Journal for Nature Conservation最新文献_第9页

Illegal trade in wild vertebrates in Mexico over a period of twenty years 20年来墨西哥野生脊椎动物的非法贸易

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-26 DOI: 10.1016/j.jnc.2025.127143

Martha Anahí Güizado-Rodríguez , Osvaldo Eric Ramírez Bravo , Inés Arroyo-Quiroz

Illegal wildlife trade can have negative effects on biodiversity on both local and global scales. This study aimed to analyze the law enforcement efforts by Mexican environmental authorities regarding wildlife trade in México between 2000 and 2020. The study shows that 473 different species were confiscated during that period. The most confiscated taxonomic group was birds (200 species, 42.28%), followed by reptiles (146 species, 30.86%), mammals (110 species, 23.25%) and amphibians (17 species, 3.59%), Iguana iguana, Ctenosaura pectinata, Gopherus agassizii, Trachemys scripta, Crocodylus moreletii, Eupsittula canicularis, Cardinalis cardinalis and Odocoileus virginianus the most frequently confiscated species. Of the total confiscated species, 358 were native species (52 species were endemic), and 115 were non-native species. As for the conservation status of confiscated species, 453 species (95.97%) were listed in the IUCN Red List; 189 species (40.02%) in the National Red List NOM-059-SEMARNAT 2010, and 187 species (39.61%) contemplated by the CITES Appendices. This study illustrates the great diverse of species that are illegally or irregularly traded in Mexico.

非法野生动物贸易可能对地方和全球范围内的生物多样性产生负面影响。本研究旨在分析墨西哥环境当局在2000年至2020年期间在墨西哥的野生动物贸易方面的执法努力。研究表明，在此期间，473种不同的物种被没收。鸟类（200种，占42.28%）、爬行动物（146种，占30.86%）、哺乳动物（110种，占23.25%）和两栖动物（17种，占3.59%）是被查获最多的类群，其中鬣蜥、美洲栉龙、agassizii、scripta、Crocodylus moreletii、Eupsittula canicularis、Cardinalis Cardinalis和Odocoileus virginianus是被查获最多的类群。在被没收的物种中，本地物种358种（特有种52种），非本地物种115种。在被查获物种保护状况方面，453种（95.97%）被列入IUCN红色名录；2010年国家红色名录（no -059- semarnat）中有189种（40.02%），CITES附录中有187种（39.61%）。这项研究说明了在墨西哥非法或非法交易的物种的多样性。

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引用次数: 0

Toward the wetlands geo-tourism development: A strategic planning for rural people’s economic benefit 论湿地地质旅游开发：农村人民经济利益的战略规划

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-26 DOI: 10.1016/j.jnc.2025.127148

Hossein Izadi, Shahla Choobchian, Masoud Bijani, Yadgar Momenpour

The research focused on strategic planning to enhance economic benefits for local communities and promote geo-tourism development in the rural areas surrounding the Zeribar Wetland in Kurdistan Province, western Iran. The strategic planning process involved forming a Delphi panel consisting of stakeholders and key players in the region’s geo-tourism sector. Respondents were tasked with conducting a thorough analysis of the current situation, identifying appropriate strategies, proposing practical solutions, and establishing a monitoring process. A SWOT (Strengths, Weaknesses, Opportunities, and Threats) analysis and a TOWS (Threats, Opportunities, Weaknesses, Strengths) matrix were employed to guide this planning process. The findings revealed that 7 strengths and 10 weaknesses (internal factors), along with 9 opportunities and 6 threats (external factors), influence the benefits that local communities can derive from geo-tourism development around the Zeribar Wetland. Among the strategic options, the WO (Weakness-Opportunity) strategies, which had the highest relative weight, were identified as the most effective in maximizing economic gains for local communities. The economic well-being of rural residents stands as one of the key advantages of Zeribar Wetland’s geo-tourism potential. To fully realize this potential, policy, action, and planning reforms are necessary to foster environmental, social, and economic sustainability. Geo-tourism can serve as a foundational approach to addressing the weaknesses in rural areas with untapped potential.

