Warm season chloride concentrations in stream habitats of freshwater mussel species at risk

2012 ◽  
Vol 171 ◽  
pp. 199-206 ◽  
Author(s):  
Aaron K. Todd ◽  
M. Georgina Kaltenecker
Keyword(s):  
At Risk ◽  
Warm Season ◽  
Freshwater Mussel ◽  
Species At Risk ◽  
Mussel Species ◽  
Chloride Concentrations

scholarly journals First records of two freshwater mussel Species at Risk, Mapleleaf (Quadrula quadrula) and Lilliput (Toxolasma parvum), in the Canard River, Ontario, with implications for freshwater mussel recovery in the Detroit River

2020 ◽  
Vol 134 (2) ◽  
pp. 179-188
Author(s):  
Todd J. Morris ◽  
Margaret N. Sheldon ◽  
Kelly A. McNichols-O'Rourke
Keyword(s):  
At Risk ◽  
Freshwater Mussel ◽  
Species At Risk ◽  
Great Lakes Basin ◽  
Detroit River ◽  
The Family ◽  
The Status ◽  
Special Concern ◽  
Riverine Habitats ◽  
Search Approach

Freshwater mussels of the family Unionidae are among the world’s most imperilled animals. A third of Canadian species have been assessed by the Committee on the Status of Endangered Wildlife in Canada as Extirpated, Endangered, Threatened, or Special Concern, with losses attributed to natural system modifications such as damming, pollution, exploitation for buttons and pearls, urbanization, and the introduction and subsequent effects of aquatic invasive species. In the Great Lakes basin, the introduction of dreissenid mussels in the 1980s caused catastrophic declines, with remnant populations restricted to lotic riverine habitats. In southwestern Ontario, the Canard River is the largest remaining direct tributary of the Detroit River that could provide a source of mussels to aid natural recovery. In 2019, nine sites in the Canard River were sampled using a timed-search approach (4.5 person-hours/site) with a combination of tactile searching by hand and mussel scoops (7-mm mesh) or underwater viewers. The search yielded 362 individuals of eight species, including two Species at Risk, Mapleleaf (Quadrula quadrula) and Lilliput (Toxolasma parvum), which had never been previously recorded in the Canard River.

Global population trends in shorebirds: migratory behaviour makes species at risk

2021 ◽  
Vol 108 (2) ◽  
Author(s):  
Jaroslav Koleček ◽  
Jiří Reif ◽  
Miroslav Šálek ◽  
Jan Hanzelka ◽  
Camille Sottas ◽  
...  
Keyword(s):  
At Risk ◽  
Population Trends ◽  
Species At Risk ◽  
Migratory Behaviour ◽  
Global Population

Measuring grassland structure for recovery of grassland species at risk

2005 ◽  
Author(s):  
Xulin Guo ◽  
Wei Gao ◽  
John Wilmshurst
Keyword(s):  
At Risk ◽  
Species At Risk ◽  
Grassland Species

Filling The Integrity Gaps In Protection On Of Species At Risk Through Litigation And Stewardship

2021 ◽  
Author(s):  
Khadijah Moinuddin
Keyword(s):  
At Risk ◽  
Threatened Species ◽  
Qualitative Interview ◽  
Species At Risk ◽  
Court Cases ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Policy Measures ◽  
Risk Protection ◽  
Collaborative Efforts

There are many integrity gaps in the federal and provincial systems designed to protect endangered and threatened species in Canada. NGOs (Non-governmental organizations) and other stakeholders can get involved in the process of protecting species at risk, by participating in collaborative efforts through volunteerism and stewardship efforts. NGOs can also bring issues of species-at-risk protection to court through litigation. This thesis began by exploring the integrity gaps in the federal and provincial processes for species at risk protection. The thesis then examined different initiatives undertaken by NGOs to combat this issue, the first being litigation and how it can be used as a strategy to help protect species at risk, and hold government accountable. The thesis also explored the rationale behind NGO actions, as well as the possible outcomes from these court cases. Next, the thesis discussed volunteer efforts undertaken by NGOs and other stakeholders. The research was supplemented with valuable qualitative interview data from scientists, members of NGOs, members of government, and a lawyer. The thesis concluded with recommendations for further action and policy measures that can be taken to protect species at risk

Benthic diatoms as indicators of herbicide toxicity in rivers – A new SPEcies At Risk (SPEARherbicides) index

2019 ◽  
Vol 99 ◽  
pp. 203-213 ◽  
Author(s):  
Rebecca J. Wood ◽  
Simon M. Mitrovic ◽  
Richard P. Lim ◽  
Michael St. J. Warne ◽  
Jason Dunlop ◽  
...  
Keyword(s):  
At Risk ◽  
New Species ◽  
Benthic Diatoms ◽  
Species At Risk ◽  
Herbicide Toxicity ◽  
A New Species
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