Peacock Vinyl Lichen (Leptogium polycarpum): management plan 2021 proposed

Official title: Management Plan for the Peacock Vinyl Lichen (Leptogium polycarpum) in Canada 2021 proposed

Species at Risk Act
Management Plan Series
Adopted under Section 69 of SARA

Cover photo
Peacock Vinyl Lichen
Document information

Recommended citation: Environment and Climate Change Canada. 2021. Management Plan for the Peacock Vinyl Lichen (Leptogium polycarpum) in Canada [Proposed]. Species at Risk Act Management Plan Series. Environment and Climate Change Canada, Ottawa. 2 parts, 4 pp. + 10 pp.

Official version: The official version of the recovery documents is the one published in PDF. All hyperlinks were valid as of date of publication.

Non-official version: The non-official version of the recovery documents is published in HTML format and all hyperlinks were valid as of date of publication.

For copies of the management plan, or for additional information on species at risk, including the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) Status Reports, residence descriptions, action plans, and other related recovery documents, please visit the Species at Risk (SAR) Public RegistryFootnote 1.

Cover illustration: © Timothy B. Wheeler

Également disponible en français sous le titre
« Plan de gestion du leptoge à quatre spores (Leptogium polycarpum) au Canada [Proposition] »

Content (excluding the illustrations) may be used without permission, with appropriate credit to the source.

Under the Accord for the Protection of Species at Risk (1996), the federal, provincial, and territorial governments agreed to work together on legislation, programs, and policies to protect wildlife species at risk throughout Canada.

In the spirit of cooperation of the Accord, the Government of British Columbia has given permission to the Government of Canada to adopt the Management Plan for the Peacock Vinyl (Leptogium polycarpum) in British Columbia (Part 2) under Section 69 of the Species at Risk Act (SARA). Environment and Climate Change Canada has included a federal addition (Part 1) which completes the SARA requirements for this management plan.

The federal management plan for the Peacock Vinyl LichenFootnote 2 in Canada consists of two parts:

Part 1 – Federal Addition to the Management Plan for the Peacock Vinyl (Leptogium polycarpum) in British Columbia, prepared by Environment and Climate Change Canada.

Part 2 – Management Plan for the Peacock Vinyl (Lepotgium polycarpum) in British Columbia, prepared by the British Columbia Ministry of Environment.

Part 1 – Federal Addition to the Management Plan for the Peacock Vinyl (Leptogium polycarpum) in British Columbia, prepared by Environment and Climate Change Canada

Preface

The federal, provincial, and territorial government signatories under the Accord for the Protection of Species at Risk (1996)Footnote 3 agreed to establish complementary legislation and programs that provide for effective protection of species at risk throughout Canada. Under the Species at Risk Act (S.C. 2002, c. 29) (SARA), the federal competent ministers are responsible for the preparation of management plans for listed species of special concern and are required to report on progress within five years after the publication of the final document on the SAR Public Registry.

The Minister of Environment and Climate Change and Minister responsible for the Parks Canada Agency is the competent minister under SARA for the Peacock Vinyl Lichen and has prepared the federal component of this management plan (Part 1), as per section 65 of SARA. To the extent possible, it has been prepared in cooperation with the British Columbia (B.C.) Ministry of Environment as per section 66(1) of SARA. SARA section 69 allows the Minister to adopt all or part of an existing plan for the species if the Minister is of the opinion that an existing plan relating to wildlife species includes adequate measures for the conservation of the species. The Province of B.C. provided the attached management plan for the Peacock Vinyl (Part 2) as science advice to the jurisdictions responsible for managing the species in British Columbia. It was prepared in cooperation with Environment and Climate Change Canada.

Success in the conservation of this species depends on the commitment and cooperation of many different constituencies that will be involved in implementing the directions set out in this plan and will not be achieved by Environment and Climate Change Canada, Parks Canada Agency, or any other jurisdiction alone. All Canadians are invited to join in supporting and implementing this plan for the benefit of the Peacock Vinyl Lichen and Canadian society as a whole.

Implementation of this management plan is subject to appropriations, priorities, and budgetary constraints of the participating jurisdictions and organizations.

Additions and modifications to the adopted document

The following sections have been included to address specific requirements of the federal Species at Risk Act (SARA) that are not addressed in the Management Plan for the Peacock Vinyl (Leptogium polycarpum) in British Columbia (Part 2 of this document, referred to henceforth as “the provincial management plan”) and/or to provide updated or additional information. The species is listed under SARA as the Peacock Vinyl Lichen (Leptogium polycarpum) and is referred to as the Peacock Vinyl (Leptogium ploycarpum) provincially. Both names refer to the same species.

Under SARA, prohibitions regarding the protection of species and their habitat do not apply to species of special concern. Conservation measures in the provincial management plan dealing with the protection of individuals and their habitat are still adopted to guide conservation efforts but would not result in federal legal protection.

1. Species status information

This section replaces information on the SARA legal designation for Peacock Vinyl Lichen in Canada in Section 2 of the provincial management plan.

The legal designation of Peacock Vinyl Lichen on SARA Schedule 1 is Special Concern (2017).

2. Effects on the environment and other species

A strategic environmental assessment (SEA) is conducted on all SARA recovery planning documents, in accordance with the Cabinet Directive on the Environmental Assessment of Policy, Plan and Program ProposalsFootnote 4. The purpose of a SEA is to incorporate environmental considerations into the development of public policies, plans, and program proposals to support environmentally sound decision-making and to evaluate whether the outcomes of a recovery planning document could affect any component of the environment or any of the Federal Sustainable Development Strategy’s (FSDS)Footnote 5 goals and targets.