本研究的重点是伊朗西部库尔德斯坦省Zeribar湿地周边农村地区的战略规划，以提高当地社区的经济效益，促进地质旅游的发展。战略规划过程包括组建一个德尔菲小组，由该地区地质旅游部门的利益相关者和主要参与者组成。答复者的任务是对当前形势进行彻底分析，确定适当的战略，提出切实可行的解决办法，并建立监测进程。SWOT（优势、劣势、机会和威胁）分析和TOWS（威胁、机会、劣势、优势）矩阵被用来指导这个规划过程。研究结果表明，7个优势和10个劣势（内部因素）以及9个机会和6个威胁（外部因素）影响着当地社区从Zeribar湿地周围的地质旅游开发中获得的利益。在战略选择中，相对权重最高的WO（弱点-机会）战略被认为是在最大化当地社区经济收益方面最有效的策略。农村居民的经济福祉是Zeribar湿地地质旅游潜力的关键优势之一。为了充分发挥这一潜力，必须进行政策、行动和规划改革，以促进环境、社会和经济的可持续性。地质旅游可以作为解决潜力尚未开发的农村地区的弱点的基本办法。

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引用次数: 0

Tropical forest loss reversed and birds sheltered at a potential Important Bird Area 热带森林的消失得到扭转，鸟类在一个潜在的重要鸟类保护区得到庇护

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-26 DOI: 10.1016/j.jnc.2025.127147

Eugenia M. Sentíes-Aguilar , Sergio A. Cabrera-Cruz , Juan A. Cervantes-Pasqualli , Rafael Villegas-Patraca

The effectiveness of private reserves in Mexico for contributing towards conservation is unknown. Jaguaroundi Ecological Park (JEP), created in 2002, is the first private reserve in the country. JEP protects tropical rain forests, but it is surrounded by petrochemical developments. Moreover, between 2001 and 2018, deforestation of Tropical Humid Forests was the highest among all ecoregions in Mexico. We compared past and present land cover estimates to evaluate the effectiveness of JEP at preventing forest loss. We also combined avian surveys at JEP with species occurrence records from digital platforms to reassess its bird species richness, which was last reviewed >10 years ago. Additionally, we used generalized linear models to evaluate the effect of nearby petrochemical gas flares on the distribution of bird species richness within JEP. We found that forested vegetation in JEP increased 25.7% between 1999 –2003 and 2014–2017, while it decreased 18.5% outside its borders. We documented 282 bird species, adding 57 species to previous richness estimates, making JEP richer than 75% of the currently designated Important Bird Areas (IBAs) in Mexico. We also found that bird species richness increased with distance to gas flares, underlining the role of JEP as refuge from external anthropogenic pressures. Our results show the potential value of private protected areas for the conservation of nature in Mexico and demonstrate that JEP is a valuable area for birds. To further aid in the protection of both its vegetation and avifauna, we consider that JEP should be officially designated as an IBA. A Spanish translation of the full manuscript is available in the Supplementary Materials.

墨西哥的私人保护区对保护作出贡献的有效性尚不清楚。捷豹环地生态公园（JEP）创建于2002年，是该国第一个私人保护区。JEP保护热带雨林，但它被石化开发所包围。此外，在2001年至2018年期间，热带湿润森林的砍伐是墨西哥所有生态区中最高的。我们比较了过去和现在的土地覆盖估算，以评估JEP在防止森林损失方面的有效性。我们还将JEP的鸟类调查与数字平台上的物种发生记录结合起来，重新评估了JEP的鸟类物种丰富度，上一次回顾是在10年前。此外，我们还利用广义线性模型评价了附近石油化工气体燃烧对JEP内鸟类物种丰富度分布的影响。研究发现，1999 -2003年和2014-2017年，JEP的森林植被增加了25.7%，而边界外的森林植被减少了18.5%。我们记录了282种鸟类，在之前丰富度估计的基础上增加了57种，使JEP比墨西哥目前指定的重要鸟类区（）丰富75%。鸟类物种丰富度随着距离气体耀斑的距离增加而增加，这表明JEP在躲避外部人为压力方面发挥了重要作用。我们的研究结果显示了墨西哥私人保护区对自然保护的潜在价值，并证明了JEP是一个有价值的鸟类保护区。为了进一步帮助保护其植被和鸟类，我们认为应该正式将JEP指定为国际保护区。完整手稿的西班牙语翻译可在补充材料中找到。

