Journal for Nature Conservation最新文献_第2页

Manor parks as refuges for cavity-nesting birds: Can rural legacy support forest biodiversity in a highly deforested agricultural landscape? 庄园公园作为洞穴筑巢鸟类的避难所：在森林被高度砍伐的农业景观中，农村遗产能否支持森林生物多样性？

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

Journal for Nature Conservation

Pub Date : 2026-01-16 DOI: 10.1016/j.jnc.2026.127220

Jerzy Michalczuk, Monika Michalczuk

Historic manor parks are a traditional component of Central European rural landscapes, representing a form of cultural heritage established primarily in the 18th and 19th centuries. These sites often contain old-growth tree stands that resemble forest habitats, which are increasingly rare in deforested agricultural regions. As such, they can act as biodiversity refuges, particularly for forest-dwelling birds. In this study, we assessed the role of manor parks as nesting habitats for cavity-nesting birds in southeastern Poland. We compared the occupancy of 37 manor parks and 34 non-manor rural parks by woodpeckers and secondary cavity nesters, and analysed the influence of habitat features such as tree health and trunk dimensions, as well as park area and location. Our results show that cavity nesting birds occupied manor parks significantly more often (97%) than non-manor parks (62%). Large tree stands (>2 ha) and the presence of old trees in poor health condition positively affected species richness. These findings demonstrate that the protection of old-growth trees in cultural landscapes enhances conservation outcomes. Historic parks integrate cultural and ecological values and support the persistence of forest specialists in otherwise inhospitable rural environments. As multifunctional green spaces, they offer potential for ecological connectivity and complement protected area networks. We argue that land use policy and spatial planning should explicitly recognise historic tree stands as valuable biodiversity assets. The protection of such elements of rural heritage can support conservation objectives and promote more resilient and multifunctional landscapes.

历史庄园公园是中欧乡村景观的传统组成部分，代表了一种主要建立于18世纪和19世纪的文化遗产形式。这些地点通常包含类似森林栖息地的古老树木，这在森林砍伐的农业地区越来越罕见。因此，它们可以作为生物多样性的避难所，特别是对于森林栖息的鸟类。在这项研究中，我们评估了庄园公园作为波兰东南部洞巢鸟类筑巢栖息地的作用。以37个庄园公园和34个非庄园公园为研究对象，比较了啄木鸟和次生洞巢鸟的占用情况，分析了树木健康、树干尺寸、公园面积和位置等生境特征对啄木鸟和次生洞巢鸟的影响。结果表明，洞巢鸟占据庄园公园的频率（97%）明显高于非庄园公园（62%）。大型林分（2公顷）和健康状况较差的老树的存在对物种丰富度产生了积极影响。这些研究结果表明，在文化景观中保护古树可以提高保护效果。历史公园整合了文化和生态价值，并支持森林专家在原本不适宜居住的农村环境中坚持下去。作为多功能绿色空间，它们提供了生态连接的潜力，并补充了保护区网络。我们认为，土地利用政策和空间规划应明确承认历史林分是宝贵的生物多样性资产。保护这些乡村遗产元素可以支持保护目标，促进更具弹性和多功能的景观。

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引用次数: 0

Seasonal and environmental determinants of African elephant (Loxodonta africana) movement in the W-Arly-Pendjari complex W-Arly-Pendjari复合体中非洲象（Loxodonta africana）运动的季节和环境决定因素

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

Journal for Nature Conservation

Pub Date : 2026-01-13 DOI: 10.1016/j.jnc.2026.127225

Hugues A. Akpona , Stanislas Mahussi Gandaho , Charlemagne D.S.J. Gbemavo , Georges Nobime , Barthélémy Kassa , Chabi A.M.S. Djagoun

