Endangered species lack research on the outcomes of conservation action

Conservation Science and Practice, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Abstract Given widespread biodiversity declines, there is an urgent need to ensure that conservation interventions are working. Yet, evidence regarding the effectiveness of actions often lacking. Using a case study 209 terrestrial species listed as Endangered in Canada, we conducted literature review collate base on to: (1) explore outcomes documented for each and (2) identify knowledge gaps. Action‐oriented research constituted only 2% all peer‐reviewed across target species, 61% found no investigating actions. Protected areas, habitat creation, artificial shelter, alternative farming practices were broadly beneficial most which these assessed. Habitat restoration frequently studied, but 38% harmful, ineffective, or demonstrated mixed results. The prescribed burns, timber harvesting approaches, vegetation control was examined greatest number yet 17%–30% negative effects. Our synthesis demonstrates lack published many implemented recovery at risk extinction, highlighting alarming gap literature.

Язык: Английский

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Habitat loss accelerates for the endangered woodland caribou in western Canada

Conservation Science and Practice, Год журнала: 2021, Номер 3(7)

Опубликована: Апрель 26, 2021

Abstract Habitat loss is often the ultimate cause of species endangerment and also a leading factor inhibiting recovery. For this reason, species‐at‐risk legislation, policies plans typically focus on habitat conservation restoration as mechanisms for To assess effectiveness these instruments in decelerating loss, we evaluated spatiotemporal changes an iconic endangered species, woodland caribou ( Rangifer tarandus ). We quantified forest cover, key proxy habitat, all subpopulations Alberta British Columbia, Canada. Despite efforts under federal provincial recovery plans, requirements listed Canada's Species at Risk Act, lost twice much they gained during 12‐year period (2000–2012). Drivers varied by ecotype, with Boreal Northern Mountain affected most fire Southern more harvest. Our case study emphasizes critical gaps between planning management actions, which are core expectation legislation. Loss from 2000 to 2018 has accelerated. Linear features within ranges have increased over time, particularly seismic lines ranges, estimated that only 5% functionally regenerated. findings support idea short‐term actions such predator reductions translocations will likely just delay extinction absence well‐considered management. Given magnitude ongoing change, it clear unless cumulative impacts land‐uses effectively addressed through consider anthropogenic natural disturbances, fail achieve self‐sustaining populations across North America.

Язык: Английский

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Indigenous‐led conservation: Pathways to recovery for the nearly extirpatedKlinse‐Zamountain caribou

Ecological Applications, Год журнала: 2022, Номер 32(5)

Опубликована: Март 23, 2022

Abstract Indigenous Peoples around the northern hemisphere have long relied on caribou for subsistence and ceremonial community purposes. Unfortunately, despite recovery efforts by federal provincial agencies, are currently in decline many areas across Canada. In response to recent dramatic declines of mountain populations within their traditional territory, West Moberly First Nations Saulteau (collectively, “Nations”) came together create a new vision lands they stewarded shared. The focused Klinse‐Za subpopulation, which had once encompassed so that Elders remarked were “like bugs landscape.” declined from ~250 1990s only 38 2013, rendering harvest nonviable infringing treaty rights livelihood. collaboration with groups governments, this Indigenous‐led conservation initiative paired short‐term population actions, predator reduction maternal penning, long‐term habitat protection an effort self‐sustaining population. Here, we review these actions promising evidence abundance has more than doubled animals 2013 101 2021, representing rapid growth actions. With looming extirpation averted, securing landmark agreement 2020 protects over 7986‐km 2 area. Agreement provides >85% subpopulation (up 1.8% protected pre‐conservation agreement) affords moderate neighboring subpopulations (29%–47% areas, up 0%–20%). This set both Canadian governments path recover reinstate culturally meaningful hunt. highlights how governance leadership can be catalyst needed establish enhance endangered species recovery, honor cultural connections now imperiled wildlife.

Язык: Английский

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The role of power in leveraging the diverse values of nature for transformative change

Current Opinion in Environmental Sustainability, Год журнала: 2023, Номер 64, С. 101352 - 101352

Опубликована: Сен. 19, 2023

Язык: Английский

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Value articulation in environmental appraisal: which values, whose values, and how valued?