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引用次数: 0

Connectedness to nature as a mediator in farmers’ water conservation behavior: Evidence from Iran 与自然的联系是农民节水行为的中介：来自伊朗的证据

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-24 DOI: 10.1016/j.jnc.2025.127144

Maryam Mohammadi , Masoud Bijani , Amir Naeimi , Naser Valizadeh , Annalisa Setti

Iran’s agricultural water crisis necessitates examining psychological drivers of water conservation behavior (WCB). This study analyzes the mediating role of connectedness to nature (CTN) among farmers in Kurdistan Province in western Iran. The study was conducted using a descriptive-correlational method and a causal analysis using a survey and stratified random sampling method with proportional imputation (n = 340). Data were collected using a researcher-made questionnaire (Cronbach’s α > 0.70) and analyzed using structural equation modeling (PLS-SEM). Independent variables included empathy with nature, environmental concerns, mindfulness, environmental identity, place attachment, and social norms. CTN had a direct positive effect on WCB (β = 0.215, p < 0.01). Empathy with nature (β = 0.316) and environmental concerns (β = 0.208) were the strongest predictors of CTN. The indirect effect of empathy on WCB via CTN was significant (β = 0.068). Place attachment influenced CTN but showed no direct relationship with WCB. Social norms and environmental identity also indirectly affected WCB through CTN (β = 0.027 and β = 0.033, respectively). The model explained 56.2 % of CTN variance (R² = 0.562). Enhancing CTN through empathy-building programs and environmental education is a viable strategy to promote sustainable water conservation in agriculture. Policymakers should integrate psychological factors into water governance frameworks.

伊朗的农业用水危机需要研究节水行为（WCB）的心理驱动力。本研究分析了伊朗西部库尔德斯坦省农民与自然的连通性（CTN）的中介作用。本研究采用描述性相关法和因果分析，采用调查和分层随机抽样的方法，并采用比例插值（n = 340）。采用问卷调查（Cronbach 's α > 0.70）收集数据，采用结构方程模型（PLS-SEM）进行分析。自变量包括对自然的同理心、对环境的关注、正念、环境认同、地方依恋和社会规范。CTN对WCB有直接正向影响（β = 0.215, p < 0.01）。对自然的同理心（β = 0.316）和对环境的关注（β = 0.208）是CTN的最强预测因子。共情通过CTN间接影响WCB （β = 0.068）。位置依恋影响CTN，但与WCB无直接关系。社会规范和环境认同也通过CTN间接影响WCB （β = 0.027和β = 0.033）。该模型解释了56.2%的CTN方差（R2 = 0.562）。通过移情建设项目和环境教育来加强CTN是促进农业可持续节水的可行策略。决策者应将心理因素纳入水资源治理框架。

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引用次数: 0

Impacts of land use land cover changes on wetland ecosystem services in Dandi Lake, Oromia, Ethiopia: An analysis using Google Earth Engine and machine learning 埃塞俄比亚奥罗米亚丹迪湖土地利用、土地覆被变化对湿地生态系统服务的影响——基于谷歌Earth Engine和机器学习的分析

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-24 DOI: 10.1016/j.jnc.2025.127146

Moibon Gabisa , Firdissa Sadeta Tiye , Siraj Mammo

This research investigates the effects of land use and land cover (LULC) changes on the ecosystem services of wetlands surrounding Dandi Lake in Oromia, Ethiopia, over 30 years from 1995 to 2025. The study utilizes remote sensing (RS), geographic information systems (GIS), and cloud-based processing through Google Earth Engine (GEE). Landsat satellite images and machine learning techniques, particularly the Random Forest (RF) algorithm, were employed to classify LULC. Historical LULC trends were examined using RF within the GEE platform. To identify the underlying drivers of these changes, a comprehensive approach was adopted, incorporating field observations, focus group discussions, and interviews with local stakeholders. A modified benefit transfer method was applied to assess changes in ecosystem service values (ESVs) resulting from LULC shifts. The findings of the study indicated that population growth, urban expansion, agricultural development, and infrastructure projects are the primary drivers of LULC changes in the Dandi Lake area. Agricultural land has significantly increased, leading to a rise in cropland ESVs from $21.6 million to $24.4 million. However, this growth came at the expense of forests and wetlands, whose ESVs declined markedly from $58.9 million to $23.8 million for forests. Overall, the region experienced a 34 % reduction in total ESVs, decreasing from $123.3 million to $ 81.9 million. These results highlight significant biodiversity losses and reduced ecosystem functionality, underscoring the urgent need for sustainable land use strategies that balance economic development with ecological preservation to maintain environmental integrity and community well-being.