Seasonal and environmental drivers shape African elephant (Loxodonta africana) movement, influencing home range dynamics, resource use, and mobility patterns. Understanding elephant spatial ecology is vital for conservation planning, particularly in regions affected by increasing insecurity. This study provides the first comprehensive analysis of seasonal home range variation, displacement behaviour, and environmental influences on African elephants in the transboundary W-Arly-Pendjari (WAP) Complex of West Africa. Using GPS telemetry data from 22 elephants (7 males, 15 females) tracked between 2019 and 2024, we applied a-LoCoH methods to estimate utilization distributions across 50% to 95% isopleths and linear regression to assess environmental factors influencing displacement. Male elephants had slightly larger home ranges in the dry season (95% isopleth: 1064 km²) than wet season (988 km²), while females showed the opposite trend (dry: 1066 km², wet: 1098 km²), though seasonal differences were not significant. Across all sex-season combinations, home range overlap was highest among females during the wet season (mean = 190.0 km²) and lowest among males during the dry season (mean = 84.0 km²), reflecting strong female cohesion and male spatial segregation. Males showed significantly greater displacement in the dry season (296 km) than wet season (252 km), while female displacement showed no seasonal variation. Environmental modelling showed that elephant movement increased farther from conflict zones and rivers, and closer to water points. These findings demonstrate that both ecological resources and anthropogenic pressures shape elephant movement patterns in sex-specific ways, informing transboundary conservation strategies in the WAP Complex.

季节和环境因素塑造了非洲象（Loxodonta africana）的运动，影响了栖息地动态、资源利用和移动模式。了解大象的空间生态对于保护规划至关重要，特别是在受不安全因素影响的地区。本研究首次全面分析了西非跨界W-Arly-Pendjari （WAP）群落中非洲象的季节性栖息地变化、迁移行为和环境影响。利用2019年至2024年间追踪的22头大象（7头公象，15头母象）的GPS遥测数据，我们应用a-LoCoH方法估算了50%至95%等平面上的利用分布，并利用线性回归评估了影响位移的环境因素。旱季雄性象的活动范围（95%等线：1064 km2）略大于雨季（988 km2），而雌性象的活动范围则相反（干季：1066 km2，雨季：1098 km2），但季节差异不显著。在所有的性别-季节组合中，丰水季雌性栖息地重叠最多（平均为190.0 km2），旱季雄性栖息地重叠最少（平均为84.0 km2），反映了强烈的雌性凝聚力和雄性空间隔离。雄蚊在旱季的迁移量（296 km）显著大于湿季（252 km），雌蚊的迁移量无季节变化。环境模型显示，远离冲突地区和河流以及靠近水源的地方，大象的活动增加了。这些发现表明，生态资源和人为压力都以性别特异性的方式塑造了大象的运动模式，为WAP Complex的跨界保护策略提供了信息。

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引用次数: 0

Gout as cause of morbidity and mortality of Audouin’s gull (Ichthyaetus audouinii) in southern Portugal 痛风是葡萄牙南部奥杜安海鸥发病和死亡的原因

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

Journal for Nature Conservation

Pub Date : 2026-01-13 DOI: 10.1016/j.jnc.2026.127223

João Almeida , Rute Noiva , Mário Quaresma , Luís Carvalho , María Casero

Audouin’s gull (Ichthyaetus audouinii) is a species endemic to the Mediterranean and Western Sahara, with the world’s largest breeding colony located on Deserta Island, Algarve (Southern Portugal). This study aimed to identify pathological abnormalities and drivers of mortality within this population, with the broader goal of improving our understanding of the terrestrial and marine threats faced by this species in the Algarve .

Data on the admission of 878 Audouin’s gulls at RIAS − Ria Formosa Wild Animal Recovery and Investigation Center, between January 2010 and December 2023, were collected and characterized. Of these, 176 birds were necropsied, and histopathology was carried out on 4 birds.