Current Opinion in Environmental Sustainability, Год журнала: 2023, Номер 63, С. 101294 - 101294

Опубликована: Май 26, 2023

Язык: Английский

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Effectiveness of population‐based recovery actions for threatened southern mountain caribou

Ecological Applications, Год журнала: 2024, Номер 34(4)

Опубликована: Апрель 17, 2024

Abstract Habitat loss is affecting many species, including the southern mountain caribou ( Rangifer tarandus ) population in western North America. Over last half century, this threatened population's range and abundance have dramatically contracted. An integrated model was used to analyze 51 years (1973–2023) of demographic data from 40 subpopulations assess effectiveness population‐based recovery actions at increasing growth. Reducing potential limiting factors on populations offered a rare opportunity identify causes decline methods recovery. Southern declined by 51% between 1991 2023, 37% were functionally extirpated. Wolf reduction only action that consistently increased growth when applied isolation, combinations wolf reductions with maternal penning or supplemental feeding provided rapid but four subpopulations. As 52%, compared simulation no interventions. When predation pressure reduced, observed, even under contemporary climate change high levels habitat loss. Unless will continue be extirpated well before conservation restoration can become effective.

Язык: Английский

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Feminist Ecologies

Annual Review of Environment and Resources, Год журнала: 2022, Номер 47(1), С. 149 - 171

Опубликована: Авг. 1, 2022

In times of devastating ecological crisis, where can we find a route map to collectively halt current trends destruction? this review, examine feminist studies’ recent contributions activism and theorizing regarding extraction, emerging ecologies, multispecies justice. By bringing in salient research from the fields political ecology, ecofeminism, decolonial/anticolonial feminisms, point ways which thought action has opened up spaces for recognizing, envisioning, making life-affirming ecologies rather than extractive systems destruction. We refer former as emergent emancipatory that is, always process becoming capable defying subverting oppression based on gender, race, ethnicity, class, sexuality, caste, ability, species other forms discrimination—and, thus, protecting defending life living worlds.

Язык: Английский

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A palaeogenomic investigation of overharvest implications in an endemic wild reindeer subspecies

Molecular Ecology, Год журнала: 2024, Номер 33(5)

Опубликована: Янв. 27, 2024

Overharvest can severely reduce the abundance and distribution of a species thereby impact its genetic diversity threaten future viability. remains an ongoing issue for Arctic mammals, which due to climate change now also confront one fastest changing environments on Earth. The high-arctic Svalbard reindeer (Rangifer tarandus platyrhynchus), endemic Svalbard, experienced harvest-induced demographic bottleneck that occurred during 17-20th centuries. Here, we investigate changes in diversity, population structure, gene-specific differentiation after this overharvesting event. Using whole-genome shotgun sequencing, generated first ancient historical nuclear (n = 11) mitochondrial 18) genomes from (up 4000 BP) integrated these data with large collection modern genome sequences 90) infer temporal changes. We show hunting resulted major restructuring populations. Near-extirpation followed by pronounced drift has altered allele frequencies important genes contributing diverse biological functions. Median heterozygosity was reduced 26%, while only limited extent, likely already low pre-harvest complex post-harvest recolonization process. Such genomic erosion isolation populations past anthropogenic disturbance will play role metapopulation dynamics (i.e., extirpation, recolonization) under further change. Our results case study therefore emphasize need understand long-term interplay past, current, stressors wildlife conservation.

Язык: Английский

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Ratchet effects revisited: power effects and systematic bias in natural resource management

FACETS, Год журнала: 2025, Номер 10, С. 1 - 10

Опубликована: Янв. 1, 2025

Regulatory ratchets arise when governance appears to be effective, but actually masks a steady loss of natural capital. This occurs biases in environmental impact assessment (EIA) systematically underestimate the true large developments, generated by statistical convention fixing α at 0.05 (Type 1 error or false positive rate; i.e., probability concluding that development will have an there is none) while β, negative rate (failing detect impact, Type 2 error), often fixed 0.2. asymmetry (β > α) generates higher likelihood mistakenly permitting than preventing it. Beyond bias EIA, routine regulations are ineffective due low compliance, inadequate thresholds, and broad exemptions, which tend cryptically institutionalize net loss. Measuring inefficiency regulation foundational correcting regulatory identifying pathways towards no Like from major cumulative protections also needs estimated offset active habitat restoration; this should delivered as core program resource management agencies, with goal fully integrating mitigation hierarchy into governance.

Язык: Английский

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Reproducing extractivism: A political ecology analysis of strategic environmental assessment and hydrocarbon extraction in the Arctic

Geoforum, Год журнала: 2025, Номер 162, С. 104275 - 104275

Опубликована: Апрель 14, 2025

Язык: Английский

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