研究了1995 ~ 2025年30年间埃塞俄比亚奥罗米亚丹迪湖周边湿地土地利用和土地覆盖变化对生态系统服务的影响。该研究利用遥感（RS）、地理信息系统（GIS）和基于云的谷歌地球引擎（GEE）处理。Landsat卫星图像和机器学习技术，特别是随机森林（RF）算法，被用于对LULC进行分类。在GEE平台中使用RF检查历史LULC趋势。为了确定这些变化的潜在驱动因素，采用了一种综合方法，包括实地观察、焦点小组讨论和与当地利益相关者的访谈。采用改进的效益转移方法对生态系统服务价值（esv）的变化进行了评价。研究结果表明，人口增长、城市扩张、农业发展和基础设施建设是影响丹地湖区土地利用价值变化的主要因素。农业用地大幅增加，导致农田esv从2160万美元增加到2440万美元。然而，这一增长是以牺牲森林和湿地为代价的，森林的esv从5890万美元显著下降到2380万美元。总体而言，该地区的esv总额减少了34%，从1.233亿美元降至8190万美元。这些结果突出了生物多样性的严重丧失和生态系统功能的降低，强调了迫切需要可持续的土地利用战略，以平衡经济发展与生态保护，以保持环境完整性和社区福祉。

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引用次数: 0

Nexus among gully formation factors, gully development, and community perception in Lake Hawassa Watershed, Ethiopia 埃塞俄比亚哈瓦萨湖流域沟谷形成因素、沟谷发展与社区认知的关系

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-22 DOI: 10.1016/j.jnc.2025.127141

Ayele Getachew Tasew , Mulugeta Dadi Belete , Tewodros Assefa Nigussie , Tesfalem Abraham

Gullies are series problem globally and accounts for up to 95 % of the sediment eroded from watersheds. Lake Hawassa Watershed (LHW) has been significantly suffering from gully erosion. Despite large number of studies related to gully erosion, the nexus between gully development, formation factors and community perception remains largely unexplored at regional scale. To address this issue, a study was conducted using the Assessment of Gully Erosion Rates through Interviews and Measurements (AGERTIM) method with Geomatica software, Google Earth Pro 10.7.6, ArcMap 10.7.1, and Landsat satellite imagery from Landsat 1.5 to 8. A descriptive and quantitative analysis system was used to conduct the Nexus analysis in terms of proportional and annual rate of change. The gully development timeframe is estimated at 50 years. The results show that an increase in rainfall by 10.12 % leads to an increase in the cultivated area, lineament line density, and top gully width by 20.2 %, 16 %, and 2.24 %, respectively within eight years. Thus, the community faces crop and agricultural land loss due to gully erosion, as 63 % of respondents confirmed. The results also demonstrate a strong nexus between formation factors and gully development, resulting in a long-term erosion rate of 4.01 tons/ha/year and a loss of 142,175.74 m³ of volume within the gully area. It can be concluded from the results that, integrating models with community perceptions plays a key role in investigating the nexus between human-nature interactions and their effects on gully formation and development studies. This research demonstrates the importance of integrating local community perceptions with models to reveal connections in practical decision-making processes and rehabilitation intervention practices for gullies and watersheds.