The results revealed that morbidity/mortality in the colony mainly affects juveniles (87.81% admissions) collected at the Faro/Olhão Wastewater Treatment Station and surrounding areas, manifesting as signs of weakness/malnutrition. Anatomopathological analysis revealed a predominance of renal and joint diseases, consistent with nephritis and urolithiasis, and ankylosis and arthritis, respectively. Histopathological examination showed the deposition of uric acid crystals in renal parenchyma. In 2 of the 4 cases analysed, trematode parasites with pigmented shell eggs were observed within the ureters and free in the coelom and were classified as belonging to the family Renicolidae.

The data suggests gout as an important disease in this population, with both age-related and geographic components. This condition may be associated with debilitation following fledging, as juvenile birds move toward wastewater treatment facilities in search freshwater or food. It may also be related with the presence of a renal trematode parasite, unreported in this population, which may contribute to renal failure.

奥杜安海鸥（Ichthyaetus audouinii）是地中海和西撒哈拉特有的物种，世界上最大的繁殖地位于阿尔加维（葡萄牙南部）的Deserta岛。本研究旨在确定该种群的病理异常和死亡驱动因素，其更广泛的目标是提高我们对阿尔加维该物种面临的陆地和海洋威胁的理解。本文收集了2010年1月至2023年12月在RIAS - Ria Formosa野生动物恢复与调查中心（RIAS - Ria Formosa wildlife Recovery and Investigation Center）收留的878只奥杜安鸥的数据并进行了特征分析。其中尸检176只，对4只进行组织病理学检查。结果显示，在Faro/ olh污水处理站及周边地区收集的种群中，发病率/死亡率主要影响少年（87.81%），表现为身体虚弱/营养不良。解剖病理分析显示肾脏和关节疾病的优势，一致的肾炎和尿石症，强直和关节炎分别。组织病理学检查显示肾实质内尿酸结晶沉积。4例中有2例在输尿管内和体腔内检出带色素壳卵的吸虫，属吸虫科。数据表明痛风是这一人群中的一种重要疾病，与年龄和地理因素有关。这种情况可能与雏鸟羽化后的虚弱有关，因为幼鸟会向污水处理设施移动以寻找淡水或食物。它也可能与肾吸虫寄生虫的存在有关，未在该人群中报道，这可能导致肾功能衰竭。

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引用次数: 0

Seasonal habitat use of the West-Pannonian great bustard (Otis tarda): insights from seven years of conservation practice in Central European agro-steppe habitats 西潘诺尼亚大鸨（Otis tarda）的季节性栖息地利用：来自中欧农业草原栖息地七年保护实践的见解

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

Journal for Nature Conservation

Pub Date : 2026-01-10 DOI: 10.1016/j.jnc.2026.127222

Soňa Svetlíková , Péter Spakovszky , Rainhard Raab , Maximilian Raab , Adam Šupčík , Ján Škrábal , Jochen Steindl , Hannah Böing , Ladislav Naďo , Jozef Ridzoň , Rainer Raab

The great bustard (Otis tarda) is a globally threatened farmland bird with variable population trends across Europe. While many populations are declining, the West-Pannonian population has increased, providing an opportunity to investigate species persistence in intensively cultivated landscapes. We examined seasonal habitat use of this population using Ecological Niche Factor Analysis (ENFA) on a seven-year dataset of systematic observations—the first ENFA application for the West-Pannonian great bustard population. This methodological framework allowed us to identify key ecological factors driving habitat selection, assess interannual consistency, and explore sex-specific differences. Our results indicate that agri-environmental scheme (AES) supported fallows and winter rapeseed are consistently selected and function as critical seasonal resources, whereas other habitat types are used only during certain periods of the season, but remain essential within the agricultural mosaic. Habitat preferences were largely similar between males and females, with minor seasonal differences. By linking habitat selection to measurable land-use features, our study provides a robust, evidence-based framework for guiding conservation management of great bustards. These findings demonstrate how targeted agri-environmental interventions can enhance habitat suitability and persistence of threatened farmland species, offering practical guidance for spatial planning and conservation strategies grounded in empirical habitat-use data.

