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San Luis Valley Regional Habitat Conservation Plan Draft for Public Review


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5.7Additional Conservation Measures


In addition to the purposes set forth in this HCP, it will also serve as a catalyst to complement, facilitate, and promote ongoing habitat conservation beyond what is required for mitigation. The following voluntary measures will promote and encourage riparian habitat conservation in the Valley for the benefit of riparian habitat and the covered species.

County Land Use Policies


Each County will adopt a land use ordinance that enables HCP implementation by providing a legal mechanism to extend the permit protections to individual landowners. In addition to the enabling ordinance, the Counties will be encouraged to develop or refine their land use policies and Land Use Code to discourage development impacts to riparian habitat.
As an example, updated land use policies may benefit riparian habitat conservation in the following ways:

  • Reduce the impacts of development on overall riparian habitat.

  • Provide the Counties with the guidance to help landowners voluntarily avoid impacts to riparian areas and minimize regulatory uncertainties during the development process.

  • Help maintain habitat quality on HCP mitigation acres by reducing the potential for degradation or fragmentation of nearby habitat areas (and thereby reducing the need for enhancement of mitigation acres).

  • Provide policies and guidance for developers and landowners that discourage impacts to riparian habitat and reduce the need for individual Section 7 consultations.

Conservation Support and Coordination


The District and Applicants will continue to work with Federal and State agencies, land trusts, local stakeholder organizations, and landowners to facilitate the continued conservation and enhancement of riparian habitat in the Valley. This coordination may include, but is not limited to:

  • Improved partnerships between willing landowners and habitat enhancement efforts by the NRCS, Partners for Fish and Wildlife, and other programs.

  • Improved partnerships between willing landowners and land trusts to complete additional conservation easements that protect riparian habitat.

  • Coordination with the establishment of the Rio Grande Natural Area, including planning and implementation, and potentially integrating the Natural Area into HCP implementation.

  • Additional Federal and State grant programs to facilitate ongoing riparian conservation (including ESA Section 6 grants, North American Wetlands Conservation Act, and GOCO grants).

Conservation Focus Areas


Additional habitat conservation on private lands will advance the goals and purposes of this HCP, and facilitate long-term implementation efforts. In particular, additional voluntary habitat conservation on private lands in the following geographical areas is consistent with this HCP and should be encouraged:

  • Rio Grande corridor between Alamosa and Del Norte,

  • Rio Grande/Conejos River confluence area,

  • Conejos River and Rio San Antonio south of Antonito,

  • Rio Grande south of Alamosa,

  • Saguache Creek west of Saguache,

  • Sangre de Cristo Creek east of Fort Garland, and

  • Culebra/Ventero Creeks between Sanchez Reservoir and Highway 142.

5.8Summary of Implementation Responsibilities


Implementation of this HCP will be a collaborative effort between the District, Applicants, and other implementation partners. Specific implementation responsibilities for each entity are summarized below.

Rio Grande Water Conservation District


  • Oversee HCP implementation

  • Provide staff support for HCP implementation

  • Identify and develop mitigation acres

  • Negotiate and secure landowner cooperative agreements, management agreements, or HCP-specific easement language

  • Track impacts and mitigation credits

  • Coordinate habitat quality monitoring on private mitigation lands

  • Repeat Valley-wide habitat mapping (every 10 years)

  • Coordinate habitat enhancement resources as needed for adaptive management

  • Coordinate the HCP steering committee

  • Coordinate education and outreach efforts

  • Work with the Applicants, Federal agencies, and other partners to coordinate additional conservation efforts and secure supplemental funding

State of Colorado Department of Natural Resources


  • Ongoing covered species surveys on State lands

  • Habitat quality monitoring on State lands

Counties (Alamosa, Conejos, Costilla, Mineral, Rio Grande, and Saguache)


  • Adopt and enforce land use ordinance language

  • Compile and mail landowner notification letters (every 10 years)

  • Report County-permitted activities with permanent impacts

  • Provide HCP information and guidance to landowners

Municipalities (Alamosa, Monte Vista, Del Norte, and South Fork)


  • Report municipal activities with permanent impacts

  • Report floodway clearing in excess of 4 acres/year

Landowners


  • No requirements

6.0Monitoring and Adaptive Management

6.1Monitoring


Monitoring the effectiveness of the conservation measures, and ensuring compliance with the implementation commitments are mandatory elements of a HCP. The Service elaborated on monitoring and adaptive management requirements for HCPs in its Five-Point Policy Guidance (64 FR 11485). The Service identifies two types of monitoring required for HCPs:

  1. Compliance monitoring – Monitoring and reporting necessary to demonstrate that HCP requirements are being carried out.

  2. Effectiveness monitoring – Monitoring and reporting requirements necessary to evaluate whether the HCP measures are achieving the biological goals and objectives. Effectiveness monitoring also provides information to support adaptive management decisions.