沟壑是全球性的一系列问题，占流域侵蚀泥沙的95%。哈瓦萨湖流域（LHW）一直受到沟壑侵蚀的严重影响。尽管有大量关于沟壑侵蚀的研究，但在区域尺度上，沟壑发育、形成因素和群落感知之间的关系仍未得到充分探讨。为了解决这一问题，利用Geomatica软件、b谷歌Earth Pro 10.7.6、ArcMap 10.7.1和Landsat 1.5至8的Landsat卫星图像，通过访谈和测量评估沟壑侵蚀率（AGERTIM）方法进行了研究。采用描述性定量分析系统，对比例变化率和年变化率进行Nexus分析。溪谷的开发时间估计为50年。结果表明：8年内，降雨量每增加10.12%，耕地面积、线密度和顶沟宽度分别增加20.2%、16%和2.24%；因此，63%的受访者确认，该社区面临着因沟壑侵蚀而造成的作物和农业用地损失。结果还表明，形成因素与沟壑区发育之间存在密切联系，导致长期侵蚀速率为4.01吨/公顷/年，沟壑区损失了142,175.74 m3的体积。研究结果表明，将模型与社区感知相结合，在研究人与自然相互作用之间的关系及其对沟壑形成和发展的影响方面发挥了关键作用。本研究证明了将当地社区的认知与模型相结合的重要性，以揭示沟渠和流域的实际决策过程和修复干预实践中的联系。

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引用次数: 0

Human impacts outweigh environmental factors in shaping site use dynamics by terrestrial mammals and birds in restricted protected areas of the Atlantic forest 在大西洋森林受限保护区内，人类对陆地哺乳动物和鸟类使用场地动态的影响超过了环境因素

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-21 DOI: 10.1016/j.jnc.2025.127142

Roberta M. Paolino , Nielson Pasqualotto , Mariana B. Landis , Jeffrey A. Royle , Angela K. Fuller , Katia M. P. M. de B. Ferraz , Adriano G. Chiarello

The spatial distribution of species is intricately linked to population dynamics, which influence species site use patterns over time. Environmental factors contribute to these dynamics, which can also be significantly affected by human impacts. Understanding the effects of environmental and human-impact variables on site use dynamics can inform effective conservation strategies. Here, we aimed to assess the relative importance of human-impacts variables (land use types, roads, human settlements) compared to environmental variables (elevation, native forest succession type, distance to water bodies) and their impact on site use dynamics of 15 medium and large-sized terrestrial mammals and four medium and large-sized terrestrial birds in total. We collected data over two years using camera-traps in two state parks of the Atlantic Forest, Brazil, under different degrees of human pressure. We modeled species detection and non-detection data using multi-season occupancy modelling and estimated site use dynamics. Human-impact variables played a greater role in extirpation than environmental variables. Moreover, in the park experiencing a higher degree of human pressures, human-impact variables exerted a greater influence on initial site use and colonization compared to environmental variables. Pastures decreased site use and colonization and increased extirpation, while primary and secondary forests increased site use and colonization of large frugivores. High traffic paved roads decreased site use and colonization and increased extirpation. Human impacts affect dynamics of site use even within restricted protected areas. Therefore, strategies that consider the surrounding landscape and involve collaboration with neighboring communities may improve conservation effectiveness.

物种的空间分布与种群动态有着错综复杂的联系，种群动态影响着物种对地点的长期利用模式。环境因素促成了这些动态，而这些动态也会受到人类影响的显著影响。了解环境和人类影响变量对场地使用动态的影响可以为有效的保护策略提供信息。在此，我们旨在评估人类影响变量（土地利用类型、道路、人类住区）与环境变量（海拔、原始森林演替类型、到水体的距离）的相对重要性，以及它们对15种大中型陆生哺乳动物和4种大中型陆生鸟类的场地利用动态的影响。我们在巴西大西洋森林的两个州立公园，在不同程度的人类压力下，用相机陷阱收集了两年多的数据。我们使用多季节占用模型和估算场地使用动态来模拟物种检测和非检测数据。与环境变量相比，人类影响变量在灭绝中发挥了更大的作用。此外，在人类压力程度较高的公园中，与环境变量相比，人类影响变量对初始场地使用和殖民化的影响更大。牧场减少了立地利用和定植，增加了灭绝，而原生林和次生林增加了大型食果动物的立地利用和定植。高流量的铺砌道路减少了场地的使用和殖民化，增加了灭绝。即使在受限制的保护区内，人类的影响也会影响场地使用的动态。因此，考虑周围景观并与邻近社区合作的策略可能会提高保护效果。