大鸨（Otis tarda）是一种全球受威胁的农田鸟类，在欧洲各地的种群趋势不一。虽然许多种群数量正在下降，但西潘诺尼亚种群数量却在增加，这为研究集约化栽培景观中的物种持久性提供了机会。本文采用生态位因子分析（ENFA）方法对该种群的季节性生境利用进行了分析，这是首次将生态位因子分析应用于西潘诺尼亚大鸨种群。该方法框架使我们能够确定驱动栖息地选择的关键生态因素，评估年际一致性，并探索性别特异性差异。我们的研究结果表明，农业环境方案（AES）支持的休耕地和冬季油菜籽是持续选择的，并且是关键的季节性资源，而其他栖息地类型仅在季节的特定时期使用，但在农业马赛克中仍然必不可少。雄性和雌性对栖息地的偏好基本相似，季节性差异较小。通过将栖息地选择与可测量的土地利用特征联系起来，我们的研究为指导大鸨的保护管理提供了一个强有力的、基于证据的框架。这些发现表明，有针对性的农业环境干预措施可以增强受威胁农田物种的栖息地适宜性和持久性，为基于经验栖息地利用数据的空间规划和保护策略提供实用指导。

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引用次数: 0

Forest management in a French Natura 2000 conservation site: integrating or keeping environmental standards at a distance? 法国Natura 2000保护区的森林管理：整合或保持环境标准？

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

Journal for Nature Conservation

Pub Date : 2026-01-10 DOI: 10.1016/j.jnc.2025.127203

Elodie Brahic, Philippe Deuffic

While biodiversity issues are increasingly recognised, their implementation can sometimes be contentious, particularly within forest ownership, as seen with the Natura 2000 network. The low uptake of Natura 2000 charters and contracts makes it difficult to ascertain the actions of landowners in these protected forest areas. To investigate the behaviour of forest owners in such areas, we conducted semi-directive interviews and a quantitative survey using a closed-ended questionnaire in the Ciron Valley (Gironde, France), which is renowned for its beech forests relics considered as refugia of the last glacial period. Data analysis combining discourse analysis and statistical methods (variable classification and hierarchical ascending classification) revealed six typical behavioural profiles. Three of these reflect a voluntary pro-environmental commitment that can be attributed to ethical, practical, or economic motivations. These groups view the Natura 2000 area as a laboratory for testing environmental and forestry transition paths. The other three groups do not feel strongly compelled by the Natura 2000 environmental regulations, viewing them primarily as binding obligations. Despite their initial hostility towards the Habitats Directive in the 2000s, a sense of belonging to, and a collective defence of, the site is now emerging. The appropriation of the site reflects real changes in pro-environmental behaviour, as well as the strategic use of its protected status. The focus of the debate has shifted, with discussions now centring on the most appropriate types of environmental action and their relevance within broader contexts, such as climate change mitigation.

虽然生物多样性问题越来越被认识到，但它们的实施有时会引起争议，特别是在森林所有权范围内，正如Natura 2000网络所看到的那样。由于对Natura 2000宪章和合同的接受程度较低，因此很难确定这些森林保护区的土地所有者的行动。为了调查这些地区森林所有者的行为，我们在法国吉伦特市的西隆河谷（Ciron Valley）进行了半指示访谈和封闭式问卷定量调查，该地区以其山毛榉森林遗迹而闻名，被认为是最后一个冰川期的避难所。结合话语分析和统计方法（变量分类和层次上升分类）的数据分析揭示了六种典型的行为特征。其中三个反映了出于道德、实际或经济动机的自愿环保承诺。这些团体将Natura 2000地区视为测试环境和林业转型路径的实验室。其他三个团体并不觉得受到《自然2000》环境法规的强烈强迫，他们主要将其视为具有约束力的义务。尽管他们最初在2000年代对栖息地指令充满敌意，但一种归属感和集体防御意识正在出现。该场地的占用反映了亲环境行为的真正变化，以及对其受保护地位的战略利用。辩论的焦点已经转移，现在的讨论集中在最适当的环境行动类型及其在更广泛背景下的相关性，例如减缓气候变化。