Conservation planning is intended to benefit species at risk and biodiversity in general. However, it is recognized that implementation of management plans may also inadvertently lead to environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of all environmental effects, with a particular focus on possible impacts upon non-target species or habitats. The results of the SEA are incorporated directly into the management plan itself, but are also summarized below in this statement.

The provincial management plan for Peacock Vinyl Lichen contains a section describing the effects of management activities on other species (that is, Section 8). Environment and Climate Change Canada adopts this section of the provincial management plan as the statement on effects of management activities on the environment and other species. Conservation planning activities for Peacock Vinyl Lichen will be implemented with consideration for all co-occurring species at risk, such that there are no negative impacts to these species or their habitats. Some management actions for Peacock Vinyl Lichen (for example, inventory and monitoring, threat mitigation, habitat conservation, education, and research) may promote the conservation of other species at risk that overlap in distribution and rely on similar habitat attributes.

Part 2 – Management Plan for the Peacock Vinyl (Leptogium polycarpum) in British Columbia, prepared by the British Columbia Ministry of Environment

Prepared by the B.C. Ministry of Environment
September 2015

About the British Columbia Management Plan Series

This series presents the management plans that are prepared as advice to the Province of British Columbia. Management plans are prepared in accordance with the priorities and management actions assigned under the British Columbia Conservation Framework. The Province prepares management plans for species that may be at risk of becoming endangered or threatened due to sensitivity to human activities or natural events.

What is a management plan?

A management plan identifies a set of coordinated conservation activities and land use measures needed to ensure, at a minimum, that the target species does not become threatened or endangered. A management plan summarizes the best available science-based information on biology and threats to inform the development of a management framework. Management plans set goals and objectives, and recommend approaches appropriate for species or ecosystem conservation.

What’s next?

Direction set in the management plan provides valuable information on threats and direction on conservation measures that may be used by individuals, communities, land users, conservationists, academics, and governments interested in species and ecosystem conservation.

For more information

To learn more about species at risk recovery planning in British Columbia, please visit the Ministry of Environment Recovery Planning webpage at:
<http://www.env.gov.bc.ca/wld/recoveryplans/rcvry1.htm>

Recommended citation

B.C. Ministry of Environment. 2015. Management plan for peacock vinyl (Leptogium polycarpum) in British Columbia. B.C. Ministry of Environment, Victoria, BC. 10 pp.

Cover illustration/photograph

Curtis Bjork

Additional copies

Additional copies can be downloaded from the B.C. Ministry of Environment Recovery Planning webpage at:
<http://www.env.gov.bc.ca/wld/recoveryplans/rcvry1.htm>

Disclaimer

The B.C. Ministry of Environment has prepared this management plan, as advice to the responsible jurisdictions and organizations that may be involved in managing the species.

This document identifies the management actions that are deemed necessary, based on the best available scientific and traditional information, to prevent peacock vinyl populations in British Columbia from becoming endangered or threatened. Management actions to achieve the goals and objectives identified herein are subject to the priorities and budgetary constraints of participatory agencies and organizations. These goals, objectives, and management approaches may be modified in the future to accommodate new objectives and findings.

The responsible jurisdictions have had an opportunity to review this document. However, this document does not necessarily represent the official positions of the agencies.

Success in the conservation of this species depends on the commitment and cooperation of many different constituencies that may be involved in implementing the directions set out in this management plan. The B.C. Ministry of Environment encourages all British Columbians to participate in the conservation of peacock vinyl.

Acknowledgements

Brenda Costanzo (B.C. Ministry of Environment [MOE]) prepared this management plan. Additional assistance was provided by Trevor Goward (Enlichened Consulting), Jenifer Penny and Marta Donovan (B.C. Conservation Data Centre), Peter Fielder (MOE), Leah Westereng, (MOE), and Byron Woods (B.C. Ministry of Forests, Lands and Resource Operations). Additional comments by Joanne Hirner, (B.C. Parks), Wendy Dunford (Environment Canada-Canadian Wildlife Service-National Capital Region), Kella Sadler (EC-CWS-Pacific Yukon Region), Matt Huntley (EC-CWS-PYR). The Land Based Investment Strategy funded the technical review and threats assessment.

Executive summary

Peacock vinyl (Leptogium polycarpum) is a leafy, gelatinous (jellyskinned) lichen forming patches 2–5 cm in diameter. Lobes are rounded to orbicular in shape. The upper surface is pale to dark greyish or brown, shiny, hairless with partly sunken spore-bearing bodies, and wrinkled when dry. The lower surface is paler than the upper surface, and can either be naked or with tufts of white hairs.

Peacock vinyl was designated as Special Concern by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) owing to its restricted distribution and population size. It occurs only in the coastal forests of southwestern British Columbia and in one isolated location in Haida Gwaii, where it is found growing on the mossy branches of deciduous trees, especially Bigleaf Maple and Red Alder.

The species is not yet listed on Schedule 1 of the Species at Risk Act (SARA). In British Columbia, peacock vinyl is ranked S1S2 (critically imperiled to imperiled) by the B.C. Conservation Data Centre and is on the provincial Red list. The B.C. Conservation Framework ranks peacock vinyl as a priority 1 under goals 1 and 3 (1 = contribute to global efforts for species and ecosystem conservation; 3 = maintain the diversity of native species and ecosystems).