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引用次数: 0

Ecological security pattern and simulation prediction based on circuit theory: a case study of the Nansi Lake Basin in China 基于循环理论的生态安全格局及模拟预测——以南四湖流域为例

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-20 DOI: 10.1016/j.jnc.2025.127137

Yingchun Liu , Yande Jing , Shiping Zhao , Pinzheng Lu , Shanmei Han

Regional ecological stability is threatened by the rapid land use/cover transition and the acceleration of industrialization. Establishing an ecological security pattern from a dynamic perspective can improve ecosystem service functions and maintain regional ecological stability. Our study focused on the Nansi Lake Basin, devised a comprehensive evaluation framework based on habitat importance, ecosystem function, and landscape connectivity to identify ecological source areas; constructed an ecological resistance surface based on the least cumulative resistance model and adopted the circuit theory to identify ecological corridors; constructed a gray multi-objective optimization-patch generation land use/cover simulation coupled model to optimize the land-use structure in 2035 under three different scenarios, and introduced the key nodes to optimize the ecological security pattern, delineated the regulating subareas, and put forward the planning proposal. The findings revealed that: (1) The urbanization process in the study area, at the cost of sharp reduction in ecological land, was still accelerating; (2) The three scenarios showed different shifting trends in land use/cover, with ecological protection scenario showing a proportion of ecological land had significantly increased, which was expected to better align with policy planning; (3) Ecological source areas and ecological corridors were influenced by the distribution of land use/cover types and were densely distributed in the eastern part of the study area. The findings could serve as corresponding references for establishment of similar regional ecological security patterns and the protection of regional ecological stability.

土地利用/覆被的快速转型和工业化进程的加速威胁着区域生态稳定。从动态角度构建生态安全格局，可以提高生态系统服务功能，维护区域生态稳定。以南四湖流域为研究对象，设计了基于生境重要性、生态系统功能和景观连通性的生态源区综合评价框架；基于最小累积阻力模型构建生态阻力面，并采用回路理论识别生态廊道；构建了三种不同情景下2035年土地利用结构优化的灰色多目标优化-斑块生成土地利用/覆被模拟耦合模型，引入了优化生态安全格局的关键节点，划定了调控分区，提出了规划建议。结果表明：①研究区城市化进程仍在加速，但代价是生态用地急剧减少；②3种情景的土地利用/覆被变化趋势不同，其中生态保护情景的生态用地比例显著增加，与政策规划更加吻合；(3)生态源区和生态廊道受土地利用/覆被类型分布的影响，集中分布在研究区东部。研究结果可为建立类似的区域生态安全格局和保护区域生态稳定提供参考。

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引用次数: 0

Coexistence conservation strategies: Testing conditioned food aversion to protect the endangered Western capercaillie 共存保护策略：测试条件厌恶食物以保护濒临灭绝的西方小龙虾

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-19 DOI: 10.1016/j.jnc.2025.127140

Jorge Tobajas , Job Roig , Ivan Afonso-Jordana

Bird species, especially ground-nesting species, are experiencing sharp population declines. Nest predation is one of the main factors limiting the reproductive success of the capercaillie (Tetrao urogallus) in declining populations. This study represents the first trial assessing the use of Conditioned Food Aversion (CFA) as a non-lethal tool to reduce capercaillie nest predation, particularly by red foxes (Vulpes vulpes), within the framework of coexistence conservation strategies. The fungicide Thiram was used as an aversive compound in artificial eggs, and predation rates were compared between a treatment and a control area before and after conditioning (BACI design). In the treatment area, CFA produced a slight reduction in overall nest predation, whereas in the control area a marked increase was observed. At the species level, red fox predation in the treatment area was reduced by a factor of 2.35 compared to controls, demonstrating a significant effect of CFA. No significant effect was observed on predation by martens (Martes martes), suggesting lower conditioning effectiveness in mustelids. Furthermore, the presence of unconditioned juveniles and a slight delay in the post-conditioning phase may have influenced the results. Additionally, nest predation by wild boar (Sus scrofa) and brown bear (Ursus arctos) was detected at low to moderate levels. The study highlights the potential of behavior-based methodologies within coexistence conservation strategies, such as CFA, as viable alternative to lethal control. These tools are not only more socially and ethically accepted but also promote more effective and sustainable conservation of threatened species.