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引用次数: 0

Mapping connectivity through tourism omniscape modeling reveals amphibian corridors in the Yangtze River Delta 通过旅游全景观模型绘制连通性图，揭示长三角两栖动物走廊

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

Journal for Nature Conservation

Pub Date : 2026-01-07 DOI: 10.1016/j.jnc.2026.127221

Yicheng Ren , Jiechen Wang , He Wu , Amaël Borzée , Zhaoning Wu

Tourist attractions, as specialized landscapes, provide recreational value for humans while simultaneously serving as critical habitats for numerous amphibian species. However, the ecological benefits and risks these sites pose to amphibians remain understudied. The Yangtze River Delta urban agglomeration, one of China’s most economically developed and densely populated regions, hosts extensive tourism infrastructure alongside 58 amphibian species. To quantify the modulating effects of attractions on amphibian movement connectivity, we simulated landscape connectivity for three amphibian species by constructing resistance surfaces based on habitat suitability derived from MaxEnt species distribution modeling, employing omnidirectional connectivity modeling for current flow analysis. This framework enabled the identification of connectivity-modulating attractions and species-specific corridors under three dispersal scenarios, alongside analyses of bidirectional “inhibition-enhancement” effects and land cover contributions to corridor composition. Results revealed both amphibian connectivity corridors and tourism attraction clusters exhibit spatial congruence in the southern Yangtze River Delta. This geographic overlap results in over 1,100 connectivity-modulating attractions. Urban attractions and Remote Natural attractions dominated the attraction typology (22% – 27% and 40% – 50% respectively). Connectivity-modulators demonstrate dual roles − inhibitory or facilitatory − contingent on species-attraction interactions. Urban attractions predominantly suppressed connectivity, whereas Remote natural attractions enhanced connectivity across all species. Cropland and forest collectively contributed > 80% to corridor area, followed by impervious surfaces and water. These findings could provide scientific foundations for reconciling tourism development with amphibian conservation in megacity clusters, directly supporting China’s ecological protection red line policy and global biodiversity targets.

旅游景点作为一种特殊的景观，为人类提供了娱乐价值，同时也是众多两栖动物的重要栖息地。然而，这些地点对两栖动物的生态效益和风险仍未得到充分研究。长江三角洲城市群是中国经济最发达、人口最密集的地区之一，拥有广泛的旅游基础设施和58种两栖动物。为了量化景点对两栖动物运动连通性的调节作用，基于MaxEnt物种分布模型得出的栖息地适宜性，构建阻力面，模拟了3种两栖动物的景观连通性，并采用全向连通性模型进行水流分析。该框架能够识别三种分散情景下的连通性调节景点和物种特定走廊，同时分析双向“抑制-增强”效应和土地覆盖对走廊组成的贡献。结果表明：长三角南部两栖动物连通性廊道和旅游景区集群均呈现空间一致性；这种地理上的重叠产生了超过1100个连接调制景点。城市景区和偏远自然景区在景区类型中占主导地位（分别为22% ~ 27%和40% ~ 50%）。连接调节剂表现出双重作用-抑制或促进-取决于物种吸引相互作用。城市景点主要抑制了所有物种的连通性，而偏远的自然景点则增强了所有物种的连通性。农田和森林共占走廊面积的80%，其次是不透水地表和水域。研究结果可为城市群旅游开发与两栖动物保护的协调提供科学依据，直接支持中国生态保护红线政策和全球生物多样性目标。

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引用次数: 0

Nasal hormone administration can support ambystomid salamander ex situ conservation breeding programs 鼻激素管理可以支持ambystomid salamander移地保护育种计划

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

Journal for Nature Conservation

Pub Date : 2026-01-06 DOI: 10.1016/j.jnc.2026.127211

Devin M. Chen , Carrie K. Kouba , Terri L. Roth , Peter J. Allen , Nucharin Songsasen , Andrew J. Kouba