Threats to this sensitive lichen include air pollution from industrial and agricultural activities, forestry and associated infrastructure, as well as drought and storms and flooding due to climate change.

The management goal is to maintain all known extant populations and any future populations of peacock vinyl that may be found in British Columbia.

The following are the management objectives:

  1. to secure long-term protectionFootnote 6 for the known populations and habitats of peacock vinyl
  2. to determine the levels of real and potential threats to this species and its habitat and to mitigate their effects
  3. to confirm the distribution of peacock vinyl (including new locations) and to reliably determine population trends

1. Committee on the Status of Endangered Wildlife in Canada (COSEWIC) species assessment information

Assessment summary: May 2011

Common name:*Peacock Vinyl Lichen

Scientific name:** Leptogium polycarpum

Status: Special Concern

Reason for designation: This jellyskin lichen, endemic to western North America, reaches the limit of its northern distribution in Canada where it is known from only 13 locations in the coastal forests of southwestern British Columbia with one isolated location in Haida Gwaii. This lichen grows on deciduous trees, especially bigleaf maple and red alder. Almost 1000 individuals of this lichen are known but confined to only 67 trees. In addition to stochastic events, threats to this sensitive lichen include air pollution from industrial and agricultural activities, forestry and associated infrastructure, as well as seasonal drought due to climate change.

Occurrence: British Columbia

Status history: Designated Special Concern in May 2011.

* Committee on the Status of Endangered Wildlife in Canada.

**Common and scientific names reported in this management plan follow the naming conventions of the B.C. Conservation Data Centre, which may be different from names reported by COSEWIC.

2. Species status information

Peacock Vinyla

Legal designation:

FRPA:b N/A

OGAA:b N/A

B.C. Wildlife Act:c No

SARA:d Schedule 1 – No

Conservation statuse

B.C. List: Red B.C. Rank: S1S2 (2010)

National rank: N1N2 (2011)

Global Rank: GNR (2000)

Subnational ranks:f WA (SNR)

B.C. conservation framework (CF)g

Goal 1: Contribute to global efforts for species and ecosystem conservation.

Priority:h #1 (2009)

Goal 2: Prevent species and ecosystems from becoming at risk.

Priority: #6 (2009)

Goal 3: Maintain the diversity of native species and ecosystems.

Priority: #1 (2009)

CF action groups:f

Inventory

a Data source: B.C. Conservation Data Centre (2014) unless otherwise noted.

b No = not listed in one of the categories of wildlife that requires special management attention to address the impacts of forest and range activities on Crown land under the Forest and Range Practices Act (FRPA; Province of British Columbia 2002) and/or the impacts of oil and gas activities on Crown land under the Oil and Gas Activities Act (OGAA; Province of British Columbia 2008).

c No = not designated as wildlife under the B.C. Wildlife Act (Province of British Columbia 1982).

d No = not on any Schedules under the Species at Risk Act (SARA). This species was recently reassessed by COSEWIC as Special Concern. This assessment will be reviewed by the Governor in Council (GIC) who may, on the recommendation of the Minister, amend the List to reclassify this species as Special Concern on Schedule 1 of SARA. If the GIC does not make a decision within nine months of receiving the COSEWIC assessment, the Minister shall by order amend the List according to COSEWIC’s assessment.

e S = subnational; N = national; G = global; T = refers to the subspecies level; B = breeding; X = presumed extirpated; H = possibly extirpated; 1 = critically imperiled; 2 = imperiled; 3 = special concern, vulnerable to extirpation or extinction; 4 = apparently secure; 5 = demonstrably widespread, abundant, and secure; NA = not applicable; NR = unranked; U = unrankable.

f Data source: NatureServe (2015).

g Data source: B.C. Ministry of Environment (2010).

h Six-level scale: Priority 1 (highest priority) through to Priority 6 (lowest priority).

3. Species information

3.1 Species description

Peacock vinyl is a leafy, gelatinous (jellyskinned) lichen forming patches 2–5 cm in diameter. The thallus lobes are rounded to orbicular in shape, 5–10 mm wide, and translucent when wet. The upper surface is pale to dark greyish or brown, shiny, hairless with partly sunken spore-bearing bodies 0.2–0.5 mm across (apothecia). The upper surface is wrinkled when dry. The lower surface is paler than the upper surface, and can either be naked or with tufts of white hairs. The inner sections of the thallus contain fungal strands and olive-green cyanobacterial cells (Nostoc spp.) (COSEWIC 2011).

3.2 Populations and distribution

3.2.1 Distribution

Peacock vinyl is endemic to western North America, where it occurs along the Pacific coast eastward to the foot of the coastal mountain ranges (Figure 1). Within this area, peacock vinyl is distributed from northern British Columbia to northern California (COSEWIC 2011). In Canada, bigleaf maple (Acer macrophyllum) is frequently its host tree species.

In British Columbia peacock vinyl occurs on southern Vancouver Island and along adjacent mainland inlets northward to the Homathko Valley (Figure 2). Eastward, it is found in the main valleys through the Coast Range where bigleaf maple is present. There is one outlying population in Haida Gwaii on South Moresby Island outside the range of the bigleaf maple (COSEWIC 2011).