The HCP Handbook (Service and NMFS 1996) describes monitoring measures required by Section 10 regulations of the ESA:

For regional and other large-scale HCPs, monitoring programs should include periodic accountings of take, surveys to determine species status in project areas or mitigation habitats, and progress reports on fulfillment of mitigation requirements (e.g., habitat acres enrolled in mitigation lands) (p. 3-26).


Monitoring Approach


The District and Applicants will monitor compliance with the terms and conditions of the permit, and the effectiveness of mitigation measures. Monitoring also will be used to assess the need for adaptive management in response to information gained during monitoring plan implementation and to relevant changed circumstances. The District will provide monitoring for compliance and effectiveness throughout the 30-year duration of the permit.

The monitoring approach for this HCP will achieve the goals stated above by focusing on three general parameters:



  1. Valley-wide (macro) habitat quantity mapping

  2. Parcel-specific (micro) habitat quality evaluation

  3. Species occurrence monitoring

The first two parameters are habitat-based monitoring, while the third is based on surveys for the covered species. These monitoring types are described in the following sections. Detailed monitoring protocols and example data forms are provided in Appendix G.

Habitat-Based Monitoring


Riparian communities are dynamic and variable, and a standard index to habitat quality for the covered species has not been developed. Habitat-based monitoring focuses on monitoring trends and changes in vegetation and other landscape features such as hydrological conditions, habitat heterogeneity, or vegetation succession, which provide habitat for the covered species. Changes in habitat are assumed to influence changes in the distribution or abundance of covered species. Habitat-based monitoring also has the added benefit of tracking changes in habitat that may also affect many species that are not covered by this HCP.

Habitat-based monitoring will be conducted at two scales; Valley-wide (or macro-habitat scale), and mitigation parcel-specific (or microhabitat scale).


Monitoring Goals


As described in Section 1.4, some of the overall goals of this HCP are to protect habitat for the covered species in a manner that contributes to their long-term recovery, and to contribute to the long-term conservation and management of riparian habitat in the Valley. The specific goals of this monitoring plan are to:

  • Document compliance with this HCP, and the terms and conditions of the ITP and Implementing Agreement (compliance monitoring);

  • Detect and quantify positive and negative changes to woody riparian vegetation communities within the HCP boundary, and corresponding impact assumptions (macro-habitat scale) (effectiveness monitoring);

  • Detect and quantify positive and negative changes to woody riparian habitat for the covered species on mitigation lands (micro-habitat scale) (effectiveness monitoring);

  • Detect and quantify changes in the presence or abundance of the covered species on Federal and State core habitat areas (effectiveness monitoring);

  • Determine if the biological goals (species and habitat conservation) and sufficient habitat quality standards are being achieved on mitigation lands (effectiveness monitoring); and

  • Assess the need and set criteria for adaptive management.

Valley-Wide Habitat Mapping


As described in Section 2.2, existing woody riparian habitat was mapped along key drainages to serve as an indicator for the primary habitat needs of the covered species and the quantitative baseline for this HCP. This mapping will be updated every 10 years based on aerial photo-interpretation, or the most reasonably current and affordable mapping or remote sensing technology. Recent experience with riparian mapping for this HCP demonstrated that updating mapping on a five-year interval failed to detect any measurable habitat changes.27 Repeat macro-habitat mapping will be used to identify the following:

  • Quantity of woody riparian habitat with the HCP boundary

  • Quantity of woody riparian habitat on mitigation parcels

  • Ratio of tree/shrub habitat

Long-term trends in these characteristics will be evaluated and compared within a range of +/- 10 percent of the baseline.

Every 10 years, this revised habitat mapping will be used to track landscape-scale habitat changes and trends, revisit impact assumptions and calculations for the covered activities, and revise subsequent mitigation requirements (as needed). This revised habitat mapping is described further under Adaptive Management.


Core Habitat Monitoring


A key part of the habitat-based monitoring will be the establishment of reference sites on Federal and State lands that are known, or are believed, to support the covered species (core habitat). These references areas will:

  • Establish a baseline of habitat condition on lands that are managed to support native wildlife, including the covered species, and have been documented to provide habitat;

  • Track long-term changes in habitat composition in core habitat areas on Federal and State lands;

  • Track the effectiveness of habitat management and restoration efforts on Federal and State lands;

  • Facilitate implementation of micro-habitat monitoring protocol consistently across Federal, State, and mitigation lands; and

  • Provide a point of reference from which to compare habitat quality on mitigation lands.

Overall, the reference sites will be valuable in determining the suitability of potential or existing mitigation lands. As habitat conditions and quality change over time, these sites will help determine whether habitat variability (positive or negative changes) on mitigation lands is consistent with variability on Federal and State lands. The reference sites also will be valuable in identifying regional circumstances that are outside the control of the Applicants, and that are more appropriately addressed under Changed Circumstances.