Over half of all species within the order Caudata are threatened and in need of conservation breeding efforts to prevent further population declines. Unfortunately, amphibians under human care can often face breeding difficulties due to challenges associated with mimicking natural environmental cues that initiate hormonal cascades for successful reproduction. Exogenous hormone administration can be an effective approach to overcome such seasonal and behavioral barriers in captivity. This research aimed to evaluate two different gonadotropin releasing hormone (GnRH) administration pathways on sperm quantity and quality in eastern tiger salamanders (Ambystoma tigrinum). Each tiger salamander (n = 14 males/treatment) was randomly rotated through six treatments, which included a Low (0.02 μg/g), Medium (0.1 μg/g), and High (0.5 μg/g) resolving GnRH concentration 24 h after a prime of 0.025 μg/g of GnRH, administered either intramuscularly or nasally. There was no significant difference (p > 0.05) in the number of spermic responders among treatments. The Medium nasal treatment resulted in the highest sperm concentration (5.2 ± 2.4 × 10⁶ sperm/mL) and was not different (p > 0.05) from the Medium (1.7 ± 0.5 × 10⁶ sperm/mL) or High (3.5 ± 1.3 × 10⁶ sperm/mL) intramuscular treatments. Sperm morphology and velocity were not different (p > 0.05) among the doses and administration routes. We show that nasal administration of GnRH in tiger salamanders can result in sperm samples with high concentration and motility. Less invasive hormone administration routes may provide an alternative strategy for hormone treatment in at-risk caudates, especially when injections are not feasible.

尾尾目中超过一半的物种受到威胁，需要保护繁殖措施以防止种群进一步减少。不幸的是，在人类照顾下的两栖动物经常面临繁殖困难，这是由于模仿自然环境线索引发成功繁殖的激素级联所带来的挑战。外源性激素管理可以有效地克服这种季节性和行为障碍在圈养。本研究旨在探讨两种不同的促性腺激素释放激素（GnRH）给药途径对东部虎蝾螈精子数量和质量的影响。每只虎蝾螈（雄性14只/组）在肌肉或鼻腔注射0.025 μg GnRH 24 h后，随机旋转6个处理，分别为低（0.02 μg/g）、中（0.1 μg/g）和高（0.5 μg/g）处理。不同治疗组的精子应答数差异无统计学意义（p > 0.05）。中鼻组的精子浓度最高（5.2±2.4 × 106精子/mL），与肌肉注射组（1.7±0.5 × 106精子/mL）和肌肉注射组（3.5±1.3 × 106精子/mL）差异无统计学意义（p > 0.05）。不同剂量和给药途径对精子形态和速度无显著影响（p > 0.05）。我们表明，在虎蝾螈鼻给药GnRH可以导致精子样品具有高浓度和运动性。侵入性较小的激素给药途径可能为高危尾状动脉的激素治疗提供另一种策略，特别是在注射不可行的情况下。

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引用次数: 0

Quantification of the overall protection of threatened fauna and flora species from France, globally and across territories and taxonomic groups 法国濒危动植物物种总体保护的量化，全球范围内，跨地域和分类群

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

Journal for Nature Conservation

Pub Date : 2026-01-05 DOI: 10.1016/j.jnc.2026.127209

Julie Rode , Raphaël Marchand , Rémy Poncet , Geoffroy Dufay

In a context of rapid biodiversity loss, the protection of threatened species has become a crucial stake. By comparing the reference databases of threatened and protected fauna and flora species from France, we quantified the gap between threat evaluation and protection legislation. More than half of threatened species are not protected. The distribution over taxonomic groups and administrative units display a largely uneven bias geographically towards mainland France and Corsica, and taxonomically towards the vertebrates’ group. Such bias can also be found among described species and species classified by the International Union for Conservation of Nature, which leads to an underestimation of the number of threatened species. It becomes urgent to accelerate the evaluation of species threat level and to improve their protection – either directly or indirectly (e.g. through the protection of “umbrella species”, selected based on documented species to species, or species to habitats relationships) to use protection status as an efficient mean to stop and reverse the decline.