3.2.2 Population size

There are 22 known populationsFootnote 7 of peacock vinyl in British Columbia, most consisting of 10 to 300 thalli on one or more deciduous trees (Table 1). Within patches of lichen, individual thalli are counted as discrete units. Total thallus count from a range of years from 2007 - 2013 is 1139–1321. Of the 22 known populations, 15 are presumed extant. The presumed extant populations include two new populations, which were discovered since the COSEWIC status report (2011), at Victoria – Montreul Hill (E021) and Victoria – Albert Head (EO22), and thirteen previously-known populations. Of the remaining seven populations, three are considered presumed extirpated: Hope (E03), Chilliwack – Bridal Falls (E04), Haney – Evan’s Creek (EO8), two are considered historical by the B.C. Conservation Data Centre: Haida Gwaii – South Moresby (E01) and Sidney (EO2), and two are of unconfirmed status: Victoria – Mount Work (E06) and Shawnigan Lake – Old Baldy Mountain (EO7).

Figure 1, read long description

Figure 1. Peacock vinyl distribution in North America (COSEWIC 2011).

Long description

This figure represents the Peacock Vinyl Lichen distribution in North America. The distribution is represented by scatter dots that begin in Graham Island and continue south along the cost into Vancouver, interior British Columbia and Washington State, USA. The most southern point being in California. 

Figure 2, read long description

Figure 2. Peacock vinyl distribution in British Columbia (adapted from COSEWIC 2011).

Long description

This figure represents the distribution of the Peacock Vinyl Lichen in British Columbia. The distribution is represented by a series of dots symbolizing extant localities, white circles with black borders symbolizing localities unconfirmed, white triangles with borders symbolizing presumed extirpated and dots symbolizing historic populations scattered across Vancouver Island and interior British Columbia. Distribution occurs in Victoria, British Columbia and Nanaimo, British Columbia.

Table 1. Summary and description of peacock vinyl populations in B.C.

Population namea

Population status

Location description

B.C. CDC EO#b

COSEWIC site #

Collector/dates observed

Number of thalli/host species

Land tenure

Haida Gwaii – South Moresby

HistoricalFootnote 8

Haida Gwaii, south Moresby Island near Jedway; along road to foot of Harriet Harbour;

EO1

2

I.M. Brodo

July 1967

Unknown

Crown Land

Port Alberni – Sproat Lake

Extant

Port Alberni area, Sproat Lake

EO9

9

V. Miao

Aug. 1997

T. Goward  May 2009

Not documented in 1997; 10 thalli on 2 deciduous trees in 2009

Sproat Lake Provincial Park

Port Alberni – Clutesi Creek

Extant

Port Alberni, Sproat Lake (Clutesi Creek), Taylor Arm Park

EO16

16

T. Goward and C.R. Bjork  May 2009

35 thalli on 3 Acer macrophyllum

Taylor Arm Provincial Park

Port Alberni – Meconella Ridge

Extant

Port Alberni, Meconella Ridge trail

EO17

17

T. Goward  May 2009

15 thalli on 4 Acer macrophyllum

Crown land

Shawnigan Lake – Old Baldy Mountain

Unconfirmed – not revisited in 2009

Shawnigan Lake area, Old Baldy Mountain. (Hollings Creek);

EO7

7

W.J. Noble  June 1975

Unknown

Unknown

Victoria – Mount Work

Unconfirmed – location not found in 2009

Victoria area (Mount Work), old farm;

EO6

6

W.J. Noble 1975

Unknown

Private

Victoria – Mount Newton

Extant

Victoria near summit Mount Newton

EO15

15

T. Goward  May 2009

10 thalli on 2 Quercus garryana

John Dean Provincial Park

Victoria – Montreul Hillc

Extant

Victoria, Montreul Hill, Galloping Goose trail

EO21

N/A

R. Batten February 2013

1–50 thalli on Acer macrophyllum

Galloping Goose Trail Regional Park

Victoria – Albert Headc

Extant

Albert Head

EO22

N/A

C. Bjork October 2013

168–300 thalli on Acer, Arbutus, Quercus

Dept. of National Defence

Sidney

Historical

Vancouver Island, Sidney;

EO2

1

J. Macoun August 1914

Unknown

Private?

Sooke – Ayum Creek

Extant

Sooke area, Ayum Creek;

EO14

14

T. Goward

May 2009

300 thalli on 10 Acer macrophyllum

Ayum Creek Regional Park Reserve

Saltspring Island

Extant

Saltspring Island, along Cranberry Road to Mount Maxwell;

EO5

5

T. Tonsberg September 1989

T. Goward  May 2009

Not documented in 1989; 50 thalli on 4 Alnus rubra in 2009

Unknown

Toba Valley – Dalgleish Creek

Extant

Coast ranges, upper Toba Valley (Dalgleish Creek);

EO10

10

C.R. Bjork

June 2009

100 thalli on 1 Populus trichocarpa

Unknown

Toba Valley – Raccoon Creek

Extant

Coast ranges, upper Toba Valley, Toba logging camp (Raccoon Creek);

EO11

11

C.R. Bjork

June 2007

10 thalli on 1 Alnus rubra

Unknown

Southgate Valley – Icewall Creek

Extant

Coast Ranges, Bute Inlet, Southgate Valley, near mouth of Icewall Creek;

EO12

12

C.R. Bjork August 2007

75 thalli on 1 Tsuga heterophylla

Crown land

Whistler – Brandywine Falls

Extant

Coast Ranges, Whistler area, southeast of Brandywine Falls;

EO18

18

C.R. Bjork

May 2009

100 thalli on 5 Acer macrophyllum

Brandywine Falls Provincial Park

Southgate Valley – Southgate River

Extant

Coast Ranges, Bute Inlet, Southgate Valley; 4 km E of mouth of Southgate River;