鸟类，尤其是地面筑巢的鸟类，正经历着数量的急剧下降。在种群数量下降的情况下，巢捕食是限制虎斑蝶繁殖成功的主要因素之一。本研究首次评估了在共存保护策略框架内，使用条件食物厌恶（CFA）作为一种非致命工具来减少capercaillie巢穴捕食，特别是红狐（Vulpes Vulpes）。用杀菌剂Thiram作为厌恶性化合物处理人工卵，比较处理区和对照区调节前后的捕食率（BACI设计）。在处理区，CFA略微减少了总体的巢捕食，而在对照区，观察到明显增加。在物种水平上，与对照组相比，处理区红狐的捕食量减少了2.35倍，表明CFA的效果显著。未观察到对鼬鼠捕食的显著影响，表明对鼬鼠的调节效果较低。此外，非条件幼体的存在和后条件阶段的轻微延迟可能影响了结果。此外，野猪（Sus scrofa）和棕熊（Ursus arctos）的巢穴捕食也处于中低水平。该研究强调了基于行为的方法在共存保护策略中的潜力，例如CFA，作为致命控制的可行替代方案。这些工具不仅在社会和道德上更被接受，而且还促进了对受威胁物种的更有效和可持续的保护。

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引用次数: 0

Allometric models for estimating biomass of an endangered tropical tree: An approach for young plants in a wide range of light availability 估算一种濒危热带树木生物量的异速生长模型：一种适用于光照条件下幼树的方法

IF 2.5 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Journal for Nature Conservation

Pub Date : 2025-10-19 DOI: 10.1016/j.jnc.2025.127139

Catriane Sousa-Santos , Amanda Freitas Cerqueira , Ana Cristina Schilling , Ândrea Carla Dalmolin , Geane Santos da Costa , Marúcia da Cunha Fagundes , Marcelo Schramm Mielke

Cariniana legalis Mart. O. Kuntze (Lecythidaceae) is an emergent and endangered rainforest tropical tree and efforts should be made to reintroduce them into the understory of secondary succession forests. We conducted a study aiming to develop allometric models for predictions of roots, leaves, stems and total biomass for young C. legalis plants growing in a wide range of mean daily light integral (DLI), the total daily photosynthetic photon flux density (PPFD). Based on three independent experiments (total N = 206) with a wide range of mean DLI (1 to 43 mol photons m⁻² day⁻¹) we tested two allometric models for prediction of plant biomass from stem diameter measurements. We obtained robust equations for predictions of stem and total plant biomass using a linearized form of a power function. Uncertainties in the predictions of leaves and roots biomass can be explained by the changes in carbon allocation in contrasting light availabilities. The total biomass of young C. legalis plants, with a diameter ranging between 1.6 and 16.5 mm, can be predicted with the equation ln(y) = -1.64636 + 2.25243ln(x), R² = 0.97. If the plants grow in contrasting light availabilities specific strategies are needed to develop allometric models for predictions of the biomass of roots and leaves.

大鲵。黄菖蒲是一种新兴的濒危雨林热带乔木，应努力将其重新引入次生林演替林下。本研究旨在建立在大范围平均日光积分（DLI）、总日光合光子通量密度（PPFD）条件下生长的豆豆幼苗根、叶、茎和总生物量的异速生长模型。基于三个独立的实验（总N = 206），在较宽的平均DLI范围内（1至43 mol光子m−2 day−1），我们测试了两种异速生长模型，用于通过茎直径测量预测植物生物量。我们使用幂函数的线性化形式获得了预测茎和总植物生物量的稳健方程。叶片和根系生物量预测的不确定性可以通过对比光有效性中碳分配的变化来解释。直径在1.6 ~ 16.5 mm范围内的豆豆幼树总生物量可通过ln(y) = -1.64636 + 2.25243ln(x), R2 = 0.97进行预测。如果植物生长在不同的光照条件下，则需要开发异速生长模型来预测根和叶的生物量。

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引用次数: 0