Reference sites will be established in different parts of the Valley to account for variation in hydrological and habitat characteristics in different geographic areas (e.g., Rio Grande, Conejos River, and Closed Basin); and to ensure that mitigation lands in any part of the Valley have a “local” reference point with similar characteristics.

General locations for potential reference sites include:


  1. Rio Grande corridor west of Alamosa (State Wildlife Area)

  2. Rio Grande corridor south of Alamosa (Alamosa NWR)

  3. Conejos River (BLM land and/or State Wildlife Area)

  4. Saguache County (location to be determined)

  5. Costilla County (location to be determined)

Core habitat monitoring will be conducted as described under parcel-specific habitat monitoring below.

Parcel-Specific Habitat Monitoring


The cornerstone of the mitigation approach for this HCP is the conservation and enhancement of a sufficient number of acres of riparian habitat at a specified level of habitat quality (see Section 5). A key component of this approach is monitoring mitigation lands to ensure that sufficient habitat quality is maintained.

Microhabitat monitoring will be conducted on mitigation lands to quantify and evaluate if the quantity and quality of habitat is improving or degrading. Microhabitat monitoring will consist of the following:



  1. Parcel- or area-specific vegetation mapping based on the National Vegetation Classification System or other comparable system

  2. Habitat sampling to determine stand structure, cover, density, and species composition

  3. Encroachment of invasive plant species

  4. Photo documentation of typical habitat conditions from defined locations

Habitat sampling measurements will be incorporated into a Habitat Quality Index (HQI) that will determine the function and value (i.e., quality) of the habitat in providing the life requisites of covered species, as described in recovery plans or scientific literature. Habitat monitoring of all mitigation lands will be conducted on a rotating basis once every three years, and compared with baseline data and selected reference areas. Habitat quality on mitigation lands will be considered compliant with the HCP criteria if the HQI value is equal or greater than baseline or the reference area; whichever is lower.

An initial HQI worksheet, based on similar systems used to evaluate riparian habitat values by NRCS and CPW in the Valley, is provided in Appendix G. The HQI will be evaluated after the initial monitoring of mitigation and reference lands (within five years), and will be revised as necessary by the steering committee to ensure its effectiveness (see Adaptive Management below).


Restoration Monitoring


As described in Section 5.2, habitat restoration or enhancement efforts may be used to increase the size or improve the quality of mitigation lands. Restoration efforts also may be used individually for mitigation, once preliminary success can be demonstrated. In either case, the HQI monitoring described above will be used to evaluate the quality of the restored areas and their suitability for mitigation. The success of restoration will be determined by documenting that the restored habitat is progressing towards developing the habitat characteristics needed to support covered species (suitability). Success will be determined by maintaining an HQI value greater than ¾ the HQI value of the appropriate reference area. The ¾ HQI target is appropriate because many species of woody riparian vegetation will spread vegetatively or by seed and fill in gaps over time. The ¾ HQI value is conservative in that canopy cover, density, and structure will also continue to develop over time to full canopy spread increasing the suitability of the habitat for covered species.

Species Occurrence Monitoring


The District, with guidance from the Steering Committee, will coordinate species-specific monitoring actions for the flycatcher and cuckoo. The objectives of species-specific surveys are to conduct habitat occupancy surveys (presence/absence) in suitable habitat for flycatchers and cuckoos.

Southwestern Willow Flycatcher


Flycatcher surveys will be conducted within core habitat areas and on mitigation lands once every three years as follows:

  • General surveys within core habitat areas will be conducted by Federal and State agencies responsible for managing those public lands following the most current flycatcher survey protocol approved by the Service. Commitment to this survey effort will be ratified in the IA. Under the 2010 survey protocol (Sogge et al. 2010), general surveys would consist of three surveys—one in each of three survey periods: May 15 – 31; June 1 – 24; and June 25 – July 17.

  • Surveys on private mitigation lands will consist of a single callback survey conducted by the District in June or July during habitat monitoring.

Reports summarizing the findings of the surveys on both public and private lands will be submitted to the District and HCP administrator by the end of the calendar year. The reports will include survey locations identified by Township, Range, ¼ Section, or UTMs for both positive and negative surveys. Positive surveys will be reported to the Service and District within 24 hours of detection. The District will maintain a file with copies of the survey reports, and will summarize the results of the surveys in a brief table to be included in the annual report to the Service.

Western Yellow-billed Cuckoo


Surveys for cuckoos will be conducted simultaneously with flycatcher surveys described above. The surveys will follow the most current cuckoo survey protocol approved or accepted by the Service. The reporting of survey findings will be the same as described above.
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