在生物多样性迅速丧失的背景下，保护濒危物种已成为一项至关重要的利益。通过对法国濒危和受保护动植物物种参考数据库的比较，我们量化了威胁评估与保护立法之间的差距。超过一半的濒危物种没有得到保护。在分类类群和行政单位上的分布表现出很大的不均衡，地理上偏向法国大陆和科西嘉岛，分类上偏向脊椎动物类群。在被描述的物种和被国际自然保护联盟分类的物种中也可以发现这种偏见，这导致了对受威胁物种数量的低估。当务之急是加快物种威胁水平的评估，并直接或间接地（例如，通过保护“保护伞物种”，根据记录的物种对物种或物种对栖息地的关系选择），利用保护状态作为阻止和扭转下降的有效手段。

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引用次数: 0

The importance of riparian forests as corridors for mammals in a productive landscape of the Yungas 河岸森林作为哺乳动物走廊的重要性

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

Journal for Nature Conservation

Pub Date : 2026-01-05 DOI: 10.1016/j.jnc.2026.127213

Sebastian A. Albanesi , Roberto Cáceres , Agustina Novillo , Laura M. Bellis

In agricultural landscapes, riparian forests often represent the last remaining fragments of native habitats, facilitating wildlife movement and playing a crucial role in conservation. In the Yungas, a forest ecoregion east of the Andes mountain range in South America, these forests still support significant mammal diversity; however, they remain poorly studied. The aim of this study is therefore to assess the importance of riparian forest corridors for mammal communities within a productive matrix, compared to those in a continuous forest landscape. We used diversity indices, PERMANOVA and SIMPER analysis to compare species frequency variation between riparian forest types. Furthermore, we employed principal component analysis (PCA) and generalised linear models (GLMs) to identify the variables that explain habitat use. The species richness and diversity indices of both riparian forest types were similar. Seven species contributed to the dissimilarity between the situations. The most frequently recorded mammal species differed between the two environments: the agouti (Dasyprocta variegata) was most common in the riparian forest, whereas the tapeti (Sylvilagus brasiliensis) dominated in the forest embedded within the productive matrix. The global model did not show statistically significant relationships between species richness and the environmental variables, however, the species-specific models indicated that detection frequency was significantly influenced at fine scales by canopy cover, the percentage of croplands, and the density of nearby roads, and at broader scales by the distance to protected areas and to cities/towns. Therefore, we recommend prioritizing riparian forests for biological restoration actions within agricultural landscapes, as this may enhance the persistence of mammal populations across large spatial extents.

在农业景观中，河岸森林往往是原生栖息地的最后残余部分，促进野生动物的运动，在保护中发挥着至关重要的作用。在南美洲安第斯山脉以东的森林生态区Yungas，这些森林仍然支持着重要的哺乳动物多样性；然而，对它们的研究仍然很少。因此，本研究的目的是评估与连续森林景观相比，在生产基质中河岸森林走廊对哺乳动物群落的重要性。利用多样性指数、PERMANOVA和SIMPER分析比较了不同河岸林类型间物种频率的变化。此外，我们采用主成分分析（PCA）和广义线性模型（GLMs）来确定解释栖息地利用的变量。两种类型的物种丰富度和多样性指数相似。7个物种导致了两种情况之间的差异。两种环境中记录最多的哺乳动物种类不同：刺鼠（Dasyprocta variegata）在河岸森林中最常见，而绵猴（Sylvilagus brasiliensis）在嵌入生产基质的森林中占主导地位。全球模型未显示物种丰富度与环境变量之间的统计显著关系，但物种特异性模型表明，在细尺度上，检测频率受冠层覆盖、农田百分比和附近道路密度的显著影响，在更大尺度上受保护区和城镇距离的显著影响。因此，我们建议在农业景观中优先考虑河岸森林的生物恢复行动，因为这可能会增强哺乳动物种群在大空间范围内的持久性。

