce C. Chessman
Keyword(s):  
Climate Change ◽  
At Risk ◽  
Freshwater Fishes ◽  
Species At Risk ◽  
Drought Vulnerability

scholarly journals Comparative analysis of abundance–occupancy relationships for species at risk at both broad taxonomic and spatial scales

2015 ◽  
Vol 93 (7) ◽  
pp. 515-519 ◽  
Author(s):  
Nancy E. Roney ◽  
Anna Kuparinen ◽  
Jeffrey A. Hutchings
Keyword(s):  
At Risk ◽  
Comparative Analysis ◽  
Large Scale ◽  
Spatial Scales ◽  
Freshwater Fishes ◽  
Reference Points ◽  
Species At Risk ◽  
Large Spatial Scale ◽  
Terrestrial Mammals ◽  
Taxonomic Groups

The abundance–occupancy relationship is one of the most well-examined relationships in ecology. At the species level, a positive association has been widely documented. However, until recently, research on the nature of this relationship at broad taxonomic and spatial scales has been limited. Here, we perform a comparative analysis of 12 taxonomic groups across a large spatial scale (Canada), using data on Canadian species at risk: amphibians, arthropods, birds, freshwater fishes, lichens, marine fishes, marine mammals, molluscs, mosses, reptiles, terrestrial mammals, and vascular plants. We find a significantly positive relationship in all taxonomic groups with the exception of freshwater fishes (negative association) and lichens (no association). In general, our work underscores the strength and breadth of this apparently fundamental relationship and provides insight into novel applications for large-scale population dynamics. Further development of species-independent abundance–occupancy relationships, or those of a similar nature, might well prove instrumental in serving as starting points for developing species-independent reference points and recovery strategies.

scholarly journals Predicting warming-induced hypoxic stress for fish in a fragmented river channel using ecosystem metabolism models

2021 ◽  
Author(s):  
Jacob P. Ziegler ◽  
James W. Roy ◽  
Matthew J. Bogard ◽  
D. Andrew R. Drake
Keyword(s):  
Climate Change ◽  
At Risk ◽  
Water Temperature ◽  
Fish Species ◽  
River Channel ◽  
Ecosystem Metabolism ◽  
Hypoxic Stress ◽  
Aquatic Species ◽  
Species At Risk ◽  
Temperature And Precipitation

Aquatic biota often face multiple anthropogenic threats such as river fragmentation and climate change that can contribute to high rates of aquatic species imperilment world-wide. Temperature-induced hypoxia is one under-explored mechanism that can threaten aquatic species in fragmented rivers with reduced flows. We applied ecosystem metabolism models to define the effect of water temperature on net ecosystem production (NEP) of oxygen at 12 sites of a fragmented river channel that supports three fish species at risk and experiences hypoxia. We found that water temperature and precipitation events at 75% of our sites were significantly and negatively correlated to NEP estimates and explained 28% of the variation in NEP within sites. Temperature-induced reductions in NEP at these sites likely contributed to hypoxic conditions threatening the three species at risk as NEP explained 41% of the variation in dissolved oxygen near all sites. Our results have applications for understanding drivers of hypoxic stress in fragmented watercourses, integrating water temperature-NEP effects with oxygen demands of sensitive fish species, and modeling future effects of climate change on aquatic species.

scholarly journals High-latitude EU Habitats Directive species at risk due to climate change and land use

2021 ◽  
Vol 28 ◽  
pp. e01664
Author(s):  
Risto K. Heikkinen ◽  
Linda Kartano ◽  
Niko Leikola ◽  
Juha Aalto ◽  
Kaisu Aapala ◽  
...  
Keyword(s):  
Climate Change ◽  
At Risk ◽  
Land Use ◽  
High Latitude ◽  
Habitats Directive ◽  
Species At Risk ◽  
Eu Habitats Directive

scholarly journals The Importance of Assessing Climate Change Vulnerability to Address Species Conservation

2014 ◽  
Vol 5 (2) ◽  
pp. 450-462 ◽  
Author(s):  
Karen E. Bagne ◽  
Megan M. Friggens ◽  
Sharon J. Coe ◽  
Deborah M. Finch
Keyword(s):  
Climate Change ◽  
At Risk ◽  
Extinction Risk ◽  
Species Conservation ◽  
Biodiversity Loss ◽  
Small Subset ◽  
Species At Risk ◽  
Terrestrial Vertebrates ◽  
Climate Change Vulnerability ◽  
Risk Of Extinction

Abstract Species conservation often prioritizes attention on a small subset of “special status” species at high risk of extinction, but actions based on current lists of special status species may not effectively moderate biodiversity loss if climate change alters threats. Assessments of climate change vulnerability may provide a method to enhance identification of species at risk of extinction. We compared climate change vulnerability and lists of special status species to examine the adequacy of current lists to represent species at risk of extinction in the coming decades. The comparison was made for terrestrial vertebrates in a regionally important management area of the southwestern United States. Many species not listed as special status were vulnerable to increased extinction risk with climate change. Overall, 74% of vulnerable species were not included in lists of special status and omissions were greatest for birds and reptiles. Most special status species were identified as additionally vulnerable to climate change impacts and there was little evidence to indicate the outlook for these species might improve with climate change, which suggests that existing conservation efforts will need to be intensified. Current special status lists encompassed climate change vulnerability best if climate change was expected to exacerbate current threats, such as the loss of wetlands, but often overlooked climate-driven threats, such as exceeding physiological thresholds.

Consistency of COSEWIC species at risk designations: freshwater fishes as a case study

2009 ◽  
Vol 66 (6) ◽  
pp. 959-971 ◽  
Author(s):  
James R. Lukey ◽  
Stephen S. Crawford
Keyword(s):  
Decision Making ◽  
At Risk ◽  
Freshwater Fishes ◽  
Assessment Process ◽  
Species At Risk ◽  
International Union ◽  
Assessment Protocol ◽  
The Status ◽  
Canadian Wildlife

The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) is responsible for the assessment of Canadian wildlife at risk. The COSEWIC assessment process is primarily based on five quantitative criteria developed by the International Union for the Conservation of Nature, but allows for further modification of designations under certain conditions. This study investigated the consistency of designations predicted using the quantitative COSEWIC criteria compared with observed designations reported by COSEWIC. A total of 49 COSEWIC designations for freshwater fishes from 2000 to 2007 were compared for consistency in decision-making. Overall, there was a 57.1% agreement between predicted and observed designations. A substantial number (35.1%) of COSEWIC designations were downlisted from “Endangered” or “Threatened” without sufficient explanation to justify the modifications. For the cases of uplisting, these differences were associated with qualitative criteria not effectively represented in our algorithm. Recommendations are offered to improve the transparency and accountability of COSEWIC decision-making, including enhancements to reporting and the explicit incorporation of uncertainty in the COSEWIC risk assessment protocol.

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