EO19

19

C.R. Bjork

September 2009

200 thalli on 20 Alnus rubra and Acer glabrum

Crown

Homathko Valley – White Mantle Creek

Extant

Coast Ranges, Bute Inlet, Homathko Valley (White Mantle Creek) , east side of valley across from Brew Creek;

EO20

20

C.R. Bjork

September 2009

50 thalli on 10 Alnus rubra

Crown

Haney – Evans Creek

Presumed extirpated

Haney area, Evans Creek;

Footnote 9

EO8

8

W.B. Schofield February 1978

0

Golden Ears Provincial Park

Chilliwack – Bridal Falls

Presumed extirpated

Chilliwack area, Bridal Falls;

EO4

4

T. Goward September 1978

0

Provincial park

Hope

Presumed extirpated

Hope, east side of town;

EO3

3

I.M. Brodo September 1969

0

Private?

Yale – Spuzzum

Extant

Fraser Canyon, Yale Area (Spuzzum), north of Sailor Bar Tunnel;

EO13

13

T. Goward and C.R. Bjork, May 2009

15 thalli on 4 Acer macrophyllum

Crown land

a Refer to BC Species and Ecosystem Explorer mapped occurrences website at: http://a100.gov.bc.ca/pub/eswp/eoMap.do?id=28112. NOTE: not all occurrences are necessarily mapped or available on this site.

b Element occurrence numbers from the B.C. Conservation Data Centre. Refer to the BC  Species and Ecosystem Explorer webpage at : <http://www.env.gov.bc.ca/atrisk/toolintro.html>.

c Population discovered since status report was written.

3.3 Habitat and biological needs of Peacock Vinyl

Peacock vinyl occurs in maritime regions mostly in a Mediterranean-type climate characterized by warm, dry summers and mild, wet winters (COSEWIC 2011). However, the known occurrences are within both the Coastal Douglas-Fir (CDF) and Coastal Western Hemlock (CWH) biogeoclimatic zones (Meidinger and Pojar 1991), the latter being outside of this Mediterranean-type climate. At the northern part of its range, the population in Haida Gwaii in the CWH zone is characterized by a cool mesothermal climate having cool summers and mild winters (Meidinger and Pojar 1991). The one location for peacock vinyl is situated in an area that is not exposed to heavy summer rainfall (COSEWIC, 2011).

Peacock vinyl occurs at low elevations, between sea level and about 400 m, on the mossy branches of deciduous trees, usually bigleaf maple (Acer macrophyllum) and red alder (Alnus rubra), although it has also been found on Douglas maple (Acer glabrum var. douglasii), arbutus (Arbutus menziesii), black cottonwood (Populus trichocarpa), western hemlock (Tsuga heterophylla) and Garry oak (Quercus garryana). These trees usually occur in young to mid-seral forests over nutrient-rich soils, and are assumed to have a bark pH above 5.0 which is required by “jellyskin” lichens. This basic pH is found on deciduous trees, conifer bark being too acidic. As well, the colonization of tree bark only occurs in humid microsites, and in many locations, peacock vinyl does not grow on the actual bark of the tree, but instead it colonizes epiphytic moss mats. These moss mats may contribute to its establishment and maintenance – presumably by slowing rates of drying after rain (COSEWIC 2011).

Lichens are a symbiotic relationship between a fungal and an algal component. In peacock vinyl, the latter component is a cyanobacterium (blue-green algae). A strain of Nostoc is the most common cyanobacterial component in species of jelly lichens (Brodo et al. 2001). As with other cyanobacterial lichens, peacock vinyl requires liquid water (not water vapour) for photosynthesis. Peacock vinyl requires habitats that are subject to frequent wetting by rain or heavy dew, at least during the cool period suitable for growth (COSWIC 2011).

The fungal component of lichens have an exclusive reliance on sexual reproduction through producing spore-bearing structures (apothecia) which are found on the surface of the lichen thallus. Lichen dispersal is complex and requires the fungal spores encountering a suitable host as well as a suitable lichen alga (Goward 2011). Some cyanolichens are very specific with respect to the strains of cyanobacteria that are required for successful thallus formation (Myllys et al. 2007).

3.4 Ecological role

Peacock vinyl may contribute very locally to the nitrogen cycle due to the nitrogen-fixing cyanobacteria within it; the nitrogen released from this lichen is likely to benefit organisms growing in the immediate vicinity (COSEWIC 2011).

3.5 Limiting factors

Limiting factors are generally not human induced and include characteristics that make the species or ecosystem less likely to respond to recovery/conservation efforts.

Once the fungal spores are dispersed (for example, by wind or insects), they must then find a compatible photosynthetic partner (cyanobacteria) with which to form a new lichen. Successful re-establishment is likely to occur only under a rather specific range of environmental conditions, for the cyanobacteria these are liquid water and pH above 5 (COSEWIC 2011), and where suitable host trees are available for its development. Peacock vinyl is vulnerable to any environmental change which affects reproduction, and could result in the demise of the species within one or two generations (COSEWIC 2011).

