Mexican mosquito fern (Azolla mexicana) in British Columbia, proposed recovery strategy 2017

Official title: Recovery Strategy for Mexican Mosquito Fern (Azolla mexicana) in British Columbia - 2017 [Proposed]

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Table of contents

• Document information
• Part 1
• Part 2

Species at Risk Act
Recovery Strategy Series

Adopted under Section 44 of SARA

Part 1 - Table of contents

• Part 1 – Federal Addition to the Recovery Plan for the Mexican Mosquito Fern (Azolla mexicana) in British Columbia, prepared by Environment and Climate Change Canada.
  • Table of contents
  • Preface
  • Additions and modifications to the adopted document
  • 1 Critical habitat
    • 1.1 Identification of the species' critical habitat
    • 1.2 Activities likely to result in destruction of critical habitat
  • 2 Statement on action plans
  • 3 Effects on the environment and other species
  • 4 References

List of figures

• Figure 1. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygons show the area containing critical habitat at Population #1: Little Fort, north of Mount Loveway (88.3 ha) and Population #3: Mount Loveway, 1.8 km southeast of (3.8 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.
• Figure 2. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygons show the area containing critical habitat at Population #2: Little Fort, south of (20.1 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.
• Figure 3. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygon shows the area containing critical habitat at Population #5: Chinook Creek (0.8 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.
• Figure 4. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygons show the area containing critical habitat at Population #6: Tappen, Shuswap Lake (5.2 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.
• Figure 5. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygons show the area containing critical habitat at Population #7: Salmon Arm (31.1 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.
• Figure 6. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygons show the area containing critical habitat at Population #9: Cambie, 2.7 km west of (5.2 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.
• Figure 7. Critical habitat for Mexican Mosquito-fern is represented by the shaded yellow polygons where the criteria and methodology set out in Section 1.1 are met. The detailed polygons show the area containing critical habitat at Population #10: Vernon (10.9 ha). The 1 km x 1 km UTM grid overlay shown on this figure is part of a standardized national grid system that is used to indicate the general geographic area within which critical habitat is found in Canada. Areas outside of the shaded yellow polygons do not contain critical habitat.

List of tables

• Tables 1. Summary of essential biophysical features, functions, and attributes of Mexican Mosquito-fern habitat in British Columbia.
• Tables 2. Examples of activities likely to result in the destruction of critical habitat for Mexican Mosquito-fern. Associated threat numbers are in accordance with the IUCN-CMP unified threats classification system (CMP 2010).

Part 2 - Table of contents

• Part 2 – Recovery Plan for Mexican Mosquito Fern (Azolla mexicana) in British Columbia, prepared by the British Columbia Ministry of Environment.
  • Table of contents
    • Acknowledgements
    • Executive summary
    • Recovery feasibility summary
  • 1 COSEWIC species assessment information
  • 2 Species status information
  • 3 Species information
    • 3.1 Species Description
    • 3.2 Populations and distribution
      • 3.2.1 Distribution
      • 3.2.2 Populations
    • 3.3 Habitat and biological needs of the Mexican Mosquito Fern
      • 3.3.1 Water depth
      • 3.3.2 Water chemistry
      • 3.3.3 Water temperature
      • 3.3.4 Water levels
      • 3.3.5 Light
      • 3.3.6 Reproduction
      • 3.3.7 Dispersal
    • 3.4 Ecological role
    • 3.5 Limiting factors
  • 4 Threats
    • 4.1 Threat assessment
    • 4.2 Description of threats
  • 5 Recovery goal and objectives
    • 5.1 Recovery (population and distribution) goal
    • 5.2 Rationale for the recovery (population and distribution) goal
    • 5.3 Recovery objectives
  • 6 Approaches to meet recovery objectives
    • 6.1 Actions already completed or underway
    • 6.2 Recovery action table
  • 7 Species survival and recovery habitat
    • 7.1 Biophysical description of the species’ survival/recovery habitat
    • 7.2 Spatial description of the species’ survival/recovery habitat
  • 8 Measuring progress
  • 9 Effects on other species
  • 10 References

List of figures

• Figure 1. Mexican mosquito fern, Little Fort, B.C. (Jamie Fenneman).
• Figure 2. North American distribution of Mexican mosquito fern (COSEWIC 2008).
• Figure 3. Distribution of Mexican mosquito fern in British Columbia. Subpopulations are grouped within the populations for ease of viewing (B.C. Conservation Data Centre 2015).

List of tables

• Table 1. Summary of Mexican mosquito fern populations in British Columbia (B.C. Conservation Data Centre 2015).
• Table 2. Summary of essential features, functionsand attributes of Mexican mosquito fern habitat in British Columbia (compiled by Environment and Climate Change Canada 2015).
• Table 3. Threat classification table for Mexican mosquito fern in British Columbia.
• Table 4. Recovery actions for Mexican mosquito fern.