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引用次数: 0

Fragmentation dynamics in the Atlantic forest Green Corridor of Misiones, Argentina: Implications for conservation planning and policy effectiveness 阿根廷米西奥内斯大西洋森林绿色走廊的破碎化动态：对保护规划和政策有效性的影响

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

Journal for Nature Conservation

Pub Date : 2026-01-05 DOI: 10.1016/j.jnc.2026.127212

L.S. Polo Perdomo , Pablo Baldassini , Carlos M. Di Bella

The Atlantic Forest Green Corridor in Misiones, Argentina, is one of the last remaining bastions of subtropical biodiversity in South America. Yet, over the past three decades, the region has experienced sustained deforestation and escalating forest fragmentation. This study employs multitemporal satellite imagery (1990–2020), landscape metrics (Mean Patch Area, Number of Patches, Nearest Neighbor Distance), and spatial autocorrelation (Moran’s I) to assess changes in forest structure and connectivity across 1.1 million hectares. Results reveal a 12.98 % loss of native forest (∼129,000 ha), with deforestation peaking at 0.73 % annually (2000–2005). Fragmentation intensified as Mean Patch Area (MPA) declined by 24.6 % (from 285 to 215 ha), the number of patches (NP) more than doubled, and patch isolation (NND) increased from 95 m to 246 m. Under Argentina’s Native Forest Law (OTBN), strictly protected Category I areas maintained greater structural integrity. In contrast, Categories II (regulated use) and III (low protection) exhibited severe fragmentation; by 2020, no unfragmented forest remained in Category III, and Category II displayed strong spatial coupling between deforestation and fragmentation (Moran’s I > 0.5). While core protected areas remained resilient, degradation in surrounding private lands and buffer zones indicates that zoning alone cannot halt habitat loss. These findings emphasize the need to embed ecological connectivity into land-use planning and conservation frameworks. We recommend reinforcing habitat corridors, restoring degraded forests in vulnerable zones, and strengthening the enforcement of sustainable land-use regulations. This integrative approach demonstrates the utility of spatial analysis and remote sensing in informing effective conservation strategies to safeguard landscape connectivity in one of the world’s most threatened forest ecosystems.

阿根廷米西奥内斯的大西洋森林绿色走廊是南美洲亚热带生物多样性的最后堡垒之一。然而，在过去三十年中，该地区经历了持续的森林砍伐和不断升级的森林破碎化。本研究采用多时相卫星图像（1990-2020年）、景观指标（平均斑块面积、斑块数量、最近邻距离）和空间自相关（Moran’s I）来评估110万公顷森林结构和连通性的变化。结果显示，原始森林损失了12.98%（约12.9万公顷），毁林率最高为每年0.73%（2000-2005年）。平均斑块面积（MPA）减少24.6%（从285 ha减少到215 ha），斑块数量（NP）增加一倍以上，斑块隔离（NND）从95 m增加到246 m，破碎化加剧。根据阿根廷的原生森林法（OTBN），严格保护的第一类地区保持了更大的结构完整性。相比之下，第二类（管制使用）和第三类（低保护）表现出严重的碎片化；到2020年，第III类未破碎化森林已消失，第II类森林在森林砍伐和破碎化之间表现出较强的空间耦合（Moran 's I > 0.5）。虽然核心保护区仍然具有复原力，但周边私人土地和缓冲区的退化表明，仅靠分区不能阻止栖息地的丧失。这些发现强调了将生态连通性纳入土地利用规划和保护框架的必要性。我们建议加强栖息地走廊，恢复脆弱地区退化的森林，并加强可持续土地利用法规的执行。这种综合方法展示了空间分析和遥感在提供有效保护策略方面的效用，以保护世界上最受威胁的森林生态系统之一的景观连通性。

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引用次数: 0