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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Density‐dependent responses of moose to hunting and landscape change

Ecological Solutions and Evidence, Год журнала: 2025, Номер 6(1)

Опубликована: Янв. 1, 2025

Abstract In many areas of the boreal forests and temperate mountains Canada, resource extraction activities have created forage conditions that are favourable to growth moose ( Alces alces ) populations. turn, these increased populations buoy abundance wolves Canis lupus ), which then negative impacts on caribou Rangifer tarandus Consequently, been declining where extraction, moose, occur. To abate unsustainable predation pressure by wolves, hunting quota was expanded for 17 years reduce stabilize population in Revelstoke Valley, British Columbia, Canada. However, a reduction forestry activity paired with habitat protections slowed early seral favour moose. both hunter‐caused mortality loss may contributing observed declines occurred during this period. Within changing regulatory biophysical landscape, we sought address two research objectives. First, evaluated how increasing influenced total yield harvested animals. We expected density‐dependent responses would bolster number harvestable animals landscape. Second, tested different forest harvest scenarios might influence habitat, wolf densities, thus rates into future decades. used data from GPS collars (39 individuals), eight aerial surveys, hunter statistics, estimates carrying capacity thresholds, records. The latter series spanned 1961–2020 informed selection function calculations our first objective as well predictive modelling second objective. Between 2003 2020, found amounts declined 44.8%. There were 42% more under quotas than projected be simulated status quo quota. As stabilized, higher recruitment (e.g. calf:cow ratios) further contributed Our simulations indicated only harvesting scenario low enough 2040 cease entirely 2020. Practical implication: an mitigated effects caribou, aided recovery, struck balance also provided food security recreational opportunities harvesters.

Язык: Английский

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Barriers and limits to adaptation in the Arctic

Current Opinion in Environmental Sustainability, Год журнала: 2025, Номер 73, С. 101519 - 101519

Опубликована: Фев. 28, 2025

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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Response of moose to forest harvest and management: a literature review

Canadian Journal of Forest Research, Год журнала: 2023, Номер 54(4), С. 366 - 388

Опубликована: Окт. 31, 2023

Moose are an iconic symbol of northern forests. In many jurisdictions, the management moose has focused on regulating harvest with less emphasis understanding moose–habitat relationships. We reviewed literature and summarised effects forest ecology moose. Greater than 50 years scientific studies document both positive negative associated activities such as silviculture road building. require spatially adjacent patches younger plant communities for forage older forests thermal security cover. Extensive rapid can result in prevalence young a corresponding reduction fitness populations. A warming climate likely will exacerbate broad-scale removal Resource roads create edge habitat that may serve forage, but those features increased hunting collisions vehicles facilitate movement predators. Post-harvest silviculture, including application herbicides, stand conditions provide very little or low-quality forage. The ecological societal benefits dependent provides mix old forest, employs retains adequate cover plants, minimises development roads.

Язык: Английский

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Importance of scale, season, and forage availability for understanding the use of recent burns by woodland caribou during winter

Canadian Journal of Forest Research, Год журнала: 2025, Номер 55, С. 1 - 18

Опубликована: Янв. 1, 2025

During winter, woodland caribou ( Rangifer tarandus caribou) may avoid burned forest for up to 60 years. Typically, that is the time required lichens recover following fire. We examined response of Klaza population (west-central Yukon, Canada) recent burns (≤50 years) during winter. quantified resource selection individual across winter range and use habitats were adjacent or within burns. selected used areas with greater density terrestrial lichen. There was considerable inter-animal variability, but in some season-years habitat stronger relatively small Approximately 6.2% GPS-collar locations located outside 500 m boundary a burn 5.6% occurred burn. late when snow deeper, demonstrated avoidance Our results suggest relationship between dynamic. Caribou will burns, such relationships are complicated by cumulative landscape change. It important recognise plasticity behaviour developing land-use strategies represent multi-year, seasonal requirements population.

Язык: Английский

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Spatial and Temporal Patterns of Wolf [Mahihkan(Cree),Tha(Denesuline),Amaruk(Inuktitut),Canis lupus] Occurrences on the Summer Range of the Eastern Migratory Cape Churchill Caribou Population in the Hudson Bay Lowlands of Manitoba

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Abstract Wolves ( Canis lupus ) function as a top predator across diverse ecosystems including the sub-arctic, and they have been managed in often controversial ways. Communities scientists are increasingly supporting minimally invasive research monitoring, using trail cameras. We employed network of 15 Reconyx cameras at three monitoring areas aimed detecting spatial temporal aspects wolf occurrences within summer range Eastern Migratory Cape Churchill caribou Wapusk National Park Hudson Bay Lowlands Manitoba, Canada from 2013-2021. In this first peer-reviewed quantitative study wolves region, we found that detection events were generally consistent years. Wolf distribution was consistently positively skewed toward southern part all experienced extreme environmental conditions, with 60°C temperature, low −32°C winter to high +28°C an annual change day length >11 hours between winter. occurred most commonly spring equal frequency during night overall but selected for nighttime September, October, November shortened dramatically.

Язык: Английский

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Wildlife, fire, and forestry: Understanding the spatial and temporal relationships between caribou habitat and disturbance

Global Ecology and Conservation, Год журнала: 2025, Номер unknown, С. e03636 - e03636

Опубликована: Май 1, 2025

Язык: Английский

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Advancing the consideration of ecological connectivity in environmental assessment: Synthesis and next steps forward

Impact Assessment and Project Appraisal, Год журнала: 2022, Номер 40(6), С. 451 - 459

Опубликована: Ноя. 2, 2022

Язык: Английский

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Grey wolves (Canis lupus) shift selection of anthropogenic landscape features following predator control in the Nearctic boreal forest

Biological Conservation, Год журнала: 2024, Номер 296, С. 110677 - 110677

Опубликована: Июнь 15, 2024

Язык: Английский

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