Global Ecology and Conservation最新文献

Mapping suitable habitat and Anthropocene refugia for Ethiopian Guerezas: Insights for their conservation

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-15 DOI: 10.1016/j.gecco.2025.e03547

Chala Adugna Kufa , Afework Bekele , Anagaw Atickem , Desalegn Chala , Diress Tsegaye , Torbjørn Ergon , Nils C. Stenseth , Dietmar Zinner

Ethiopia is home to two subspecies of Colobus guereza, C. g. guereza and C. g. gallarum. Whereas C. g. guereza is listed as Least Concern by IUCN, the conservation status of C. g. gallarum is unclear, but according to a recent assessment, it will most likely be listed as Vulnerable, because of habitat loss due to agricultural expansion. We used climate data to model the habitat suitability for both taxa in a comparative study to identify suitable habitats within and outside of protected areas that may serve as Anthropocene refugia. Our ensemble models estimated 168,731 km² as climatically suitable habitat for C. g. guereza and 69,542 km² for C. g. gallarum with an overlap between the two taxa of 17.2 %. Areas that qualified as refugia, i.e., areas covered by forest, were 47,101 km² (only 27.9 % of the total suitable habitat) and 8430 km² (12.1 % of the suitable habitat) for C. g. guereza and C. g. gallarum, respectively. Of these, 39.8 % (C. g. guereza) and 53.7 % (C. g. gallarum) are within Ethiopia’s current protected area network. Given that potential Anthropocene refugia are found only partly within protected areas, conservation management should include this information when developing conservation strategies for both taxa. As the majority of suitable habitats for the two colobus taxa exist in non-forested regions, afforestation in these areas would be highly beneficial and is strongly recommended.

埃塞俄比亚有两个疣猴亚种：C. g. guereza 和 C. g. gallarum。guereza 被世界自然保护联盟列为 "最不关注 "物种，而 C. g. gallarum 的保护状况尚不清楚，但根据最近的一项评估，由于农业扩张导致栖息地丧失，它很有可能被列为 "易危 "物种。在一项比较研究中，我们利用气候数据建立了这两个分类群的栖息地适宜性模型，以确定保护区内外可能作为人类世避难所的适宜栖息地。我们的集合模型估计，168,731 平方公里的气候适宜性栖息地适用于 C. g. guereza，69,542 平方公里的气候适宜性栖息地适用于 C. g. gallarum，两个分类群之间的重叠率为 17.2%。符合避难所条件的区域，即被森林覆盖的区域，对 C. g. guereza 和 C. g. gallarum 而言分别为 47101 平方公里（仅占适宜栖息地总面积的 27.9%）和 8430 平方公里（占适宜栖息地总面积的 12.1%）。其中，39.8%（C. g. guereza）和 53.7%（C. g. gallarum）位于埃塞俄比亚目前的保护区网络内。鉴于潜在的人类世栖息地只有部分位于保护区内，保护管理部门在为这两个类群制定保护战略时应将这一信息纳入其中。由于这两个疣猴类群的大部分适宜栖息地都在非森林地区，在这些地区植树造林将非常有益，因此强烈建议在这些地区植树造林。

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引用次数: 0

Landscape features outside the airport exerted direct and indirect impact on bird community characteristics inside the airport

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-15 DOI: 10.1016/j.gecco.2025.e03542

Xunqiang Mo , Jianzhong Xu , Mengxuan He , Ziyi Wang , Hong Yuan , Yuyue Wang , Ranran Wu , Linghui Tian , Weiying Chen , Lanlan Li

The presence of bird communities within an airport can impact the likelihood of bird strikes occurring, with airport birds often being influenced by the surrounding habitat. When implementing measures to prevent bird strikes, one effective approach involves modifying the landscape around the airport to alter the birds within the airport. However, the relationship between landscape features and bird characteristics inside the airport remains unclear, posing challenges for bird strike management. In our study, we examined landscape features surrounding the airport and bird community characteristics both inside and outside the airport over three years. Our research aimed to investigate how the landscape features influenced external bird characteristics and subsequently impacts the bird community within the airport. The results revealed that: (1) Passeriformes were the dominant birds detected inside the airport, with Passer montanus being the most abundant species, followed by Alauda arvensis and Hirundo rustica. (2) Airport displayed a complex bird network, with Passeriformes playing significant roles in connecting woodland, abandoned area, and park. Furthermore, bird community composition of the airport differed significantly from those in woodland, abandoned area, and park. (3) Landscape features directly influenced bird community network characteristics within the airport, as well as impacting bird community diversity. In abandoned area, landscape features affected bird community diversity outside the airport, subsequently influencing the network and diversity characteristics of bird community within the airport.

