Data from: Historical surveys reveal a long-term decline in muskrat populations

Link copied to clipboard!

Voir cette notice dans le dépôt source

---

Description:

The muskrat (Ondatra zibethicus) is an iconic species in Canada, valued for both its fur and its integral role in wetland ecosystems, and widely regarded for its perseverance. However, the resilience of this semi-aquatic mammal seems to be in question now as increasing evidence points to widespread population declines. Recent analyses of harvest data across North America suggest a reduction in their numbers, but this has not been widely corroborated by population surveys. In this study we replicated historic muskrat house count surveys at two large Great Lakes coastal wetlands and present confirmation that declines in muskrat harvest correspond to actual declines in muskrat abundance. At the Point Pelee National Park marsh and the Matchedash Bay-Gray Marsh wetland we found that mean muskrat house counts declined by 93% and 91% respectively between historic surveys 40-50 years ago and contemporary surveys over the past seven years. The factors responsible for these dramatic declines remain unclear but there may be a relationship with changes in the habitat quality of these wetlands that have occurred over the same time frame. Not only is the loss of muskrats an issue for the resulting loss of the wetland ecosystem services they provide, but it may be an indication of broader marsh ecosystem degradation. As such, a scarcity of muskrats should be considered a red flag for the state of biodiversity in our wetlands. Continued surveys and ongoing research are needed to shed more light on the current status of muskrat populations and their marsh habitats across their native range.

---

Auteur(s) :

Sadowski, Carrie

Sadowski, Carrie

Ontario Ministry of Natural Resources

et Bowman, Jeff

Bowman, Jeff

Ontario Ministry of Natural Resources

---

Dépôt source:

Dryad

---

URL:

https://doi.org/10.5061/dryad.b2rbnzsf2

---

Date de publication:

2022-04-07

---

Mots-clés (en):

Muskrat, <i>Ondatra</i>, et population decline

---

Citation selon les normes APA:

Sadowski, J., CarrieAuthor JoinBowman. (2022). Data from: Historical surveys reveal a long-term decline in muskrat populations [Data set]. Dryad. https://doi.org/10.5061/dryad.b2rbnzsf2

Référence copiée dans le presse-papier

Copier la référence bibliographique

---

Exporter vers le gestionnaire de références bibliographiques :

Télécharger le fichier BibTeX (.bib)

---