4. Threats

Threats are defined as the proximate activities or processes that have caused, are causing, or may cause in the future the destruction, degradation, and/or impairment of the entity being assessed (population, species, community, or ecosystem) in the area of interest (global, national, or subnational) (Salafsky et al. 2008). For purposes of threat assessment, only present and future threats are considered.Footnote 10 Threats do not include limiting factors, which are presented in Section 3.5.Footnote 11

4.1 Threat assessment

The threat classification below is based on the IUCN-CMP (World Conservation Union–Conservation Measures Partnership) unified threats classification system and is consistent with methods used by the B.C. Conservation Data Centre. For a detailed description of the threat classification system, see the Open Standards website (Open Standards 2014). Threats may be observed, inferred, or projected to occur in the near term. Threats are characterized here in terms of scope, severity, and timing. Threat “impact” is calculated from scope and severity. For information on how the values are assigned, see Master et al. (2012) and table footnotes for details. Threats for the peacock vinyl were assessed for the entire province (Table 2)

Table 2. Threat classification table for peacock vinyl.

Threat #

Threat description

Impacta

Scopeb

Severityc

Timingd

Population(s) or location(s) or site(s)

5

Biological resource use

Low

Small

Slight

High

Not applicable

5.3

Logging and wood harvesting

Low

Small

Slight

High

All

9

Pollution

Low

Small

Extreme

High

Not applicable

9.5

Air-borne pollutants

Low

Small

Extreme

High

One locality in the Yale – Spuzzum (EO13)

11

Climate change and severe weather

Low

Pervasive

Slight

High

Not applicable

11.2

Droughts

Low

Restricted

Slight

High

South eastern Vancouver Island

11.4

Storms and flooding

Low

Pervasive

Slight

High

All

a Impact – The degree to which a species is observed, inferred, or suspected to be directly or indirectly threatened in the area of interest. The impact of each threat is based on Severity and Scope rating and considers only present and future threats. Threat impact reflects a reduction of a species population or decline/degradation of the area of an ecosystem. The median rate of population reduction or area decline for each combination of scope and severity corresponds to the following classes of threat impact: Very High (75% declines), High (40%), Medium (15%), and Low (3%). Unknown: used when impact cannot be determined (for example, if values for either scope or severity are unknown); Not Calculated: impact not calculated as threat is outside the assessment time (for example, timing is insignificant/negligible (past threat) or low (possible threat in long term)); Negligible: when scope or severity is negligible; Not a Threat: when severity is scored as neutral or potential benefit.

b Scope – Proportion of the species that can reasonably be expected to be affected by the threat within 10 years. Usually measured as a proportion of the species’ population in the area of interest. (Pervasive = 71–100%; Large = 31–70%; Restricted = 11–30%; Small = 1–10%; Negligible < 1%).

c Severity – Within the scope, the level of damage to the species from the threat that can reasonably be expected to be affected by the threat within a 10-year or 3-generation timeframe. For this species a generation time of 15 years (COSEWIC 2011) was used resulting in severity being scored over a 45-year timeframe. Usually measured as the degree of reduction of the species’ population. (Extreme = 71–100%; Serious = 31–70%; Moderate = 11–30%; Slight = 1–10%; Negligible < 1%; Neutral or Potential Benefit > 0%).

d Timing – High = continuing; Moderate = only in the future (could happen in the short term [< 10 years or 3 generations]) or now suspended (could come back in the short term); Low = only in the future (could happen in the long term) or now suspended (could come back in the long term); Insignificant/Negligible = only in the past and unlikely to return, or no direct effect but limiting.

4.2 Description of threats

Taken together, the cumulative impacts of multiple threats on peacock vinyl are negligible; hence the overall province-wide Threat Impact is LowFootnote 12. Threats identified include; logging and wood harvesting, agricultural aerosols, and increased intensity of storms and flooding due to climate change (Table 2). Details of threats are discussed below.

4.2.1 Threats with Impacts to Peacock Vinyl
IUCN-CMP Threat 5. Biological resource use (impact low)

5.3 Logging and wood harvesting

Logging and removal of host trees is a potential threat. Loss of host trees would lead to peacock vinyl’s disappearance at particular locations. Even if the host trees remained intact after logging, altered microsite conditions beyond the ecological tolerance of peacock vinyl (for example, due to increased exposure to sunlight or more rapid drying) could similarly lead to its local extirpation. (T. Goward, pers. comm., 2014). As well, tree removal does occur in parks and protected areas. Hazard tree assessment and removal occurs near park recreational facilities such as washrooms, picnic areas, viewpoints, trails, etc. Because this lichen may be limited to as little as one tree at a site, even localized removal of one hazard tree could have a significant impact if the tree removed is one with the lichen. In addition, larger scale tree removal sometimes occurs in parks associated with development/redevelopment of facilities, or utility right of way (ROW) construction and maintenance (J. Hirner, pers. comm., 2015).

IUCN-CMP Threat 9. Pollution (impact low)

9.5 Air-borne pollutants

Nitrogenous aerosols from intensive agriculture in the Fraser Valley have likely resulted in the disappearance of peacock vinyl from the Chilliwack – Bridal Falls (EO4) location. Large pig and poultry farms near Chilliwack have created a nitrogenous plume favourable to some nutrient-demanding lichens, but detrimental to peacock vinyl and other lichen species in which the symbiont partner is a cyanobacterium. Peacock vinyl would be unable to re-establish via spores as the optimal chemical conditions for algal growth would be compromised (T. Goward, pers. comm., 2014), as cyanolichens are intolerant of extraneous nitrogenous enrichment (T. Goward, pers. comm., 2015). Ammonia from agricultural sources, including livestock production and spreading of manure in the Lower Fraser Valley, is one of two main nitrogen sources. As such, the increased levels of nitrogen in the Fraser Valley are probably causing nitrogen stress to lichen communities in low-elevation areas (Raymond et al. 2010). Future eastward expansion of this activity could possibly cause the further extirpation of this species near Yale – Spuzzum (EO13). This need not happen through die-off of mature thalli, but could result through attrition owing to a chemically mediated inability of this lichen to establish from spores. In this scenario, peacock vinyl could conceivably persist for the next 10 years at this location, but would die out within 45 years (three generations).