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引用次数: 0

Calcium carbonate content for two morphotypes of an indicator charophyte species across a depth and light gradient in a mesotrophic lake 中营养湖中指示叶藻物种两种形态的碳酸钙含量跨越深度和光照梯度

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-15 DOI: 10.1016/j.gecco.2025.e03546

Michał Brzozowski , Mariusz Pełechaty

This study investigates the role of light availability and depth for calcium carbonate (CaCO₃) content in two distinct morphotypes of Lychnothamnus barbatus in Lake Kuźnickie, a mesotrophic lake in Western Poland. Lychnothamnus barbatus is a rare charophyte with high ecological and paleoecological significance, exhibiting phenotypic plasticity to adapt to environmental conditions. Fieldwork conducted in August 2019 encompassed sampling across a depth gradient (0.5–6.5 m), with measurements of photosynthetically active radiation (PAR), water chemistry, and L. barbatus biomass. Laboratory analyses included loss-on-ignition (LOI) to quantify organic matter and CaCO₃ content in dry plant material. Results revealed significant differences in CaCO₃ encrustation efficiency between morphotypes, with the elongated, deep-water morphotype displaying lower encrustation rates than shallow water morphotype. These findings underscore the utility of L. barbatus as a bioindicator for both contemporary and historical aquatic ecosystems, offering insights into carbonate precipitation in a model temperate mesotrophic lake hosting one of the biggest population of the globally rare charophyte.

本研究调查了波兰西部中营养湖库兹尼基湖（Lake Kuźnickie）中两种不同形态的鲃鱼（Lychnothamnus barbatus）的碳酸钙（CaCO₃）含量受光照和深度影响的情况。Lychnothamnus barbatus是一种罕见的叶绿藻，具有很高的生态学和古生态学意义，表现出适应环境条件的表型可塑性。2019 年 8 月开展的野外工作包括在深度梯度（0.5-6.5 米）上取样，测量光合有效辐射（PAR）、水化学和鲃的生物量。实验室分析包括燃烧损失率（LOI），以量化干植物材料中的有机物和 CaCO₃含量。结果表明，不同形态之间的 CaCO₃ 结壳效率存在明显差异，细长的深水形态的结壳率低于浅水形态。这些发现强调了鲃属植物作为当代和历史水生生态系统生物指标的实用性，为了解全球罕见的鲃属植物最大种群之一所在的温带中营养模型湖的碳酸盐沉淀情况提供了见解。

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引用次数: 0

Indigenous Lands inhibit mining-induced deforestation in the Brazilian Amazon 土著土地抑制了巴西亚马逊地区因采矿而导致的森林砍伐

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-15 DOI: 10.1016/j.gecco.2025.e03540

Luiz Guilherme dos Santos Ribas , Mauro Galetti

Indigenous Lands (ILs) have been recognized as valuable tools for Amazon conservation. Originally established to protect indigenous rights and culture, they have unintentionally become essential for environmental conservation. ILs cover approximately 23 % of the Brazilian Legal Amazon and face significant threats, including from mining activities. Proposed legislative changes aim to facilitate mineral exploration within ILs, leading to an increase in mining claims and illegal mining activities. This study assesses the impact of ILs in the Brazilian Legal Amazon on mining-induced deforestation by comparing it to a counterfactual scenario in the absence of ILs. The results indicate that ILs are effective in avoiding mining-induced deforestation, preventing the accumulated deforestation of approximately 25 million hectares between 2004 and 2019. This corresponds to 20 % of all ILs’ territories and 4.7 % of the Brazilian Legal Amazon extension. Although their effectiveness has declined over the years, this underscores the importance of ILs in protecting nature and indigenous communities. The results also suggest that the individual impacts of ILs on mining-induced deforestation vary across the Brazilian Amazon. These individual variations highlight challenges in which decision-makers should strengthen governance, enhance enforcement, and implement targeted policies to safeguard the Amazon rainforest and indigenous rights.

