Monday, October 16, 2023
ESA-Listed Species in AZ: Status and Needs
Tuesday, November 15, 2022
What is Mitigation?
| Mitigation hierarchy framework.(Source: Exponent) |
| Table from EPIC report linked above. |
In conclusion, mitigation can be a confusing concept, even for professionals. Government agencies are trying to specify compensatory mitigation when that is the subset of mitigation they mean, but even in official publications they often use the simple term mitigation. When someone says Mitigation they are usually talking about compensatory mitigation, or offsets. However, when talking about the mitigation hierarchy, other preventive conservation measures such as avoidance and minimization could also be included.
Wednesday, October 26, 2022
Upcoming Endangered Species Listing Decisions in Arizona 2022-2027
I found a 5-year workplan on the USFWS site and made a list of all of the AZ species that USFWS will make listing determinations for.
Its pretty interesting to look at what’s coming up. Lots of talussnails! But after the Sonoran desert tortoise (which they decided not to list), I think the next big one is the Monarch butterfly.
Also interesting that there’s no bumble bee species on this list, as I know they’ve been petitioned. Of course, this could all change as new species are added to the candidate list and priorities change...
FY22
Sonoran desert tortoise
-widely distributed in AZ deserts
- listing decision spring 2022: not warranted
Cactus ferrugous pygmy owl
-by end of calendar year
https://www.inaturalist.org/taxa/237012-Glaucidium-brasilianum-cactorum
https://www.audubon.org/news/this-tiny-desert-raptor-could-soon-regain-federal-protection
roundtail chub
gray wolf (western populations)
FY23
Joshua tree
Quitobaquito tryonia
FY24
Monarch butterfly
-widely distributed in AZ
A listing proposal is anticipated by November 2023, with
a final listing decision by end of Federal FY2024 (September 2024).
Las Vegas bearpoppy Arctomecon californica
Pinaleno talussnail Sonorella grahamensis
San Xavier talussnail Sonorella eremita
FY25
Ferris's copper butterfly Lycaena ferrisi
https://www.inaturalist.org/taxa/1360320-Tharsalea-rubidus-ferrisi
ASNF southwest of Springerville
Chisos coral-root Hexalectris revoluta
Sky island mountains
Threecorner milkvetch Astragalus geyeri var.
triquetrus
Grand Wash springsnail Pyrgulopsis bacchus
Kingman springsnail Pyrgulopsis conica
FY26
Arizona toad Bufo microscaphus microscaphus
- widely distributed in AZ
https://www.inaturalist.org/taxa/64982-Anaxyrus-microscaphus
Navajo bladderpod Lesquerella navajoensis
- habitat on Navajo Nation
Yuman Desert fringe-toed lizard Uma rufopunctata
Mojave poppy bee Perdita meconis
Bylas springsnail Pyrgulopsis arizonae
Gila tryonia Tryonia gilae
Huachuca woodlandsnail Ashmunella levettei
Squaw Park talussnail Maricopella allynsmithi
-populations are on city or county parks in the Phoenix
metro area https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.114155/Maricopella_allynsmithi
Verde Rim springsnail Pyrgulopsis glandulosa
https://www.inaturalist.org/taxa/111425-Pyrgulopsis-glandulosa
FY27
Morton's wild buckwheat Eriogonum mortonianum
Pipe Springs cryptantha Cryptantha
semiglabra
Source: https://www.fws.gov/media/national-listing-workplan-fiscal-years-2022-2027
More USFWS lists: https://ecos.fws.gov/ecp/species-reports
Thursday, September 15, 2022
Mitigation Banking Could Transform the Endangered Species Act
The Clean Water Act (CWA) --despite its ambiguities-- has the important provision of acre-for-acre wetland mitigation. In other words, the CWA ensures No Net Loss of protected wetlands.
The Endangered Species Act (ESA) --despite controversies over Critical Habitat-- has no automatic provision of no net loss of protected species habitats. Instead, it relies on bespoke mitigations on a project-by-project basis. Most projects are approved with incompletely mitigated impacts to species and their habitats. The result is continual loss of habitat.
Current proposed changes to habitat mitigation could help make ESA more like CWA, moving the ESA toward No Net Loss of habitat. The result would be improved regulatory certainty for projects, mitigation banking opportunities for conservation investors, and better outcomes for listed species.
Environmental Policy Innovation Center's Becca Madsen has more excellent & detailed analysis.