IUCN-CMP Threat 11. Climate change and severe weather (impact low)

11.2 Droughts (impact low)

Peacock vinyl is a maritime lichen essentially restricted to Mediterranean-type climates where summer rainfall is low. Climate change in coastal areas is projected to bring warmer, drier, summers and heavier winter rains (COSEWIC 2011). As peacock vinyl requires liquid water for establishment during the growth period, a prolonged summer drought would affect establishment and growth and thereby causing a decline in the abundance of the species (COSEWIC 2011). As well, if a warming or drying trend occurs, this could cause peacock vinyl to inhabit higher elevations for the cooler and more humid climate. These higher elevations (above 400m) would be outside the optimal nutrient-rich soils required for the host trees that peacock vinyl lives on (COSEWIC 2011). A combination of loss of liquid water and nutrients could lead to a decreased capacity to establish (T. Goward, pers. comm., 2014).

11.4 Storms and flooding (impact low)

In general, climate models project an increased risk for more frequent extreme precipitation in the Northwest, but it is unknown what the patterns and level of intensity will be. If there are more frequent winter storms occurring due to climate change, host trees could be blown down and lichens ripped from trees in high wind events. This lichen grows on smaller branches, near the tips, and is therefore vulnerable to wind events (T. Goward, pers. comm., 2014).

4.2.2 Threats with unknown impacts or outside assessed timeframe
IUCN-CMP Threat 11. Climate change and severe weather

11.1 Habitat shifting and alteration (not scored)

Peacock vinyl occurs on bigleaf maple and other deciduous and coniferous trees that are in turn rooted in nutrient-rich ancient Pleistocene marine bottom sediments (COSEWIC 2011). Presumably the cations absorbed from these sediments maintain the relatively elevated bark pH required for this species’ establishment. The upper range of these sediments occurs at about 400 m, and above this elevation conditions are likely too acidic to support peacock vinyl (T. Goward, pers. comm., 2014). If the changes in the biogeoclimatic zones due to climatic warming or drying trends are as predicted (Hamann and Wang 2006), the environmental conditions (liquid water; correct cation exchange and subsequent pH) may limit species establishment.

5. Management goal and objectives

5.1 Management goal

The management goal is to maintain all known extant populations and any future populations of peacock vinyl that may be found in British Columbia.

5.2 Rationale for the management goal

The overall goal is to maintain all known extant populations of the species within British Columbia. This includes the current extant populations as well as any populations that are found in the future. No quantitative management goal is possible for peacock vinyl as basic population demographics and trends are unknown for all populations. As with many other rare plant species, we lack adequate information about the historical distribution of peacock vinyl and it is unknown whether this species was once more widespread that it is now (T. Goward, pers. comm., 2015).

Recovery of this species should focus on improving the probability that it will persist in the wild. However, to prevent peacock vinyl from becoming threatened or endangered, all known extant populations should be maintained. Once the knowledge gaps have been fulfilled, the goal can be refined.

5.3 Management objectives

  1. To secure long-term protectionFootnote 13 for the known populations and habitats of peacock vinyl
  2. To determine the levels of real and potential threats to this species and its habitat and to mitigate their effects
  3. To confirm the distribution of peacock vinyl (including new locations) and to reliably determine population trends

6. Approaches to meet objectives

6.1 Actions already completed or underway

The following actions have been categorized by the action groups of the B.C. Conservation Framework (B.C. Ministry of Environment 2010). Status of the action group for this species is given in parentheses.

Inventory (completed)

6.2 Recommended management actions

Table 3. Recommended management actions and suggested implementation schedule for peacock vinyl.

Recovery objective

Actions to meet objectives

Threata or concern addressed

Priorityb

1

Obtain more precise location data and land tenure for each population and inform land managers of the species location.

3.3; 5.3

Essential

1

Assess impacts of threats at all sites.

All threats

Essential

1

Determine appropriate measure to protect habitat at an ecosystem-level approach. When the species is recorded on Crown lands, initiate protection measures under existing legislation and government policy.

3.3; 5.3

Essential

1

Develop and implement a strategy for communicating with land users/stakeholders about recovery activities as required.

3.3; 5.3

Essential

1

Develop or refine site-specific management plans for protected areas, and municipal and federal lands to reduce or remove threats to populations and habitat.

3.3; 5.3

Necessary

1

Develop best management practices for mitigating threats.

3.3; 5.3

Necessary

1

Manage known occurrences of the species in a way that minimizes impact.

3.3; 5.3; 9.3

Essential

2

Assess and monitor the threats to determine if they are potential or real.

All threats

Essential

2,3

Monitor locations to assess the status of populations and the effects of any management activities taken to protect habitat.

All threats

Beneficial

2, 3

Develop and implement a monitoring protocol that provides reliable estimates of population size and trends, and to detect human and natural threats at each known location.

All threats

Beneficial

2, 3

Monitor status of population and threats at extant locations every 10 years, or when land management activities change.

All threats

Beneficial

3

Identify and map suitable habitat localities for targeted inventory.