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引用次数: 0

Infrastructure profile and surrounding land use determine bird-train collision risk in a High-Speed Railway

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-13 DOI: 10.1016/j.gecco.2025.e03538

Lourenço Falcão Rodrigues , Jesús Herranz Barrera , Eladio L. García de la Morena , Cristina Mata Estacio , Juan E. Malo

High-Speed Railways (HSRs) are a growing transportation mode with significant environmental advantages, particularly in reducing carbon emissions. However, their direct impacts on wildlife, especially birds, are not fully understood. This study investigates the factors influencing bird-train collisions and risky bird crossings (crossings through the danger zone, defined as the 8.5-meter area between the railway tracks and the catenary) along a 300 km section of an HSR line in Spain. Using on-board video data, we recorded 675 bird risky crossing events over two years of data collection, totalling 127 journeys and 34,250 km of cumulative travel. Geographic Information System (GIS) data was used to explore three environmental factors affecting risky crossings and potential collision risks: (i) railway height (orography), (ii) surrounding landscape, and (iii) wildlife protected areas. Our findings reveal that certain HSR infrastructure features, such as the presence of tall embankments and surrounding landscape such as nearby open lands (crops and shrubland), significantly increase the frequency of risky crossings. Additionally, we found that species associated with human modified landscapes were particularly prone to these risky crossings, whereas forest birds were rarely observed performing risky crossings. These results highlight that birds’ collision risk is influenced by the biotic changes caused by the HSR. This research offers critical insights into the environmental impacts of HSRs on avian species, offering guidance for future infrastructure development and mitigation strategies.

高速铁路（HSR）是一种不断发展的运输方式，具有显著的环境优势，尤其是在减少碳排放方面。然而，人们对其对野生动物（尤其是鸟类）的直接影响并不完全了解。本研究调查了影响鸟类与列车相撞以及鸟类危险穿越（穿越危险区，定义为铁轨与导线之间 8.5 米的区域）的因素，研究地点位于西班牙一条 300 公里长的高铁线路上。利用车载视频数据，我们在两年的数据收集过程中记录了 675 次鸟类冒险穿越事件，总计 127 次旅程和 34,250 公里的累计行程。我们利用地理信息系统 (GIS) 数据探讨了影响鸟类危险穿越和潜在碰撞风险的三个环境因素：(i) 铁路高度（地形），(ii) 周围景观，以及 (iii) 野生动物保护区。我们的研究结果表明，高铁基础设施的某些特征，如高大路堤的存在和周围景观，如附近的开阔地（农作物和灌木丛），会显著增加风险穿越的频率。此外，我们还发现，与人类改造过的地貌相关的鸟类特别容易发生这些危险穿越，而森林鸟类则很少发生危险穿越。这些结果突出表明，鸟类的碰撞风险受到高铁造成的生物变化的影响。这项研究为了解高铁对鸟类的环境影响提供了重要见解，为未来的基础设施开发和缓解策略提供了指导。

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引用次数: 0

Three decades of the practice of decentralised forest management in Africa: A systematic review of current knowledge and prospects

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-13 DOI: 10.1016/j.gecco.2025.e03525

Hamzath Akambi Séivè Kora , Juliano Sènanmi Hermann Houndonougbo , Florent Noulèkoun , Eric Etchikinto Agoyi , Achille Ephrem Assogbadjo , Brice Sinsin

Decentralised Forest Management (DFM), a forest management approach involving local communities, has been implemented in many countries worldwide to remedy the failure of state-centred forest management to conserve resources. This review shed new insights into the progress of DFM in Africa. Despite the great interest in forest management, many African countries have limited awareness of DFM. Our in-depth bibliometric analysis based on multiple online search engines covered the period 1992–2021 and yielded 1064 articles, of which 245 were selected for this review. Publications recorded on DFM came from 25 countries, covering four of the five African sub-regions. Approximately 77 % of the retained publications came from East Africa alone. Community participation, institutional arrangements, and contribution of DFM to forest conservation and community livelihoods were the main foci of the studies. Apart from the Village Land Forest approach, which devolves full power to local communities in Tanzania, most DFM schemes in Africa are implemented through deconcentration or delegation, whereby the local communities are primarily used as a workforce. This resulted in low interest among local people in forestry activities and limited implementation of DFM following the cessation of the initial DFM projects. Our analysis also highlighted gaps in knowledge about DFM regarding adjacent land use, conflict resolution, and ethnobotnical study. Our findings should guide scholars in their future research, as well as decision-makers in developing sound community-based management strategies for tropical forests in the context of their overexploitation and rapid degradation. We argue that significant efforts are still needed to achieve the ideal implementation of the DFM approach in Africa.