3.3; 5.3

Necessary

3

Prioritize areas for inventory and conduct inventory.

3.3; 5.3

Necessary

3

Advise appropriate landowners of the potential for the species to be present on their lands and to conduct inventory for the species, in particular in Environmental Assessments for resource development.

3.3; 5.3

Necessary

a Threat numbers according to the IUCN-CMP classification (see Table 2 for details).

b Essential (urgent and important, needs to start immediately); Necessary (important but not urgent, action can start in 2–5 years); or Beneficial (action is beneficial and could start at any time that was feasible).

7. Measuring progress

The performance indicators presented below provide a way to define and measure progress toward achieving the management goal and objectives. Performance measures are listed below for each objective with the target of achieving each stated measurable within the next five years.

Measurable(s) for objective 1

Measurable(s) for objective 2

Measurable(s) for objective 3

8. Effects on other species

Recovery planning activities for peacock vinyl will be implemented with consideration for all co-occurring species at risk, such that there are no negative impacts to co-occurring species at risk or their habitats. Other species at risk include the blue-listed twisted oak moss (Syntrichia laevipila) which grows on Garry oak trees and is assessed as Special Concern by COSEWIC (BC CDC 2014). 

9. References

B.C. Conservation Data Centre. 2014. BC Species and Ecosystems Explorer. B.C. Min. Environ., Victoria, BC. <http://a100.gov.bc.ca/pub/eswp/> [Accessed July 8, 2014]

B.C. Ministry of Environment. 2010. Conservation framework. B.C. Min. Environ., Victoria, BC. <http://www.env.gov.bc.ca/conservationframework/index.html> [Accessed July 8, 2014]

Brodo, I.M.,. S.D. Sharnoff, S. Sharnoff. 2001. Lichens of North America. Yale University Press, New Haven and London.

Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 2011. COSEWIC assessment and status report on the Peacock Vinyl lichen Leptogium polycarpum in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa, ON. ix + 24 pp. <http://www.registrelep-sararegistry.gc.ca/sar/assessment/status_e.cfm>

Goward, T. 2010. Twelve Readings on the Lichen Thallus. IX. Paralichens. Evansia 27 (2) 40-46.  http://www.waysofenlichenment.net/ways/readings/essay9 [Accessed March 17, 2015]

Hamann, A. and T. Wang. 2006. Potential effects of climate change on ecosystem and tree species distribution in British Columbia. Ecology 87(11):2773–2786.

Master, L.L., D. Faber-Langendoen, R. Bittman, G.A. Hammerson, B. Heidel, L. Ramsay, K. Snow, A. Teucher, and A. Tomaino. 2012. NatureServe conservation status assessments: factors for evaluating species and ecosystems at risk. NatureServe, Arlington, VA. <http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusfactors_apr12_1.pdf> [Accessed July 8, 2014]

Meidinger, D. and J. Pojar, eds. 1991. Ecosystems of British Columbia. B.C. Min. For., Victoria, BC.

Myllys, L., S. Stenroos, A. Thell, and M. Kuusinen. 2007. High cyanobiont selectivity of epiphytic lichens in old growth boreal forest of Finland. New Phytologist: 173 (3):621-629.

NatureServe. 2015. NatureServe explorer: an online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, VA. <http://www.natureserve.org/explorer> [Accessed July 28, 2014]

Open Standards. 2014. Threats taxonomy. <http://cmp-openstandards.org/using-os/tools/threats-taxonomy/> [Accessed July 8, 2014]

Province of British Columbia. 1982. Wildlife Act [RSBC 1996] c. 488. Queen’s Printer, Victoria, BC. <http://www.bclaws.ca/EPLibraries/bclaws_new/document/ID/freeside/00_96488_01> [Accessed July 8, 2014]

Province of British Columbia. 2002. Forest and Range Practices Act [RSBC 2002] c. 69. Queen’s Printer, Victoria, BC. <http://www.bclaws.ca/EPLibraries/bclaws_new/document/ID/freeside/00_02069_01> [Accessed July 8, 2014]

Province of British Columbia. 2008. Oil and Gas Activities Act [SBC 2008] c. 36. Queen’s Printer, Victoria, BC. <http://www.bclaws.ca/EPLibraries/bclaws_new/document/ID/freeside/00_08036_01> [Accessed July 8, 2014]

Raymond, B.A., T. Bassingthwaighte and D. P. Shaw. 2010. Measuring nitrogen and sulphur deposition in the Georgia Basin, British Columbia, using lichens and moss.  J. Limnol., 69 (Suppl. 1):22-32.

Salafsky, N., D. Salzer, A.J. Stattersfield, C. Hilton-Taylor, R. Neugarten, S.H.M. Butchart, B. Collen, N. Cox, L.L. Master, S. O’Connor, and D. Wilkie. 2008. A standard lexicon for biodiversity conservation: unified classifications of threats and actions. Conserv. Biol. 22:897–911.

Whitfield, P.H. 2001. Linked hydrologic and climate variations in British Columbia and the Yukon. Environ. Monit. Assess. 67(1–2):217–238 in Gayton, D. 2008. Impacts of climate change on British Columbia’s biodiversity – a literature review. FORREX Research Extension Society, Kamloops, BC.

Personal communications

Trevor Goward, Enlichened Consulting Ltd., Clearwater, BC.

Joanne Hirner, Conservation Specialist, BC Parks, South Coast Region, Surrey, BC.

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2021-01-29