{"title":"Three decades of the practice of decentralised forest management in Africa: A systematic review of current knowledge and prospects","authors":"Hamzath Akambi Séivè Kora , Juliano Sènanmi Hermann Houndonougbo , Florent Noulèkoun , Eric Etchikinto Agoyi , Achille Ephrem Assogbadjo , Brice Sinsin","doi":"10.1016/j.gecco.2025.e03525","DOIUrl":"10.1016/j.gecco.2025.e03525","url":null,"abstract":"<div><div>Decentralised Forest Management (DFM), a forest management approach involving local communities, has been implemented in many countries worldwide to remedy the failure of state-centred forest management to conserve resources. This review shed new insights into the progress of DFM in Africa. Despite the great interest in forest management, many African countries have limited awareness of DFM. Our in-depth bibliometric analysis based on multiple online search engines covered the period 1992–2021 and yielded 1064 articles, of which 245 were selected for this review. Publications recorded on DFM came from 25 countries, covering four of the five African sub-regions. Approximately 77 % of the retained publications came from East Africa alone. Community participation, institutional arrangements, and contribution of DFM to forest conservation and community livelihoods were the main foci of the studies. Apart from the Village Land Forest approach, which devolves full power to local communities in Tanzania, most DFM schemes in Africa are implemented through deconcentration or delegation, whereby the local communities are primarily used as a workforce. This resulted in low interest among local people in forestry activities and limited implementation of DFM following the cessation of the initial DFM projects. Our analysis also highlighted gaps in knowledge about DFM regarding adjacent land use, conflict resolution, and ethnobotnical study. Our findings should guide scholars in their future research, as well as decision-makers in developing sound community-based management strategies for tropical forests in the context of their overexploitation and rapid degradation. We argue that significant efforts are still needed to achieve the ideal implementation of the DFM approach in Africa.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"59 ","pages":"Article e03525"},"PeriodicalIF":3.5,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Almost nothing left to lose: Suitable habitat for glacial relicts strongly declines under future climate and land use scenarios 几乎一无所有在未来气候和土地利用情景下，冰川遗迹的适宜栖息地将大幅减少

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-13 DOI: 10.1016/j.gecco.2025.e03541

Michael Boxriker , Viktoria Ferenc , Pierre Liancourt , Mike Thiv

Species distributions is shifting, along elevational and latitudinal gradients, likely reflecting the influence of climate change. Yet, land use also influences plant species distribution. This makes it challenging to pinpoint the primary driver and their respective contributions to the change. Glacial relicts, small populations of arctic-alpine species at the margin of their ecological range are considered reliable indicators of climate change impact. The habitats where they occur are also usually threatened by land use. They are thus an ideal system to study the effect of these two key drivers. We used four vascular plant species (Trifolium spadiceum, Traunsteinera globosa, Gentiana lutea and Bellidiastrum michelii) from wet and cold environments, and used species distribution models to study the effects of climate change on their ranges, incorporating high-resolution environmental data on climate, topography, and geology, alongside species occurrence data from long-term monitoring in SW-Germany. The resulting suitability maps were masked with land use maps, to assess the additional effects of land use. To obtain projections of potential future distributions we additionally modelled distribution under future climate and land use scenarios. Across various future climate scenarios, the suitable area for all species decreased by an average of 60 % on average due to climate change. Land use alone, significantly reduces suitable space, decreasing it by an average of 72 % under current and future climate and land use change scenarios. Despite the severe susceptibility to climate change, our findings reveal an additional, equal or even stronger influence of land use on the distribution of glacial relicts that will precipitate their decline. Ultimately, our findings can facilitate development of conservation strategies essential for the preservation and sustainable management, that are crucial for preserving not only glacial relict populations but also the overall biodiversity in these areas.

{"title":"Almost nothing left to lose: Suitable habitat for glacial relicts strongly declines under future climate and land use scenarios","authors":"Michael Boxriker , Viktoria Ferenc , Pierre Liancourt , Mike Thiv","doi":"10.1016/j.gecco.2025.e03541","DOIUrl":"10.1016/j.gecco.2025.e03541","url":null,"abstract":"<div><div>Species distributions is shifting, along elevational and latitudinal gradients, likely reflecting the influence of climate change. Yet, land use also influences plant species distribution. This makes it challenging to pinpoint the primary driver and their respective contributions to the change. Glacial relicts, small populations of arctic-alpine species at the margin of their ecological range are considered reliable indicators of climate change impact. The habitats where they occur are also usually threatened by land use. They are thus an ideal system to study the effect of these two key drivers. We used four vascular plant species (<em>Trifolium spadiceum, Traunsteinera globosa, Gentiana lutea</em> and <em>Bellidiastrum michelii)</em> from wet and cold environments, and used species distribution models to study the effects of climate change on their ranges, incorporating high-resolution environmental data on climate, topography, and geology, alongside species occurrence data from long-term monitoring in SW-Germany. The resulting suitability maps were masked with land use maps, to assess the additional effects of land use. To obtain projections of potential future distributions we additionally modelled distribution under future climate and land use scenarios. Across various future climate scenarios, the suitable area for all species decreased by an average of 60 % on average due to climate change. Land use alone, significantly reduces suitable space, decreasing it by an average of 72 % under current and future climate and land use change scenarios. Despite the severe susceptibility to climate change, our findings reveal an additional, equal or even stronger influence of land use on the distribution of glacial relicts that will precipitate their decline. Ultimately, our findings can facilitate development of conservation strategies essential for the preservation and sustainable management, that are crucial for preserving not only glacial relict populations but also the overall biodiversity in these areas.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"59 ","pages":"Article e03541"},"PeriodicalIF":3.5,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Land use configuration shapes climate change vulnerability of gallery forests in a savannah ecosystem 土地利用结构决定了热带草原生态系统中廊道森林的气候变化脆弱性

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-12 DOI: 10.1016/j.gecco.2025.e03533

Henrike Schulte to Bühne , Joseph A. Tobias , Sarah M. Durant , Nathalie Pettorelli

Interactions between anthropogenic pressures make it difficult to predict biodiversity change and plan conservation interventions. Climate change is expected to drive widespread ecological change in the tropics over the coming decades, but it is unclear where and when these changes are going to intensify, or reduce, the impacts of additional pressures from human land use. To address this uncertainty, we apply a novel vulnerability assessment framework to show how land use configuration modifies the extent of potential harms arising from climate change to gallery forests, an important vegetation type in tropical savannahs. We highlight how the spatial distribution of climate change (specifically, change in annual rainfall) interacts with the spatial distribution of land use (specifically, cropland), as well as the biophysical context of the study site (the W-Arly-Pendjari transboundary protected area in West Africa), to shape the vulnerability of gallery forests to changes in rainfall in the region. Due to the pathways by which rainfall change and land use interact, vulnerability is especially elevated in core protected areas, warranting particular attention from conservation managers. Overall, our work illustrates how unexpected patterns in potential negative consequences can arise through interactions between pressures on biodiversity, highlighting the importance of considering mechanistic pathways for predicting biodiversity outcomes under multifaceted global environmental change.

{"title":"Land use configuration shapes climate change vulnerability of gallery forests in a savannah ecosystem","authors":"Henrike Schulte to Bühne , Joseph A. Tobias , Sarah M. Durant , Nathalie Pettorelli","doi":"10.1016/j.gecco.2025.e03533","DOIUrl":"10.1016/j.gecco.2025.e03533","url":null,"abstract":"<div><div>Interactions between anthropogenic pressures make it difficult to predict biodiversity change and plan conservation interventions. Climate change is expected to drive widespread ecological change in the tropics over the coming decades, but it is unclear where and when these changes are going to intensify, or reduce, the impacts of additional pressures from human land use. To address this uncertainty, we apply a novel vulnerability assessment framework to show how land use configuration modifies the extent of potential harms arising from climate change to gallery forests, an important vegetation type in tropical savannahs. We highlight how the spatial distribution of climate change (specifically, change in annual rainfall) interacts with the spatial distribution of land use (specifically, cropland), as well as the biophysical context of the study site (the W-Arly-Pendjari transboundary protected area in West Africa), to shape the vulnerability of gallery forests to changes in rainfall in the region. Due to the pathways by which rainfall change and land use interact, vulnerability is especially elevated in core protected areas, warranting particular attention from conservation managers. Overall, our work illustrates how unexpected patterns in potential negative consequences can arise through interactions between pressures on biodiversity, highlighting the importance of considering mechanistic pathways for predicting biodiversity outcomes under multifaceted global environmental change.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"59 ","pages":"Article e03533"},"PeriodicalIF":3.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Over the limit: Consequences of gray squirrel personality on the shifting range limits of oak and hickory species

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-12 DOI: 10.1016/j.gecco.2025.e03539

Margaret R. Merz , Francesca Colombini , Alessio Mortelliti

Many trees must shift their ranges to track changing climate conditions, but their movement often depends on animal dispersers, which are overlooked in range shift predictions. We addressed this knowledge gap by assessing the dispersal of novel (i.e., not previously encountered) seeds by gray squirrels (Sciurus carolinensis) and analyzing intraspecific variation in dispersal decisions. We established a field experiment spanning the northern range limits of multiple oak (Quercus) and hickory (Carya) species in Northeastern USA and measured personality of 222 squirrels, further recording seed decisions by 50 individuals. Squirrels dispersed novel seeds, illustrating their critical role in tree range shifts, with sociality and weight mediating decisions. Seed novelty mediated certain decisions such as the consumption of removed seeds, while other decisions were consistent regardless of novelty. Overall, individuals contributed to novel seed dispersal differently based on personality, highlighting the need to preserve behavioral diversity to facilitate tree range shifts.

{"title":"Over the limit: Consequences of gray squirrel personality on the shifting range limits of oak and hickory species","authors":"Margaret R. Merz , Francesca Colombini , Alessio Mortelliti","doi":"10.1016/j.gecco.2025.e03539","DOIUrl":"10.1016/j.gecco.2025.e03539","url":null,"abstract":"<div><div>Many trees must shift their ranges to track changing climate conditions, but their movement often depends on animal dispersers, which are overlooked in range shift predictions. We addressed this knowledge gap by assessing the dispersal of novel (i.e., not previously encountered) seeds by gray squirrels (<em>Sciurus carolinensis</em>) and analyzing intraspecific variation in dispersal decisions. We established a field experiment spanning the northern range limits of multiple oak (<em>Quercus</em>) and hickory (<em>Carya</em>) species in Northeastern USA and measured personality of 222 squirrels, further recording seed decisions by 50 individuals. Squirrels dispersed novel seeds, illustrating their critical role in tree range shifts, with sociality and weight mediating decisions. Seed novelty mediated certain decisions such as the consumption of removed seeds, while other decisions were consistent regardless of novelty. Overall, individuals contributed to novel seed dispersal differently based on personality, highlighting the need to preserve behavioral diversity to facilitate tree range shifts.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"59 ","pages":"Article e03539"},"PeriodicalIF":3.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

No country for small cats: Systematic analysis of media-reported incidents unravel a troubled scenario for the fishing cat Prionailurus viverrinus in Bangladesh

IF 3.5 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Global Ecology and Conservation

Pub Date : 2025-03-12 DOI: 10.1016/j.gecco.2025.e03505

Muntasir Akash , Tania Zakir , Tahsina Saniat , Arjun Dheer , Arjun Srivathsa

Several recent commentaries by conservationists underscore the inadequacy of scholarly investigations on the ecology and conservation of non-apex carnivores. This bias spells multi-arrayed challenges for carnivores living in anthropized landscapes. The globally Vulnerable fishing cats (Prionailurus viverrinus) living across human-dominated South Asian wetlands exemplify this problem. Bangladesh, a densely populated, tenuous place for human-wildlife coexistence, constitutes ∼ 30 % of the fishing cat’s known distribution range. Based on systematic surveys of media reports (n = 361; 2005–2021), we implemented a novel application of predictive modeling to map fishing cat presence, and hotspots of human–fishing cat negative interactions across Bangladesh. The distribution of fishing cats was best explained by the extent of wetlands and dry-season precipitation. Negative interactions were associated with patchy mosaics of wetlands, croplands, and road networks. Around 47 % of the reported negative interactions were triggered by mere sightings of the cat and 26 % involved transactional costs. Chase-and-capture of the ‘problem’ animal ensued in > 50 % of reported cases; 26 % mentioned the use of traps or other gears. From 31 % of reports, we recorded 160 fishing cat mortality incidents, but no human fatalities. Our results show that around one-third of Bangladesh likely has breeding fishing cat populations; > 95 % of these regions are outside Protected Areas. We recommend formulating an action plan to strategize a redressal policy, enhance public perception of coexistence, and increase conservation units. We suggest applying this case study to other fishing cat range countries, or other carnivores in the Global South, where data deficiency and lack of systematic large-scale assessments often hinder conservation interventions.

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引用次数: 0